Skip to main content

Sumner city, Illinois

Official LSAD Designation: Sumner city • Census GEOID: 1773703 • Lawrence County

Climate Normals & Weather Observations

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

Reference Weather Station: LAWRENCEVILLE 2WSW, IL US (ID: USC00114957) • Located 8.0 miles from community center • Elevation: 137.5 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 39.1° 21.3° 30.2° 3.26"
February 44.0° 24.5° 34.3° 2.68"
March 54.6° 32.7° 43.7° 3.62"
April 66.6° 42.8° 54.7° 4.38"
May 76.8° 53.6° 65.2° 5.33"
June 85.7° 62.6° 74.1° 5.17"
July 88.3° 65.6° 77.0° 4.15"
August 87.1° 63.3° 75.2° 3.07"
September 81.7° 55.7° 68.7° 3.56"
October 69.5° 44.2° 56.8° 3.86"
November 55.3° 34.0° 44.7° 4.09"
December 43.5° 25.7° 34.6° 3.43"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station LAWRENCEVILLE 2WSW, IL US (ID: USC00114957) • 8.0 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 LAWRENCEVILLE 2WSW, 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. 41.0 48.3 55.5 62.8 70.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2016: Annual mean 55.9°F 2017: Annual mean 56.2°F 2021: Annual mean 55.0°F 2022: Annual mean 53.8°F 2023: Annual mean 56.3°F 2024: Annual mean 56.8°F 2025: Annual mean 54.5°F 2016: Annual mean of daily highs 66.1°F 2017: Annual mean of daily highs 66.7°F 2021: Annual mean of daily highs 64.9°F 2022: Annual mean of daily highs 63.9°F 2023: Annual mean of daily highs 67.2°F 2024: Annual mean of daily highs 67.0°F 2025: Annual mean of daily highs 64.7°F 2016: Annual mean of daily lows 45.8°F 2017: Annual mean of daily lows 45.8°F 2021: Annual mean of daily lows 45.0°F 2022: Annual mean of daily lows 43.6°F 2023: Annual mean of daily lows 45.5°F 2024: Annual mean of daily lows 46.6°F 2025: Annual mean of daily lows 44.3°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 Unavailable Unavailable Unavailable
2011 Unavailable Unavailable Unavailable
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 55.9 66.1 45.8
2017 56.2 66.7 45.8
2018 Unavailable Unavailable Unavailable
2019 Unavailable Unavailable Unavailable
2020 Unavailable Unavailable Unavailable
2021 55.0 64.9 45.0
2022 53.8 63.9 43.6
2023 56.3 67.2 45.5
2024 56.8 67.0 46.6
2025 54.5 64.7 44.3
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.