FOUS55 KTFX 180436 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 1035 PM MDT Sun May 17 2026 MTZ312-181000- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 1035 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 28 52 29 63 40 Temp 32 32 29 37 45 49 51 43 37 32 30 44 58 61 60 53 47 44 41 Dewpt 31 31 29 29 29 29 29 28 27 25 23 26 29 31 33 36 37 35 33 RH 96 96100 72 53 46 42 55 67 75 75 49 33 32 36 52 68 70 73 Wind dir W W SW W E E SE SE S S SW SW SW W W SW SW SW SW Wind spd 6 5 5 4 5 5 6 6 6 8 9 11 10 11 10 5 9 10 9 Clouds B1 B2 B2 SC B1 SC SC SC FW FW SC SC B1 B1 SC SC SC SC SC PoP 12hr 20 10 0 30 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain C S S Snow Obvis PF PF PF 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 61 38 67 43 68 43 76 48 77 Temp 57 56 45 42 61 65 52 46 61 66 52 46 70 73 56 50 71 74 Dewpt 35 38 39 36 34 34 38 37 35 37 39 36 34 35 36 34 32 32 PWind dir NW NW SW SW W S SW SW W Wind char GN LT LT LT LT LT GN GN GN Avg clouds B1 B2 B2 B1 SC SC B1 B1 B1 B1 SC SC SC FW SC SC SC SC PoP 12hr 60 60 5 20 30 10 5 5 5 Rain S L L C S S S Rain shwrs L C Tstms S S $$ MTZ303-181000- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 1035 PM MDT Sun May 17 2026 Date 05/17/26 Mon 05/18/26 Tue 05/19/26 Wed MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 24 54 31 63 38 Temp 30 26 24 37 47 52 53 46 39 33 32 47 59 61 61 53 46 41 39 Dewpt 26 24 23 25 27 29 29 29 30 29 28 30 29 31 33 35 35 34 34 RH 85 92 96 61 45 41 39 51 70 85 85 51 32 32 35 50 65 76 82 Wind dir NW NW NW NW E SE S S SW SW W W W W W W W W NW Wind spd 5 6 5 3 3 6 6 6 8 6 9 13 16 19 19 16 12 11 10 Wind gust 29 Clouds SC SC SC FW B1 B1 B1 SC SC FW SC B1 B1 B1 SC B1 SC SC B1 PoP 12hr 5 20 10 20 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain S S S C SnowObvis PF PF Date 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 57 34 65 39 66 40 72 43 72 Temp 51 55 41 37 60 63 48 41 58 63 48 42 66 70 52 45 66 70 Dewpt 34 36 34 33 32 33 36 35 34 35 36 34 33 33 33 31 30 30 PWind dir NW NW W W NW SW SW W W Wind char GN GN GN GN GN GN GN BZ BZ Avg clouds B1 B2 B2 SC SC B1 B2 B1 B1 B1 B1 SC SC SC SC SC SC FW PoP 12hr 60 40 5 20 30 5 5 5 5 Rain C L C S S C Rain shwrs C Tstms S $$ MTZ319-181000- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 1035 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 55 29 62 38 Temp 35 33 32 38 47 53 55 46 38 33 29 40 54 60 61 53 46 41 38 Dewpt 29 30 30 28 24 24 22 23 23 23 23 23 25 26 27 29 31 31 32 RH 78 89 92 67 40 32 27 40 54 66 78 50 32 27 27 39 55 67 79 Wind dir W W W NW N N NW W SW SW S SW W W W W SW SW SW Wind spd 6 3 3 6 6 8 8 3 4 4 3 3 6 10 10 5 6 5 4 Clouds B1 B1 SC SC SC SC SC SC FW FW SC SC SC SC SC SC FW FW SC PoP 12hr 10 10 10 20 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain S S Rain shwrs Snow Snowshwrs Tstms 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 