Reading climate — normals and trends
Reading (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.7 °C and it receives 1,084 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 (24.1 °C on average) and the coldest is January (-1.0 °C). Rainfall peaks in July.
Reading averages 96 frost days, 36 hot days (≥ 30 °C) and 118 rainy days per year.
Reading has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 107 to 85 per year over the period.
The hottest day of the period reached 40.4 °C (on 22 July 2011) and the coldest -27.3 °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
ReadingPennsylvania
- coords
- 40.34°, -75.93°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.7°C
Average daily high
16.6°C
Average daily low
7.0°C
Annual rainfall
1,084mm
Sunshine / day
8.7h
Mean relative humidity
68%
Average peak wind
15.5km/h
Seasonal range
25.1°C
Frost days (< 0 °C)
96 d/yr
Hot days (≥ 30 °C)
36 d/yr
Rainy days (≥ 1 mm)
118 d/yr
Annual snowfall
65.6 cm
Average feels-like high
15.2 °C
Average feels-like low
4.7 °C
Average peak gust
36.8 km/h
Tropical nights (≥ 20 °C)
33 d/yr
Solar radiation
14.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.48 · 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
40.4 °C
22 July 2011
Coldest day
-27.3 °C
22 January 1984
Wettest day
148 mm
8 October 2005
Windiest day
50.2 km/h
15 October 1954
Strongest gust
123.5 km/h
15 October 1954
Hottest feels-like
44.7 °C
15 July 1995
Coldest feels-like
-32.6 °C
22 January 1984
Snowiest day
36.7 cm
23 January 2016
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 | 1.6 °C | -1.2 °C | 28 mm | -52 mm |
| Feb | 5.0 °C | +0.4 °C | 69 mm | -8 mm |
| Mar | 14.9 °C | +5.2 °C | 73 mm | -24 mm |
| Apr | 18.0 °C | +1.7 °C | 89 mm | -8 mm |
| May | 21.6 °C | -0.5 °C | 172 mm | +72 mm |
| Jun | 28.0 °C | +1.0 °C | 99 mm | +7 mm |
| Jul | 31.0 °C | +1.6 °C | 156 mm | +55 mm |
| Aug | 27.8 °C | -0.5 °C | 15 mm | -77 mm |
| Sep | 26.4 °C | +2.0 °C | 73 mm | -19 mm |
| Oct | 18.8 °C | +0.8 °C | 76 mm | -6 mm |
| Nov | 11.7 °C | +0.4 °C | 44 mm | -43 mm |
| Dec | 3.4 °C | -1.8 °C | 62 mm | -28 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 Reading?
Reading has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.7 °C and it receives 1,084 mm of precipitation per year.
What is the hottest day ever recorded in Reading?
The hottest day measured in Reading between 1940 and 2025 was 22 July 2011, reaching 40.4 °C.
What is the coldest day in Reading?
The coldest day measured in Reading between 1940 and 2025 was 22 January 1984, at -27.3 °C.
Does it snow in Reading?
Yes. Reading gets on average 65.6 cm of snow per year and has around 96 frost days.
Has the climate of Reading warmed?
Yes: Reading warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Reading?
The wettest day measured in Reading between 1940 and 2025 was 8 October 2005, with 148 mm of rain in 24 hours.
What was the windiest day in Reading?
The windiest day measured in Reading between 1940 and 2025 was 15 October 1954, with winds reaching 50.2 km/h.
What is the warmest month in Reading?
The warmest month in Reading is July (24.1 °C on average); the coldest is January (-1.0 °C).
How much does it rain in Reading?
Reading receives on average 1,084 mm of precipitation per year, spread over about 118 rainy days.
Is it sunny in Reading?
Reading gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Reading?
The heaviest 24-hour snowfall measured in Reading between 1940 and 2025 was 23 January 2016, with 36.7 cm.
Are there tropical nights in Reading?
Yes: Reading has on average 33 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Reading?
In Reading, between 1940 and 2025, the highest apparent temperature reached 44.7 °C on 15 July 1995, and the lowest was -32.6 °C on 22 January 1984.
Compare Reading with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Reading