Point Forecast Matrices
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
650 FOUS55 KTFX 210631 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 1231 AM MDT Fri Aug 21 2026 MTZ312-221000- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 1231 AM MDT Fri Aug 21 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 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 56 87 59 91 60 Temp 62 57 62 74 84 85 76 69 64 61 67 79 88 90 76 70 65 61 Dewpt 44 46 48 48 43 42 46 47 48 47 48 47 44 47 51 53 52 50 RH 52 67 60 40 24 22 34 45 56 60 50 32 22 23 42 55 63 67 Wind dir NW W W N NE NE NE E SE SE S S SE E SW SW SW SW Wind spd 8 5 5 3 5 6 8 5 4 4 3 3 5 5 6 10 10 10 Clouds FW FW FW FW FW SC B1 B2 B1 OV B2 B2 SC B1 B2 B2 B1 SC PoP 12hr 0 0 20 20 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C Tstms S S C C Date 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 90 55 81 53 82 55 86 55 83 Temp 86 85 65 55 74 79 62 54 75 80 64 55 80 82 65 56 77 81 Dewpt 49 39 42 41 40 39 43 45 45 42 44 45 45 42 45 45 42 36 PWind dir SW W W NE S E S S SW Wind char GN GN LT GN LT GN LT GN LT Avg clouds SC SC FW FW CL CL FW SC FW FW FW SC SC FW SC SC SC SC PoP 12hr 20 10 0 5 0 5 5 20 5 Rain shwrs S S Tstms S $$ MTZ303-221000- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 1231 AM MDT Fri Aug 21 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 52 82 54 84 56 Temp 56 53 58 72 80 82 71 64 60 56 60 72 81 84 72 65 60 57 Dewpt 49 50 50 49 47 44 47 46 47 47 48 48 47 46 51 50 48 46 RH 77 89 75 44 31 26 42 52 62 72 64 42 30 27 48 58 64 67 Wind dir NW NW N NE E E E E E E SE SE SE S S SW W W Wind spd 12 8 6 5 6 8 6 5 5 5 5 8 8 8 5 6 8 8 Clouds FW FW SC FW FW FW B1 B1 B1 OV B2 B1 FW FW B2 B1 B1 SC PoP 12hr 0 0 10 20 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S Tstms S S Obvis K Date 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 50 76 49 78 50 81 51 77 Temp 79 78 59 51 69 74 57 50 70 77 59 51 74 79 60 52 72 75 Dewpt 45 37 39 38 41 41 43 43 44 41 43 43 43 41 43 42 40 37 PWind dir W W NW N SE SE SE SW W Wind char GN BZ GN LT LT GN LT GN GN Avg clouds SC FW FW FW FW FW FW FW SC FW FW SC SC SC SC SC B1 SC PoP 12hr 10 0 0 0 0 5 5 10 10 $$ MTZ319-221000- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 1231 AM MDT Fri Aug 21 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 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 92 60 90 58 Temp 63 60 64 78 89 92 79 71 66 62 64 77 87 87 74 68 62 58 Dewpt 41 42 43 47 45 42 43 45 47 47 49 47 46 47 52 54 53 51 RH 44 51 46 33 22 18 28 39 50 58 58 35 24 25 46 61 72 77 Wind dir W W NW N N N NW W W W E E E E S S S S Wind spd 4 5 4 4 5 8 5 5 4 3 1 5 8 6 8 5 4 2 Clouds SC FW FW FW FW B1 B2 B1 B2 OV B2 SC B1 B2 B1 B2 B1 SC PoP 12hr 0 0 30 30 50 QPF 12hr 0 0 0 0 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C S S C C Tstms S S S S C C Obvis K K Date 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 88 54 85 54 85 54 85 53 82 Temp 80 83 64 54 74 82 64 54 75 83 64 54 77 82 63 53 75 80 Dewpt 50 40 44 43 42 37 42 44 46 41 45 46 47 43 45 45 45 39 PWind dir SW W W NW E S S SW W Wind char LT GN LT LT LT LT LT LT LT Avg clouds SC SC SC FW FW FW SC B1 SC FW SC SC SC FW B1 B1 SC FW PoP 12hr 20 10 0 5 5 5 10 20 5 Rain shwrs S S Tstms S $$ MTZ326-221000- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 1231 AM MDT Fri Aug 21 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 54 91 57 88 53 Temp 59 55 64 79 89 89 74 69 63 59 64 77 85 84 69 64 58 54 Dewpt 42 41 44 45 43 39 45 47 48 49 50 49 48 50 56 56 54 51 RH 53 59 48 30 20 17 35 45 58 69 60 37 28 31 63 75 86 90 Wind dir SE S S NW N N SE E SE E SE NW SW S SW SE SE SE Wind spd 5 4 2 3 4 6 6 6 5 4 2 3 4 5 5 3 3 3 Wind gust 18 Clouds SC SC FW SC FW B1 SC B1 B1 OV B2 B1 B1 B2 B2 B2 SC SC PoP 12hr 0 5 20 40 60 QPF 12hr 0 0 0 0 0.05 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S L L Tstms S S S S C C Date 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 51 84 51 82 51 84 51 83 Temp 79 82 62 51 75 80 61 51 75 80 61 51 76 80 61 51 75 80 Dewpt 52 46 50 47 47 42 48 47 48 43 48 46 47 42 48 45 45 38 PWind dir SW S W E SW E SW SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 SC SC FW FW B1 B1 SC FW SC SC SC SC B1 B1 SC SC PoP 12hr 30 20 5 20 5 5 5 10 5 Rain shwrs C S S Tstms S S S $$ MTZ330-221000- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 