LOGAN INTERNATIONAL AIRPORT weather by month
Averages and records for each calendar month at LOGAN INTERNATIONAL AIRPORT, United States, from 1948 to 2026. The warmest month is July, averaging 30.6°C; the coolest is January at 1.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 1.0°C | −9.2°C | 20.0°C11 January 1953 | −34.4°C12 January 1997 | 79 / 79 |
| February | 3.5°C | −7.3°C | 22.2°C10 February 1961 | −33.3°C2 February 1989 | 79 / 79 |
| March | 8.2°C | −3.6°C | 28.3°C20 March 2026 | −29.3°C2 March 2014 | 79 / 79 |
| April | 13.8°C | 1.2°C | 32.2°C20 April 1980 | −16.1°C2 April 2002 | 79 / 79 |
| May | 19.5°C | 6.4°C | 35.0°C30 May 1984 | −10.0°C2 May 1954 | 79 / 79 |
| June | 25.1°C | 11.1°C | 40.6°C29 June 1984 | 0.0°C7 June 1950 | 79 / 79 |
| July | 30.6°C | 14.9°C | 43.9°C12 July 2026 | 5.0°C4 July 1972 | 79 / 79 |
| August | 29.6°C | 14.0°C | 40.6°C5 August 1961 | 1.7°C25 August 1992 | 79 / 79 |
| September | 23.0°C | 8.7°C | 39.4°C1 September 1983 | −5.6°C24 September 1984 | 78 / 79 |
| October | 15.6°C | 3.0°C | 32.8°C1 October 2011 | −21.7°C30 October 1991 | 78 / 78 |
| November | 7.5°C | −3.1°C | 25.0°C4 November 1983 | −30.0°C16 November 1959 | 78 / 78 |
| December | 2.2°C | −7.5°C | 20.6°C9 December 1957 | −35.6°C24 December 1983 | 78 / 78 |
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 78 to 79 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.