Shepherd Bay, N. W. T. climate by month
Averages and records for each calendar month at Shepherd Bay, N. W. T., Canada, from 1957 to 2023. The warmest month is July, averaging 12.3°C; the coolest is February at −31.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −29.6°C | −38.9°C | −3.3°C13 January 1977 | −54.4°C11 January 1966 | 38 / 62 |
| February | −31.6°C | −39.8°C | −5.5°C7 February 1980 | −57.8°C13 February 1973 | 40 / 62 |
| March | −26.3°C | −36.1°C | −4.8°C30 March 2000 | −55.6°C18 March 1965 | 42 / 65 |
| April | −16.8°C | −27.4°C | 2.2°C30 April 1964 | −46.7°C2 April 1974 | 57 / 64 |
| May | −6.0°C | −14.1°C | 6.7°C27 May 1966 | −31.7°C7 May 1970 | 61 / 63 |
| June | 4.0°C | −1.8°C | 23.2°C30 June 2019 | −18.9°C1 June 1974 | 60 / 64 |
| July | 12.3°C | 4.0°C | 29.0°C13 July 2022 | −6.7°C9 July 1958 | 64 / 64 |
| August | 9.7°C | 2.8°C | 26.5°C6 August 1991 | −5.6°C31 August 1961 | 60 / 63 |
| September | 2.0°C | −2.6°C | 15.4°C16 September 1996 | −16.1°C29 September 1965 | 61 / 63 |
| October | −7.1°C | −13.9°C | 6.0°C2 October 2021 | −36.1°C25 October 1965 | 62 / 63 |
| November | −18.4°C | −27.2°C | 0.0°C3 November 1984 | −47.2°C28 November 1972 | 53 / 62 |
| December | −25.6°C | −34.5°C | −1.4°C20 December 2010 | −50.6°C27 December 1957 | 43 / 64 |
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 38 to 64 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.