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Lewiston Weather Records

Lewiston, Idaho weather data and records from 1894–2022 based on data compiled by the NOAA.
All data displayed in U.S. customary units.
All data displayed in metric units.
All-Time Recorded High
The highest temperature ever recorded in Lewiston, Idaho was 117.0 °F47.2 °C which occurred on July 28, 1939.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Lewiston, Idaho was -22.0 °F-30.0 °C which occurred on December 30, 1968.
Lowest Temperatures: All-Time By Year
Lewiston Weather by Month
Averages based on the years 1991–2020
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
☀️ Average high (°F°C) 41.95.5 46.88.2 54.812.7 62.016.7 71.722.1 78.725.9 90.632.5 89.732.1 79.126.2 62.617.0 48.49.1 40.54.7 64.017.8
🌙 Average low (°F°C) 30.0-1.1 31.4-0.3 35.52.0 40.54.7 47.78.7 53.812.1 60.515.9 60.015.5 52.011.1 41.75.4 34.11.2 29.2-1.6 43.16.2
☀️ Record high (°F°C) 66.018.9 72.022.2 78.125.6 99.037.2 104.040.0 115.046.1 117.047.2 115.046.1 108.042.2 93.934.4 77.025.0 66.018.9 117.047.2
🌙 Record low (°F°C) -22.0-30.0 -15.0-26.1 1.9-16.7 19.9-6.7 23.0-5.0 34.01.1 41.05.0 41.05.0 28.0-2.2 15.1-9.4 -2.9-19.4 -22.0-30.0 -22.0-30.0
💧 Average precipitation (inchescm) 1.12.9 1.02.6 1.33.3 1.43.7 1.74.3 1.33.2 0.51.2 0.51.3 0.61.5 1.12.7 1.23.1 1.12.9 12.832.6
💧 Daily % chance precipitation 36.1 33.4 37.7 37.7 34.1 29.6 12.7 11.1 15.6 28.2 37.1 35.8 29.1
❄️ Average snow (inchescm) 2.76.9 3.89.6 0.82.1 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 0.00.0 1.23.1 3.99.8 12.331.3
❄️ Daily % chance snow 7.4 11.1 3.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.3 12.3 3.1
More Lewiston Weather Records
1894–2022
Highest daily low 79.0 °F26.1 °C July 1, 2021
Lowest daily high -8.0 °F-22.2 °C December 30, 1968
Most daily precipitation 1.8 inches4.6 cm July 10, 1998
Most monthly precipitation 4.8 inches12.2 cm May 1948
Most yearly precipitation 21.4 inches54.4 cm 1940
Earliest freeze September 17 1965
Latest freeze May 12 1985
Earliest snow October 27 1971
Latest snow April 20 1961
Most daily snow 9.0 inches22.9 cm February 6, 1899
Most monthly snow 31.3 inches79.6 cm February 2019
Most yearly snow 40.6 inches103.2 cm 1955
Lewiston Weather Streaks
Most consecutive days...
With precipitation 12 days Jan 10–21, 1978
Without precipitation 83 days Jul 21 – Oct 11, 2012
With snow 7 days Feb 15–21, 2019
High temperature ≤ 32 °F0 °C
freezing temperatures
17 days Jan 14–30, 1957
High temperature ≥ 80 °F27 °C 79 days Jun 24 – Sep 10, 1967
High temperature ≥ 90 °F32 °C 31 days Jul 19 – Aug 18, 1898
High temperature ≥ 100 °F38 °C 11 days Jun 26 – Jul 6, 2021
Facts About Lewiston Weather
Lewiston Weather by Year
More
Weather Station Details
Years Station Coordinates
1948–2022 Lewiston Nez Perce County Airport location
1894–1947 Lewiston WTP location