Waterloo

Aleutians East Borough, Iowa, United States

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Current Weather

18°

Overcast

Feels Like: 20°

Min: 16°

Max: 22°

The next few hours will be humid and overcast, with tomorrow reaching 19°C and dropping to 18°C. The coming days will be drizzle

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Hourly Forecast

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Today
Tomorrow

Daylight Hours

06:55

Sunrise

19:12

Sunset

12 hours 16 minutes of sunlight today

Moon

Waxing Crescent

11:54

Moonrise

20:40

Moonset

Daily Forecast

Tuesday

16°
22°

Today

13°
19°

Thursday

18°
23°

Friday

17°
23°

Saturday

19°
24°

Sunday

16°
20°

Monday

14°
20°

Tuesday

13°
20°

Wednesday

13°
20°

Thursday

13°
20°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

84% Humid
Low High

Weather in Waterloo tomorrow, September 16, 2026

Expect a muted, overcast feel in Waterloo on September 16, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. The morning sky stays heavily clouded, with cover near 100% around 02:00. Grey conditions set the early tone before any later change.

Expect highs of 19°C and cooler readings close to 13°C. Expect humidity between 75% and 91%, most humid near 07:00. Winds stay light, near 3.8 km/h by 12:00, so the day feels still more than breezy.

Expect persistent cloud later on, with amounts around 78% by 15:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 16.0 km on average, though it can drop toward 15.2 km in thicker cloud or showers. Daylight runs from 06:56 to 19:10, lasting 12 hours 13 minutes of sunlight today.

In short, cloud leads the story in Waterloo on September 16, 2026; expect limited sun and a peak around 19°C.

Frequently asked questions about weather in Waterloo

How warm does it get in Waterloo?

The warmest month in Waterloo is July, with average high temperatures of 28°C. The average temperature during this period is around 23°C.

How cold does it get in Waterloo?

The coldest month in Waterloo is January, with average low temperatures of -10°C. The average temperature during this period is around -7°C.

What is the wettest time of year in Waterloo?

The wettest month in Waterloo is May, with an average of 141mm of precipitation.

What is the driest time of year in Waterloo?

The driest month in Waterloo is February, with an average of 38mm of precipitation.

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