Point Forecast Matrices
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
780 FOUS55 KTFX 212135 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 335 PM MDT Fri Aug 21 2026 MTZ312-221000- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 335 PM MDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 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 60 92 62 91 55 Temp 87 77 70 65 62 67 80 89 89 76 70 66 64 70 86 89 85 73 65 58 55 Dewpt 45 47 48 48 48 48 48 48 48 53 54 53 53 53 48 41 39 40 39 38 39 RH 23 35 45 54 60 50 33 24 24 45 57 63 67 55 27 19 20 30 38 47 55 Wind dir NE NE E E S S S SE SE S SW SW SW SW SW W W W W SW SW Wind spd 9 8 5 2 3 3 3 5 5 8 10 10 10 10 12 20 21 11 8 6 5 Wind gust 31 Clouds SC B1 B2 B1 B1 B2 B2 B1 B2 B2 OV B1 SC FW SC SC FW FW FW FW CL PoP 12hr 10 20 20 20 5 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Tstms S S Date 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 82 54 85 57 89 56 84 53 84 Temp 74 79 63 55 76 83 66 58 82 85 66 57 78 82 63 54 77 82 Dewpt 38 37 41 43 44 41 44 45 45 39 44 44 41 34 39 39 37 34 PWind dir W NE NW E SW S SW W SW Wind char LT LT LT GN LT GN LT LT LT Avg clouds CL CL FW SC FW FW FW SC SC FW SC B1 SC FW SC SC FW FW PoP 12hr 0 0 0 5 5 20 5 20 5 Rain shwrs S S $$ MTZ303-221000- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 335 PM MDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 55 86 57 82 51 Temp 82 72 65 60 57 62 73 83 85 73 65 61 59 66 79 81 78 67 59 53 51 Dewpt 45 46 46 47 47 48 47 48 46 50 50 48 47 48 47 42 36 38 37 37 38 RH 27 39 50 62 69 60 40 30 26 44 58 62 64 52 32 25 22 34 44 54 61 Wind dir E E SE E E SE SE SE SE S SW W W W W W W W W W W Wind spd 8 6 5 5 4 5 6 8 6 5 6 6 8 9 17 25 24 13 11 10 8 Wind gust 28 37 36 25 Clouds SC B1 B1 B2 OV B2 B2 SC B2 OV SC B1 B1 SC FW FW FW FW CL FW FW PoP 12hr 10 20 20 20 0 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Tstms S S S Date 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 77 50 81 52 84 51 78 49 77 Temp 69 75 57 51 73 79 61 53 77 81 61 52 72 76 57 50 71 76 Dewpt 41 39 43 43 43 39 41 42 42 39 41 40 37 34 37 36 35 33 PWind dir NW N SE SE SE SW W W W Wind char LT LT LT GN GN GN GN GN GN Avg clouds FW FW FW FW FW FW FW SC SC SC SC SC SC FW SC SC SC FW PoP 12hr 0 0 0 0 5 10 5 20 0 Rain shwrs S S $$ MTZ319-221000- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 335 PM MDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 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 61 91 58 88 53 Temp 92 80 72 66 62 64 78 88 86 74 68 63 59 64 80 86 82 71 64 57 53 Dewpt 42 43 46 47 47 48 48 46 46 53 55 55 53 54 49 46 41 43 43 39 42 RH 18 27 39 50 58 56 35 23 25 48 63 75 80 70 34 25 23 36 46 51 66 Wind dir NE W W W N W SE SE SW S S S S N S W W W W SW SW Wind spd 5 6 6 5 0 2 5 8 6 8 5 3 3 0 8 12 12 9 6 5 3 Wind gust 24 24 Clouds SC B2 SC B1 B2 B2 SC B1 OV OV SC SC SC FW B1 B1 FW FW FW FW FW PoP 12hr 20 40 40 30 5 QPF 12hr 0 0 0.28 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C S C C Tstms S S S S S S Date 