Crofton climate — normals and trends
Crofton (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.6 °C and it receives 1,085 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 (25.5 °C on average) and the coldest is January (1.5 °C). Rainfall peaks in July.
Crofton averages 65 frost days, 45 hot days (≥ 30 °C) and 117 rainy days per year.
Crofton has warmed by +1.6 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 73 to 57 per year over the period.
The hottest day of the period reached 39.9 °C (on 7 July 2012) and the coldest -21.7 °C (on 22 January 1984).
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
CroftonMaryland
- coords
- 39.00°, -76.69°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.6°C
Average daily high
18.1°C
Average daily low
9.6°C
Annual rainfall
1,085mm
Sunshine / day
9.0h
Mean relative humidity
68%
Average peak wind
16.5km/h
Seasonal range
24.0°C
Frost days (< 0 °C)
65 d/yr
Hot days (≥ 30 °C)
45 d/yr
Rainy days (≥ 1 mm)
117 d/yr
Annual snowfall
41.8 cm
Average feels-like high
17.2 °C
Average feels-like low
7.5 °C
Average peak gust
37.7 km/h
Tropical nights (≥ 20 °C)
64 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.38 · 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
39.9 °C
7 July 2012
Coldest day
-21.7 °C
22 January 1984
Wettest day
145 mm
16 September 1999
Windiest day
51.9 km/h
1 December 1974
Strongest gust
121.0 km/h
9 January 2024
Hottest feels-like
45.7 °C
22 July 2011
Coldest feels-like
-28.3 °C
19 January 1994
Snowiest day
38.2 cm
20 March 1958
Sunniest day
14.2 h
4 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 | 3.3 °C | -2.0 °C | 52 mm | -28 mm |
| Feb | 7.3 °C | +0.3 °C | 87 mm | +11 mm |
| Mar | 16.1 °C | +4.2 °C | 62 mm | -35 mm |
| Apr | 19.9 °C | +1.9 °C | 83 mm | -5 mm |
| May | 23.1 °C | 0.0 °C | 204 mm | +105 mm |
| Jun | 28.9 °C | +1.1 °C | 143 mm | +51 mm |
| Jul | 30.8 °C | +0.7 °C | 319 mm | +207 mm |
| Aug | 26.8 °C | -2.1 °C | 25 mm | -76 mm |
| Sep | 25.5 °C | +0.1 °C | 97 mm | +2 mm |
| Oct | 19.4 °C | 0.0 °C | 66 mm | -15 mm |
| Nov | 13.6 °C | +0.4 °C | 37 mm | -45 mm |
| Dec | 6.0 °C | -1.4 °C | 50 mm | -35 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 Crofton?
Crofton has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.6 °C and it receives 1,085 mm of precipitation per year.
What is the hottest day ever recorded in Crofton?
The hottest day measured in Crofton between 1940 and 2025 was 7 July 2012, reaching 39.9 °C.
What is the coldest day in Crofton?
The coldest day measured in Crofton between 1940 and 2025 was 22 January 1984, at -21.7 °C.
Does it snow in Crofton?
Yes. Crofton gets on average 41.8 cm of snow per year and has around 65 frost days.
Has the climate of Crofton warmed?
Yes: Crofton warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Crofton?
The wettest day measured in Crofton between 1940 and 2025 was 16 September 1999, with 145 mm of rain in 24 hours.
What was the windiest day in Crofton?
The windiest day measured in Crofton between 1940 and 2025 was 1 December 1974, with winds reaching 51.9 km/h.
What is the warmest month in Crofton?
The warmest month in Crofton is July (25.5 °C on average); the coldest is January (1.5 °C).
How much does it rain in Crofton?
Crofton receives on average 1,085 mm of precipitation per year, spread over about 117 rainy days.
Is it sunny in Crofton?
Crofton 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 Crofton?
The heaviest 24-hour snowfall measured in Crofton between 1940 and 2025 was 20 March 1958, with 38.2 cm.
Are there tropical nights in Crofton?
Yes: Crofton has on average 64 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Crofton?
In Crofton, between 1940 and 2025, the highest apparent temperature reached 45.7 °C on 22 July 2011, and the lowest was -28.3 °C on 19 January 1994.
Compare Crofton with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Crofton