Point Forecast Matrices
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
799 FOUS55 KTFX 122132 PFMTFX Point Forecast Matrices National Weather Service Great Falls MT 331 PM MDT Wed Aug 12 2026 MTZ312-131000- Great Falls-Cascade MT 47.47N 111.38W Elev. 3663 ft 331 PM MDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat 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 66 49 63 47 Temp 74 64 59 55 54 55 59 63 63 57 54 51 50 52 55 60 62 57 53 50 48 Dewpt 48 51 54 53 53 53 53 51 52 53 53 50 49 51 50 48 48 50 50 49 48 RH 40 63 83 93 96 93 80 65 67 86 96 96 96 96 83 64 60 77 89 96100 Wind dir NE NE NE NE NE NE NE NE NE NE N N N NW NW N N NE NE NE SW Wind spd 21 19 14 12 11 6 6 9 11 11 11 10 8 6 4 4 5 6 4 3 2 Clouds SC B2 OV B2 OV OV OV B1 OV OV OV OV OV OV OV B2 B2 B2 B1 B1 B2 PoP 12hr 80 80 70 60 30 QPF 12hr 0.09 0.24 0.06 0.07 0.02 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C L L L L C S C C L L L L C C C C Tstms S C S S S S S C S Obvis K Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 76 51 82 53 82 53 83 54 81 Temp 67 75 60 52 75 80 62 54 76 79 62 54 77 80 62 54 75 78 Dewpt 53 50 52 50 52 48 51 49 51 49 52 50 49 46 49 48 47 44 PWind dir SE SE W SE W SE SW SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B2 SC B1 B1 SC FW SC SC B1 SC B1 B1 SC SC B1 B1 B1 SC PoP 12hr 5 10 20 20 10 30 10 30 20 Rain shwrs S S C C S Tstms S S S S $$ MTZ303-131000- Cut Bank-Glacier MT 48.60N 112.39W Elev. 3838 ft 331 PM MDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 45 56 43 59 42 Temp 59 52 49 49 48 49 51 55 55 50 48 46 46 48 52 58 59 53 48 45 43 Dewpt 50 49 48 48 48 49 50 52 50 49 48 46 46 48 47 49 47 48 46 44 43 RH 72 89 96 96100100 96 90 83 96100100100100 83 72 64 83 93 96100 Wind dir NE N N NE NE NE NE NE N N N N N N N N NE NE NE SE S Wind spd 17 14 11 10 9 9 9 11 13 18 13 11 9 8 5 5 5 5 4 2 1 Clouds OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 B1 B1 PoP 12hr 80 100 70 30 10 QPF 12hr 0.20 0.29 0.06 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L C L L D D D C C C C C C C Tstms C S S S S C S S Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 71 46 76 48 76 49 77 49 75 Temp 63 71 54 47 70 74 56 50 71 74 57 50 71 75 57 50 70 73 Dewpt 51 48 49 47 50 47 49 47 50 48 49 47 48 45 47 45 46 44 PWind dir SE SE W NW NW NW W W NW Wind char LT LT LT LT LT LT LT GN LT Avg clouds B1 SC SC SC B1 SC SC B1 B2 B1 B1 B1 B1 SC B1 B1 B1 SC PoP 12hr 5 10 20 10 10 20 20 20 20 Rain shwrs S S S S S S Tstms S S S S $$ MTZ319-131000- Helena-Lewis & Clark MT 46.61N 111.96W Elev. 3893 ft 331 PM MDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat 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 53 69 52 67 51 Temp 78 68 63 58 54 54 61 66 67 60 58 56 54 52 58 64 66 61 57 53 51 Dewpt 47 49 53 54 52 53 53 53 50 49 52 52 51 51 54 54 50 51 52 51 50 RH 33 51 70 86 93 96 75 63 54 67 80 86 90 96 86 70 56 70 83 93 96 Wind dir N N NW NW W NW N N N NW W W NW N N N N NW N N N Wind spd 13 19 17 10 6 4 5 9 11 12 11 10 8 6 2 5 5 5 0 0 0 Clouds SC B2 B2 B2 B2 B2 B1 B1 OV OV OV OV OV OV OV OV B2 B2 B1 B2 B2 PoP 12hr 60 40 80 80 60 QPF 12hr 0.04 0.02 0.36 0.11 0.08 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C