435  
FOUS55 KGGW 172115  
PFMGGW  
 
POINT FORECAST MATRICES  
NATIONAL WEATHER SERVICE GLASGOW MT  
315 PM MDT SUN MAY 17 2026  
 
MTZ017-181000-  
GLASGOW-VALLEY MT  
48.22N 106.61W ELEV. 2293 FT  
315 PM MDT SUN MAY 17 2026  
 
DATE 05/17/26 MON 05/18/26 TUE 05/19/26 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 31 48 27 63 39  
TEMP 48 41 38 35 32 37 42 45 47 41 36 30 29 41 53 60 63 51 46 43 39  
DEWPT 38 39 36 33 30 31 33 32 31 32 32 28 27 31 32 31 29 31 30 29 29  
RH 68 92 92 92 92 79 70 60 53 70 85 92 92 67 44 33 27 46 53 57 67  
WIND DIR NW NW NW NW NW N N N N NE NE NE E SE S S SE SE SE SE SE  
WIND SPD 19 17 14 13 13 13 11 11 11 5 4 4 4 4 6 6 9 9 11 10 8  
CLOUDS B1 B2 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 B2 SC FW FW SC B1 B1 B1 B1  
POP 12HR 40 20 5 0 0  
QPF 12HR 0.01 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS C S C  
 
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 68 38 69 41 70 42 78 47 82  
TEMP 65 65 48 41 64 66 50 44 65 68 51 44 71 76 57 49 75 80  
DEWPT 39 36 40 37 38 34 38 37 40 36 40 38 40 37 41 38 40 36  
PWIND DIR W NW NW NE S NE SE E W  
WIND CHAR GN GN GN LT GN GN GN GN GN  
AVG CLOUDS B1 B1 B1 SC SC SC B1 B2 B2 SC B1 SC SC FW SC B1 SC FW  
POP 12HR 30 20 10 5 20 10 5 10 5  
RAIN SHWRS C S S S  
TSTMS S S  
 

 
MTZ020-181000-  
WOLF POINT-WESTERN ROOSEVELT MT  
48.10N 105.58W ELEV. 1985 FT  
315 PM MDT SUN MAY 17 2026  
 
DATE 05/17/26 MON 05/18/26 TUE 05/19/26 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 32 49 28 64 36  
TEMP 51 44 40 35 33 39 44 47 47 41 36 31 29 40 53 61 63 50 44 40 38  
DEWPT 38 38 38 34 31 32 32 31 30 31 31 29 27 29 31 29 28 28 27 25 25  
RH 61 79 92 96 92 76 62 53 51 67 82 92 92 64 43 29 26 42 51 55 59  
WIND DIR NW NW NW NW N N N N N NE NE N NE SE S S SE E SE SE SE  
WIND SPD 12 11 9 9 10 10 10 11 10 5 3 1 1 1 1 4 5 5 8 6 4  
CLOUDS B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 SC FW FW SC B1 B1 B1  
POP 12HR 60 30 10 0 5  
QPF 12HR 0.02 0.03 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS L C C S C C  
 
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 72 38 70 40 73 41 80 46 84  
TEMP 68 67 49 41 66 68 50 43 67 71 51 44 73 78 57 49 78 82  
DEWPT 36 35 40 38 37 34 38 38 39 37 41 39 40 37 41 40 40 34  
PWIND DIR SW NW NW NE E NE SE SE W  
WIND CHAR GN LT LT LT LT LT LT GN GN  
AVG CLOUDS B1 B1 B1 SC B1 SC B1 B1 B2 B1 B1 SC SC SC SC SC SC SC  
POP 12HR 20 10 10 10 20 20 5 10 5  
RAIN SHWRS S S S S  
TSTMS S S  
 

 
MTZ022-181000-  
JORDAN-GARFIELD MT  
47.33N 106.95W ELEV. 2661 FT  
315 PM MDT SUN MAY 17 2026  
 
DATE 05/17/26 MON 05/18/26 TUE 05/19/26 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 30 48 26 65 38  
TEMP 50 41 37 34 32 36 42 46 46 40 34 29 27 41 56 63 64 51 45 42 39  
DEWPT 37 35 34 32 30 30 30 29 29 31 31 28 26 27 29 28 28 29 27 26 26  
RH 61 79 89 92 92 79 62 51 51 70 89 96 96 57 35 26 25 42 49 53 59  
WIND DIR NW NW NW NW NW NW N N N N N N S S S SW S SE SE S SW  
WIND SPD 18 16 12 11 12 11 11 12 9 2 0 0 1 2 3 5 5 4 5 4 4  
WIND GUST 29 26 19  
CLOUDS B2 B1 B1 B2 OV OV OV OV B2 B1 SC FW SC FW SC SC SC SC B1 B1 B1  
POP 12HR 10 20 5 20 0  
QPF 12HR 0 0 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS S S S  
TSTMS S S  
 
