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Sandwich city, Illinois

Official LSAD Designation: Sandwich city • Census GEOID: 1767548 • DeKalb County / Kendall County

Climate Normals & Weather Observations

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

Reference Weather Station: CHICAGO AURORA MUNI AP, IL US (ID: USW00004808) • Located 10.9 miles from community center • Elevation: 216.4 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 30.5° 14.7° 22.6° 1.30"
February 34.9° 18.0° 26.5° 1.41"
March 47.5° 28.1° 37.8° 2.21"
April 60.4° 37.2° 48.8° 3.60"
May 71.9° 49.0° 60.4° 4.06"
June 81.4° 58.5° 69.9° 3.98"
July 84.4° 61.8° 73.1° 3.71"
August 82.2° 59.5° 70.9° 3.35"
September 76.2° 51.6° 63.9° 3.01"
October 63.3° 40.6° 51.9° 3.23"
November 48.1° 29.2° 38.6° 2.30"
December 35.8° 20.6° 28.2° 1.68"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station CHICAGO AURORA MUNI AP, IL US (ID: USW00004808) • 10.9 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 CHICAGO AURORA MUNI AP, 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. 34.0 42.0 50.0 58.0 66.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 49.4°F 2011: Annual mean 49.3°F 2012: Annual mean 51.9°F 2013: Annual mean 47.4°F 2015: Annual mean 49.4°F 2016: Annual mean 51.9°F 2017: Annual mean 51.0°F 2018: Annual mean 49.1°F 2019: Annual mean 48.2°F 2020: Annual mean 50.2°F 2021: Annual mean 50.2°F 2022: Annual mean 48.3°F 2023: Annual mean 50.7°F 2024: Annual mean 52.5°F 2025: Annual mean 50.4°F 2010: Annual mean of daily highs 59.9°F 2011: Annual mean of daily highs 59.1°F 2012: Annual mean of daily highs 63.2°F 2013: Annual mean of daily highs 57.7°F 2015: Annual mean of daily highs 59.9°F 2016: Annual mean of daily highs 61.8°F 2017: Annual mean of daily highs 61.4°F 2018: Annual mean of daily highs 59.3°F 2019: Annual mean of daily highs 58.1°F 2020: Annual mean of daily highs 60.5°F 2021: Annual mean of daily highs 60.8°F 2022: Annual mean of daily highs 58.9°F 2023: Annual mean of daily highs 61.3°F 2024: Annual mean of daily highs 63.2°F 2025: Annual mean of daily highs 61.6°F 2010: Annual mean of daily lows 38.8°F 2011: Annual mean of daily lows 39.5°F 2012: Annual mean of daily lows 40.7°F 2013: Annual mean of daily lows 37.0°F 2015: Annual mean of daily lows 39.0°F 2016: Annual mean of daily lows 41.9°F 2017: Annual mean of daily lows 40.5°F 2018: Annual mean of daily lows 38.9°F 2019: Annual mean of daily lows 38.4°F 2020: Annual mean of daily lows 39.9°F 2021: Annual mean of daily lows 39.5°F 2022: Annual mean of daily lows 37.8°F 2023: Annual mean of daily lows 40.1°F 2024: Annual mean of daily lows 41.8°F 2025: Annual mean of daily lows 39.2°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 49.4 59.9 38.8
2011 49.3 59.1 39.5
2012 51.9 63.2 40.7
2013 47.4 57.7 37.0
2014 Unavailable Unavailable Unavailable
2015 49.4 59.9 39.0
2016 51.9 61.8 41.9
2017 51.0 61.4 40.5
2018 49.1 59.3 38.9
2019 48.2 58.1 38.4
2020 50.2 60.5 39.9
2021 50.2 60.8 39.5
2022 48.3 58.9 37.8
2023 50.7 61.3 40.1
2024 52.5 63.2 41.8
2025 50.4 61.6 39.2
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.