Gander Intl Arpt climate by month
Averages and records for each calendar month at Gander Intl Arpt, Canada, from 1957 to 2025. The warmest month is July, averaging 23.5°C; the coolest is February at −2.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −1.5°C | −9.6°C | 14.2°C16 January 2006 | −24.1°C15 January 1988 | 16 / 50 |
| February | −2.4°C | −10.9°C | 13.4°C26 February 1996 | −30.2°C18 February 1990 | 16 / 49 |
| March | 0.6°C | −7.6°C | 18.1°C29 March 1999 | −28.8°C11 March 1986 | 19 / 49 |
| April | 6.3°C | −2.7°C | 22.6°C24 April 1986 | −15.6°C6 April 1995 | 19 / 48 |
| May | 12.4°C | 1.4°C | 28.9°C29 May 2020 | −7.3°C10 May 1993 | 17 / 48 |
| June | 18.4°C | 6.4°C | 33.3°C20 June 2024 | −3.0°C2 June 1978 | 18 / 48 |
| July | 23.5°C | 11.0°C | 33.6°C18 July 2025 | 1.8°C2 July 1995 | 23 / 50 |
| August | 22.4°C | 11.3°C | 34.6°C13 August 2025 | 0.0°C27 August 1993 | 26 / 50 |
| September | 17.4°C | 7.2°C | 29.1°C15 September 2003 | −1.0°C30 September 1986 | 20 / 49 |
| October | 11.6°C | 2.3°C | 24.7°C2 October 2010 | −7.2°C27 October 1986 | 27 / 49 |
| November | 5.2°C | −2.1°C | 18.4°C7 November 2022 | −15.7°C26 November 1993 | 22 / 49 |
| December | 0.2°C | −6.7°C | 14.2°C2 December 2020 | −22.8°C28 December 1984 | 18 / 49 |
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 27 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.