65 38 67 40 71 41 76 44 78 Temp 60 60 46 39 60 66 52 42 61 69 52 42 69 75 55 45 70 76 Dewpt 34 35 36 35 34 31 34 35 34 31 35 34 34 30 33 33 31 29 PWind dir W NW W W W W SW W W Wind char LT GN LT LT LT LT LT GN GN Avg clouds SC B1 B2 B1 SC B1 B1 B1 SC SC SC SC SC SC SC SC SC FW PoP 12hr 30 70 5 5 20 5 5 5 10 Rain C L C Rain shwrs L S Tstms S S $$ MTZ326-181000- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 1035 PM MDT Sun May 17 2026 Date 05/17/26 Mon 05/18/26 Tue 05/19/26 Wed MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 1518 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 25 51 22 60 34 Temp 33 29 26 34 42 48 51 41 32 27 23 38 52 57 59 50 43 38 35 Dewpt 26 26 25 26 26 26 24 26 26 23 19 20 25 25 26 31 32 30 30 RH 75 88 96 72 53 42 34 55 78 85 84 48 35 29 28 48 65 73 82 Wind dir W W W NW N N N SE S S S E W W NW SE SE S SE Wind spd 6 4 3 8 6 8 6 4 6 4 4 2 4 9 6 2 4 3 3 Clouds B1 B1 B1 B1 B1 SC SC FW FW FW FW FW SC B1 SC B1 SC SC SC PoP 12hr 5 10 0 10 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain Rain shwrs Tstms Obvis PF PF Date 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 64 34 65 38 69 38 76 42 79 Temp 60 60 45 38 58 63 48 40 61 67 49 40 69 74 53 44 72 77 Dewpt 32 34 37 33 34 31 35 34 35 32 35 33 34 33 35 33 32 32 PWind dir W NW W NE W E SW S W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 B2 B2 SC SC B1 B1 B1 B1 SC SC SC SC SC SC SC FW PoP 12hr 10 70 10 20 30 5 5 10 5 Rain L L S S S Rain shwrs L C Tstms S S $$ MTZ330-181000- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 1035 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 21 41 16 51 24 Temp 28 24 22 28 36 41 40 31 23 18 16 31 47 51 50 40 33 27 24 Dewpt 21 19 17 17 14 12 10 16 19 17 15 16 16 16 17 23 25 23 22 RH 75 81 81 63 40 30 28 53 84 96 96 53 28 24 27 50 72 85 92 Wind dir N N N NE N N N N N E SE S SW SW W SW S S N Wind spd 11 10 12 17 14 11 10 4 2 1 1 1 6 8 8 1 1 1 0 Wind gust 27 27 28 36 27 20 Clouds B2 B2 B1 B2 B1 SC SC FW CL CL CL FW SC B1 B1 B1 SC SC SC PoP 12hr 5 10 5 20 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 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 58 28 61 30 65 31 71 34 74 Temp 55 55 38 30 56 59 40 32 59 63 41 32 65 69 45 36 68 72 Dewpt 22 28 34 29 26 27 31 30 28 3132 28 27 31 32 29 27 28 PWind dir SW W W W W SW SW SW SW Wind char LT LT LT LT LT LT LT LT GN Avg clouds SC B1 B2 B1 SC SC B1 B1 SC SC B1 SC FW FW SC SC FW FW PoP 12hr 5 50 10 20 20 5 5 5 5 Rain C C S Rain shwrs C S Tstms S S $$ MTZ328-181000- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 1035 PM MDT Sun May 17 2026 Date 05/17/26 Mon 05/18/26 Tue 05/19/26 Wed MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 25 48 23 60 30 Temp 31 28 26 32 42 46 47 38 31 26 24 37 52 58 58 48 41 34 31 Dewpt 22 22 22 22 21 20 19 18 19 18 17 20 22 23 23 26 28 25 23 RH 69 78 85 66 43 35 32 44 61 71 