Rochester Intl Arpt climate by month
Averages and records for each calendar month at Rochester Intl Arpt, United States, from 1926 to 2026. The warmest month is July, averaging 27.8°C; the coolest is January at 0.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 0.0°C | −7.8°C | 23.3°C25 January 1950 | −27.2°C16 January 1994 | 101 / 101 |
| February | 0.8°C | −7.7°C | 22.8°C21 February 1997 | −30.0°C9 February 1934 | 101 / 101 |
| March | 5.8°C | −3.3°C | 28.9°C26 March 1945 | −22.7°C6 March 2014 | 101 / 101 |
| April | 13.1°C | 2.4°C | 33.9°C30 April 1970 | −10.6°C3 April 1954 | 101 / 101 |
| May | 19.9°C | 8.3°C | 34.4°C14 May 1974 | −3.3°C7 May 1970 | 101 / 101 |
| June | 25.2°C | 13.6°C | 37.8°C21 June 1953 | 1.7°C1 June 1945 | 101 / 101 |
| July | 27.8°C | 16.3°C | 38.9°C9 July 1936 | 5.6°C9 July 1963 | 101 / 101 |
| August | 26.6°C | 15.4°C | 37.2°C26 August 1948 | 2.2°C30 August 1965 | 101 / 101 |
| September | 22.6°C | 11.5°C | 37.2°C3 September 1953 | −2.2°C28 September 1947 | 100 / 101 |
| October | 16.1°C | 5.8°C | 32.8°C5 October 1951 | −6.7°C29 October 1940 | 100 / 100 |
| November | 8.9°C | 0.8°C | 27.2°C1 November 1950 | −15.5°C23 November 2018 | 100 / 100 |
| December | 2.5°C | −4.7°C | 22.2°C3 December 1982 | −26.7°C20 December 1942 | 100 / 100 |
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 100 to 101 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.