Great Falls October Weather

Averages and records for weather in Great Falls, Montana in the month of October.
Typical Great Falls October Weather
1991–2020
Average daily high 57.0 °F
Average daily low 33.1 °F
Average monthly precipitation 1.1 inches
Average monthly snow 5.1 inches
Daily chance of precipitation 23.9%
Daily chance of snow 10.8%
Great Falls October Weather Records
1892–2024
Highest temperature 91 °F October 1, 1992
Lowest temperature -11 °F October 30, 1991
Highest daily low 62 °F October 4, 1947
Lowest daily high 6 °F October 31, 1984
Hottest average high temperature 68.2 °F 1944
Coldest average high temperature 45.6 °F 1925
Most daily precipitation 2.3 inches October 3, 2015
Most monthly precipitation 3.4 inches 1975
Most daily snow 8.2 inches October 18, 2020
Most monthly snow 28.0 inches 2020
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
October 1 64.0 38.0 91 9
October 2 63.6 37.7 86 17
October 3 63.3 37.5 91 17
October 4 62.9 37.2 86 18
October 5 62.6 37.0 84 20
October 6 62.4 36.9 83 16
October 7 62.1 36.6 86 15
October 8 61.6 36.3 85 8
October 9 61.1 36.0 84 6
October 10 60.5 35.6 86 0
October 11 59.9 35.1 90 10
October 12 59.4 34.8 85 13
October 13 58.8 34.5 85 14
October 14 58.3 34.0 81 12
October 15 57.6 33.6 80 11
October 16 57.0 33.2 85 14
October 17 56.6 32.9 79 8
October 18 56.2 32.5 81 6
October 19 55.8 32.3 81 2
October 20 55.4 32.1 81 16
October 21 54.8 31.7 80 10
October 22 54.3 31.4 80 5
October 23 53.8 31.0 79 3
October 24 53.4 30.8 78 1
October 25 52.9 30.5 76 -5
October 26 52.6 30.2 78 8
October 27 52.1 29.8 75 -10
October 28 51.5 29.4 76 -5
October 29 51.1 29.1 77 -5
October 30 50.7 28.9 72 -11
October 31 50.3 28.6 72 -9
Weather Station Details
Years Station Coordinates
1937–2024 Great Falls International Airport location
1892–1937 Great Falls 16th Street location