Plainfield

Schuyler County, Illinois, United States

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Current Weather

23°

Overcast

Feels Like: 25°

Min: 18°

Max: 30°

The next few hours will be overcast, with today reaching 30°C and dropping to 19°C. The coming days will be drizzle

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Compare today's weather with yesterday's data and track temperature trends over time.

Hourly Forecast

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Today
Tomorrow

Daylight Hours

06:39

Sunrise

18:55

Sunset

12 hours 15 minutes of sunlight today

Moon

Waxing Crescent

11:33

Moonrise

20:26

Moonset

Daily Forecast

Today

18°
30°

Wednesday

19°
23°

Thursday

20°
26°

Friday

19°
25°

Saturday

19°
27°

Sunday

18°
23°

Monday

16°
22°

Tuesday

14°
22°

Wednesday

15°
22°

Thursday

15°
20°

Air Quality Data Available

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UV Index

No protection needed
2 Low
Low Extreme

Humidity

70% Comfortable
Low High

Weather in Plainfield today, September 15, 2026

Plainfield looks cloudy on September 15, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. The morning sky stays heavily clouded, with cover near 100% around 09:00. Grey conditions set the early tone before any later change.

Temperatures climb from an overnight low near 18°C toward a daytime high of about 30°C. Expect humidity between 61% and 89%, most humid near 22:00. A lighter breeze peaks around 10:00 near 5.5 km/h.

The afternoon keeps an overcast feel, as cloud reaches about 100% around 12:00. Outdoor plans may still want a flexible backup. Expect visibility near 16.1 km, with poorer spells close to 15.8 km. The sun rises at 06:39 and sets at 18:55, for a total of 12 hours 15 minutes of sunlight today.

The practical takeaway for Plainfield on September 15, 2026 is a cloudy day that stays usable, just not particularly bright, around 30°C.

Frequently asked questions about weather in Plainfield

How warm does it get in Plainfield?

The warmest month in Plainfield is July, with average high temperatures of 29°C. The average temperature during this period is around 24°C.

How cold does it get in Plainfield?

The coldest month in Plainfield is January, with average low temperatures of -7°C. The average temperature during this period is around -4°C.

What is the wettest time of year in Plainfield?

The wettest month in Plainfield is May, with an average of 125mm of precipitation.

What is the driest time of year in Plainfield?

The driest month in Plainfield is February, with an average of 54mm of precipitation.

View full climate insights for Plainfield →

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Metric (°C, km/h)