Grand Island Rgnl climate by month
Averages and records for each calendar month at Grand Island Rgnl, United States, from 1938 to 2026. The warmest month is July, averaging 31.4°C; the coolest is January at 1.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 1.2°C | −10.6°C | 24.4°C10 January 1990 | −33.3°C27 January 1963 | 88 / 88 |
| February | 3.9°C | −8.2°C | 26.7°C25 February 1995 | −32.7°C16 February 2021 | 88 / 88 |
| March | 10.0°C | −2.9°C | 36.7°C21 March 2026 | −29.4°C4 March 1960 | 88 / 89 |
| April | 17.1°C | 3.3°C | 35.6°C26 April 1989 | −13.9°C3 April 1975 | 89 / 89 |
| May | 22.8°C | 9.7°C | 38.9°C14 May 2013 | −5.0°C2 May 1967 | 89 / 89 |
| June | 28.7°C | 15.4°C | 42.2°C15 June 1946 | 2.2°C4 June 1943 | 89 / 89 |
| July | 31.4°C | 18.2°C | 43.9°C12 July 1939 | 5.6°C30 July 1971 | 89 / 89 |
| August | 30.2°C | 17.0°C | 43.3°C16 August 1983 | 4.4°C29 August 1946 | 89 / 89 |
| September | 25.8°C | 11.4°C | 40.0°C6 September 1939 | −5.0°C29 September 1984 | 88 / 89 |
| October | 19.1°C | 4.5°C | 36.1°C11 October 2015 | −12.8°C27 October 1997 | 88 / 88 |
| November | 10.0°C | −3.0°C | 29.4°C3 November 2020 | −23.9°C28 November 1976 | 88 / 88 |
| December | 3.3°C | −8.3°C | 26.7°C6 December 1939 | −32.2°C22 December 1989 | 88 / 88 |
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 88 to 89 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.