Logan Square climate — normals and trends
Logan Square (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.8 °C and it receives 899 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 (23.5 °C on average) and the coldest is January (-4.6 °C). Rainfall peaks in April.
Logan Square averages 110 frost days, 16 hot days (≥ 30 °C) and 118 rainy days per year.
Logan Square has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 126 to 94 per year over the period.
The hottest day of the period reached 37.7 °C (on 14 July 1995) and the coldest -30.2 °C (on 19 January 1994).
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
Logan SquareIllinois
- coords
- 41.92°, -87.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.8°C
Average daily high
13.4°C
Average daily low
6.2°C
Annual rainfall
899mm
Sunshine / day
9.0h
Mean relative humidity
72%
Average peak wind
23.1km/h
Seasonal range
28.1°C
Frost days (< 0 °C)
110 d/yr
Hot days (≥ 30 °C)
16 d/yr
Rainy days (≥ 1 mm)
118 d/yr
Annual snowfall
76.6 cm
Average feels-like high
11.2 °C
Average feels-like low
2.9 °C
Average peak gust
40.8 km/h
Tropical nights (≥ 20 °C)
39 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.30 · 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
14 July 1995
Coldest day
-30.2 °C
19 January 1994
Wettest day
111 mm
30 August 1975
Windiest day
61.4 km/h
22 February 1974
Strongest gust
108.4 km/h
10 November 1998
Hottest feels-like
44.5 °C
14 July 1995
Coldest feels-like
-37.7 °C
20 January 1985
Snowiest day
24.4 cm
1 December 2006
Sunniest day
14.7 h
14 June 2019
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 | -1.1 °C | +0.3 °C | 47 mm | -8 mm |
| Feb | 0.7 °C | +0.5 °C | 27 mm | -21 mm |
| Mar | 10.7 °C | +5.4 °C | 91 mm | +18 mm |
| Apr | 12.8 °C | +1.1 °C | 67 mm | -31 mm |
| May | 15.9 °C | -2.1 °C | 93 mm | +1 mm |
| Jun | 25.3 °C | +0.8 °C | 124 mm | +36 mm |
| Jul | 27.6 °C | +0.4 °C | 124 mm | +40 mm |
| Aug | 25.6 °C | -0.8 °C | 74 mm | -9 mm |
| Sep | 24.0 °C | +1.4 °C | 23 mm | -50 mm |
| Oct | 17.7 °C | +1.6 °C | 76 mm | +2 mm |
| Nov | 9.3 °C | +1.1 °C | 65 mm | -3 mm |
| Dec | 1.2 °C | -0.5 °C | 69 mm | +6 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 Logan Square?
Logan Square has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.8 °C and it receives 899 mm of precipitation per year.
What is the hottest day ever recorded in Logan Square?
The hottest day measured in Logan Square between 1940 and 2025 was 14 July 1995, reaching 37.7 °C.
What is the coldest day in Logan Square?
The coldest day measured in Logan Square between 1940 and 2025 was 19 January 1994, at -30.2 °C.
Does it snow in Logan Square?
Yes. Logan Square gets on average 76.6 cm of snow per year and has around 110 frost days.
Has the climate of Logan Square warmed?
Yes: Logan Square warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Logan Square?
The wettest day measured in Logan Square between 1940 and 2025 was 30 August 1975, with 111 mm of rain in 24 hours.
What was the windiest day in Logan Square?
The windiest day measured in Logan Square between 1940 and 2025 was 22 February 1974, with winds reaching 61.4 km/h.
What is the warmest month in Logan Square?
The warmest month in Logan Square is July (23.5 °C on average); the coldest is January (-4.6 °C).
How much does it rain in Logan Square?
Logan Square receives on average 899 mm of precipitation per year, spread over about 118 rainy days.
Is it sunny in Logan Square?
Logan Square 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 Logan Square?
The heaviest 24-hour snowfall measured in Logan Square between 1940 and 2025 was 1 December 2006, with 24.4 cm.
Are there tropical nights in Logan Square?
Yes: Logan Square has on average 39 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Logan Square?
In Logan Square, between 1940 and 2025, the highest apparent temperature reached 44.5 °C on 14 July 1995, and the lowest was -37.7 °C on 20 January 1985.
Compare Logan Square with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Logan Square