74 50 31 26 26 42 59 69 72 Wind dir NE NE E N N N N NE S S S SW SW SW W S S S S Wind spd 14 9 8 18 18 14 12 4 4 5 5 5 6 9 8 5 4 5 5 Wind gust 25 Clouds SC SC SC SC SC FW FW SC FW FW FW SC SC SC SC B1 B1 SC FW PoP 12hr 20 5 10 20 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain S Snow Snowshwrs Tstms Date 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 63 34 66 38 70 38 76 42 78 Temp 58 61 44 37 59 64 47 39 62 68 48 41 69 74 52 44 71 76 Dewpt 28 29 33 29 31 29 33 30 31 29 30 28 30 29 31 29 28 27 PWind dir SW N NW W W SW SW SW SW Wind char LT GN LT LT LT LT GN GN GN Avg clouds FW B1 B2 B1 SC SC B1 B1 SC FW SC SC SC SC SC SC SC FW PoP 12hr 5 40 5 10 5 0 5 5 5 Rain C C Rain shwrs C Tstms S $$ MTZ305-181000- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 1035 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 27 54 26 66 41 Temp 36 33 28 36 46 51 53 45 36 31 27 41 58 64 63 55 49 45 42 Dewpt 33 31 28 29 29 26 26 26 26 24 23 26 31 31 33 36 38 37 37 RH 89 92100 75 51 37 35 47 67 75 85 55 36 29 32 49 66 73 82 Wind dir N NW NW N N N NE E SE E E SW SW SW SW S SW SW SW Wind spd 8 6 4 6 6 65 6 8 5 4 4 11 11 10 8 10 10 10 Clouds B2 B2 B1 B1 SC SC FW FW FW FW SC FW SC B1 B1 B2 B1 B1 B1 PoP 12hr 20 10 0 50 10 QPF 12hr 0 0 0 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain Obvis PF PF 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 64 36 68 41 69 42 77 46 78 Temp 59 60 46 39 63 66 52 44 63 68 51 44 72 75 57 48 72 76 Dewpt 39 37 39 36 36 34 38 38 39 36 39 37 38 36 39 37 36 33 PWind dir W W W S W SE SW SW W Wind char GN GN LT LT LT LT LT GN GN Avg clouds B1 B2 B2 SC SC SC B1 B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 40 30 5 30 20 10 10 10 10 Rain C C S C S Rain shwrs S Tstms S $$ MTZ314-181000- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 1035 PM MDT Sun May 17 2026 Date 05/17/26 Mon 05/18/26 Tue 05/19/26 Wed MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 27 46 23 59 36 Temp 33 31 28 32 38 44 46 37 29 27 27 45 53 57 57 47 43 40 37 Dewpt 32 31 28 30 28 28 27 28 25 22 22 27 29 32 34 36 34 32 31 RH 96100100 92 67 53 47 70 85 81 81 49 39 38 42 65 70 73 79 Wind dir NW NW NW NW NW NW N SE S S S SW W W SW S S SW SW Wind spd 12 12 12 12 10 9 6 3 5 6 8 5 6 8 5 4 8 6 6 Clouds B2 OV OV OV B2 B2 SC FW FW FW SC SC SC B1 SC B1 SC SC SC PoP 12hr 40 40 0 30 5 QPF 12hr 0.01 0.01 0 0 0 Snow 12hr 00-00 T 00-00 Rain C C Snow C S C S Date 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 59 35 62 39 64 39 72 44 75 Temp 58 53 42 39 57 60 46 42 59 62 46 43 67 70 51 47 69 72 Dewpt 37 37 37 35 33 34 35 35 36 37 36 35 35 37 35 34 34 37 PWind dir W NW W S W S SW SW W Wind char GN LT LT LT LT LT LT LT GN Avg clouds SC B1 B2 B2 B1 SC B1 B1 B1 B1 SC SC SC SC SC SC SC SC PoP 12hr 50 70 20 20 40 10 10 10 20 Rain C L C S S S S Rain shwrs C L C S Tstms S S C S $$ http://www.weather.gov/greatfalls