L C S S C C D L C L L D D L L Tstms S S S S S C C S S C S Obvis K K Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 82 52 82 52 80 Temp 67 76 60 50 73 79 62 52 74 79 62 52 74 80 62 52 72 78 Dewpt 56 50 52 49 55 48 51 49 54 49 53 50 53 47 50 48 50 46 PWind dir E SW S W SE SW S W SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 SC SC SC B1 SC SC B1 B1 SC B1 B1 B1 B1 B1 PoP 12hr 30 40 20 20 20 30 30 30 30 Rain shwrs C C S S S C C C S C Tstms C S S S S S S S S $$ MTZ326-131000- Bozeman-Gallatin MT 45.78N 111.16W Elev. 4475 ft 331 PM MDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 50 74 49 70 47 Temp 82 66 61 56 53 56 67 72 68 59 57 55 53 55 62 67 66 58 57 52 49 Dewpt 42 51 55 56 53 52 53 49 51 54 56 55 53 55 55 53 53 55 57 52 49 RH 24 58 81100100 86 61 44 54 83 96100100100 78 61 63 90100100100 Wind dir NW NE SW W SW NW N N SE SE NW SW S SW W NW NW SE E SE N Wind spd 8 9 8 4 2 3 3 4 10 5 3 3 1 3 2 3 4 5 3 2 0 Clouds B2 B2 B1 SC SC B1 SC B1 OV OV OV OV B2 B2 OV OV B2 B2 OV B2 B2 PoP 12hr 40 40 80 90 70 QPF 12hr 0.03 0.02 0.29 0.27 0.11 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S C L L D C L L D D L L Tstms S S C C S S C C C S Obvis K K K K K K Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 75 47 79 48 79 49 80 50 79 Temp 66 73 57 48 71 77 59 50 73 76 59 50 72 77 60 50 71 76 Dewpt 57 52 55 48 55 49 53 50 53 51 55 50 53 49 52 50 51 48 PWind dir NW S SW SE SW SE SW SE SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 SC FW SC B1 SC SC B2 B2 B1 SC B1 B1 B1 SC PoP 12hr 40 40 10 10 10 50 20 30 30 Rain shwrs C C C S S C S C S Tstms C C S S S S $$ MTZ330-131000- West Yellowstone-Gallatin MT 44.69N 111.11W Elev. 6644 ft 331 PM MDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat 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 40 68 38 65 35 Temp 74 62 52 46 42 51 67 66 62 54 50 46 42 47 59 64 63 54 49 43 38 Dewpt 42 49 49 46 42 45 43 42 47 51 50 46 42 47 51 48 50 51 49 43 38 RH 32 62 89100100 80 42 42 58 90100100100100 75 56 62 90100100100 Wind dir NW E NE NE N N SW SW SW N NE W S N SW SW SW N N N N Wind spd 9 4 2 2 1 1 8 10 5 2 1 1 1 0 5 9 4 0 0 0 0 Clouds B1 B2 B1 B1 B1 B1 B1 B2 OV OV OV OV B2 B2 OV OV B2 B2 B2 B2 B2 PoP 12hr 40 60 80 90 70 QPF 12hr 0.04 0.04 0.08 0.21 0.07 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S L D C C L L L D D L L S S C Tstms C S C C S C C C Obvis K Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 70 33 74 36 74 37 74 38 74 Temp 64 68 48 35 69 72 50 39 71 71 50 39 70 72 51 39 68 72 Dewpt 54 49 48 35 49 43 47 39 49 46 49 39 48 44 47 39 46 42 PWind dir SW SW SW W SW SW SW SW SW Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B2 SC SC SC FW SC SC SC SC B1 B1 B1 SC B1 B1 B2 SC PoP 12hr 70 20 5 5 20 30 20 30 30 Rain shwrs C L S S C S S C C C S Tstms C S S S S S S $$ MTZ328-131000- Dillon-Beaverhead MT 45.26N 112.55W Elev. 5357 ft 331 PM MDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 48 73 48 70 45 Temp 78 65 58 53 50 53 65 71 66 58 54 52 51 54 62 67 65 56 54 50 47 Dewpt 47 50 51 51 50 52 51 49 56 55 54 52 51 54 52 54 59 56 54 50 47 RH 33 58 77 93100 96 60 46 70 90100100100100 70 63 81100100100100 Wind dir SE NE