Grand Rapids Intl climate by month
Averages and records for each calendar month at Grand Rapids Intl, United States, from 1963 to 2026. The warmest month is July, averaging 28.3°C; the coolest is January at −1.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −1.1°C | −8.4°C | 17.2°C7 January 2008 | −30.0°C19 January 1994 | 63 / 63 |
| February | 0.5°C | −7.9°C | 22.8°C27 February 2024 | −28.3°C17 February 1973 | 63 / 63 |
| March | 6.6°C | −3.3°C | 30.6°C21 March 2012 | −22.2°C2 March 1978 | 63 / 63 |
| April | 14.1°C | 2.5°C | 31.1°C29 April 1970 | −16.1°C7 April 1982 | 63 / 63 |
| May | 20.9°C | 8.3°C | 34.4°C28 May 2018 | −5.6°C10 May 1966 | 63 / 63 |
| June | 26.1°C | 13.8°C | 36.7°C21 June 1988 | 0.6°C11 June 1972 | 63 / 63 |
| July | 28.3°C | 16.3°C | 40.0°C6 July 2012 | 5.0°C6 July 1983 | 63 / 63 |
| August | 27.0°C | 15.4°C | 37.8°C3 August 1964 | 3.9°C30 August 1976 | 63 / 63 |
| September | 22.9°C | 11.2°C | 35.6°C23 September 2017 | −2.8°C28 September 1991 | 62 / 63 |
| October | 15.8°C | 5.1°C | 31.1°C8 October 2007 | −7.8°C21 October 1974 | 62 / 62 |
| November | 8.2°C | −0.1°C | 25.0°C6 November 1975 | −15.0°C28 November 1969 | 62 / 63 |
| December | 1.6°C | −5.1°C | 20.6°C5 December 2001 | −27.8°C19 December 1983 | 63 / 63 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 62 to 63 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.