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Alpha village, Illinois

Official LSAD Designation: Alpha village • Census GEOID: 1700971 • Henry County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Alpha village.

Reference Weather Station: ALTONA, IL US (ID: USC00110140) • Located 12.3 miles from community center • Elevation: 233.2 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 29.9° 13.0° 21.4° 1.82"
February 35.3° 15.8° 25.5° 2.07"
March 48.1° 26.5° 37.3° 2.58"
April 61.5° 36.9° 49.2° 4.00"
May 72.0° 49.2° 60.6° 5.21"
June 80.5° 58.9° 69.7° 4.72"
July 83.4° 61.8° 72.6° 3.98"
August 81.9° 59.3° 70.6° 3.76"
September 76.3° 51.6° 64.0° 3.81"
October 63.9° 39.8° 51.9° 2.77"
November 48.5° 28.1° 38.3° 2.56"
December 35.4° 18.7° 27.1° 2.10"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station ALTONA, IL US (ID: USC00110140) • 12.3 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 ALTONA, IL 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 40.0 49.0 58.0 67.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2012: Annual mean 52.0°F 2014: Annual mean 45.4°F 2017: Annual mean 51.0°F 2018: Annual mean 49.2°F 2019: Annual mean 49.4°F 2021: Annual mean 51.2°F 2022: Annual mean 48.6°F 2023: Annual mean 52.1°F 2012: Annual mean of daily highs 63.7°F 2014: Annual mean of daily highs 56.1°F 2017: Annual mean of daily highs 62.1°F 2018: Annual mean of daily highs 59.8°F 2019: Annual mean of daily highs 59.8°F 2021: Annual mean of daily highs 61.4°F 2022: Annual mean of daily highs 59.6°F 2023: Annual mean of daily highs 62.9°F 2012: Annual mean of daily lows 40.3°F 2014: Annual mean of daily lows 34.7°F 2017: Annual mean of daily lows 39.9°F 2018: Annual mean of daily lows 38.5°F 2019: Annual mean of daily lows 38.9°F 2021: Annual mean of daily lows 40.9°F 2022: Annual mean of daily lows 37.5°F 2023: Annual mean of daily lows 41.2°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 52.0 63.7 40.3
2013 Unavailable Unavailable Unavailable
2014 45.4 56.1 34.7
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 51.0 62.1 39.9
2018 49.2 59.8 38.5
2019 49.4 59.8 38.9
2020 Unavailable Unavailable Unavailable
2021 51.2 61.4 40.9
2022 48.6 59.6 37.5
2023 52.1 62.9 41.2
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.