193  
FNUS75 KBYZ 140041  
FWSBYZ  
 
SPOT FORECAST FOR CUSTER GALLATIN TREE PLANTING...CUSTER GALLATIN NATIONAL FOREST  
NATIONAL WEATHER SERVICE BILLINGS MT  
641 PM MDT TUE APR 13 2021  
 
FORECAST IS BASED ON FORECAST START TIME OF 2200 MDT ON APRIL 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
THE CHILLY WEATHER WILL CONTINUE THROUGH THURSDAY. WINDS WILL  
PRIMARILY BE OUT OF THE NORTH TO NORTHEAST DIRECTION AT 6-14 MPH.  
CLOUDS WILL HANG ON THROUGH THE PERIOD AND THESE CLOUDS LOOK TO  
YIELD AND INCREASING CHANCE OF SNOW LATE WEDNESDAY NIGHT THROUGH  
THE DAY THURSDAY. PRECIPITATION SHOULD BE ON THE LIGHT SIDE WITH  
LESS THAN A TENTH OF AN INCH OF LIQUID EXPECTED, WITH LESS THAN  
AN INCH OF WET SNOW. TWH  
 
   
WEDNESDAY
 
 
SKY/WEATHER.........CLOUDY.  
MAX TEMPERATURE.....34-39.  
MIN HUMIDITY........48-53 PERCENT.  
SURFACE WINDS (MPH).NORTH WINDS 4 TO 10 MPH SHIFTING TO THE  
NORTHEAST 8 TO 14 MPH IN THE AFTERNOON.  
   
WEDNESDAY NIGHT
 
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF SNOW LATE.  
MIN TEMPERATURE.....25-30.  
MAX HUMIDITY........86-91 PERCENT.  
SURFACE WINDS (MPH).EAST WINDS 6 TO 12 MPH.  
   
THURSDAY
 
 
SKY/WEATHER.........CLOUDY. SNOW LIKELY, POSSIBLY  
MIXING WITH RAIN IN THE AFTERNOON.  
MAX TEMPERATURE.....36-41.  
MIN HUMIDITY........55-60 PERCENT.  
SURFACE WINDS (MPH).NORTHEAST WINDS 6 TO 12 MPH.  
 

 
FORECASTER...HUMPHREY  
REQUESTED BY...MEGAN MARTINEZ  
TYPE OF REQUEST...OTHER  
.TAG 2108951.0/BYZ  
.DELDT 04/13/21  
.FORMATTERVERSION 2.0.0  
.EMAIL MEGAN.MARTINEZ@USDA.GOV  
 
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