Grand Forks Intl climate by month
Averages and records for each calendar month at Grand Forks Intl, United States, from 1941 to 2026. The warmest month is July, averaging 27.6°C; the coolest is January at −9.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −9.5°C | −19.9°C | 11.1°C10 January 1990 | −41.7°C30 January 2004 | 85 / 85 |
| February | −6.6°C | −17.5°C | 19.4°C22 February 2000 | −40.0°C1 February 1996 | 84 / 84 |
| March | 0.6°C | −9.6°C | 26.7°C31 March 1963 | −38.9°C10 March 1948 | 85 / 85 |
| April | 11.0°C | −0.9°C | 37.8°C21 April 1980 | −22.2°C1 April 1970 | 86 / 86 |
| May | 19.7°C | 5.5°C | 38.3°C21 May 1964 | −15.0°C3 May 1967 | 86 / 86 |
| June | 24.7°C | 11.4°C | 39.4°C4 June 2021 | −1.1°C6 June 1953 | 86 / 86 |
| July | 27.6°C | 13.9°C | 40.0°C5 July 1988 | −1.1°C3 July 1972 | 86 / 86 |
| August | 26.8°C | 12.6°C | 40.0°C7 August 1983 | −0.6°C28 August 1986 | 86 / 86 |
| September | 20.9°C | 7.3°C | 39.4°C2 September 1983 | −7.8°C28 September 1942 | 85 / 86 |
| October | 13.1°C | 0.9°C | 33.3°C1 October 1992 | −14.4°C31 October 1991 | 84 / 84 |
| November | 1.9°C | −7.5°C | 23.9°C5 November 1975 | −35.0°C29 November 1985 | 84 / 84 |
| December | −6.5°C | −16.1°C | 13.3°C9 December 1990 | −36.0°C31 December 2021 | 84 / 84 |
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 84 to 86 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.