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 86 55 87 55 87 53 84 51 83 Temp 74 83 64 55 77 84 65 55 79 83 64 53 76 81 62 51 75 81 Dewpt 41 37 41 43 45 41 45 46 48 43 45 45 43 37 39 40 41 36 PWind dir W W E SW SE SW SW W W Wind char LT LT LT LT LT LT LT LT LT Avg clouds CL CL FW SC SC FW SC SC SC SC B1 SC SC FW SC SC FW FW PoP 12hr 0 0 20 5 10 20 10 10 5 Rain shwrs S S Tstms S S $$ MTZ326-221000- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 335 PM MDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 59 88 54 87 51 Temp 89 75 70 63 59 65 77 85 83 69 64 58 54 63 79 85 81 67 61 54 51 Dewpt 39 46 47 48 48 50 48 46 50 56 57 55 53 54 51 46 46 49 49 47 46 RH 17 36 44 58 67 58 36 26 32 63 78 90 96 72 38 26 29 52 65 77 83 Wind dir N E SE SE S NW NW E SE NE SE SE SE SE W W SW NW S SE SE Wind spd 4 10 6 4 6 4 3 4 6 6 4 4 3 3 4 13 12 6 3 3 4 Wind gust 24 19 25 23 Clouds SC SC B1 B1 B2 B2 B2 SC OV B2 B1 SC B1 SC B1 B1 B1 SC FW FW FW PoP 12hr 20 30 50 30 20 QPF 12hr 0 0 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C C C S S Tstms S S C S S C S Date 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 52 85 52 86 51 84 50 83 Temp 73 81 61 52 76 83 62 53 78 82 62 51 76 81 60 50 75 80 Dewpt 44 40 46 45 47 43 49 47 47 42 48 45 44 39 43 42 41 37 PWind dir W E SW E SW SE SW S SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW FW SC B1 SC FW SC SC SC SC B1 B1 SC FW B1 SC FW SC PoP 12hr 0 5 20 10 10 20 5 20 5 Rain shwrs S S S Tstms S $$ MTZ330-221000- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 335 PM MDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 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 52 81 46 79 42 Temp 87 71 60 55 52 58 74 80 75 64 55 50 47 54 72 78 72 61 53 46 42 Dewpt 35 43 43 45 45 49 49 45 48 54 52 50 47 51 50 43 44 46 44 41 40 RH 16 36 53 69 77 72 41 29 38 70 90100100 90 46 29 37 58 71 83 93 Wind dir N NE N NE N N SW SW SW N N N N N SW SW SW SW N N N Wind spd 5 3 4 2 0 0 8 10 4 0 0 0 0 0 12 17 13 4 0 0 0 Wind gust 16 Clouds SC B1 B1 OV OV OV B1 B1 B2 B2 SC SC B1 B1 B1 B1 SC SC SC SC SC PoP 12hr 20 30 40 30 10 QPF 12hr 0 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C S C C C Tstms S C S S S C Date 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 79 42 78 42 78 41 76 39 75 Temp 72 70 51 43 71 72 52 42 72 72 52 41 70 70 50 39 69 69 Dewpt 43 40 45 43 46 41 45 42 45 40 43 39 41 33 36 34 37 29 PWind dir SW SW SW W SW SW SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 SC FW SC B1 B1 SC B1 B1 B1 SC B1 SC SC SC PoP 12hr 10 30 20 20 20 20 10 5 5 Rain shwrs C S S S S S Tstms S S S S S $$ MTZ328-221000- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 335 PM MDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 58 86 52 85 49 Temp 88 73 66 62 59 63 77 84 80 65 60 56 54 59 77 84 80 66 58 52 49 Dewpt 44 47 45 46 46 51 48 46 54 56 55 53 52 53 48 40 41 43 42 40 40 RH 22 40 47 56 62 65 36 27 41 73 84 90 93 80 36 21 25 43 55 63 71 Wind dir NE E S S S SE S W W S S S S S SW SW SW SW S S S Wind spd 9 5 3 5 5 4 