170  
FNUS55 KBYZ 180848  
FWFBYZ  
 
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA  
NATIONAL WEATHER SERVICE BILLINGS MT  
248 AM MDT SUN AUG 18 2019  
   
DISCUSSION
 
 
   
..PROLONGED PERIOD OF HOT/DRY CONDITIONS AHEAD
 
 
EXPECT CONDITIONS TO TURN WARMER AND DRIER THROUGH MUCH OF THE  
NEXT WEEK AS A RIDGE OF HIGH PRESSURE BUILDS. LOOK FOR HIGHS IN  
THE MID TO UPPER 80S SUNDAY, AND THEN UPPER 80S TO MID 90S THE  
REST OF THE WEEK. AFTERNOON RH VALUES WILL BE THE LOWEST MONDAY  
WITH MAINLY TEENS EXPECTED. HOWEVER, A RETURN OF EASTERLY LOW  
LEVEL FLOW WILL MEAN GENERALLY 20-30 PERCENT RH FOR THE REST OF  
THE WEEK. LOOK FOR ISOLATED AFTERNOON SHOWER/THUNDERSTORMS OVER  
THE HIGH COUNTRY AT TIMES, BUT LITTLE WETTING RAINFALL EXPECTED AT  
THE LOWER ELEVATIONS. BT/CARROTHERS  
 
MTZ123-182215-  
GALLATIN NATIONAL FOREST-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......77-86 AT 5000 FEET...64-74 AT 7000 FEET.  
* 24 HR TREND.........12 DEGREES WARMER.  
* MIN HUMIDITY..........20-30 PERCENT AT 5000 FEET...25-35 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........22 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............WEST 15 TO 25 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......48-58 AT 5000 FEET...44-54 AT 7000 FEET.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MAX HUMIDITY..........48-58 PERCENT AT 5000 FEET...45-55 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........37 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 15 MPH.  
* RIDGETOP.............WEST 15 TO 30 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......82-91 AT 5000 FEET...70-80 AT 7000 FEET.  
* 24 HR TREND.........4 DEGREES WARMER.  
* MIN HUMIDITY..........15-24 PERCENT AT 5000 FEET...20-30 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........4 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............WEST 20 TO 35 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
PARTLY CLOUDY. ISOLATED SHOWERS AND  
THUNDERSTORMS. LOWS 47 TO 57. NORTH WINDS 5 TO 15 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 48 TO 58. HIGHS 78 TO 88. EAST  
WINDS 5 TO 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS 52 TO 62. HIGHS 83 TO 91. SOUTH  
WINDS 5 TO 15 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 50 TO 60. HIGHS 82 TO 91. WEST  
WINDS 5 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 50 TO 60. HIGHS 81 TO 89.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 78 TO 87.  
 

 
 
MTZ124-182215-  
WHEATLAND COUNTY/SWEET GRASS COUNTY-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......80-85.  
* 24 HR TREND.........25 DEGREES WARMER.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........59 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......49-54.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MAX HUMIDITY..........63-68 PERCENT.  
* 24 HR TREND.........35 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......86-91.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MIN HUMIDITY..........20-25 PERCENT.  
* 24 HR TREND.........5 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 49 TO 54. NORTHWEST WINDS 5 TO 15 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 80 TO 85. EAST  
WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 87 TO 92. SOUTH  
WINDS 5 TO 15 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 86 TO 91.  
NORTHWEST WINDS 5 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 83 TO 88.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 82 TO 87.  
 

 
 
MTZ125-182215-  
STILLWATER COUNTY-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......79-84.  
* 24 HR TREND.........20 DEGREES WARMER.  
* MIN HUMIDITY..........29-34 PERCENT.  
* 24 HR TREND.........52 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING  
SHIFTING TO THE EAST IN THE AFTERNOON.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......52-57.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MAX HUMIDITY..........44-49 PERCENT.  
* 24 HR TREND.........44 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......85-90.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MIN HUMIDITY..........20-25 PERCENT.  
* 24 HR TREND.........9 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTH WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
PARTLY CLOUDY. ISOLATED SHOWERS AND  
THUNDERSTORMS. LOWS 52 TO 57. WEST WINDS 5 TO 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 52 TO 57. HIGHS 79 TO 84. SOUTHWEST  
WINDS 5 TO 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 84 TO 89. SOUTH  
WINDS 5 TO 10 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS 84 TO 89. WEST  
WINDS 5 TO 10 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS 82 TO 87.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 82 TO 87.  
 

