Eldersburg climate — normals and trends
Eldersburg (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.3 °C and it receives 1,054 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 (24.4 °C on average) and the coldest is January (0.0 °C). Rainfall peaks in May.
Eldersburg averages 85 frost days, 39 hot days (≥ 30 °C) and 117 rainy days per year.
Eldersburg has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 94 to 76 per year over the period.
The hottest day of the period reached 38.8 °C (on 31 July 1954) and the coldest -25.8 °C (on 29 January 1963).
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
EldersburgMaryland
- coords
- 39.40°, -76.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.3°C
Average daily high
17.2°C
Average daily low
7.9°C
Annual rainfall
1,054mm
Sunshine / day
8.9h
Mean relative humidity
67%
Average peak wind
16.2km/h
Seasonal range
24.4°C
Frost days (< 0 °C)
85 d/yr
Hot days (≥ 30 °C)
39 d/yr
Rainy days (≥ 1 mm)
117 d/yr
Annual snowfall
57.5 cm
Average feels-like high
15.8 °C
Average feels-like low
5.6 °C
Average peak gust
38.3 km/h
Tropical nights (≥ 20 °C)
41 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.40 · 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
38.8 °C
31 July 1954
Coldest day
-25.8 °C
29 January 1963
Wettest day
134 mm
14 September 1966
Windiest day
47.6 km/h
3 April 1975
Strongest gust
123.5 km/h
11 February 1981
Hottest feels-like
44.2 °C
22 July 2011
Coldest feels-like
-31.1 °C
19 January 1994
Snowiest day
43.0 cm
20 March 1958
Sunniest day
14.3 h
30 June 2010
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 | 2.0 °C | -1.9 °C | 41 mm | -38 mm |
| Feb | 5.8 °C | +0.1 °C | 63 mm | -12 mm |
| Mar | 15.4 °C | +4.6 °C | 60 mm | -34 mm |
| Apr | 18.8 °C | +1.7 °C | 69 mm | -22 mm |
| May | 22.1 °C | -0.4 °C | 197 mm | +98 mm |
| Jun | 28.2 °C | +1.0 °C | 124 mm | +34 mm |
| Jul | 30.6 °C | +1.1 °C | 187 mm | +91 mm |
| Aug | 26.5 °C | -1.9 °C | 32 mm | -57 mm |
| Sep | 25.4 °C | +0.8 °C | 80 mm | -12 mm |
| Oct | 18.7 °C | +0.2 °C | 71 mm | -8 mm |
| Nov | 12.2 °C | +0.3 °C | 42 mm | -42 mm |
| Dec | 4.4 °C | -1.6 °C | 60 mm | -25 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 Eldersburg?
Eldersburg has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.3 °C and it receives 1,054 mm of precipitation per year.
What is the hottest day ever recorded in Eldersburg?
The hottest day measured in Eldersburg between 1940 and 2025 was 31 July 1954, reaching 38.8 °C.
What is the coldest day in Eldersburg?
The coldest day measured in Eldersburg between 1940 and 2025 was 29 January 1963, at -25.8 °C.
Does it snow in Eldersburg?
Yes. Eldersburg gets on average 57.5 cm of snow per year and has around 85 frost days.
Has the climate of Eldersburg warmed?
Yes: Eldersburg warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Eldersburg?
The wettest day measured in Eldersburg between 1940 and 2025 was 14 September 1966, with 134 mm of rain in 24 hours.
What was the windiest day in Eldersburg?
The windiest day measured in Eldersburg between 1940 and 2025 was 3 April 1975, with winds reaching 47.6 km/h.
What is the warmest month in Eldersburg?
The warmest month in Eldersburg is July (24.4 °C on average); the coldest is January (0.0 °C).
How much does it rain in Eldersburg?
Eldersburg receives on average 1,054 mm of precipitation per year, spread over about 117 rainy days.
Is it sunny in Eldersburg?
Eldersburg gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Eldersburg?
The heaviest 24-hour snowfall measured in Eldersburg between 1940 and 2025 was 20 March 1958, with 43.0 cm.
Are there tropical nights in Eldersburg?
Yes: Eldersburg has on average 41 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Eldersburg?
In Eldersburg, between 1940 and 2025, the highest apparent temperature reached 44.2 °C on 22 July 2011, and the lowest was -31.1 °C on 19 January 1994.
Compare Eldersburg with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Eldersburg