2 6 9 5 5 5 5 4 9 21 18 10 8 5 4 Wind gust 35 29 Clouds SC B2 B2 OV OV OV SC B1 B2 B2 SC B1 OV SC SC SC FW SC SC SC SC PoP 12hr 30 40 40 20 5 QPF 12hr 0 0.01 0.02 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C S S S C C S S S Tstms S S C C S S S Heat index 80 Max heat 87 83 83 81 Date 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 50 84 51 84 49 82 47 82 Temp 74 78 58 51 75 79 59 51 76 78 58 49 74 78 57 48 73 78 Dewpt 45 44 46 44 47 47 48 46 48 46 45 42 44 41 40 39 41 39 PWind dir SW S SW S SW S SW SW SW Wind char LT LT LT LT LT GN LT GN LT Avg clouds FW FW B1 B1 SC FW SC SC B1 SC B1 B1 SC FW SC SC SC FW PoP 12hr 5 10 10 20 20 10 10 5 0 Rain shwrs S S Tstms S $$ MTZ305-221000- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 335 PM MDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 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 60 94 62 94 56 Temp 89 77 68 66 62 69 84 91 91 80 72 68 64 70 86 92 87 73 66 60 56 Dewpt 48 48 48 49 48 47 48 49 50 53 53 54 53 53 50 44 46 47 43 39 40 RH 24 36 49 54 60 45 29 24 25 39 51 61 67 55 29 19 24 40 43 46 55 Wind dir E E E E E E SE S SE SE SE S SW SW W W W W SW SW W Wind spd 11 9 9 10 12 12 14 14 12 10 6 5 6 9 9 11 16 10 10 10 10 Clouds FW SC SC B1 B1 SC B2 OV B1 B2 OV B2 B1 SC SC SC SC FW FW FW FW PoP 12hr 5 10 10 20 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S Tstms S S Heat index 80 Max heat 86 84 82 90 86 84 88 80 Date 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 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 83 52 87 55 92 56 86 53 84 Temp 75 80 62 54 78 84 64 57 83 89 66 57 78 83 63 54 77 81 Dewpt 46 42 45 45 45 41 43 44 45 41 45 44 42 37 40 41 39 35 PWind dir W N N E SE SE W SW W Wind char GN LT LT LT LT GN LT LT LT Avg clouds FW FW FW FW FW CL FW FW SC SC SC SC SC SC SC SC SC FW PoP 12hr 0 0 0 0 5 20 5 20 5 Rain shwrs S S $$ MTZ314-221000- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 335 PM MDT Fri Aug 21 2026 Date 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 58 89 59 90 54 Temp 83 72 66 63 60 67 81 86 85 73 67 63 60 71 85 88 82 68 62 57 55 Dewpt 48 49 48 47 47 48 49 48 52 54 53 51 49 50 46 47 51 51 47 41 40 RH 30 44 52 56 62 50 33 27 32 51 61 65 67 47 26 24 34 54 58 55 57 Wind dir E E E E E E SE SW SE S S SW SW SW W W W SW W SW SW Wind spd 12 11 14 16 9 6 6 6 5 6 5 4 4 3 4 9 8 5 4 3 4 Wind gust 25 28 14 18 Clouds SC SC B1 B2 SC SC B1 B2 SC B2 OV OV B2 FW B1 B1 B1 SC FW FW FW PoP 12hr 5 20 20 30 20 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S S Tstms S S S S Date 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri 08/28/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 51 84 54 87 54 83 51 82 Temp 74 77 59 52 76 81 61 55 81 82 62 55 77 80 60 52 76 79 Dewpt 41 39 42 42 44 43 45 44 44 44 46 44 41 40 42 40 39 38 PWind dir W E NE E S S W SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds FW CL FW SC SC FW FW SC SC SC SC B1 SC FW SC SC SC FW PoP 12hr 0 0 5 0 10 20 10 20 10 Rain shwrs S S S Tstms S $$ http://www.weather.gov/greatfalls