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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
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Deborah Kolb // Shutterstock
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
- 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
- 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

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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
- 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
- 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

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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
- 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
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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
- 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