Missoula Weather Records

Missoula, Montana weather averages and records from 1893–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Missoula, Montana was 107 °F which occurred on July 6, 2007.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Missoula, Montana was -33 °F which occurred on January 26, 1957.
Lowest Temperatures: All-Time By Year
Missoula Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 32.3 18.2 60 -33 1.0 9.8
February 37.4 20.7 66 -28 0.9 8.5
March 48.7 26.9 78 -13 0.9 5.0
April 56.9 32.4 90 2 1.4 1.3
May 66.9 39.9 95 21 1.8 0.3
June 74.0 46.4 102 26 2.1 0.0
July 86.1 51.6 107 27 0.8 0.0
August 85.0 50.2 105 25 0.8 0.0
September 73.3 42.4 99 15 1.0 0.1
October 56.5 32.6 85 -7 1.2 0.9
November 40.8 24.5 73 -23 1.2 5.4
December 31.7 18.3 67 -30 1.1 11.4
Entire year 57.6 33.7 107 -33 14.1 42.6
More Missoula Weather Records
1893–2024
Highest daily low 72 °F July 27, 1939
Lowest daily high -13 °F February 2, 1989
Greatest daily range
(Difference of high and low)
59 °F January 21, 1935
Greatest difference in daily high
over two conscutive days
44 °F Dec 4–5, 1956
Most daily precipitation 2.3 inches November 5, 1927
Most monthly precipitation 7.4 inches May 1980
Most yearly precipitation 21.8 inches 1998
Most yearly days with precipitation 160 1996
Earliest snow in season September 15 1965
Latest snow in season June 11 2008
Most daily snow 19.7 inches February 12, 1936
Most monthly snow 54.1 inches December 1996
Most yearly snow 105.7 inches 1996
Most snow in a winter 111.2 inches 1996–1997
Greatest snow accumulation 27.0 inches December 29, 1996
Earliest freeze August 1 1901
Earliest day ≥ 70 °F March 11 1900
Earliest day ≥ 80 °F April 8 1996
Earliest day ≥ 90 °F April 25 1910
Earliest day ≥ 100 °F June 13 1918
Latest freeze July 14 1901
Latest day ≥ 70 °F November 12 1999
Latest day ≥ 80 °F October 21 2003
Latest day ≥ 90 °F September 24 2014
Latest day ≥ 100 °F August 24 1969
Most days in a year < 0 °F 29 1949
Most days in a year < 32 °F 216 1895
Most days in a year ≥ 80 °F 95 1904
Most days in a year ≥ 90 °F 53 2007
Most days in a year ≥ 100 °F 11 2007
Missoula Weather Streaks
Most consecutive days...
With precipitation 19 days Dec 3–21, 1996
Without precipitation 92 days Jun 12 – Sep 11, 1917
With snow 12 days Dec 10–21, 1996
High temperature at or
below freezing
32 days Jan 8 – Feb 8, 1949
High temperature ≥ 80 °F 76 days Jun 27 – Sep 10, 1904
High temperature ≥ 90 °F 22 days Jun 27 – Jul 18, 2021
High temperature ≥ 100 °F 5 days Jul 28 – Aug 1, 2022
Plant Hardiness Zone
5B
Missoula is in plant hardiness zone 5B
based on average yearly minimum temperature from 1991–2020
Missoula Weather by Year
More Missoula Weather
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Weather Station Details
Years Station Coordinates
1948–2024 Missoula International Airport location
1893–1947 Missoula 6 NW WFO location