Harvey

Platte County, Illinois, United States

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Current Weather

21°

Overcast

Feels Like: 22°

Min: 20°

Max: 23°

The next few hours will be possible light rain, with today reaching 23°C and dropping to 20°C. The coming days will be mostly cloudy

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Hourly Forecast

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6am
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4pm
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6pm
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9pm
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Today
Tomorrow

Daylight Hours

06:38

Sunrise

18:51

Sunset

12 hours 12 minutes of sunlight today

Moon

Waxing Crescent

12:36

Moonrise

20:53

Moonset

Daily Forecast

Today

20°
23°

Thursday

21°
25°

Friday

20°
24°

Saturday

20°
27°

Sunday

20°
22°

Monday

18°
21°

Tuesday

17°
22°

Wednesday

17°
23°

Thursday

14°
21°

Friday

16°
21°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

92% Very Humid
Low High

Weather in Harvey today, September 16, 2026

Expect a muted, overcast feel in Harvey on September 16, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. The first half of the day looks overcast, as cloud amounts reach about 100% around 05:00. Brighter weather, if it comes, waits until later.

Expect highs of 23°C and cooler readings close to 20°C. Relative humidity sits between 88% and 96%, reaching its peak around 20:00. A lighter breeze peaks around 08:00 near 3.9 km/h.

Expect persistent cloud later on, with amounts around 100% by 12:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 11.1 km on average, though it can drop toward 3.4 km in thicker cloud or showers. Daylight runs from 06:38 to 18:51, lasting 12 hours 12 minutes of sunlight today.

Overall, Harvey on September 16, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 23°C.

Frequently asked questions about weather in Harvey

How warm does it get in Harvey?

The warmest month in Harvey 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 Harvey?

The coldest month in Harvey is January, with average low temperatures of -6°C. The average temperature during this period is around -3°C.

What is the wettest time of year in Harvey?

The wettest month in Harvey is May, with an average of 129mm of precipitation.

What is the driest time of year in Harvey?

The driest month in Harvey is December, with an average of 60mm of precipitation.

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Metric (°C, km/h)