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Clayton city, Idaho

Official LSAD Designation: Clayton city • Census GEOID: 1615490 • Custer County

Climate Normals & Weather Observations

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

Reference Weather Station: CHALLIS AP, ID US (ID: USW00004114) • Located 20.0 miles from community center • Elevation: 1,534.1 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 29.2° 10.7° 20.0° 0.41"
February 36.7° 17.0° 26.8° 0.36"
March 49.2° 25.5° 37.3° 0.46"
April 56.8° 31.2° 44.0° 0.52"
May 66.8° 40.0° 53.4° 0.93"
June 75.5° 46.3° 60.9° 0.93"
July 86.9° 51.7° 69.3° 0.42"
August 84.9° 49.9° 67.4° 0.45"
September 74.5° 42.0° 58.2° 0.85"
October 58.5° 31.6° 45.0° 0.56"
November 40.5° 20.6° 30.5° 0.52"
December 28.8° 10.8° 19.8° 0.52"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station CHALLIS AP, ID US (ID: USW00004114) • 20.0 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 CHALLIS AP, 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. 25.0 35.0 45.0 55.0 65.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 42.5°F 2011: Annual mean 42.7°F 2012: Annual mean 45.4°F 2013: Annual mean 43.6°F 2015: Annual mean 46.2°F 2016: Annual mean 44.0°F 2017: Annual mean 43.6°F 2018: Annual mean 46.7°F 2019: Annual mean 43.7°F 2021: Annual mean 46.7°F 2023: Annual mean 43.0°F 2025: Annual mean 46.8°F 2010: Annual mean of daily highs 55.5°F 2011: Annual mean of daily highs 56.5°F 2012: Annual mean of daily highs 60.1°F 2013: Annual mean of daily highs 58.0°F 2014: Annual mean of daily highs 58.8°F 2015: Annual mean of daily highs 60.1°F 2016: Annual mean of daily highs 58.1°F 2017: Annual mean of daily highs 57.2°F 2018: Annual mean of daily highs 60.9°F 2019: Annual mean of daily highs 57.3°F 2021: Annual mean of daily highs 61.0°F 2023: Annual mean of daily highs 56.4°F 2025: Annual mean of daily highs 60.8°F 2010: Annual mean of daily lows 29.5°F 2011: Annual mean of daily lows 28.8°F 2012: Annual mean of daily lows 30.6°F 2013: Annual mean of daily lows 29.3°F 2015: Annual mean of daily lows 32.4°F 2016: Annual mean of daily lows 30.0°F 2017: Annual mean of daily lows 29.9°F 2018: Annual mean of daily lows 32.5°F 2019: Annual mean of daily lows 30.1°F 2021: Annual mean of daily lows 32.5°F 2022: Annual mean of daily lows 29.4°F 2023: Annual mean of daily lows 29.6°F 2025: Annual mean of daily lows 32.8°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 42.5 55.5 29.5
2011 42.7 56.5 28.8
2012 45.4 60.1 30.6
2013 43.6 58.0 29.3
2014 Unavailable 58.8 Unavailable
2015 46.2 60.1 32.4
2016 44.0 58.1 30.0
2017 43.6 57.2 29.9
2018 46.7 60.9 32.5
2019 43.7 57.3 30.1
2020 Unavailable Unavailable Unavailable
2021 46.7 61.0 32.5
2022 Unavailable Unavailable 29.4
2023 43.0 56.4 29.6
2024 Unavailable Unavailable Unavailable
2025 46.8 60.8 32.8
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.