Annapolis climate — normals and trends
Annapolis (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.6 °C and it receives 1,140 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (25.4 °C on average) and the coldest is January (1.8 °C). Rainfall peaks in March.
Annapolis averages 49 frost days, 20 hot days (≥ 30 °C) and 118 rainy days per year.
Annapolis has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 56 to 42 per year over the period.
The hottest day of the period reached 36.3 °C (on 7 July 2012) and the coldest -19.9 °C (on 17 January 1982).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
AnnapolisMaryland
- coords
- 38.98°, -76.49°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.6°C
Average daily high
16.9°C
Average daily low
10.6°C
Annual rainfall
1,140mm
Sunshine / day
9.0h
Mean relative humidity
70%
Average peak wind
20.3km/h
Seasonal range
23.6°C
Frost days (< 0 °C)
49 d/yr
Hot days (≥ 30 °C)
20 d/yr
Rainy days (≥ 1 mm)
118 d/yr
Annual snowfall
38.4 cm
Average feels-like high
15.9 °C
Average feels-like low
8.2 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
79 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.36 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
36.3 °C
7 July 2012
Coldest day
-19.9 °C
17 January 1982
Wettest day
140 mm
16 September 1999
Windiest day
59.4 km/h
15 October 1954
Strongest gust
117.4 km/h
9 January 2024
Hottest feels-like
42.8 °C
22 July 2011
Coldest feels-like
-27.8 °C
17 January 1982
Snowiest day
33.9 cm
19 December 2009
Sunniest day
14.1 h
5 July 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 2.7 °C | -2.0 °C | 52 mm | -39 mm |
| Feb | 6.1 °C | +0.1 °C | 104 mm | +20 mm |
| Mar | 13.8 °C | +3.7 °C | 74 mm | -34 mm |
| Apr | 18.1 °C | +2.3 °C | 93 mm | -1 mm |
| May | 22.1 °C | +1.2 °C | 188 mm | +90 mm |
| Jun | 27.4 °C | +1.6 °C | 124 mm | +39 mm |
| Jul | 30.0 °C | +1.4 °C | 290 mm | +187 mm |
| Aug | 26.4 °C | -1.5 °C | 26 mm | -74 mm |
| Sep | 24.6 °C | +0.1 °C | 105 mm | +6 mm |
| Oct | 18.7 °C | 0.0 °C | 85 mm | -5 mm |
| Nov | 12.9 °C | +0.2 °C | 42 mm | -49 mm |
| Dec | 5.6 °C | -1.6 °C | 60 mm | -38 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Annapolis?
Annapolis has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.6 °C and it receives 1,140 mm of precipitation per year.
What is the hottest day ever recorded in Annapolis?
The hottest day measured in Annapolis between 1940 and 2025 was 7 July 2012, reaching 36.3 °C.
What is the coldest day in Annapolis?
The coldest day measured in Annapolis between 1940 and 2025 was 17 January 1982, at -19.9 °C.
Does it snow in Annapolis?
Yes. Annapolis gets on average 38.4 cm of snow per year and has around 49 frost days.
Has the climate of Annapolis warmed?
Yes: Annapolis warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Annapolis?
The wettest day measured in Annapolis between 1940 and 2025 was 16 September 1999, with 140 mm of rain in 24 hours.
What was the windiest day in Annapolis?
The windiest day measured in Annapolis between 1940 and 2025 was 15 October 1954, with winds reaching 59.4 km/h.
What is the warmest month in Annapolis?
The warmest month in Annapolis is July (25.4 °C on average); the coldest is January (1.8 °C).
How much does it rain in Annapolis?
Annapolis receives on average 1,140 mm of precipitation per year, spread over about 118 rainy days.
Is it sunny in Annapolis?
Annapolis gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Annapolis?
The heaviest 24-hour snowfall measured in Annapolis between 1940 and 2025 was 19 December 2009, with 33.9 cm.
Are there tropical nights in Annapolis?
Yes: Annapolis has on average 79 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Annapolis?
In Annapolis, between 1940 and 2025, the highest apparent temperature reached 42.8 °C on 22 July 2011, and the lowest was -27.8 °C on 17 January 1982.
Compare Annapolis with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Annapolis