Rochester/Fulton Cnty climate by month
Averages and records for each calendar month at Rochester/Fulton Cnty, United States, from 1904 to 2026. The warmest month is July, averaging 29.3°C; the coolest is January at 0.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 0.4°C | −8.5°C | 20.6°C25 January 1950 | −31.1°C20 January 1985 | 108 / 112 |
| February | 2.2°C | −7.5°C | 22.8°C26 February 2000 | −29.4°C13 February 1905 | 108 / 112 |
| March | 8.4°C | −2.3°C | 30.0°C22 March 2012 | −21.7°C2 March 1980 | 111 / 112 |
| April | 15.6°C | 3.4°C | 33.9°C11 April 1930 | −13.3°C7 April 1982 | 112 / 114 |
| May | 22.0°C | 9.4°C | 35.6°C19 May 1914 | −4.4°C4 May 1926 | 112 / 113 |
| June | 27.3°C | 14.9°C | 40.6°C28 June 1934 | −6.7°C26 June 1926 | 112 / 113 |
| July | 29.3°C | 16.9°C | 42.8°C22 July 1934 | 0.6°C18 July 1925 | 112 / 112 |
| August | 28.3°C | 15.7°C | 38.9°C21 August 1916 | 1.7°C29 August 1965 | 112 / 112 |
| September | 24.7°C | 11.6°C | 39.4°C15 September 1939 | −2.2°C28 September 1951 | 109 / 112 |
| October | 17.9°C | 5.3°C | 32.8°C8 October 1939 | −10.0°C29 October 1925 | 109 / 111 |
| November | 9.6°C | −0.3°C | 27.2°C1 November 1933 | −20.0°C23 November 1950 | 109 / 112 |
| December | 2.7°C | −5.9°C | 21.1°C3 December 1982 | −34.4°C28 December 1924 | 108 / 112 |
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 108 to 112 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.