State College climate — normals and trends
State College (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.7 °C and it receives 1,030 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 (22.1 °C on average) and the coldest is January (-3.2 °C). Rainfall peaks in May.
State College averages 119 frost days, 17 hot days (≥ 30 °C) and 126 rainy days per year.
State College has warmed by +2.1 °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 133 to 105 per year over the period.
The hottest day of the period reached 37.7 °C (on 22 July 2011) and the coldest -29.8 °C (on 8 January 1942).
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
State CollegePennsylvania
- coords
- 40.79°, -77.86°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.7°C
Average daily high
14.6°C
Average daily low
4.9°C
Annual rainfall
1,030mm
Sunshine / day
8.5h
Mean relative humidity
71%
Average peak wind
15.1km/h
Seasonal range
25.3°C
Frost days (< 0 °C)
119 d/yr
Hot days (≥ 30 °C)
17 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
92.7 cm
Average feels-like high
12.9 °C
Average feels-like low
2.4 °C
Average peak gust
38.4 km/h
Tropical nights (≥ 20 °C)
12 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.46 · 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
37.7 °C
22 July 2011
Coldest day
-29.8 °C
8 January 1942
Wettest day
157 mm
22 June 1972
Windiest day
45.6 km/h
3 April 1975
Strongest gust
137.5 km/h
25 November 1950
Hottest feels-like
41.0 °C
26 August 1948
Coldest feels-like
-35.4 °C
8 January 1942
Snowiest day
44.9 cm
13 March 1993
Sunniest day
14.6 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 | -0.7 °C | -1.3 °C | 25 mm | -50 mm |
| Feb | 2.9 °C | +0.6 °C | 78 mm | +3 mm |
| Mar | 12.6 °C | +5.0 °C | 57 mm | -39 mm |
| Apr | 16.5 °C | +1.9 °C | 96 mm | -0 mm |
| May | 19.4 °C | -0.8 °C | 192 mm | +85 mm |
| Jun | 26.0 °C | +1.1 °C | 129 mm | +40 mm |
| Jul | 29.3 °C | +1.9 °C | 68 mm | -10 mm |
| Aug | 26.5 °C | -0.1 °C | 32 mm | -46 mm |
| Sep | 25.4 °C | +2.8 °C | 43 mm | -44 mm |
| Oct | 17.3 °C | +1.2 °C | 92 mm | +12 mm |
| Nov | 9.4 °C | +0.4 °C | 46 mm | -40 mm |
| Dec | 1.9 °C | -1.0 °C | 71 mm | -11 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 State College?
State College has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.7 °C and it receives 1,030 mm of precipitation per year.
What is the hottest day ever recorded in State College?
The hottest day measured in State College between 1940 and 2025 was 22 July 2011, reaching 37.7 °C.
What is the coldest day in State College?
The coldest day measured in State College between 1940 and 2025 was 8 January 1942, at -29.8 °C.
Does it snow in State College?
Yes. State College gets on average 92.7 cm of snow per year and has around 119 frost days.
Has the climate of State College warmed?
Yes: State College warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in State College?
The wettest day measured in State College between 1940 and 2025 was 22 June 1972, with 157 mm of rain in 24 hours.
What was the windiest day in State College?
The windiest day measured in State College between 1940 and 2025 was 3 April 1975, with winds reaching 45.6 km/h.
What is the warmest month in State College?
The warmest month in State College is July (22.1 °C on average); the coldest is January (-3.2 °C).
How much does it rain in State College?
State College receives on average 1,030 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in State College?
State College gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in State College?
The heaviest 24-hour snowfall measured in State College between 1940 and 2025 was 13 March 1993, with 44.9 cm.
Are there tropical nights in State College?
Yes: State College has on average 12 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in State College?
In State College, between 1940 and 2025, the highest apparent temperature reached 41.0 °C on 26 August 1948, and the lowest was -35.4 °C on 8 January 1942.
Compare State College with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around State College