Alta Arpt climate by month
Averages and records for each calendar month at Alta Arpt, Norway, from 1963 to 2026. The warmest month is July, averaging 17.5°C; the coolest is January at −4.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −4.2°C | −11.4°C | 9.9°C24 January 1992 | −32.1°C28 January 1999 | 63 / 63 |
| February | −3.9°C | −10.9°C | 10.7°C7 February 2025 | −30.3°C2 February 1966 | 63 / 63 |
| March | −0.7°C | −7.8°C | 10.8°C22 March 2025 | −25.5°C1 March 1987 | 63 / 63 |
| April | 3.3°C | −3.3°C | 15.6°C20 April 2003 | −21.5°C11 April 1966 | 63 / 63 |
| May | 8.4°C | 2.1°C | 28.0°C30 May 2024 | −11.4°C1 May 1971 | 63 / 63 |
| June | 14.0°C | 7.3°C | 31.9°C29 June 2022 | −0.1°C7 June 1982 | 63 / 63 |
| July | 17.5°C | 10.7°C | 33.0°C18 July 2018 | 3.7°C30 July 1987 | 63 / 63 |
| August | 15.8°C | 9.2°C | 31.8°C1 August 2018 | −0.2°C26 August 1987 | 63 / 63 |
| September | 10.9°C | 5.1°C | 24.4°C5 September 2025 | −7.4°C27 September 1986 | 61 / 62 |
| October | 4.5°C | −0.5°C | 17.4°C11 October 2005 | −19.4°C27 October 1968 | 62 / 62 |
| November | −0.2°C | −6.1°C | 14.7°C8 November 2024 | −25.8°C22 November 1980 | 62 / 62 |
| December | −2.5°C | −9.3°C | 10.8°C16 December 1997 | −27.7°C29 December 1978 | 63 / 63 |
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 61 to 63 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.