Galesburg Weather Records

Galesburg, Illinois weather averages and records from 1895–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Galesburg, Illinois was 112 °F which occurred on July 15, 1936.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Galesburg, Illinois was -28 °F which occurred on February 13, 1905.
Lowest Temperatures: All-Time By Year
Galesburg Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 30.4 14.8 68 -27 1.7 8.5
February 35.2 18.6 74 -28 1.9 6.6
March 48.5 29.2 86 -14 2.4 2.3
April 61.8 40.2 91 9 3.8 0.9
May 72.5 52.0 96 24 5.3 0.0
June 81.4 62.0 102 36 4.6 0.0
July 84.3 65.6 112 42 4.0 0.0
August 82.5 63.6 102 41 3.9 0.0
September 76.4 55.3 100 19 3.8 0.0
October 63.2 43.0 94 17 2.8 0.0
November 48.3 30.9 79 -6 2.6 1.4
December 35.6 21.1 72 -22 2.1 5.8
Entire year 60.2 41.6 112 -28 38.8 23.6
More Galesburg Weather Records
1895–2024
Highest daily low 84 °F July 27, 1936
Lowest daily high -12 °F February 3, 1996
Greatest daily range
(Difference of high and low)
62 °F February 28, 2024
Greatest difference in daily high
over two conscutive days
50 °F Jan 18–19, 1996
Most daily precipitation 7.7 inches September 8, 1927
Most monthly precipitation 16.6 inches October 1941
Most yearly precipitation 54.3 inches 2009
Most yearly days with precipitation 136 1993
Earliest snow in season September 25 1942
Latest snow in season May 19 1900
Most daily snow 15.0 inches February 2, 2011
Most monthly snow 27.3 inches May 1900
Most yearly snow 69.3 inches 1900
Most snow in a winter 64.3 inches 1899–1900
Greatest snow accumulation 26.0 inches January 16, 1979
Earliest freeze September 19 1901
Earliest day ≥ 80 °F March 16 2012
Earliest day ≥ 90 °F April 25 1986
Earliest day ≥ 100 °F June 25 1988
Latest freeze May 11 1907
Latest day ≥ 80 °F October 31 1968
Latest day ≥ 90 °F October 6 1963
Latest day ≥ 100 °F September 5 1899
Most days in a year < 0 °F 37 1963
Most days in a year < 32 °F 156 1901
Most days in a year ≥ 80 °F 119 2007
Most days in a year ≥ 90 °F 50 1901
Most days in a year ≥ 100 °F 21 1936
Most days in a year ≥ 110 °F 1 1936
Galesburg Weather Streaks
Most consecutive days...
With precipitation 15 days Apr 13–27, 1992
Without precipitation 40 days Dec 15, 1943 – Jan 23, 1944
With snow 5 days Dec 14–18, 1983
High temperature at or
below freezing
38 days Dec 29, 1976 – Feb 4, 1977
High temperature ≥ 80 °F 82 days Jun 10 – Aug 30, 1901
High temperature ≥ 90 °F 21 days Jul 9–29, 1901
High temperature ≥ 100 °F 14 days Jul 4–17, 1936
Plant Hardiness Zone
5B
Galesburg is in plant hardiness zone 5B
based on average yearly minimum temperature from 1991–2020
Galesburg Weather by Year
More Galesburg Weather
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Weather Station Details
Years Station Coordinates
1895–2024 Galesburg location