Springfield climate — normals and trends
Springfield (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.8 °C and it receives 968 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 (24.6 °C on average) and the coldest is January (-2.9 °C). Rainfall peaks in April.
Springfield averages 102 frost days, 43 hot days (≥ 30 °C) and 111 rainy days per year.
Springfield has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 113 to 91 per year over the period.
The hottest day of the period reached 40.3 °C (on 14 July 1954) and the coldest -30.4 °C (on 20 January 1985).
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
SpringfieldIllinois
- coords
- 39.80°, -89.64°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.8°C
Average daily high
16.7°C
Average daily low
7.0°C
Annual rainfall
968mm
Sunshine / day
8.9h
Mean relative humidity
70%
Average peak wind
19.0km/h
Seasonal range
27.5°C
Frost days (< 0 °C)
102 d/yr
Hot days (≥ 30 °C)
43 d/yr
Rainy days (≥ 1 mm)
111 d/yr
Annual snowfall
48.1 cm
Average feels-like high
15.2 °C
Average feels-like low
4.5 °C
Average peak gust
37.4 km/h
Tropical nights (≥ 20 °C)
45 d/yr
Solar radiation
15.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.29 · 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
40.3 °C
14 July 1954
Coldest day
-30.4 °C
20 January 1985
Wettest day
91 mm
17 August 1997
Windiest day
55.2 km/h
15 December 1971
Strongest gust
115.9 km/h
15 November 1960
Hottest feels-like
44.6 °C
25 August 2023
Coldest feels-like
-37.8 °C
20 January 1985
Snowiest day
25.6 cm
6 November 1951
Sunniest day
14.1 h
26 June 2012
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 | -0.1 °C | -1.4 °C | 34 mm | -22 mm |
| Feb | 4.0 °C | 0.0 °C | 20 mm | -37 mm |
| Mar | 16.0 °C | +5.8 °C | 67 mm | -22 mm |
| Apr | 18.8 °C | +1.5 °C | 127 mm | +20 mm |
| May | 22.8 °C | 0.0 °C | 98 mm | -10 mm |
| Jun | 28.5 °C | +0.7 °C | 154 mm | +55 mm |
| Jul | 30.4 °C | +0.9 °C | 212 mm | +125 mm |
| Aug | 28.1 °C | -0.7 °C | 33 mm | -41 mm |
| Sep | 28.0 °C | +2.5 °C | 50 mm | -28 mm |
| Oct | 21.4 °C | +2.4 °C | 91 mm | +15 mm |
| Nov | 11.8 °C | +1.2 °C | 60 mm | -18 mm |
| Dec | 4.2 °C | +0.3 °C | 34 mm | -27 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 Springfield?
Springfield has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.8 °C and it receives 968 mm of precipitation per year.
What is the hottest day ever recorded in Springfield?
The hottest day measured in Springfield between 1940 and 2025 was 14 July 1954, reaching 40.3 °C.
What is the coldest day in Springfield?
The coldest day measured in Springfield between 1940 and 2025 was 20 January 1985, at -30.4 °C.
Does it snow in Springfield?
Yes. Springfield gets on average 48.1 cm of snow per year and has around 102 frost days.
Has the climate of Springfield warmed?
Yes: Springfield warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Springfield?
The wettest day measured in Springfield between 1940 and 2025 was 17 August 1997, with 91 mm of rain in 24 hours.
What was the windiest day in Springfield?
The windiest day measured in Springfield between 1940 and 2025 was 15 December 1971, with winds reaching 55.2 km/h.
What is the warmest month in Springfield?
The warmest month in Springfield is July (24.6 °C on average); the coldest is January (-2.9 °C).
How much does it rain in Springfield?
Springfield receives on average 968 mm of precipitation per year, spread over about 111 rainy days.
Is it sunny in Springfield?
Springfield 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 Springfield?
The heaviest 24-hour snowfall measured in Springfield between 1940 and 2025 was 6 November 1951, with 25.6 cm.
Are there tropical nights in Springfield?
Yes: Springfield has on average 45 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Springfield?
In Springfield, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 25 August 2023, and the lowest was -37.8 °C on 20 January 1985.
Compare Springfield with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Springfield