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Alta CDP, California

Official LSAD Designation: Alta CDP • Census GEOID: 0601276 • Placer County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Alta CDP.

Reference Weather Station: BLUE CANYON AP, CA US (ID: USW00023225) • Located 6.4 miles from community center • Elevation: 1,608.1 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 46.5° 34.4° 40.4° 10.55"
February 45.0° 33.1° 39.0° 10.06"
March 48.2° 34.7° 41.5° 8.95"
April 52.0° 37.5° 44.8° 5.11"
May 60.6° 45.6° 53.1° 4.11"
June 69.8° 54.4° 62.1° 1.14"
July 77.8° 62.7° 70.2° 0.04"
August 77.4° 62.1° 69.8° 0.20"
September 72.9° 57.2° 65.1° 0.59"
October 62.9° 48.1° 55.5° 3.59"
November 51.2° 39.0° 45.1° 7.20"
December 44.8° 33.6° 39.2° 10.90"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station BLUE CANYON AP, CA US (ID: USW00023225) • 6.4 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 BLUE CANYON AP, CA 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. 41.0 46.8 52.5 58.3 64.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 50.3°F 2012: Annual mean 52.8°F 2014: Annual mean 54.7°F 2015: Annual mean 54.8°F 2016: Annual mean 52.6°F 2018: Annual mean 53.4°F 2019: Annual mean 50.8°F 2021: Annual mean 54.0°F 2022: Annual mean 53.6°F 2023: Annual mean 50.9°F 2024: Annual mean 53.3°F 2025: Annual mean 53.4°F 2010: Annual mean of daily highs 56.4°F 2012: Annual mean of daily highs 59.3°F 2014: Annual mean of daily highs 61.4°F 2015: Annual mean of daily highs 61.7°F 2016: Annual mean of daily highs 59.2°F 2018: Annual mean of daily highs 60.4°F 2019: Annual mean of daily highs 57.4°F 2021: Annual mean of daily highs 61.4°F 2022: Annual mean of daily highs 60.9°F 2023: Annual mean of daily highs 58.0°F 2024: Annual mean of daily highs 60.4°F 2025: Annual mean of daily highs 60.6°F 2010: Annual mean of daily lows 44.1°F 2012: Annual mean of daily lows 46.2°F 2014: Annual mean of daily lows 48.1°F 2015: Annual mean of daily lows 47.8°F 2016: Annual mean of daily lows 45.9°F 2018: Annual mean of daily lows 46.4°F 2019: Annual mean of daily lows 44.2°F 2021: Annual mean of daily lows 46.6°F 2022: Annual mean of daily lows 46.3°F 2023: Annual mean of daily lows 43.9°F 2024: Annual mean of daily lows 46.3°F 2025: Annual mean of daily lows 46.3°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 50.3 56.4 44.1
2011 Unavailable Unavailable Unavailable
2012 52.8 59.3 46.2
2013 Unavailable Unavailable Unavailable
2014 54.7 61.4 48.1
2015 54.8 61.7 47.8
2016 52.6 59.2 45.9
2017 Unavailable Unavailable Unavailable
2018 53.4 60.4 46.4
2019 50.8 57.4 44.2
2020 Unavailable Unavailable Unavailable
2021 54.0 61.4 46.6
2022 53.6 60.9 46.3
2023 50.9 58.0 43.9
2024 53.3 60.4 46.3
2025 53.4 60.6 46.3
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.