Godfrey climate — normals and trends
Godfrey (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.8 °C and it receives 976 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 (25.6 °C on average) and the coldest is January (-1.5 °C). Rainfall peaks in May.
Godfrey averages 89 frost days, 54 hot days (≥ 30 °C) and 110 rainy days per year.
Godfrey has warmed by +1.4 °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 100 to 78 per year over the period.
The hottest day of the period reached 42.3 °C (on 14 July 1954) and the coldest -28.3 °C (on 23 December 1989).
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
GodfreyIllinois
- coords
- 38.96°, -90.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.8°C
Average daily high
17.7°C
Average daily low
8.2°C
Annual rainfall
976mm
Sunshine / day
9.0h
Mean relative humidity
68%
Average peak wind
17.0km/h
Seasonal range
27.1°C
Frost days (< 0 °C)
89 d/yr
Hot days (≥ 30 °C)
54 d/yr
Rainy days (≥ 1 mm)
110 d/yr
Annual snowfall
40.6 cm
Average feels-like high
16.6 °C
Average feels-like low
6.1 °C
Average peak gust
36.0 km/h
Tropical nights (≥ 20 °C)
60 d/yr
Solar radiation
15.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.26 · 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
42.3 °C
14 July 1954
Coldest day
-28.3 °C
23 December 1989
Wettest day
93 mm
14 September 2008
Windiest day
47.4 km/h
15 December 1971
Strongest gust
100.4 km/h
18 January 1996
Hottest feels-like
44.8 °C
13 July 1995
Coldest feels-like
-35.0 °C
20 January 1985
Snowiest day
26.4 cm
6 November 1951
Sunniest day
14.1 h
29 June 2022
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 | 1.3 °C | -1.5 °C | 46 mm | -13 mm |
| Feb | 5.0 °C | -0.5 °C | 34 mm | -27 mm |
| Mar | 17.0 °C | +5.4 °C | 77 mm | -20 mm |
| Apr | 19.7 °C | +1.4 °C | 157 mm | +47 mm |
| May | 22.8 °C | -0.8 °C | 114 mm | +1 mm |
| Jun | 28.8 °C | +0.2 °C | 162 mm | +71 mm |
| Jul | 30.9 °C | +0.5 °C | 159 mm | +84 mm |
| Aug | 28.9 °C | -0.8 °C | 23 mm | -48 mm |
| Sep | 28.4 °C | +2.4 °C | 64 mm | -11 mm |
| Oct | 21.7 °C | +2.0 °C | 73 mm | -5 mm |
| Nov | 12.8 °C | +1.2 °C | 74 mm | -7 mm |
| Dec | 6.2 °C | +1.0 °C | 21 mm | -43 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 Godfrey?
Godfrey has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.8 °C and it receives 976 mm of precipitation per year.
What is the hottest day ever recorded in Godfrey?
The hottest day measured in Godfrey between 1940 and 2025 was 14 July 1954, reaching 42.3 °C.
What is the coldest day in Godfrey?
The coldest day measured in Godfrey between 1940 and 2025 was 23 December 1989, at -28.3 °C.
Does it snow in Godfrey?
Yes. Godfrey gets on average 40.6 cm of snow per year and has around 89 frost days.
Has the climate of Godfrey warmed?
Yes: Godfrey warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Godfrey?
The wettest day measured in Godfrey between 1940 and 2025 was 14 September 2008, with 93 mm of rain in 24 hours.
What was the windiest day in Godfrey?
The windiest day measured in Godfrey between 1940 and 2025 was 15 December 1971, with winds reaching 47.4 km/h.
What is the warmest month in Godfrey?
The warmest month in Godfrey is July (25.6 °C on average); the coldest is January (-1.5 °C).
How much does it rain in Godfrey?
Godfrey receives on average 976 mm of precipitation per year, spread over about 110 rainy days.
Is it sunny in Godfrey?
Godfrey gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Godfrey?
The heaviest 24-hour snowfall measured in Godfrey between 1940 and 2025 was 6 November 1951, with 26.4 cm.
Are there tropical nights in Godfrey?
Yes: Godfrey has on average 60 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Godfrey?
In Godfrey, between 1940 and 2025, the highest apparent temperature reached 44.8 °C on 13 July 1995, and the lowest was -35.0 °C on 20 January 1985.
Compare Godfrey with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Godfrey