Freeport

Washington County, Illinois, United States

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Current Weather

17°

Mostly Clear

Feels Like: 19°

Min:

Max: 20°

The next few hours will be clear, with tomorrow reaching 25°C and dropping to 14°C. The coming days will be mostly cloudy

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Hourly Forecast

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Today
Tomorrow

Daylight Hours

06:43

Sunrise

19:02

Sunset

12 hours 19 minutes of sunlight today

Moon

Waxing Crescent

10:34

Moonrise

20:04

Moonset

Daily Forecast

Monday

20°

Today

17°
25°

Wednesday

14°
22°

Thursday

18°
25°

Friday

17°
26°

Saturday

19°
26°

Sunday

16°
23°

Monday

14°
22°

Tuesday

12°
22°

Wednesday

12°
20°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

66% Comfortable
Low High

Weather in Freeport tomorrow, September 15, 2026

Freeport stays under cloudy skies on September 15, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. The first half of the day looks overcast, as cloud amounts reach about 100% around 00:00. Brighter weather, if it comes, waits until later.

The day peaks near 25°C and cools toward 17°C. Moisture in the air spans 64%-98%, with the highest values around 07:00. Winds stay light, near 9.0 km/h by 06:00, so the day feels still more than breezy.

Expect persistent cloud later on, with amounts around 90% by 12:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 13.1 km on average, though it can drop toward 0.7 km in thicker cloud or showers. Expect sunrise at 06:44, sunset at 19:01, and 12 hours 16 minutes of sunlight today overall.

Taken together, overcast skies in Freeport on September 15, 2026 favour indoor or covered options, with temperatures near 25°C.

Frequently asked questions about weather in Freeport

How warm does it get in Freeport?

The warmest month in Freeport 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 Freeport?

The coldest month in Freeport is January, with average low temperatures of -8°C. The average temperature during this period is around -5°C.

What is the wettest time of year in Freeport?

The wettest month in Freeport is May, with an average of 121mm of precipitation.

What is the driest time of year in Freeport?

The driest month in Freeport is February, with an average of 46mm of precipitation.

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