N NE N N N N S NE N NW S S W W N E S S S Wind spd 9 10 8 5 5 4 3 5 8 5 5 4 4 3 2 4 6 3 3 3 4 Clouds B2 B2 B1 SC B1 B1 B2 B2 OV OV OV OV B2 B1 OV OV B2 B2 B2 OV B2 PoP 12hr 20 70 70 90 70 QPF 12hr 0 0.09 0.11 0.17 0.06 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C L L L C C C D D L L Tstms S C C S C C C Obvis K K K K K K K K Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 73 45 77 47 77 47 78 48 77 Temp 65 70 54 47 69 73 56 49 71 73 56 49 70 74 57 49 69 73 Dewpt 56 57 54 47 54 54 53 49 54 55 54 49 53 54 51 48 51 52 PWind dir SW S SW S SW S SW S S Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 SC FW SC B1 B1 SC B2 B2 B1 SC B1 B2 B1 SC PoP 12hr 50 50 10 20 20 30 20 30 30 Rain shwrs C C S S S C S C S C C Tstms C C S S S S S S $$ MTZ305-131000- Havre-Hill MT 48.54N 109.76W Elev. 2585 ft 331 PM MDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat 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 48 63 47 67 45 Temp 71 62 56 55 52 53 57 60 61 56 54 53 51 53 60 65 66 59 53 49 46 Dewpt 53 54 54 55 52 52 53 53 53 54 54 53 51 52 53 52 51 51 51 49 46 RH 53 75 93100100 96 86 78 75 93100100100 96 78 63 58 75 93100100 Wind dir NE NE NE NE E E E E E NE E NE E N NW NW N N N NE N Wind spd 20 18 10 9 10 11 12 11 11 11 8 6 6 8 8 8 8 5 4 4 0 Clouds B1 B2 OV OV OV OV OV B2 OV OV OV OV OV OV OV B2 B2 B2 B1 B2 B1 PoP 12hr 90 90 60 20 20 QPF 12hr 0.27 0.48 0.06 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S D D D D D L L S C S S S S Tstms S S S S S S Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 76 48 83 50 83 51 84 52 83 Temp 68 75 58 50 74 80 61 53 76 80 61 53 76 81 61 53 75 80 Dewpt 53 51 54 50 56 50 53 52 54 50 54 52 53 49 53 50 51 47 PWind dir NE E S E NE E SW SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC B1 FW SC SC B1 SC B1 B1 B1 SC B1 B1 B1 SC PoP 12hr 10 10 10 10 5 30 20 30 10 Rain shwrs C C S C S Tstms S S S $$ MTZ314-131000- Lewistown-Fergus MT 47.05N 109.46W Elev. 4144 ft 331 PM MDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat MDT 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 48 64 47 64 45 Temp 73 63 57 54 52 53 59 62 62 57 55 54 51 53 57 62 63 57 54 51 47 Dewpt 53 55 55 54 52 53 56 55 55 57 55 54 51 53 57 55 55 56 54 51 47 RH 49 75 93100100100 90 78 78100100100100100100 78 75 96100100100 Wind dir E NE E E E E E E E E E E NE NW NW N NE NE S S SE Wind spd 10 11 9 6 6 8 8 8 9 6 5 5 5 4 4 4 3 3 3 3 2 Clouds B1 B2 OV OV B2 B2 B1 B1 OV OV OV OV OV OV B2 B2 OV OV OV OV B2 PoP 12hr 90 80 80 80 70 QPF 12hr 0.25 0.11 0.12 0.19 0.09 Snow 12hr 00-00 00-00 00-00 Rain shwrs S L D C L L C C C C C D D D C C L L C C C Tstms S C S S C C C C S S S S S Obvis K K Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 MDT 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 72 47 77 49 79 50 79 50 78 Temp 66 70 56 49 73 75 58 54 75 74 58 52 74 75 58 51 73 74 Dewpt 56 56 55 49 54 53 53 50 52 53 53 50 50 51 51 48 49 49 PWind dir SE SE SW SE W S W SW W Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 B1 B1 B1 SC B1 SC SC SC B1 B1 B1 SC SC B1 B1 B1 B1 PoP 12hr 50 20 30 20 30 40 30 30 30 Rain shwrs C C S C S C C C C S C Tstms S S S S S S S S $$ http://www.weather.gov/greatfalls