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City briefing

Sycamore

Illinois, United States · 18,000 people
Jan
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Apr
May
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The year’s records
Annual mean 10°C · wettest around May · prevailing wind SW
Warmest
27.4 °C
Coldest
-3.7 °C
Wettest
47%
Windiest
6.1 m/s
Prevailing
SW
4.8 m/s average

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

Jan
Feb
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May
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Every reading

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

The average temperature in Sycamore over the whole year is 10°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -6°C.

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

MonthHighLowFeels likeChance of rainCloudWindBeing outsideSunWalking
January-3°C-6°C-9°C39%61%4.3 m/s001
February0°C-5°C-6°C36%50%4.4 m/s107
March7°C1°C1°C42%53%4.6 m/s3019
April12°C5°C7°C42%52%4.6 m/s18144
May20°C12°C16°C44%48%4.0 m/s501261
June26°C18°C24°C42%37%3.5 m/s594335
July27°C20°C27°C43%36%2.6 m/s495917
August26°C18°C26°C42%36%2.5 m/s565224
September23°C14°C22°C43%37%2.8 m/s653150
October15°C8°C11°C43%46%3.6 m/s32458
November7°C1°C1°C40%48%4.0 m/s6023
December1°C-3°C-5°C42%57%4.2 m/s005

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 Sycamore weather by season

Year round, Sycamore has days of about -3°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -6°C to 20°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around May 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.

Sycamore weather in winterDecember to February

High -1°CLow -5°CRain 39%

Winter in Sycamore has typical daily highs of about -1°C and lows of about -5°C, with a 39% chance of rain on a given day.

Sycamore weather in springMarch to May

High 13°CLow 6°CRain 43%

Spring in Sycamore has typical daily highs of about 13°C and lows of about 6°C, with a 43% chance of rain on a given day.

Sycamore weather in summerJune to August

High 26°CLow 18°CRain 43%

Summer in Sycamore has typical daily highs of about 26°C and lows of about 18°C, with a 43% chance of rain on a given day.

Sycamore weather in autumnSeptember to November

High 15°CLow 8°CRain 42%

Autumn in Sycamore has typical daily highs of about 15°C and lows of about 8°C, with a 42% chance of rain on a given day.

When is the rainy season in Sycamore?

Sycamore has no sharply defined rainy season: the chance of rain on a given day runs from 36% in February, the driest month, to 44% in May, the wettest.

What time of year is Sycamore windiest?

Winds in Sycamore are highest in March, averaging 4.6 m/s (17 km/h), and lightest in August, at 2.5 m/s (9 km/h). The prevailing wind is from the SW.

What is the average temperature in Sycamore year round?

The average temperature in Sycamore over the whole year is 10°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -6°C.

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