Western Isl climate by month
Averages and records for each calendar month at Western Isl, Canada, from 1995 to 2026. The warmest month is August, averaging 21.8°C; the coolest is January at −1.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −1.6°C | −7.9°C | 9.9°C2 January 2000 | −24.4°C17 January 1997 | 16 / 17 |
| February | −1.1°C | −7.3°C | 10.7°C23 February 2017 | −26.2°C13 February 2016 | 14 / 16 |
| March | 1.4°C | −4.2°C | 18.5°C8 March 2000 | −17.9°C7 March 1996 | 15 / 16 |
| April | 6.6°C | 0.7°C | 23.3°C16 April 2002 | −11.8°C9 April 1997 | 13 / 16 |
| May | 13.1°C | 5.7°C | 28.6°C30 May 2018 | −2.6°C9 May 2020 | 13 / 15 |
| June | 18.3°C | 11.8°C | 28.6°C14 June 2001 | 0.0°C21 June 2000 | 14 / 15 |
| July | 21.5°C | 17.4°C | 31.2°C4 July 2018 | 10.8°C5 July 2001 | 14 / 16 |
| August | 21.8°C | 18.1°C | 29.7°C4 August 2016 | 11.0°C20 August 2000 | 14 / 17 |
| September | 19.2°C | 14.9°C | 27.6°C5 September 2018 | 2.5°C28 September 2000 | 13 / 17 |
| October | 13.2°C | 8.4°C | 25.1°C4 October 2023 | −2.9°C30 October 2020 | 16 / 17 |
| November | 6.3°C | 1.5°C | 19.7°C5 November 2015 | −12.8°C22 November 2018 | 15 / 16 |
| December | 1.8°C | −3.7°C | 15.1°C5 December 2001 | −20.4°C31 December 2017 | 13 / 16 |
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 13 to 16 years each.
See what Western Isl 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.