 
 
MTZ126-182215-  
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......77-84 AT 5000 FEET...66-76 AT 7000 FEET.  
* 24 HR TREND.........15 DEGREES WARMER.  
* MIN HUMIDITY..........21-31 PERCENT AT 5000 FEET...27-37 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........22 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............WEST 20 TO 35 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......55-60 AT 5000 FEET...48-58 AT 7000 FEET.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MAX HUMIDITY..........33-43 PERCENT AT 5000 FEET...35-45 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........46 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 10 TO 20 MPH.  
* RIDGETOP.............WEST 20 TO 35 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......84-91 AT 5000 FEET...72-82 AT 7000 FEET.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MIN HUMIDITY..........15-22 PERCENT AT 5000 FEET...20-30 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........8 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 10 TO 20 MPH.  
* RIDGETOP.............WEST 20 TO 35 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
PARTLY CLOUDY. LOWS 54 TO 62. WEST WINDS 5 TO  
15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.  
LOWS 54 TO 61. HIGHS 79 TO 85. NORTHWEST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 58 TO 65. HIGHS 82 TO 89. SOUTH  
WINDS 5 TO 15 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 57 TO 64. HIGHS 83 TO 89. WEST  
WINDS 5 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 57 TO 63. HIGHS 81 TO 88.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 81 TO 87.  
 

 
 
MTZ127-182215-  
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......78-83.  
* 24 HR TREND.........26 DEGREES WARMER.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........45 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLEAR.  
* MIN TEMPERATURE.......58-63.  
* 24 HR TREND.........11 DEGREES WARMER.  
* MAX HUMIDITY..........52-57 PERCENT.  
* 24 HR TREND.........27 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTH WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......86-91.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MIN HUMIDITY..........18-23 PERCENT.  
* 24 HR TREND.........7 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS 58 TO 63. NORTH WINDS 5 TO  
15 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 79 TO 84. EAST  
WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 61 TO 66. HIGHS 84 TO 89.  
SOUTHEAST WINDS 5 TO 15 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 60 TO 65. HIGHS 85 TO 90. NORTH  
WINDS 5 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 60 TO 65. HIGHS 82 TO 87.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 82 TO 87.  
 

 
 
MTZ128-182215-  
YELLOWSTONE COUNTY-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......86-91.  
* 24 HR TREND.........25 DEGREES WARMER.  
* MIN HUMIDITY..........23-28 PERCENT.  
* 24 HR TREND.........40 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......58-63.  
* 24 HR TREND.........10 DEGREES WARMER.  
* MAX HUMIDITY..........53-58 PERCENT.  
* 24 HR TREND.........34 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTH WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......94-99.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MIN HUMIDITY..........15-20 PERCENT.  
* 24 HR TREND.........8 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS 59 TO 64. NORTH WINDS 5 TO  
10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 87 TO 92. NORTHEAST  
WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 91 TO 96. SOUTH  
WINDS 5 TO 10 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 60 TO 65. HIGHS 92 TO 97. NORTH  
WINDS 5 TO 10 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 61 TO 66. HIGHS 89 TO 94.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 89 TO 94.  
 

