Gillette weather by month
Measured at Gillette/Campbell Cnty
Averages and records for each calendar month at Gillette/Campbell Cnty, United States, from 1998 to 2026. The warmest month is July, averaging 31.7°C; the coolest is January at 2.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 2.7°C | −9.2°C | 17.8°C26 January 2015 | −39.9°C13 January 2024 | 28 / 28 |
| February | 2.7°C | −9.8°C | 19.4°C16 February 2017 | −37.1°C14 February 2021 | 28 / 28 |
| March | 9.2°C | −4.7°C | 29.4°C21 March 2026 | −29.4°C2 March 2002 | 27 / 28 |
| April | 13.1°C | −1.2°C | 28.9°C23 April 2012 | −21.1°C2 April 2002 | 28 / 28 |
| May | 18.4°C | 3.9°C | 34.4°C31 May 2020 | −9.4°C2 May 2005 | 28 / 28 |
| June | 25.6°C | 9.0°C | 41.1°C15 June 2021 | −1.0°C18 June 2024 | 27 / 28 |
| July | 31.7°C | 13.8°C | 41.7°C29 July 2006 | 2.8°C12 July 2008 | 27 / 28 |
| August | 30.1°C | 12.4°C | 39.4°C10 August 2000 | 0.0°C17 August 2002 | 28 / 28 |
| September | 24.6°C | 7.5°C | 38.9°C7 September 2022 | −4.3°C14 September 2007 | 26 / 28 |
| October | 15.3°C | 0.6°C | 32.8°C1 October 2011 | −23.2°C25 October 2020 | 27 / 27 |
| November | 8.5°C | −5.2°C | 24.4°C7 November 1999 | −26.6°C22 November 2010 | 27 / 27 |
| December | 3.0°C | −9.3°C | 23.9°C1 December 2021 | −33.8°C21 December 2022 | 27 / 28 |
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 26 to 28 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
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.