Shelton climate — normals and trends
Shelton (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.8 °C and it receives 1,303 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 (22.4 °C on average) and the coldest is January (-0.6 °C). Rainfall peaks in December.
Shelton averages 70 frost days, 2 hot days (≥ 30 °C) and 123 rainy days per year.
Shelton 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 80 to 60 per year over the period.
The hottest day of the period reached 33.9 °C (on 15 July 1995) and the coldest -19.7 °C (on 14 February 2016).
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
SheltonConnecticut
- coords
- 41.32°, -73.09°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.8°C
Average daily high
13.7°C
Average daily low
8.2°C
Annual rainfall
1,303mm
Sunshine / day
8.9h
Mean relative humidity
73%
Average peak wind
23.3km/h
Seasonal range
23.0°C
Frost days (< 0 °C)
70 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
123 d/yr
Annual snowfall
71.7 cm
Average feels-like high
11.6 °C
Average feels-like low
5.0 °C
Average peak gust
37.6 km/h
Tropical nights (≥ 20 °C)
37 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.38 · 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
33.9 °C
15 July 1995
Coldest day
-19.7 °C
14 February 2016
Wettest day
159 mm
14 October 2005
Windiest day
76.3 km/h
25 November 1950
Strongest gust
142.6 km/h
25 November 1950
Hottest feels-like
38.0 °C
2 August 1975
Coldest feels-like
-28.2 °C
30 December 1962
Snowiest day
31.0 cm
16 February 1958
Sunniest day
14.4 h
12 June 2004
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 | 1.4 °C | -0.8 °C | 43 mm | -68 mm |
| Feb | 2.6 °C | 0.0 °C | 112 mm | +10 mm |
| Mar | 8.6 °C | +2.7 °C | 133 mm | +7 mm |
| Apr | 12.3 °C | +1.2 °C | 118 mm | +1 mm |
| May | 16.5 °C | +0.1 °C | 198 mm | +90 mm |
| Jun | 22.6 °C | +0.8 °C | 57 mm | -31 mm |
| Jul | 26.7 °C | +1.4 °C | 84 mm | -1 mm |
| Aug | 25.0 °C | +0.1 °C | 49 mm | -52 mm |
| Sep | 22.7 °C | +1.0 °C | 71 mm | -32 mm |
| Oct | 16.8 °C | +0.4 °C | 173 mm | +59 mm |
| Nov | 10.4 °C | -0.3 °C | 69 mm | -51 mm |
| Dec | 3.6 °C | -1.5 °C | 88 mm | -40 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 Shelton?
Shelton has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.8 °C and it receives 1,303 mm of precipitation per year.
What is the hottest day ever recorded in Shelton?
The hottest day measured in Shelton between 1940 and 2025 was 15 July 1995, reaching 33.9 °C.
What is the coldest day in Shelton?
The coldest day measured in Shelton between 1940 and 2025 was 14 February 2016, at -19.7 °C.
Does it snow in Shelton?
Yes. Shelton gets on average 71.7 cm of snow per year and has around 70 frost days.
Has the climate of Shelton warmed?
Yes: Shelton warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Shelton?
The wettest day measured in Shelton between 1940 and 2025 was 14 October 2005, with 159 mm of rain in 24 hours.
What was the windiest day in Shelton?
The windiest day measured in Shelton between 1940 and 2025 was 25 November 1950, with winds reaching 76.3 km/h.
What is the warmest month in Shelton?
The warmest month in Shelton is July (22.4 °C on average); the coldest is January (-0.6 °C).
How much does it rain in Shelton?
Shelton receives on average 1,303 mm of precipitation per year, spread over about 123 rainy days.
Is it sunny in Shelton?
Shelton 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 Shelton?
The heaviest 24-hour snowfall measured in Shelton between 1940 and 2025 was 16 February 1958, with 31.0 cm.
Are there tropical nights in Shelton?
Yes: Shelton has on average 37 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Shelton?
In Shelton, between 1940 and 2025, the highest apparent temperature reached 38.0 °C on 2 August 1975, and the lowest was -28.2 °C on 30 December 1962.
Compare Shelton with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Shelton