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 69 38 68 41 70 41 78 47 81  
TEMP 66 64 46 41 64 66 48 43 66 68 48 44 72 76 55 49 76 79  
DEWPT 35 36 39 38 35 34 36 36 37 37 39 38 38 37 39 37 36 36  
PWIND DIR W NW NW SE W W S W W  
WIND CHAR GN LT LT LT LT LT LT LT GN  
AVG CLOUDS B1 B1 B1 SC B1 SC B1 B1 B2 SC SC SC SC FW SC B1 SC SC  
POP 12HR 20 20 10 10 20 10 5 10 10  
RAIN SHWRS S S S S  
TSTMS S S  
 

 
MTZ024-181000-  
SIDNEY-RICHLAND MT  
47.70N 104.20W ELEV. 1985 FT  
315 PM MDT SUN MAY 17 2026  
 
DATE 05/17/26 MON 05/18/26 TUE 05/19/26 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 34 48 30 61 35  
TEMP 52 45 42 39 36 39 43 46 46 42 38 34 31 40 51 58 60 49 43 40 37  
DEWPT 39 39 39 37 34 34 35 33 32 32 33 32 29 30 30 29 28 28 27 26 24  
RH 61 79 89 92 92 82 73 60 58 67 82 92 92 67 44 33 29 44 53 57 59  
WIND DIR N N NW NW N N N N N N N N N NW NW NW E E SE SE SE  
WIND SPD 11 8 5 6 9 9 11 13 10 6 4 3 2 2 3 3 4 5 8 8 8  
CLOUDS B2 B2 OV B2 OV OV OV OV B2 OV OV B2 OV B1 SC SC FW SC SC B1 B1  
POP 12HR 30 30 30 5 0  
QPF 12HR 0 0.01 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS C S S S S S S C  
 
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 73 40 70 40 72 43 79 47 84  
TEMP 69 68 49 44 65 68 50 44 67 71 53 46 72 77 58 51 78 83  
DEWPT 34 35 39 39 38 35 38 38 40 37 40 40 41 37 41 41 41 37  
PWIND DIR S NW NW E SE SE S SE W  
WIND CHAR GN LT GN LT LT LT LT GN GN  
AVG CLOUDS B1 B1 B1 B1 B1 SC SC B1 B2 B1 B1 SC SC FW SC SC SC SC  
POP 12HR 10 20 10 5 30 20 10 10 10  
RAIN SHWRS S C S  
TSTMS S  
 

 
MTZ025-181000-  
GLENDIVE-DAWSON MT  
47.13N 104.80W ELEV. 2457 FT  
315 PM MDT SUN MAY 17 2026  
 
DATE 05/17/26 MON 05/18/26 TUE 05/19/26 WED  
MDT 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 34 48 30 62 37  
TEMP 55 46 42 39 36 39 44 46 46 42 38 34 31 41 51 59 61 49 44 40 38  
DEWPT 40 39 38 37 33 34 35 34 33 33 34 32 30 32 31 30 28 27 27 25 25  
RH 57 76 86 92 89 82 70 63 60 70 85 92 96 70 46 33 28 42 51 55 59  
WIND DIR NW NW NW NW NW NW N N N N N N NW NW W W SE E SE S S  
WIND SPD 18 12 11 11 11 11 12 13 11 6 4 3 2 2 3 4 4 6 8 8 6  
CLOUDS B1 B2 B2 B2 B2 OV B2 OV OV OV OV OV B2 SC SC FW FW SC SC B1 B1  
POP 12HR 20 30 20 0 0  
QPF 12HR 0 0.03 0 0 0  
SNOW 12HR 00-00 00-00 00-00  
RAIN SHWRS S S C S  
 
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26  
MDT 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 72 41 69 42 72 43 78 49 83  
TEMP 69 68 50 43 65 68 51 44 67 70 52 45 72 77 58 50 78 82  
DEWPT 35 36 39 39 38 36 38 38 40 38 41 40 41 38 41 40 41 38  
PWIND DIR SW NW NW NE SW SW S S W  
WIND CHAR GN LT GN LT LT LT LT GN GN  
AVG CLOUDS B1 B1 B1 B1 B1 SC SC B1 B1 B1 B1 SC SC FW SC SC SC FW  
POP 12HR 10 20 10 5 30 20 5 10 10  
RAIN SHWRS S S C S  
TSTMS S  
 

 
 
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