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Winchester city, Idaho

Official LSAD Designation: Winchester city • Census GEOID: 1687850 • Lewis County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Winchester city.

Reference Weather Station: WINCHESTER, ID US (ID: USC00109846) • Located 0.2 miles from community center • Elevation: 1,210.7 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 36.6° 22.8° 29.7° 1.75"
February 39.2° 23.3° 31.2° 1.55"
March 45.0° 27.3° 36.1° 2.33"
April 51.5° 32.0° 41.7° 2.68"
May 60.0° 38.5° 49.2° 2.76"
June 66.9° 43.4° 55.1° 2.37"
July 78.1° 48.8° 63.5° 0.84"
August 79.0° 48.5° 63.8° 0.71"
September 69.8° 42.3° 56.1° 1.05"
October 55.6° 34.6° 45.1° 1.84"
November 42.5° 27.8° 35.2° 2.11"
December 34.9° 22.2° 28.6° 1.78"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station WINCHESTER, ID US (ID: USC00109846) • 0.2 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at WINCHESTER, ID US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 31.0 37.8 44.5 51.3 58.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 44.5°F 2011: Annual mean 43.6°F 2012: Annual mean 45.2°F 2013: Annual mean 44.6°F 2010: Annual mean of daily highs 54.3°F 2011: Annual mean of daily highs 53.3°F 2012: Annual mean of daily highs 55.8°F 2013: Annual mean of daily highs 55.2°F 2010: Annual mean of daily lows 34.8°F 2011: Annual mean of daily lows 33.8°F 2012: Annual mean of daily lows 34.7°F 2013: Annual mean of daily lows 34.1°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 44.5 54.3 34.8
2011 43.6 53.3 33.8
2012 45.2 55.8 34.7
2013 44.6 55.2 34.1
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
2019 Unavailable Unavailable Unavailable
2020 Unavailable Unavailable Unavailable
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.