1231 AM MDT Fri Aug 21 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 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 46 89 50 83 45 Temp 51 46 57 80 89 88 71 60 55 52 58 76 80 75 64 56 50 46 Dewpt 39 37 41 44 37 36 43 43 44 43 47 51 46 48 53 52 50 46 RH 63 71 55 28 16 16 36 53 66 71 67 42 30 38 67 86100100 Wind dir NW E E NW W W N NE E E SW SW SW SW N N N N Wind spd 2 1 1 2 8 8 4 3 2 2 1 8 9 4 0 0 0 0 Wind gust 19 19 14 Clouds SC SC SC FW SC SC B2 B1 OV OV B2 SC B1 B2 B2 B1 B1 B1 PoP 12hr 5 10 20 40 50 QPF 12hr 0 0 0 0.03 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C S Tstms S S C C C Date 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 77 40 76 41 77 40 76 Temp 72 71 53 42 71 68 51 41 70 70 52 41 71 69 51 40 69 69 Dewpt 50 47 46 41 45 43 46 41 46 40 44 41 45 40 42 39 40 33 PWind dir SW SW SW SW W W SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 SC B1 SC B1 B1 B1 SC FW B1 B1 SC SC B1 B1 SC SC PoP 12hr 40 20 30 30 10 5 10 5 5 Rain shwrs S C S C C Tstms C S C S $$ MTZ328-221000- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 1231 AM MDT Fri Aug 21 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 54 90 57 86 51 Temp 59 55 61 77 88 89 72 66 62 59 63 78 85 80 65 60 56 52 Dewpt 44 43 45 47 44 46 46 45 46 46 51 52 53 56 55 54 52 49 RH 57 64 56 35 22 23 39 47 56 62 65 40 33 44 70 81 86 89 Wind dir S S SW N N NE NE S S S S SW S SW S S S S Wind spd 4 6 4 3 4 8 6 4 4 5 3 4 6 8 5 5 5 5 Clouds SC B1 FW FW SC SC B1 B2 OV OV B1 SC B1 B2 B2 B1 B1 SC PoP 12hr 0 10 30 50 70 QPF 12hr 0 0 0 0.01 0.03 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C S S L L Tstms S S S S S C C Heat index 80 Max heat 86 83 83 Date 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 49 83 48 81 49 82 48 81 Temp 76 79 58 49 74 77 58 50 73 77 58 51 75 76 58 50 73 77 Dewpt 49 42 44 41 47 45 47 45 48 46 47 45 48 46 45 42 44 40 PWind dir SW SW SW S SW SE S SW SW Wind char GN GN LT LT LT LT LT LT LT Avg clouds SC SC SC SC SC SC B1 B1 SC FW SC SC SC SC B1 B1 SC FW PoP 12hr 30 10 10 20 5 10 20 10 5 Rain shwrs C S S Tstms S S S $$ MTZ305-221000- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 1231 AM MDT Fri Aug 21 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun 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 89 59 93 60 Temp 61 57 63 79 87 87 76 68 64 62 69 84 91 90 79 71 65 61 Dewpt 49 48 48 48 46 46 49 50 49 49 49 48 48 50 51 53 52 51 RH 65 72 58 34 24 24 39 52 58 62 49 29 23 25 38 53 63 70 Wind dir NE E E E E E E E E E SE SE SE SE SE SE SW SW Wind spd 14 8 11 11 9 9 9 11 11 11 13 16 14 14 12 8 5 5 Clouds FW FW CL FW FW FW SC SC B1 OV B2 B2 B1 B1 B1 B2 B2 B1 PoP 12hr 20 0 5 20 10 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S Tstms S Date 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 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 94 56 82 52 83 54 88 55 85 Temp 86 88 66 56 76 79 61 53 76 81 62 54 80 85 65 56 77 82 Dewpt 51 43 45 41 46 42 46 46 44 41 44 44 45 42 45 45 44 38 PWind dir SW W W N NE E E SE SW Wind char GN GN GN LT LT LT LT GN LT Avg clouds SC SC SC FW FW CL FW FW FW FW FW FW SC FW SC SC SC SC PoP 12hr 20 20 0 0 0 5 5 20 20 Rain shwrs S S S S Tstms S $$ MTZ314-221000- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 1231 AM MDT Fri Aug 21 2026 Date 08/20/26 Fri 08/21/26 Sat 08/22/26 Sun MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 55 85 57 88 58 Temp 62 58 65 77 83 83 71 66 63 59 67 80 86 85 73 67 63 59 Dewpt 43 41 45 47 46 48 49 49 48 46 49 48 47 51 53 52 50 47 RH 50 53 48 35 27 30 46 54 58 62 52 33 26 31 49 59 62 64 Wind dir E S W N NE E E SE E E SE SE SE SE S S S SW Wind spd 4 4 4 5 8 9 10 12 13 11 8 6 8 6 8 6 4 3 Wind gust 23 24 Clouds SC SC FW FW FW FW SC B2 B1 B2 B2 B1 B2 B1 B1 B2 B2 SC PoP 12hr 0 0 10 20 30 QPF 12hr 0 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C Tstms S C C Obvis K K K Date 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu 08/27/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 53 80 50 81 52 85 52 82 Temp 84 83 63 54 74 77 60 51 74 78 60 53 79 80 61 54 76 77 Dewpt 44 51 48 41 41 41 43 43 44 44 46 44 44 45 47 44 42 41 PWind dir W W W E E SE SE SE W Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 SC FW FW FW FW SC SC FW FW SC SC SC SC B1 SC SC PoP 12hr 40 20 5 5 5 5 10 20 10 Rain shwrs C S S Tstms S $$ http://www.weather.gov/greatfalls