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St. Augustine village, Illinois

Official LSAD Designation: St. Augustine village • Census GEOID: 1766677 • Knox County

Climate Normals & Weather Observations

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

Reference Weather Station: AVON, IL US (ID: USC00110356) • Located 4.5 miles from community center • Elevation: 195.1 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 30.8° 13.0° 21.9° 1.83"
February 35.5° 16.6° 26.1° 1.84"
March 48.4° 26.3° 37.4° 2.38"
April 61.8° 37.0° 49.4° 3.62"
May 72.3° 49.1° 60.7° 4.95"
June 80.5° 59.0° 69.8° 4.38"
July 83.7° 62.3° 73.0° 4.23"
August 82.3° 59.8° 71.1° 3.67"
September 76.8° 51.0° 63.9° 3.65"
October 64.2° 39.8° 52.0° 2.85"
November 49.4° 28.5° 39.0° 2.37"
December 36.4° 19.5° 28.0° 1.86"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station AVON, IL US (ID: USC00110356) • 4.5 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 AVON, 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. 35.0 43.5 52.0 60.5 69.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2012: Annual mean 53.6°F 2020: Annual mean 50.5°F 2021: Annual mean 50.8°F 2022: Annual mean 48.7°F 2023: Annual mean 51.6°F 2024: Annual mean 52.3°F 2025: Annual mean 50.7°F 2012: Annual mean of daily highs 65.4°F 2017: Annual mean of daily highs 61.9°F 2020: Annual mean of daily highs 60.8°F 2021: Annual mean of daily highs 60.8°F 2022: Annual mean of daily highs 59.5°F 2023: Annual mean of daily highs 62.7°F 2024: Annual mean of daily highs 63.3°F 2025: Annual mean of daily highs 61.9°F 2012: Annual mean of daily lows 41.7°F 2020: Annual mean of daily lows 40.1°F 2021: Annual mean of daily lows 40.8°F 2022: Annual mean of daily lows 37.9°F 2023: Annual mean of daily lows 40.5°F 2024: Annual mean of daily lows 41.4°F 2025: Annual mean of daily lows 39.5°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 53.6 65.4 41.7
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 Unavailable 61.9 Unavailable
2018 Unavailable Unavailable Unavailable
2019 Unavailable Unavailable Unavailable
2020 50.5 60.8 40.1
2021 50.8 60.8 40.8
2022 48.7 59.5 37.9
2023 51.6 62.7 40.5
2024 52.3 63.3 41.4
2025 50.7 61.9 39.5
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.