FPUS65 KTFX 191832 SFTTFX MTZ301>330-192300- Tabular State Forecast for North Central and Southwest Montana National Weather Service Great Falls MT 1231 PM MDT Tue May 19 2026 ROWS INCLUDE... Daily predominant daytime weather 6AM-6PM Forecast temperatures...early morning low/daytime high Probability of precipitation nighttime 6PM-6AM/daytime 6AM-6PM - indicates temperatures below zero MM indicates missing data FCST FCST FCST FCST FCST FCST FCST Today Wed Thu Fri Sat Sun Mon May 19 May 20 May 21 May 22 May 23 May 24 May 25 ...CENTRAL MONTANA... Great Falls Ptcldy Tstrms Ptcldy Ptcldy Sunny Sunny Ptcldy /64 39/57 38/61 38/70 43/77 49/80 52/80 /40 20/90 60/20 00/00 00/00 00/00 00/10 Cut Bank Ptcldy Rain Ptcldy Ptcldy Sunny Sunny Ptcldy /62 38/54 34/62 37/69 41/74 46/76 48/74 /20 10/80 50/00 00/00 00/00 00/00 00/10 Havre Ptcldy Rain Ptcldy Ptcldy Sunny Sunny Ptcldy /68 39/62 35/65 36/73 43/79 48/82 51/83 /30 30/60 20/10 00/00 00/00 10/00 00/10 Helena Ptcldy Tstrms Ptcldy Ptcldy Sunny Sunny Ptcldy /65 38/64 38/61 37/70 40/76 44/79 46/80 /20 20/60 90/30 00/00 00/00 00/00 00/20 Lewistown Ptcldy Tstrms Mocldy Sunny Sunny Sunny Ptcldy /60 35/58 35/55 34/67 39/72 44/76 47/79 /30 20/80 70/40 00/00 00/00 00/10 10/10 Shelby Ptcldy Rain Ptcldy Ptcldy Sunny Sunny Ptcldy /64 39/57 35/63 37/71 42/77 47/79 48/78 /30 10/70 30/00 00/00 00/10 00/00 00/10 Chester Ptcldy Rain Ptcldy Ptcldy Sunny Sunny Ptcldy /65 38/58 34/63 36/73 40/77 45/80 47/80 /40 30/60 20/10 00/00 00/10 00/00 00/10 Chinook Ptcldy Shwrs Ptcldy Ptcldy Sunny Sunny Ptcldy /68 39/63 37/65 37/72 43/79 47/83 50/84 /20 20/60 10/10 00/00 00/10 10/00 00/10 Conrad Ptcldy Rain Ptcldy Ptcldy Sunny Sunny Ptcldy /64 38/55 35/63 37/71 42/76 46/79 48/78 /20 10/90 40/00 00/00 00/10 00/00 00/10 Choteau Ptcldy Tstrms Ptcldy Ptcldy Sunny Ptcldy Ptcldy /64 37/54 34/61 37/70 42/76 46/79 48/78 /30 20/90 60/00 00/00 00/00 00/00 00/10 Fort Benton Ptcldy Tstrms Ptcldy Sunny Sunny Sunny Ptcldy /68 41/61 39/65 38/75 43/80 48/83 50/83 /30 20/70 30/10 00/00 00/00 00/00 00/10 Stanford Ptcldy Tstrms Ptcldy Sunny Sunny Sunny Ptcldy /60 38/57 37/56 35/65 42/72 48/76 51/78 /30 20/90 60/40 00/00 00/10 00/10 00/10 White Sulphur Springs Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny Ptcldy /59 33/58 34/55 32/64 37/71 42/76 45/77 /20 20/40 90/30 00/10 00/00 00/10 00/10 ...SOUTHWEST MONTANA... Bozeman Airport Ptcldy Ptcldy Rain Ptcldy Sunny Sunny Sunny /62 33/62 35/55 31/67 38/75 42/80 45/81 /10 20/20 100/70 00/00 00/00 10/00 10/20 Bozeman MSU Ptcldy Ptcldy Rnsnow Ptcldy Sunny Sunny Sunny /60 36/6136/53 33/65 40/74 45/78 48/80 /10 20/30 90/80 00/00 00/00 10/00 10/20 West Yellowstone Ptcldy Ptcldy Rnsnow Ptcldy Sunny Sunny Sunny /54 26/57 30/51 24/62 30/68 34/74 37/76 /10 10/30 90/60 00/10 00/00 10/10 00/10 Dillon Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny Sunny /61 34/62 35/57 32/67 38/75 42/79 44/80 /10 20/10 90/40 00/00 00/00 00/10 00/10 Boulder Ptcldy Tstrms Ptcldy Ptcldy Sunny Sunny Sunny /60 35/60 37/57 36/67 40/73 45/78 47/77 /30 20/60 90/30 00/00 00/10 00/10 00/20 Townsend Ptcldy Tstrms Ptcldy Ptcldy Sunny Sunny Ptcldy /62 39/61 40/60 39/68 43/75 47/79 49/80 /20 30/50 90/20 00/00 00/10 10/10 10/10 Virginia City Ptcldy Ptcldy Rnsnow Ptcldy Sunny Sunny Sunny /54 34/55 36/49 33/60 39/66 44/71 47/72 /10 20/20 90/70 00/00 00/10 10/10 10/20 $$ http://www.weather.gov/greatfalls