Sundsvall weather by month
Measured at Sundsvall-Timra Arpt
Averages and records for each calendar month at Sundsvall-Timra Arpt, Sweden, from 1955 to 2026. The warmest month is July, averaging 20.9°C; the coolest is January at −3.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −3.3°C | −11.5°C | 11.0°C28 January 1992 | −34.2°C11 January 1987 | 70 / 71 |
| February | −2.0°C | −11.4°C | 13.9°C23 February 1990 | −34.6°C5 February 1966 | 70 / 70 |
| March | 2.6°C | −6.8°C | 15.2°C28 March 2002 | −27.1°C7 March 1981 | 70 / 71 |
| April | 7.4°C | −2.0°C | 21.9°C25 April 1993 | −20.0°C1 April 1963 | 69 / 71 |
| May | 13.6°C | 2.6°C | 28.1°C29 May 2018 | −7.0°C4 May 1981 | 70 / 70 |
| June | 18.7°C | 8.0°C | 31.0°C7 June 1979 | −1.1°C2 June 2017 | 70 / 71 |
| July | 20.9°C | 11.0°C | 33.0°C26 July 1994 | 2.9°C2 July 1979 | 71 / 71 |
| August | 19.4°C | 9.9°C | 31.3°C8 August 1975 | −0.5°C27 August 1961 | 71 / 71 |
| September | 14.5°C | 5.8°C | 27.2°C3 September 1999 | −6.5°C30 September 1976 | 70 / 70 |
| October | 8.3°C | 0.9°C | 21.5°C14 October 2018 | −15.2°C31 October 1992 | 70 / 70 |
| November | 1.8°C | −4.1°C | 14.0°C12 November 1999 | −22.1°C30 November 2010 | 70 / 70 |
| December | −1.8°C | −9.0°C | 10.5°C24 December 2006 | −36.6°C31 December 1978 | 71 / 71 |
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 69 to 71 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.