Grand Marais Bay climate by month
Averages and records for each calendar month at Grand Marais Bay, United States, from 1998 to 2026. The warmest month is July, averaging 21.2°C; the coolest is January at −4.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −4.2°C | −13.3°C | 9.4°C8 January 2003 | −32.8°C17 January 2005 | 27 / 28 |
| February | −3.1°C | −12.8°C | 13.9°C18 February 2017 | −30.5°C12 February 2022 | 27 / 28 |
| March | 1.7°C | −6.8°C | 19.4°C31 March 2010 | −29.3°C2 March 2014 | 28 / 28 |
| April | 7.1°C | −1.0°C | 25.6°C29 April 2007 | −14.3°C20 April 2013 | 28 / 28 |
| May | 12.6°C | 3.2°C | 30.0°C31 May 2002 | −4.4°C3 May 2005 | 28 / 28 |
| June | 16.9°C | 6.7°C | 31.7°C29 June 2012 | −1.0°C1 June 2015 | 28 / 28 |
| July | 21.2°C | 11.0°C | 35.0°C5 July 2021 | 5.0°C1 July 2001 | 27 / 28 |
| August | 21.1°C | 12.4°C | 33.3°C2 August 2024 | 3.9°C20 August 2004 | 29 / 29 |
| September | 17.6°C | 9.4°C | 31.1°C11 September 2011 | −2.2°C27 September 2000 | 28 / 29 |
| October | 11.1°C | 3.5°C | 23.3°C3 October 2023 | −6.6°C30 October 2020 | 26 / 28 |
| November | 4.7°C | −2.7°C | 19.4°C2 November 2005 | −21.0°C30 November 2007 | 25 / 28 |
| December | −1.7°C | −9.9°C | 10.6°C9 December 2020 | −28.8°C31 December 2013 | 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 25 to 29 years each.
See what Grand Marais Bay is doing right now
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.