Showing
Best for
Typical-year weather map

Find your kind of day, anywhere on Earth.

I loved in , around .
— it says where and when in one go. Read on your device; the file never leaves the browser.
City briefing

Northbrook

Illinois, United States · 35,000 people
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
The year’s records
Annual mean 11°C · wettest around April · prevailing wind SW
Warmest
26.2 °C
Coldest
-2.8 °C
Wettest
17%
Windiest
6.5 m/s
Prevailing
SW
5.6 m/s average

When this place is good five ratings · thirty-six ten-day sections · click a cell to read it

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Every reading

bars actual · line feels-like, °C
-15-10-50510152025JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember-15-10-50510152025JFMAMJJASOND

The average temperature in Northbrook over the whole year is 11°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -4°C.

Month by month Northbrook climate by month: average temperatures year round · click a month to read it

MonthHighLowFeels likeChance of rainCloudWindBeing outsideSunWalking
January-2°C-4°C-9°C10%70%5.5 m/s001
February1°C-3°C-6°C9%60%5.5 m/s107
March6°C2°C-0°C11%61%5.6 m/s2016
April11°C6°C5°C12%62%5.4 m/s14038
May17°C13°C14°C11%58%4.8 m/s43960
June24°C19°C22°C9%48%4.5 m/s633348
July26°C22°C26°C8%47%4.0 m/s585327
August26°C21°C25°C7%46%4.0 m/s654932
September23°C17°C21°C8%49%4.4 m/s702658
October15°C11°C11°C11%55%5.0 m/s33461
November7°C4°C1°C8%59%5.3 m/s5024
December2°C-1°C-4°C10%66%5.2 m/s006

High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.

Seasons, and the year in short Northbrook weather by season

Year round, Northbrook has days of about -2°C at their warmest in January, its coolest month, and 26°C in July, its warmest; the coolest hours of the day run from -4°C to 22°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around April and least likely around August. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.

Northbrook weather in winterDecember to February

High 0°CLow -3°CRain 9%

Winter in Northbrook has typical daily highs of about 0°C and lows of about -3°C, with a 9% chance of rain on a given day.

Northbrook weather in springMarch to May

High 11°CLow 7°CRain 11%

Spring in Northbrook has typical daily highs of about 11°C and lows of about 7°C, with a 11% chance of rain on a given day.

Northbrook weather in summerJune to August

High 25°CLow 20°CRain 8%

Summer in Northbrook has typical daily highs of about 25°C and lows of about 20°C, with a 8% chance of rain on a given day.

Northbrook weather in autumnSeptember to November

High 15°CLow 10°CRain 9%

Autumn in Northbrook has typical daily highs of about 15°C and lows of about 10°C, with a 9% chance of rain on a given day.

When is the rainy season in Northbrook?

Northbrook has no sharply defined rainy season: the chance of rain on a given day runs from 7% in August, the driest month, to 12% in April, the wettest.

What time of year is Northbrook windiest?

Winds in Northbrook are highest in March, averaging 5.6 m/s (20 km/h), and lightest in July, at 4.0 m/s (14 km/h). The prevailing wind is from the SW.

What is the average temperature in Northbrook year round?

The average temperature in Northbrook over the whole year is 11°C. July is the hottest month, with highs of about 26°C; January is the coldest, with lows of about -4°C.

Guides