Grosse Isle Muni climate by month
Averages and records for each calendar month at Grosse Isle Muni, United States, from 1945 to 1969. The warmest month is July, averaging 27.2°C; the coolest is January at 0.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 0.1°C | −7.1°C | 17.2°C25 January 1950 | −21.7°C23 January 1948 | 22 / 22 |
| February | 1.3°C | −6.2°C | 18.9°C15 February 1954 | −21.7°C17 February 1958 | 20 / 20 |
| March | 6.3°C | −2.4°C | 25.6°C28 March 1945 | −16.1°C12 March 1948 | 21 / 21 |
| April | 13.4°C | 3.4°C | 28.3°C23 April 1960 | −9.4°C3 April 1954 | 22 / 22 |
| May | 18.9°C | 8.5°C | 32.2°C5 May 1952 | −1.7°C10 May 1966 | 23 / 23 |
| June | 24.7°C | 14.7°C | 36.7°C26 June 1952 | 2.8°C4 June 1947 | 22 / 22 |
| July | 27.2°C | 17.4°C | 36.1°C27 July 1955 | 7.8°C11 July 1945 | 22 / 22 |
| August | 26.6°C | 16.7°C | 35.6°C21 August 1955 | 6.1°C29 August 1965 | 22 / 22 |
| September | 22.8°C | 12.9°C | 37.2°C5 September 1954 | 1.1°C24 September 1950 | 22 / 22 |
| October | 16.8°C | 7.1°C | 31.1°C5 October 1951 | −4.4°C21 October 1952 | 21 / 21 |
| November | 8.2°C | 0.8°C | 25.6°C1 November 1950 | −16.1°C24 November 1950 | 21 / 21 |
| December | 2.1°C | −4.5°C | 16.7°C7 December 1951 | −22.2°C23 December 1960 | 21 / 21 |
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 20 to 23 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.