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City briefing

Westmont

Illinois, United States · 25,000 people
Jan
Feb
Mar
Apr
May
Jun
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The year’s records
Annual mean 11°C · wettest around March · prevailing wind SW
Warmest
27.6 °C
Coldest
-2.8 °C
Wettest
40%
Windiest
6.0 m/s
Prevailing
SW
4.9 m/s average

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

Jan
Feb
Mar
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May
Jun
Jul
Aug
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Every reading

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

The average temperature in Westmont over the whole year is 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -5°C.

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

MonthHighLowFeels likeChance of rainCloudWindBeing outsideSunWalking
January-2°C-5°C-8°C29%68%4.5 m/s001
February1°C-3°C-5°C29%58%4.6 m/s109
March7°C2°C1°C33%60%4.8 m/s4021
April12°C6°C7°C31%60%4.7 m/s19145
May19°C13°C16°C33%57%4.1 m/s491360
June26°C19°C24°C30%48%3.8 m/s593938
July27°C21°C28°C31%47%3.2 m/s495619
August27°C20°C27°C30%45%3.2 m/s555224
September24°C16°C22°C30%47%3.4 m/s673251
October16°C10°C12°C33%54%3.9 m/s36561
November8°C3°C2°C29%57%4.3 m/s7027
December2°C-1°C-4°C32%65%4.3 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 Westmont weather by season

Year round, Westmont has days of about -2°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -5°C to 21°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around March and least likely around February. 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.

Westmont weather in winterDecember to February

High 0°CLow -3°CRain 30%

Winter in Westmont has typical daily highs of about 0°C and lows of about -3°C, with a 30% chance of rain on a given day.

Westmont weather in springMarch to May

High 13°CLow 7°CRain 32%

Spring in Westmont has typical daily highs of about 13°C and lows of about 7°C, with a 32% chance of rain on a given day.

Westmont weather in summerJune to August

High 26°CLow 20°CRain 30%

Summer in Westmont has typical daily highs of about 26°C and lows of about 20°C, with a 30% chance of rain on a given day.

Westmont weather in autumnSeptember to November

High 16°CLow 10°CRain 31%

Autumn in Westmont has typical daily highs of about 16°C and lows of about 10°C, with a 31% chance of rain on a given day.

When is the rainy season in Westmont?

Westmont has no sharply defined rainy season: the chance of rain on a given day runs from 29% in February, the driest month, to 33% in March, the wettest.

What time of year is Westmont windiest?

Winds in Westmont are highest in March, averaging 4.8 m/s (17 km/h), and lightest in July, at 3.2 m/s (12 km/h). The prevailing wind is from the SW.

What is the average temperature in Westmont year round?

The average temperature in Westmont over the whole year is 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -5°C.

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