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Bloomington city, Illinois

Official LSAD Designation: Bloomington city • Census GEOID: 1706613 • McLean County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Bloomington city.

Reference Weather Station: NORMAL 4NE, IL US (ID: USC00116200) • Located 5.2 miles from community center • Elevation: 240.8 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 33.4° 15.6° 24.5° 2.43"
February 38.2° 18.9° 28.5° 1.99"
March 49.8° 27.8° 38.8° 2.61"
April 62.8° 37.9° 50.3° 3.72"
May 74.0° 49.8° 61.9° 4.81"
June 83.3° 59.9° 71.6° 4.08"
July 86.0° 63.0° 74.5° 4.12"
August 84.4° 60.8° 72.6° 3.83"
September 78.8° 53.0° 65.9° 3.22"
October 65.6° 41.8° 53.7° 3.48"
November 50.2° 30.7° 40.5° 2.80"
December 38.3° 21.4° 29.8° 2.30"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station NORMAL 4NE, IL US (ID: USC00116200) • 5.2 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 NORMAL 4NE, 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. 33.0 42.5 52.0 61.5 71.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 50.7°F 2011: Annual mean 51.2°F 2012: Annual mean 54.7°F 2013: Annual mean 50.1°F 2014: Annual mean 47.7°F 2015: Annual mean 51.6°F 2016: Annual mean 53.3°F 2017: Annual mean 52.4°F 2018: Annual mean 50.7°F 2019: Annual mean 50.6°F 2020: Annual mean 51.8°F 2021: Annual mean 52.1°F 2025: Annual mean 52.3°F 2010: Annual mean of daily highs 61.9°F 2011: Annual mean of daily highs 62.5°F 2012: Annual mean of daily highs 67.0°F 2013: Annual mean of daily highs 61.4°F 2014: Annual mean of daily highs 59.0°F 2015: Annual mean of daily highs 62.9°F 2016: Annual mean of daily highs 64.3°F 2017: Annual mean of daily highs 63.7°F 2018: Annual mean of daily highs 62.0°F 2019: Annual mean of daily highs 61.2°F 2020: Annual mean of daily highs 62.6°F 2021: Annual mean of daily highs 62.4°F 2025: Annual mean of daily highs 64.2°F 2010: Annual mean of daily lows 39.6°F 2011: Annual mean of daily lows 39.8°F 2012: Annual mean of daily lows 42.4°F 2013: Annual mean of daily lows 38.7°F 2014: Annual mean of daily lows 36.4°F 2015: Annual mean of daily lows 40.4°F 2016: Annual mean of daily lows 42.4°F 2017: Annual mean of daily lows 41.0°F 2018: Annual mean of daily lows 39.5°F 2019: Annual mean of daily lows 40.1°F 2020: Annual mean of daily lows 41.0°F 2021: Annual mean of daily lows 41.6°F 2025: Annual mean of daily lows 40.5°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 50.7 61.9 39.6
2011 51.2 62.5 39.8
2012 54.7 67.0 42.4
2013 50.1 61.4 38.7
2014 47.7 59.0 36.4
2015 51.6 62.9 40.4
2016 53.3 64.3 42.4
2017 52.4 63.7 41.0
2018 50.7 62.0 39.5
2019 50.6 61.2 40.1
2020 51.8 62.6 41.0
2021 52.1 62.4 41.6
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 52.3 64.2 40.5
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.