Thule climate by month
Averages and records for each calendar month at Thule, Greenland, from 1951 to 2026. The warmest month is July, averaging 8.2°C; the coolest is March at −21.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −19.0°C | −27.9°C | 3.5°C2 January 2026 | −41.8°C4 January 2020 | 38 / 53 |
| February | −20.3°C | −28.9°C | 6.1°C24 February 1965 | −41.1°C6 February 1955 | 33 / 53 |
| March | −21.0°C | −29.0°C | 6.2°C18 March 2013 | −42.2°C14 March 1961 | 39 / 52 |
| April | −12.8°C | −21.9°C | 9.7°C26 April 2021 | −37.8°C8 April 1964 | 36 / 53 |
| May | −3.1°C | −9.4°C | 13.4°C28 May 2021 | −28.3°C4 May 1974 | 39 / 52 |
| June | 4.7°C | −0.4°C | 17.8°C29 June 2019 | −16.1°C4 June 1975 | 35 / 53 |
| July | 8.2°C | 2.9°C | 19.2°C11 July 2015 | −3.3°C19 July 1964 | 36 / 50 |
| August | 7.1°C | 2.2°C | 17.2°C1 August 2019 | −5.1°C27 August 2003 | 37 / 50 |
| September | 0.8°C | −4.7°C | 15.3°C1 September 2019 | −26.1°C24 September 1973 | 34 / 53 |
| October | −6.5°C | −13.4°C | 7.4°C15 October 2002 | −31.1°C31 October 1964 | 38 / 53 |
| November | −13.3°C | −21.2°C | 5.9°C22 November 2010 | −35.6°C22 November 1973 | 34 / 52 |
| December | −17.8°C | −26.1°C | 6.0°C21 December 2021 | −39.4°C29 December 1974 | 40 / 52 |
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 33 to 40 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.