Waterloo (IA)
July
Weather in Waterloo, Iowa for July 2026
Your guide to Waterloo weather in July - trends and predictions
Extreme Heat Warning - See hour by hour.
So far, July 2026 in Waterloo is slightly warmer than the historical average by 1.6 °F.
The forecast for the next days in Waterloo predicts a temperature of 27.6 °F, which is cooler than the historical average.
In general, the average temperature in Waterloo at the beginning of July is 28 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 29.4 °F by the end of July.
Waterloo in July brings notable rainfall, with an average of 20 rainy days and a total precipitation of 279.5 mm.
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Temperatures
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11
Dry days
20
Rainy days
0
Snow days
27°/18°
Temperatures
16 km/h
Avg max wind
83 %
Avg humidity
Waterloo Weather July
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Temperatures trend during July in Waterloo
See the weather trend as well as the moving average line
July weather in Waterloo day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 |  Partly cloudy | 27° /16° | 5.2 mm | 8 | |
| Jul. 2 |  Moderate or heavy rain shower | 28° /18° | 44.3 mm | 7 | |
| Jul. 3 | Partly cloudy | 30° /18° | 5.3 mm | 8 | |
| Jul. 4 | Moderate or heavy rain shower | 28° /19° | 3.2 mm | 8 | |
| Jul. 5 | Moderate rain at times | 27° /18° | 10.2 mm | 8 | |
| Jul. 6 |  Cloudy | 28° /17° | 0.6 mm | 7 | |
| Jul. 7 | Moderate rain at times | 28° /18° | 0.8 mm | 8 | |
| Jul. 8 | Moderate or heavy rain shower | 27° /19° | 20.9 mm | 8 | |
| Jul. 9 |  Overcast | 27° /18° | 1.6 mm | 7 | |
| Jul. 10 | Moderate rain at times | 27° /18° | 5.6 mm | 8 | |
| Jul. 11 |  Patchy rain possible | 29° /17° | 9.2 mm | 8 | |
| Jul. 12 | Overcast | 28° /17° | 0 mm | 8 | |
| Jul. 13 | Patchy rain possible | 29° /18° | 0.1 mm | 8 | |
| Jul. 14 | Moderate or heavy rain shower | 31° /18° | 1.9 mm | 8 | |
| Jul. 15 |  Heavy rain at times | 31° /19° | 0.4 mm | 8 | |
| Jul. 16 | Partly cloudy | 27° /20° | 33.5 mm | 8 | |
| Jul. 17 | Overcast | 26° /16° | 0.2 mm | 7 | |
| Jul. 18 | Cloudy | 26° /16° | 0.1 mm | 7 | |
| Jul. 19 | Cloudy | 27° /17° | 1.4 mm | 7 | |
| Jul. 20 | Patchy rain possible | 26° /16° | 8.3 mm | 6 | |
| Jul. 21 | Moderate rain at times | 26° /17° | 4.2 mm | 7 | |
| Jul. 22 | Patchy rain possible | 28° /17° | 0.8 mm | 8 | |
| Jul. 23 | Moderate or heavy rain shower | 29° /18° | 2.2 mm | 8 | |
| Jul. 24 | Moderate or heavy rain shower | 25° /18° | 5.3 mm | 7 | |
| Jul. 25 | Overcast | 28° /18° | 0.1 mm | 5 | |
| Jul. 26 | Moderate or heavy rain shower | 28° /19° | 19.1 mm | 8 | |
| Jul. 27 |  Sunny | 38° /24° | 0 mm | 9.6 | |
| Jul. 28 | Sunny | 30° /21° | 0 mm | 8.2 | |
| Jul. 29 | Sunny | 28° /19° | 0 mm | 8.7 | |
| Jul. 30 | Sunny | 27° /18° | 22.8 mm | 6.3 | |
| Jul. 31 | Sunny | 27° /19° | 3.1 mm | 7 | |
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Important Notice
Our weather forecast for Waterloo in July is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Waterloo forecast closer to your planned date for the most up-to-date weather information.
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Waterloo in July - FAQ
What are the expected maximum and minimum temperatures in Waterloo during July?
During July, expect a variety of temperatures with highs around 27° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Waterloo during July?
Significant rainfall exceeding 279.5 mm is expected in Waterloo during July, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Waterloo during July?
The average wind speed in Waterloo during July is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in Waterloo
Explore the daily rainfall trends and prepare for Waterloos July weather 💧
Typically, Waterloo has 20 rainy days in July with a total of 279.5 mm of rainfall.
UV exposure in Waterloo during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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