Kokomo weather by month
Measured at Peru/Grissom ARB
Averages and records for each calendar month at Peru/Grissom ARB, United States, from 1956 to 2026. The warmest month is July, averaging 28.4°C; the coolest is January at −0.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −0.8°C | −9.5°C | 18.3°C24 January 1967 | −28.3°C28 January 1963 | 16 / 17 |
| February | 1.7°C | −7.0°C | 20.6°C18 February 2026 | −23.9°C2 February 1965 | 17 / 17 |
| March | 8.0°C | −1.7°C | 26.6°C28 March 2025 | −20.0°C6 March 1960 | 17 / 17 |
| April | 15.9°C | 4.8°C | 30.0°C23 April 1960 | −7.2°C2 April 1961 | 17 / 17 |
| May | 21.6°C | 10.1°C | 32.2°C17 May 1958 | −1.7°C27 May 1961 | 17 / 17 |
| June | 27.0°C | 15.4°C | 36.7°C17 June 1957 | 4.4°C2 June 1956 | 17 / 17 |
| July | 28.4°C | 17.5°C | 37.2°C2 July 1966 | 6.7°C10 July 1962 | 17 / 17 |
| August | 27.6°C | 16.2°C | 35.6°C20 August 1962 | 2.8°C29 August 1965 | 17 / 17 |
| September | 24.4°C | 12.2°C | 34.5°C15 September 2026 | 0.6°C30 September 1963 | 16 / 17 |
| October | 18.2°C | 6.1°C | 32.1°C3 October 2025 | −6.7°C26 October 1962 | 16 / 16 |
| November | 9.3°C | 0.1°C | 24.4°C2 November 1961 | −18.3°C30 November 1958 | 16 / 16 |
| December | 2.1°C | −5.7°C | 20.0°C1 December 1970 | −26.7°C31 December 1967 | 16 / 16 |
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 16 to 17 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
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.