 
 
MTZ129-182215-  
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......74-84 AT 5000 FEET...66-74 AT 7000 FEET.  
* 24 HR TREND.........19 DEGREES WARMER.  
* MIN HUMIDITY..........26-36 PERCENT AT 5000 FEET...31-41 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........13 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 15 MPH IN THE MORNING  
SHIFTING TO THE WEST IN THE AFTERNOON.  
* RIDGETOP.............WEST 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......57-63 AT 5000 FEET...54-59 AT 7000 FEET.  
* 24 HR TREND.........10 DEGREES WARMER.  
* MAX HUMIDITY..........38-48 PERCENT AT 5000 FEET...32-40 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........46 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHEAST WINDS 10 TO 20 MPH.  
* RIDGETOP.............WEST 10 TO 20 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......83-93 AT 5000 FEET...73-82 AT 7000 FEET.  
* 24 HR TREND.........9 DEGREES WARMER.  
* MIN HUMIDITY..........15-25 PERCENT AT 5000 FEET...19-29 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........12 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTHWEST WINDS 10 TO 20 MPH.  
* RIDGETOP.............WEST 15 TO 25 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS 57 TO 62. NORTHEAST WINDS 5 TO  
15 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 77 TO 87. EAST  
WINDS 10 TO 20 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 59 TO 66. HIGHS 80 TO 90.  
SOUTHEAST WINDS 10 TO 20 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 59 TO 65. HIGHS 81 TO 91.  
NORTHWEST WINDS 10 TO 20 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 59 TO 66. HIGHS 79 TO 89.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 78 TO 88.  
 

 
 
MTZ130-182215-  
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......82-87.  
* 24 HR TREND.........25 DEGREES WARMER.  
* MIN HUMIDITY..........26-31 PERCENT.  
* 24 HR TREND.........46 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......56-61.  
* 24 HR TREND.........11 DEGREES WARMER.  
* MAX HUMIDITY..........65-70 PERCENT.  
* 24 HR TREND.........28 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTH WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......91-96.  
* 24 HR TREND.........9 DEGREES WARMER.  
* MIN HUMIDITY..........19-24 PERCENT.  
* 24 HR TREND.........7 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS 57 TO 62. NORTHEAST WINDS 5 TO  
10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 84 TO 89. EAST  
WINDS 5 TO 15 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. LOWS 61 TO 66. HIGHS 89 TO 94.  
SOUTHEAST WINDS 5 TO 10 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 60 TO 65. HIGHS 91 TO 96. NORTH  
WINDS 5 TO 10 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 88 TO 93.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 87 TO 92.  
 

 
 
MTZ131-182215-  
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT  
CUSTER NATL FOREST-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......80-85.  
* 24 HR TREND.........20 DEGREES WARMER.  
* MIN HUMIDITY..........28-33 PERCENT.  
* 24 HR TREND.........37 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.  
* RIDGETOP.............WEST 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......56-61.  
* 24 HR TREND.........9 DEGREES WARMER.  
* MAX HUMIDITY..........62-67 PERCENT.  
* 24 HR TREND.........35 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 10 MPH.  
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......90-95.  
* 24 HR TREND.........10 DEGREES WARMER.  
* MIN HUMIDITY..........19-24 PERCENT.  
* 24 HR TREND.........9 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............WEST 15 TO 25 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
PARTLY CLOUDY. LOWS 57 TO 62. NORTHEAST WINDS  
5 TO 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 82 TO 87. EAST  
WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 86 TO 91.  
SOUTHEAST WINDS 5 TO 15 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 88 TO 93. SOUTH  
WINDS 5 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 86 TO 91.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 85 TO 90.  
 

 
 
MTZ132-182215-  
CUSTER COUNTY-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......76-81.  
* 24 HR TREND.........20 DEGREES WARMER.  
* MIN HUMIDITY..........30-35 PERCENT.  
* 24 HR TREND.........51 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......55-60.  
* 24 HR TREND.........11 DEGREES WARMER.  
* MAX HUMIDITY..........75-80 PERCENT.  
* 24 HR TREND.........19 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTH WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......87-92.  
* 24 HR TREND.........11 DEGREES WARMER.  
* MIN HUMIDITY..........22-27 PERCENT.  
* 24 HR TREND.........8 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS 57 TO 62. NORTH WINDS 5 TO  
15 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 79 TO 84. EAST  
WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 59 TO 64. HIGHS 82 TO 87.  
SOUTHEAST WINDS 5 TO 15 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 86 TO 91. SOUTH  
WINDS 5 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 83 TO 88.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 83 TO 88.  
 

