Niagara Falls Intl climate by month
Averages and records for each calendar month at Niagara Falls Intl, United States, from 1951 to 2026. The warmest month is July, averaging 27.6°C; the coolest is January at −0.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −0.3°C | −7.5°C | 18.3°C13 January 2005 | −26.7°C15 January 1957 | 38 / 39 |
| February | 0.7°C | −7.4°C | 20.0°C21 February 2018 | −24.9°C16 February 2015 | 37 / 37 |
| March | 5.6°C | −3.3°C | 27.2°C21 March 2012 | −22.2°C12 March 1960 | 38 / 38 |
| April | 13.4°C | 2.4°C | 30.0°C27 April 2017 | −11.1°C1 April 1954 | 38 / 38 |
| May | 19.7°C | 8.1°C | 33.9°C30 May 2018 | −4.3°C12 May 2020 | 38 / 38 |
| June | 25.0°C | 13.9°C | 35.0°C27 June 2005 | 2.8°C7 June 1958 | 38 / 39 |
| July | 27.6°C | 16.9°C | 36.1°C13 July 2005 | 7.8°C25 July 1953 | 37 / 40 |
| August | 26.6°C | 16.1°C | 35.0°C4 August 2012 | 7.2°C6 August 1951 | 36 / 37 |
| September | 22.8°C | 11.9°C | 35.6°C3 September 1953 | −1.1°C28 September 1957 | 36 / 38 |
| October | 16.1°C | 6.4°C | 29.4°C5 October 2007 | −5.0°C26 October 1952 | 36 / 38 |
| November | 9.1°C | 0.9°C | 26.7°C5 November 2022 | −18.9°C6 November 1951 | 39 / 40 |
| December | 2.7°C | −4.0°C | 22.2°C14 December 2015 | −20.0°C21 December 1955 | 40 / 40 |
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 36 to 40 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.