St James Muni climate by month
Averages and records for each calendar month at St James Muni, United States, from 1958 to 2026. The warmest month is July, averaging 28.7°C; the coolest is January at −4.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −4.9°C | −15.1°C | 17.8°C24 January 1981 | −34.4°C21 January 1970 | 64 / 68 |
| February | −2.1°C | −12.5°C | 19.4°C22 February 2017 | −34.4°C2 February 1996 | 63 / 68 |
| March | 4.7°C | −5.5°C | 29.4°C29 March 2025 | −32.2°C1 March 1962 | 63 / 67 |
| April | 13.7°C | 1.6°C | 33.9°C21 April 1980 | −14.4°C5 April 1995 | 63 / 67 |
| May | 21.4°C | 8.7°C | 38.9°C15 May 2013 | −7.2°C1 May 1961 | 64 / 67 |
| June | 26.8°C | 14.4°C | 40.0°C21 June 1988 | 2.2°C11 June 1995 | 63 / 69 |
| July | 28.7°C | 16.5°C | 40.6°C31 July 1988 | 4.4°C1 July 1995 | 67 / 69 |
| August | 27.3°C | 15.1°C | 38.3°C15 August 1988 | 2.2°C21 August 2004 | 63 / 65 |
| September | 23.4°C | 10.1°C | 36.7°C7 September 1976 | −3.9°C22 September 1974 | 60 / 66 |
| October | 16.2°C | 3.4°C | 33.3°C5 October 1963 | −12.2°C28 October 2020 | 61 / 66 |
| November | 6.2°C | −4.0°C | 27.8°C9 November 2006 | −25.0°C26 November 1977 | 62 / 67 |
| December | −2.0°C | −11.5°C | 20.0°C2 December 1998 | −32.8°C19 December 1983 | 61 / 67 |
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 60 to 67 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.