 
 
MTZ133-182215-  
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......76-81.  
* 24 HR TREND.........14 DEGREES WARMER.  
* MIN HUMIDITY..........41-46 PERCENT.  
* 24 HR TREND.........19 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......54-59.  
* 24 HR TREND.........10 DEGREES WARMER.  
* MAX HUMIDITY..........84-89 PERCENT.  
* 24 HR TREND.........13 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTH WINDS 5 TO 10 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......88-93.  
* 24 HR TREND.........12 DEGREES WARMER.  
* MIN HUMIDITY..........27-32 PERCENT.  
* 24 HR TREND.........14 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........3.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS 57 TO 62. NORTH WINDS 5 TO  
10 MPH.    
TUESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 54 TO 59. HIGHS 79 TO 84. EAST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 79 TO 84.  
SOUTHEAST WINDS 5 TO 15 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS 84 TO 89.  
SOUTHEAST WINDS 5 TO 15 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 83 TO 88.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 84 TO 89.  
 

 
 
WYZ274-182215-  
SHERIDAN COUNTY-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.  
* MAX TEMPERATURE.......82-87.  
* 24 HR TREND.........18 DEGREES WARMER.  
* MIN HUMIDITY..........29-34 PERCENT.  
* 24 HR TREND.........27 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING EAST 5  
TO 10 MPH IN THE AFTERNOON.  
* RIDGETOP.............LIGHT WINDS.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......54-59.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MAX HUMIDITY..........52-57 PERCENT.  
* 24 HR TREND.........46 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 10 MPH.  
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......92-97.  
* 24 HR TREND.........10 DEGREES WARMER.  
* MIN HUMIDITY..........17-22 PERCENT.  
* 24 HR TREND.........12 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH IN THE MORNING  
SHIFTING TO THE NORTH IN THE AFTERNOON.  
* RIDGETOP.............WEST 15 TO 25 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
PARTLY CLOUDY. LOWS 55 TO 60. EAST WINDS 5 TO  
10 MPH.    
TUESDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS  
54 TO 59. HIGHS 85 TO 90. SOUTHEAST WINDS 5 TO 10 MPH.    
WEDNESDAY
 
MOSTLY CLEAR. SCATTERED SHOWERS AND THUNDERSTORMS.  
LOWS 57 TO 62. HIGHS 87 TO 92. SOUTH WINDS 5 TO 10 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 56 TO 61. HIGHS 89 TO 94. WEST  
WINDS 5 TO 10 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 56 TO 61. HIGHS 87 TO 92.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 87 TO 92.  
 

 
 
WYZ284-182215-  
BIGHORN NATIONAL FOREST-  
248 AM MDT SUN AUG 18 2019  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......66-71.  
* 24 HR TREND.........10 DEGREES WARMER.  
* MIN HUMIDITY..........32-37 PERCENT.  
* 24 HR TREND.........3 PERCENT WETTER.  
* WIND (20 FT)  
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........2.  
   
TONIGHT
 
 
* SKY/WEATHER...........CLEAR.  
* MIN TEMPERATURE.......43-48.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MAX HUMIDITY..........50-55 PERCENT.  
* 24 HR TREND.........48 PERCENT DRIER.  
* WIND (20 FT)  
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 15 MPH.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
   
MONDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......74-79.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MIN HUMIDITY..........20-25 PERCENT.  
* 24 HR TREND.........12 PERCENT DRIER.  
* WIND (20 FT)  
* AT BURGESS JCT.......WEST WINDS 5 TO 15 MPH. GUSTS UP TO 30 MPH  
IN THE AFTERNOON.  
* LAL...................1...NO THUNDERSTORMS.  
* CWR...................ZERO.  
* HAINES INDEX..........4.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS 44 TO 49. SOUTHEAST WINDS 5 TO  
10 MPH.    
TUESDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS  
43 TO 48. HIGHS 70 TO 75. EAST WINDS 5 TO 15 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 46 TO 51. HIGHS 72 TO 77. SOUTH WINDS 5 TO 10 MPH.    
THURSDAY
 
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 73 TO 78. WEST  
WINDS 5 TO 15 MPH.    
FRIDAY
 
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 71 TO 76.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 70 TO 75.  
 

 
 
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