East Brooklyn has chilly winters and warm summers
A typical July afternoon reaches 85°, a January night drops to 16°, and about 23 inches of snow falls in a normal winter.
A year in East Brooklyn at a glance
Each month’s typical high and low, and what it brings.
What stands out about East Brooklyn’s climate
Read from where East Brooklyn sits among Illinois’s towns. The page puts what stands out first.
Warmer than it used to be
The last 30 years in East Brooklyn averaged 1.4° warmer than the 1900s. The biggest change is in December (+2.6°).
A bigger shift than in 64% of U.S. towns.
Change by month
Living with East Brooklyn’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
170 frost-free days. The last frost comes by Apr 27 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 15.
About 23" a winter over 8 days with an inch or more, most in January. Snow covers the ground about 31 days a year.
Months averaging under 55° run from October through April. Heating is 89% of the year’s heating-and-cooling load.
About 16 days a year reach 90°, and July afternoons average 85°.
The nicest months are May, June, August, September and October.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →What a year in East Brooklyn feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
23 inches of snow, 38 of rain and melt
May is the wettest month and February the driest. Rain or snow falls on about 98 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
About 170 frost-free days a year
In half of years the last 32° night comes by April 27 and the first by October 15.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
How East Brooklyn compares
Against every U.S. town on TownTapestry, each counted once, with its place in Illinois.
East Brooklyn weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 32° | 16° | 2.2" | 7.9" | 7 | 12 | 15° – 36° |
| February | 37° | 20° | 1.8" | 4.9" | 6 | 10 | 15° – 39° |
| March | 49° | 30° | 2.3" | 3.5" | 8 | 2 | 30° – 54° |
| April | 62° | 39° | 3.6" | 0.6" | 11 | 0 | 42° – 57° |
| May | 73° | 50° | 4.6" | 0 | 11 | 0 | 55° – 69° |
| June | 82° | 60° | 4.6" | 0 | 9 | 0 | 67° – 75° |
| July | 85° | 64° | 4.1" | 0 | 8 | 0 | 69° – 80° |
| August | 83° | 62° | 3.9" | 0 | 8 | 0 | 67° – 78° |
| September | 78° | 54° | 3.3" | 0 | 7 | 0 | 60° – 70° |
| October | 65° | 43° | 3.2" | 0 | 8 | 0 | 49° – 59° |
| November | 49° | 32° | 2.5" | 0.8" | 8 | 1 | 33° – 49° |
| December | 37° | 22° | 2.0" | 5.6" | 8 | 6 | 15° – 40° |
| Year | 61° | 41° | 38.0" | 23.3" | 98 | 31 |
Heating and cooling a home in East Brooklyn
89% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 15° to 39°. June is the most reliable, staying within 8°.
Common questions about East Brooklyn’s climate
What is the coldest month in East Brooklyn?
January, with a typical high of 32° and a low of 16°.
What is the hottest month in East Brooklyn?
July, with a typical high of 85° and a low of 64°. About 16 days a year reach 90°.
How much snow does East Brooklyn get?
About 23 inches in a normal winter, most of it in January.
When is the first frost in East Brooklyn?
In half of years the first 32° night comes by October 15, and the last spring frost by April 27.
What is the rainiest month in East Brooklyn?
May, with 4.6 inches of rain and melted snow. The year totals 38 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in East Brooklyn.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for East Brooklyn itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Dwight, IL (9 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.