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Ionia city, Michigan

Official LSAD Designation: Ionia city • Census GEOID: 2640860 • Ionia County

Climate Normals & Weather Observations

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

Reference Weather Station: IONIA 2SSW, MI US (ID: USC00204078) • Located 1.7 miles from community center • Elevation: 245.4 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 28.9° 15.6° 22.3° 2.20"
February 31.6° 16.3° 24.0° 1.71"
March 42.3° 24.3° 33.3° 2.23"
April 55.6° 34.7° 45.2° 3.28"
May 67.9° 46.8° 57.4° 3.97"
June 77.3° 56.7° 67.0° 3.88"
July 80.9° 60.3° 70.6° 3.37"
August 78.9° 58.7° 68.8° 3.69"
September 72.0° 50.5° 61.3° 3.03"
October 59.2° 39.7° 49.4° 3.55"
November 45.5° 30.4° 37.9° 2.79"
December 33.9° 22.0° 28.0° 2.22"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station IONIA 2SSW, MI US (ID: USC00204078) • 1.7 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 IONIA 2SSW, MI 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. 36.0 42.8 49.5 56.3 63.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2011: Annual mean 47.3°F 2012: Annual mean 50.3°F 2011: Annual mean of daily highs 56.1°F 2012: Annual mean of daily highs 60.0°F 2011: Annual mean of daily lows 38.6°F 2012: 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 Unavailable Unavailable Unavailable
2011 47.3 56.1 38.6
2012 50.3 60.0 40.5
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
2019 Unavailable Unavailable Unavailable
2020 Unavailable Unavailable Unavailable
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.