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Castle Valley town, Utah

Official LSAD Designation: Castle Valley town • Census GEOID: 4911000 • Grand County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Castle Valley town.

Reference Weather Station: CASTLE VALLEY 1SE, UT US (ID: USC00421240) • Located 0.7 miles from community center • Elevation: 1,495.0 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 38.8° 17.9° 28.4° 0.95"
February 46.2° 25.1° 35.7° 1.06"
March 58.1° 33.4° 45.8° 1.11"
April 65.9° 40.5° 53.2° 0.81"
May 76.6° 49.9° 63.3° 0.88"
June 89.3° 60.5° 74.9° 0.59"
July 95.2° 67.7° 81.5° 0.97"
August 92.3° 64.8° 78.6° 1.06"
September 83.4° 56.0° 69.7° 1.31"
October 68.0° 41.7° 54.9° 1.48"
November 52.3° 29.7° 41.0° 1.11"
December 39.0° 19.4° 29.2° 1.01"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station CASTLE VALLEY 1SE, UT US (ID: USC00421240) • 0.7 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 CASTLE VALLEY 1SE, UT 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. 38.0 46.8 55.5 64.3 73.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2016: Annual mean 55.5°F 2017: Annual mean 56.8°F 2018: Annual mean 56.5°F 2019: Annual mean 53.8°F 2020: Annual mean 55.4°F 2021: Annual mean 56.0°F 2022: Annual mean 54.5°F 2023: Annual mean 54.4°F 2016: Annual mean of daily highs 68.2°F 2017: Annual mean of daily highs 69.6°F 2018: Annual mean of daily highs 68.6°F 2019: Annual mean of daily highs 65.9°F 2020: Annual mean of daily highs 68.3°F 2021: Annual mean of daily highs 68.5°F 2022: Annual mean of daily highs 67.3°F 2023: Annual mean of daily highs 66.8°F 2016: Annual mean of daily lows 42.9°F 2017: Annual mean of daily lows 44.1°F 2018: Annual mean of daily lows 44.4°F 2019: Annual mean of daily lows 41.6°F 2020: Annual mean of daily lows 42.5°F 2021: Annual mean of daily lows 43.5°F 2022: Annual mean of daily lows 41.8°F 2023: Annual mean of daily lows 41.9°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 Unavailable Unavailable Unavailable
2011 Unavailable Unavailable Unavailable
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 55.5 68.2 42.9
2017 56.8 69.6 44.1
2018 56.5 68.6 44.4
2019 53.8 65.9 41.6
2020 55.4 68.3 42.5
2021 56.0 68.5 43.5
2022 54.5 67.3 41.8
2023 54.4 66.8 41.9
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.