Cicero climate — normals and trends
Cicero (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.4 °C and it receives 1,317 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 (21.4 °C on average) and the coldest is January (-5.1 °C). Rainfall peaks in June.
Cicero averages 125 frost days, 10 hot days (≥ 30 °C) and 170 rainy days per year.
Cicero has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 135 to 115 per year over the period.
The hottest day of the period reached 36.1 °C (on 21 June 1953) and the coldest -30.7 °C (on 15 January 1957).
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
CiceroNew York
- coords
- 43.18°, -76.12°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.4°C
Average daily high
12.8°C
Average daily low
4.2°C
Annual rainfall
1,317mm
Sunshine / day
8.2h
Mean relative humidity
75%
Average peak wind
16.1km/h
Seasonal range
26.5°C
Frost days (< 0 °C)
125 d/yr
Hot days (≥ 30 °C)
10 d/yr
Rainy days (≥ 1 mm)
170 d/yr
Annual snowfall
168.4 cm
Average feels-like high
11.0 °C
Average feels-like low
1.4 °C
Average peak gust
37.9 km/h
Tropical nights (≥ 20 °C)
12 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.33 · 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
36.1 °C
21 June 1953
Coldest day
-30.7 °C
15 January 1957
Wettest day
110 mm
27 September 1985
Windiest day
50.0 km/h
15 October 1954
Strongest gust
130.0 km/h
25 November 1950
Hottest feels-like
40.4 °C
5 August 1955
Coldest feels-like
-35.7 °C
15 January 1957
Snowiest day
34.0 cm
10 March 1964
Sunniest day
14.9 h
23 June 2016
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 | -2.6 °C | -1.1 °C | 100 mm | +2 mm |
| Feb | -1.0 °C | -0.6 °C | 119 mm | +33 mm |
| Mar | 8.9 °C | +4.2 °C | 87 mm | -15 mm |
| Apr | 12.9 °C | +0.7 °C | 143 mm | +27 mm |
| May | 17.9 °C | -1.1 °C | 189 mm | +75 mm |
| Jun | 24.9 °C | +1.2 °C | 157 mm | +37 mm |
| Jul | 27.8 °C | +1.6 °C | 77 mm | -39 mm |
| Aug | 26.1 °C | +1.0 °C | 74 mm | -38 mm |
| Sep | 23.3 °C | +2.2 °C | 52 mm | -58 mm |
| Oct | 16.4 °C | +1.5 °C | 118 mm | +5 mm |
| Nov | 6.6 °C | -1.1 °C | 138 mm | +19 mm |
| Dec | -0.1 °C | -1.3 °C | 129 mm | +16 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 Cicero?
Cicero has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.4 °C and it receives 1,317 mm of precipitation per year.
What is the hottest day ever recorded in Cicero?
The hottest day measured in Cicero between 1940 and 2025 was 21 June 1953, reaching 36.1 °C.
What is the coldest day in Cicero?
The coldest day measured in Cicero between 1940 and 2025 was 15 January 1957, at -30.7 °C.
Does it snow in Cicero?
Yes. Cicero gets on average 168.4 cm of snow per year and has around 125 frost days.
Has the climate of Cicero warmed?
Yes: Cicero warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Cicero?
The wettest day measured in Cicero between 1940 and 2025 was 27 September 1985, with 110 mm of rain in 24 hours.
What was the windiest day in Cicero?
The windiest day measured in Cicero between 1940 and 2025 was 15 October 1954, with winds reaching 50.0 km/h.
What is the warmest month in Cicero?
The warmest month in Cicero is July (21.4 °C on average); the coldest is January (-5.1 °C).
How much does it rain in Cicero?
Cicero receives on average 1,317 mm of precipitation per year, spread over about 170 rainy days.
Is it sunny in Cicero?
Cicero gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Cicero?
The heaviest 24-hour snowfall measured in Cicero between 1940 and 2025 was 10 March 1964, with 34.0 cm.
Are there tropical nights in Cicero?
Yes: Cicero has on average 12 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Cicero?
In Cicero, between 1940 and 2025, the highest apparent temperature reached 40.4 °C on 5 August 1955, and the lowest was -35.7 °C on 15 January 1957.
Compare Cicero with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Cicero