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Annapolis CDP, Illinois

Official LSAD Designation: Annapolis CDP • Census GEOID: 1701556 • Crawford County

Climate Normals & Weather Observations

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

Reference Weather Station: ROBINSON, IL US (ID: USC00117345) • Located 9.7 miles from community center • Elevation: 163.1 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 37.1° 20.1° 28.6° 3.11"
February 42.1° 23.4° 32.8° 2.41"
March 52.9° 32.5° 42.7° 3.64"
April 65.7° 42.8° 54.2° 5.17"
May 75.7° 54.3° 65.0° 4.67"
June 84.7° 63.4° 74.1° 4.57"
July 87.4° 65.7° 76.5° 4.17"
August 86.1° 63.0° 74.5° 3.45"
September 80.9° 55.5° 68.2° 3.66"
October 68.2° 43.8° 56.0° 3.70"
November 53.5° 33.7° 43.6° 3.78"
December 41.7° 25.3° 33.5° 3.15"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station ROBINSON, IL US (ID: USC00117345) • 9.7 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 ROBINSON, 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. 40.0 48.0 56.0 64.0 72.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 54.0°F 2011: Annual mean 54.7°F 2012: Annual mean 57.1°F 2013: Annual mean 52.6°F 2018: Annual mean 54.4°F 2019: Annual mean 54.3°F 2020: Annual mean 54.4°F 2021: Annual mean 55.1°F 2022: Annual mean 54.4°F 2023: Annual mean 56.7°F 2024: Annual mean 56.9°F 2025: Annual mean 54.9°F 2010: Annual mean of daily highs 65.0°F 2011: Annual mean of daily highs 64.8°F 2012: Annual mean of daily highs 68.9°F 2013: Annual mean of daily highs 62.6°F 2018: Annual mean of daily highs 64.6°F 2019: Annual mean of daily highs 64.7°F 2020: Annual mean of daily highs 65.0°F 2021: Annual mean of daily highs 65.8°F 2022: Annual mean of daily highs 65.5°F 2023: Annual mean of daily highs 67.9°F 2024: Annual mean of daily highs 67.4°F 2025: Annual mean of daily highs 65.3°F 2010: Annual mean of daily lows 43.1°F 2011: Annual mean of daily lows 44.7°F 2012: Annual mean of daily lows 45.3°F 2013: Annual mean of daily lows 42.7°F 2018: Annual mean of daily lows 44.2°F 2019: Annual mean of daily lows 43.8°F 2020: Annual mean of daily lows 43.9°F 2021: Annual mean of daily lows 44.5°F 2022: Annual mean of daily lows 43.3°F 2023: Annual mean of daily lows 45.6°F 2024: Annual mean of daily lows 46.4°F 2025: Annual mean of daily lows 44.5°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 54.0 65.0 43.1
2011 54.7 64.8 44.7
2012 57.1 68.9 45.3
2013 52.6 62.6 42.7
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 54.4 64.6 44.2
2019 54.3 64.7 43.8
2020 54.4 65.0 43.9
2021 55.1 65.8 44.5
2022 54.4 65.5 43.3
2023 56.7 67.9 45.6
2024 56.9 67.4 46.4
2025 54.9 65.3 44.5
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.