Annapolis weather by month
Measured at Stevensville/Bay Bridge Arpt
Averages and records for each calendar month at Stevensville/Bay Bridge Arpt, United States, from 1926 to 2026. The warmest month is July, averaging 31.0°C; the coolest is January at 5.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 5.9°C | −2.1°C | 23.9°C15 January 1932 | −18.3°C18 January 1957 | 37 / 39 |
| February | 7.4°C | −1.6°C | 28.3°C25 February 1930 | −22.8°C9 February 1934 | 38 / 39 |
| March | 11.7°C | 2.0°C | 30.0°C25 March 1939 | −13.3°C1 March 1934 | 39 / 40 |
| April | 18.1°C | 7.3°C | 33.3°C26 April 1960 | −2.2°C11 April 1938 | 40 / 40 |
| May | 23.5°C | 13.2°C | 35.6°C29 May 1941 | 2.8°C1 May 1937 | 40 / 40 |
| June | 28.4°C | 18.2°C | 37.8°C30 June 2012 | 4.4°C1 June 1938 | 37 / 39 |
| July | 31.0°C | 21.4°C | 39.4°C5 July 2026 | 8.9°C31 July 1956 | 38 / 39 |
| August | 29.6°C | 20.3°C | 37.2°C31 August 1953 | 8.9°C31 August 1934 | 38 / 39 |
| September | 26.4°C | 16.9°C | 36.1°C12 September 1931 | 4.4°C30 September 1932 | 38 / 39 |
| October | 20.3°C | 10.7°C | 36.7°C6 October 1941 | −3.9°C28 October 1936 | 37 / 39 |
| November | 13.7°C | 4.6°C | 27.8°C2 November 1929 | −11.1°C30 November 1929 | 35 / 39 |
| December | 8.1°C | 0.2°C | 21.7°C7 December 1956 | −13.9°C26 December 1935 | 36 / 38 |
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 35 to 40 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.