Pekin climate — normals and trends
Pekin (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.1 °C and it receives 953 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 (24.3 °C on average) and the coldest is January (-3.9 °C). Rainfall peaks in May.
Pekin averages 108 frost days, 37 hot days (≥ 30 °C) and 111 rainy days per year.
Pekin has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 120 to 96 per year over the period.
The hottest day of the period reached 39.8 °C (on 7 July 2012) and the coldest -30.4 °C (on 17 January 1982).
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
PekinIllinois
- coords
- 40.57°, -89.64°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.1°C
Average daily high
16.0°C
Average daily low
6.4°C
Annual rainfall
953mm
Sunshine / day
8.9h
Mean relative humidity
70%
Average peak wind
19.0km/h
Seasonal range
28.2°C
Frost days (< 0 °C)
108 d/yr
Hot days (≥ 30 °C)
37 d/yr
Rainy days (≥ 1 mm)
111 d/yr
Annual snowfall
53.1 cm
Average feels-like high
14.3 °C
Average feels-like low
3.8 °C
Average peak gust
37.8 km/h
Tropical nights (≥ 20 °C)
40 d/yr
Solar radiation
15.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.34 · 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
39.8 °C
7 July 2012
Coldest day
-30.4 °C
17 January 1982
Wettest day
128 mm
5 August 2023
Windiest day
53.1 km/h
31 October 1979
Strongest gust
109.1 km/h
10 November 1998
Hottest feels-like
44.6 °C
13 July 1995
Coldest feels-like
-37.7 °C
20 January 1985
Snowiest day
21.5 cm
1 February 2011
Sunniest day
14.1 h
17 June 2023
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 | -0.2 °C | -0.4 °C | 22 mm | -28 mm |
| Feb | 3.2 °C | +0.4 °C | 15 mm | -36 mm |
| Mar | 14.9 °C | +5.5 °C | 90 mm | +6 mm |
| Apr | 18.0 °C | +1.4 °C | 108 mm | +2 mm |
| May | 22.9 °C | +0.6 °C | 88 mm | -22 mm |
| Jun | 29.2 °C | +1.9 °C | 92 mm | -10 mm |
| Jul | 30.6 °C | +1.4 °C | 153 mm | +67 mm |
| Aug | 28.1 °C | -0.3 °C | 57 mm | -22 mm |
| Sep | 28.1 °C | +3.2 °C | 23 mm | -57 mm |
| Oct | 21.5 °C | +3.2 °C | 52 mm | -24 mm |
| Nov | 11.4 °C | +1.6 °C | 58 mm | -13 mm |
| Dec | 2.9 °C | 0.0 °C | 52 mm | -7 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 Pekin?
Pekin has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.1 °C and it receives 953 mm of precipitation per year.
What is the hottest day ever recorded in Pekin?
The hottest day measured in Pekin between 1940 and 2025 was 7 July 2012, reaching 39.8 °C.
What is the coldest day in Pekin?
The coldest day measured in Pekin between 1940 and 2025 was 17 January 1982, at -30.4 °C.
Does it snow in Pekin?
Yes. Pekin gets on average 53.1 cm of snow per year and has around 108 frost days.
Has the climate of Pekin warmed?
Yes: Pekin warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Pekin?
The wettest day measured in Pekin between 1940 and 2025 was 5 August 2023, with 128 mm of rain in 24 hours.
What was the windiest day in Pekin?
The windiest day measured in Pekin between 1940 and 2025 was 31 October 1979, with winds reaching 53.1 km/h.
What is the warmest month in Pekin?
The warmest month in Pekin is July (24.3 °C on average); the coldest is January (-3.9 °C).
How much does it rain in Pekin?
Pekin receives on average 953 mm of precipitation per year, spread over about 111 rainy days.
Is it sunny in Pekin?
Pekin 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 Pekin?
The heaviest 24-hour snowfall measured in Pekin between 1940 and 2025 was 1 February 2011, with 21.5 cm.
Are there tropical nights in Pekin?
Yes: Pekin has on average 40 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Pekin?
In Pekin, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 13 July 1995, and the lowest was -37.7 °C on 20 January 1985.
Compare Pekin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Pekin