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City briefing

Frankfort

Illinois, United States · 20,000 people
Jan
Feb
Mar
Apr
May
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Aug
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The year’s records
Annual mean 11°C · wettest around July · prevailing wind SW
Warmest
27.6 °C
Coldest
-2.6 °C
Wettest
86%
Windiest
5.6 m/s
Prevailing
SW
4.5 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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Jul
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Every reading

bars actual · line feels-like, °C
-15-10-5051015202530JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember-15-10-5051015202530JFMAMJJASOND

The average temperature in Frankfort 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 Frankfort climate by month: average temperatures year round · click a month to read it

MonthHighLowFeels likeChance of rainCloudWindBeing outsideSunWalking
January-2°C-5°C-7°C63%63%4.0 m/s002
February2°C-3°C-4°C64%51%4.0 m/s109
March7°C2°C2°C71%52%4.2 m/s4021
April13°C6°C8°C66%50%4.2 m/s20144
May20°C13°C17°C72%47%3.5 m/s491456
June26°C19°C25°C68%37%3.2 m/s544033
July27°C21°C28°C72%36%2.6 m/s425614
August27°C19°C27°C72%35%2.5 m/s495220
September24°C16°C23°C70%36%2.7 m/s633444
October16°C9°C13°C71%46%3.3 m/s36558
November8°C3°C3°C68%48%3.7 m/s7027
December2°C-2°C-4°C70%57%3.8 m/s007

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 Frankfort weather by season

Year round, Frankfort 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 July and least likely around January. 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.

Frankfort weather in winterDecember to February

High 1°CLow -3°CRain 66%

Winter in Frankfort has typical daily highs of about 1°C and lows of about -3°C, with a 66% chance of rain on a given day.

Frankfort weather in springMarch to May

High 13°CLow 7°CRain 70%

Spring in Frankfort has typical daily highs of about 13°C and lows of about 7°C, with a 70% chance of rain on a given day.

Frankfort weather in summerJune to August

High 27°CLow 19°CRain 71%

Summer in Frankfort has typical daily highs of about 27°C and lows of about 19°C, with a 71% chance of rain on a given day.

Frankfort weather in autumnSeptember to November

High 16°CLow 9°CRain 69%

Autumn in Frankfort has typical daily highs of about 16°C and lows of about 9°C, with a 69% chance of rain on a given day.

When is the rainy season in Frankfort?

Frankfort has no sharply defined rainy season: the chance of rain on a given day runs from 63% in January, the driest month, to 72% in July, the wettest.

What time of year is Frankfort windiest?

Winds in Frankfort are highest in March, averaging 4.2 m/s (15 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 Frankfort year round?

The average temperature in Frankfort 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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