West Brooklyn has cold winters and pleasant summers
A typical July afternoon reaches 83°, a January night drops to 14°, and about 29 inches of snow falls in a normal winter.
A year in West Brooklyn at a glance
Each month’s typical high and low, and what it brings.
What stands out about West Brooklyn’s climate
Read from where West Brooklyn sits among Illinois’s towns. The page puts what stands out first.
What a year in West Brooklyn feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 167 frost-free days a year
In half of years the last 32° night comes by April 27 and the first by October 12.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with West Brooklyn’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
167 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 12.
About 29" a winter over 10 days with an inch or more, most in January. Snow covers the ground about 44 days a year.
Months averaging under 55° run from October through April. Heating is 91% of the year’s heating-and-cooling load.
About 14 days a year reach 90°, and July afternoons average 83°.
The nicest months are May, June, July, 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 →29 inches of snow, 38 of rain and melt
June is the wettest month and January the driest. Rain or snow falls on about 110 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Warmer than it used to be
The last 30 years in West Brooklyn averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.4°).
A smaller shift than in 68% of U.S. towns.
Change by month
How West Brooklyn compares
Against every U.S. town on TownTapestry, each counted once, with its place in Illinois.
West 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 | 29° | 14° | 1.7" | 9.8" | 8 | 17 | 12° – 33° |
| February | 34° | 18° | 1.7" | 6.9" | 7 | 11 | 12° – 37° |
| March | 47° | 28° | 2.4" | 3.8" | 8 | 4 | 28° – 52° |
| April | 60° | 37° | 3.6" | 0.9" | 11 | 0 | 40° – 55° |
| May | 71° | 49° | 4.8" | 0 | 13 | 0 | 54° – 67° |
| June | 80° | 58° | 5.0" | 0 | 11 | 0 | 65° – 74° |
| July | 83° | 62° | 4.1" | 0 | 9 | 0 | 66° – 79° |
| August | 81° | 60° | 3.9" | 0 | 10 | 0 | 65° – 77° |
| September | 76° | 53° | 3.5" | 0 | 8 | 0 | 58° – 69° |
| October | 62° | 41° | 3.0" | 0 | 10 | 0 | 47° – 57° |
| November | 47° | 30° | 2.4" | 1.0" | 8 | 1 | 30° – 48° |
| December | 34° | 20° | 2.0" | 6.5" | 8 | 9 | 12° – 38° |
| Year | 59° | 39° | 38.2" | 28.9" | 110 | 44 |
Heating and cooling a home in West Brooklyn
91% 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. December swings the most: from 1991 to 2020 its average ranged from 12° to 38°. June is the most reliable, staying within 8°.
Common questions about West Brooklyn’s climate
What is the coldest month in West Brooklyn?
January, with a typical high of 29° and a low of 14°.
What is the hottest month in West Brooklyn?
July, with a typical high of 83° and a low of 62°. About 14 days a year reach 90°.
How much snow does West Brooklyn get?
About 29 inches in a normal winter, most of it in January.
When is the first frost in West Brooklyn?
In half of years the first 32° night comes by October 12, and the last spring frost by April 27.
What is the rainiest month in West Brooklyn?
June, with 5.0 inches of rain and melted snow. The year totals 38 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in West Brooklyn.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for West Brooklyn itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Amboy, IL (10 mi, snow) and Compton 1 Nw, IL (3 mi, frost, heat and degree days). 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.