FPUS65 KTFX 180436 SFTTFX MTZ301>330-181100- Tabular State Forecast for North Central and Southwest Montana National Weather Service Great Falls MT 1036 PM MDT Sun May 17 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 Mon Tue Wed Thu Fri Sat Sun May 18 May 19 May 20 May 21 May 22 May 23 May 24 ...CENTRAL MONTANA... Great Falls Ptcldy Ptcldy Rain Ptcldy Ptcldy Sunny Ptcldy 28/52 29/63 40/61 38/67 43/68 43/76 48/77 90/10 00/30 10/60 60/10 20/30 10/00 10/10 Cut Bank Ptcldy Ptcldy Rain Ptcldy Ptcldy Ptcldy Ptcldy 24/54 31/63 38/57 34/65 39/66 40/72 43/72 20/20 10/20 10/60 40/10 20/30 00/10 10/00 Havre Ptcldy Rain Mocldy Ptcldy Ptcldy Ptcldy Sunny 27/54 26/66 41/64 36/68 41/69 42/77 46/78 40/10 00/50 10/40 30/10 30/20 10/10 10/10 Helena Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Sunny 31/55 29/62 38/65 38/67 40/71 41/76 44/78 30/10 10/20 00/30 70/10 10/20 10/10 10/10 Lewistown Mocldy Ptcldy Rain Ptcldy Ptcldy Ptcldy Sunny 27/46 23/59 36/59 35/62 39/64 39/72 44/75 60/40 00/30 00/50 70/20 20/40 10/10 10/20 Shelby Ptcldy Ptcldy Rain Ptcldy Ptcldy Ptcldy Ptcldy 26/55 28/64 40/60 36/67 41/67 41/75 44/75 20/10 10/30 10/50 40/10 20/30 10/10 10/10 Chester Ptcldy Ptcldy Rain Ptcldy Ptcldy Ptcldy Ptcldy 25/54 27/65 38/61 35/67 39/68 40/76 43/77 20/10 00/30 10/50 30/10 30/20 10/10 10/10 Chinook Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny 28/53 25/65 41/64 37/69 41/69 42/78 46/79 40/10 00/30 10/40 30/10 30/30 20/10 10/10 Conrad Ptcldy Ptcldy Rain Ptcldy Ptcldy Ptcldy Ptcldy 26/55 28/65 39/60 35/67 40/67 40/75 44/76 20/20 10/20 00/70 50/10 20/30 10/00 10/10 Choteau Ptcldy Ptcldy Rain Ptcldy Ptcldy Ptcldy Sunny 25/54 27/63 38/59 35/66 40/67 41/75 45/76 40/30 10/20 00/70 60/10 10/30 10/00 10/00 Fort Benton Ptcldy Ptcldy Rain Ptcldy Ptcldy Ptcldy Sunny 30/55 28/66 42/65 39/69 43/70 43/80 47/80 90/10 00/30 00/50 50/10 20/30 10/00 10/10 Stanford Ptcldy Ptcldy Rain Ptcldy Ptcldy Ptcldy Sunny 27/45 24/59 39/59 36/62 41/64 42/72 47/74 70/20 00/30 00/60 70/20 20/40 10/10 10/10 White Sulphur Springs Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny 26/47 22/56 34/59 34/62 38/65 38/72 42/74 20/20 00/20 00/30 70/10 20/30 20/10 10/10 ...SOUTHWEST MONTANA... Bozeman Airport Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny 25/51 22/60 34/64 34/65 38/69 38/76 42/79 20/10 00/10 00/10 70/10 20/30 10/10 10/10 Bozeman MSU Mocldy Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny 27/46 24/5836/63 36/64 40/68 40/75 45/78 20/20 10/10 00/20 80/10 20/30 10/10 10/10 West Yellowstone Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny 21/41 16/51 24/58 28/61 30/65 31/71 34/74 10/10 10/20 00/10 50/10 20/20 00/10 10/10 Dillon Sunny Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny 25/48 23/60 30/63 34/66 38/70 38/76 42/78 20/10 10/20 00/00 40/10 10/10 00/10 10/10 Boulder Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny 28/50 26/58 33/61 36/64 40/67 41/74 44/75 20/10 10/20 00/30 60/10 10/20 10/10 10/10 Townsend Sunny Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny 32/52 29/61 39/63 39/66 43/69 43/76 46/78 20/10 10/30 00/20 60/10 10/20 20/10 10/10 Virginia City Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy Sunny Sunny 25/40 23/53 31/56 35/58 39/61 40/67 44/70 20/20 00/20 00/10 70/10 20/20 00/10 10/10 $$ http://www.weather.gov/greatfalls