Waterloo 7-day weather forecast

Written by:
September 8, 2025
ESOlex // Shutterstock

Waterloo 7-day weather forecast

Stacker created the forecast for Waterloo, Iowa using data from OpenWeather. This week's high is 91 °F on Saturday, while the low is 49 °F on Monday. There are expected to be 3 sunny days and rain on 3 days this week.

There are currently no weather alerts.

Monday, September 8

- High of 79 °F, low of 49 °F (48% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 6:42 AM, sunset at 7:32 PM
1 / 6
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Tuesday, September 9

- High of 75 °F, low of 57 °F (53% humidity)
- Overcast with a 100% chance of rain (1 mm of rain)
- Moderate risk of harm from sun exposure (3 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 6:43 AM, sunset at 7:30 PM
2 / 6
Matusciac Alexandru // Shutterstock

Wednesday, September 10

- High of 81 °F, low of 59 °F (63% humidity)
- Sunny with a 100% chance of rain (1 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Light breeze (6 mph wind)
- Sunrise at 6:44 AM, sunset at 7:28 PM
3 / 6
Piyawat Nandeenopparit // Shutterstock

Thursday, September 11

- High of 82 °F, low of 61 °F (60% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:45 AM, sunset at 7:26 PM
4 / 6
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Friday, September 12

- High of 83 °F, low of 63 °F (52% humidity)
- Mostly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 6:46 AM, sunset at 7:24 PM
5 / 6
Alex Stemmer // Shutterstock

Saturday, September 13

- High of 91 °F, low of 70 °F (44% humidity)
- Mostly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 6:47 AM, sunset at 7:23 PM
6 / 6
Andrew Lever // Shutterstock

Sunday, September 14

- High of 90 °F, low of 70 °F (47% humidity)
- Overcast with a 20% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Gentle breeze (9 mph wind)
- Sunrise at 6:48 AM, sunset at 7:21 PM
- Last quarter moon

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