Johnson County (Iowa City)
July
Weather in Johnson County, Iowa for July 2026
Your guide to Johnson County weather in July - trends and predictions
Heat Advisory - See hour by hour.
So far, July 2026 in Johnson County is slightly warmer than the historical average by 1.1 °C.
The forecast for the next days in Johnson County predicts temperatures to be around 27 °C, close to the historical average.
In general, the average temperature in Johnson County at the beginning of July is 32.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.6 °C by the end of July.
Johnson County in July brings notable rainfall, with an average of 19 rainy days and a total precipitation of 422.9 mm.
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Temperatures
Rain 🌧️
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12
Dry days
19
Rainy days
0
Snow days
31°/20°
Temperatures
16 km/h
Avg max wind
78 %
Avg humidity
Johnson County Weather July
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Temperatures trend during July in Johnson County
See the weather trend as well as the moving average line
July weather in Johnson County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 |  Fog | 33° /20° | 3 mm | 10 | |
| Jul. 2 |  Cloudy | 34° /21° | 0.8 mm | 10 | |
| Jul. 3 |  Partly cloudy | 34° /19° | 12.2 mm | 10 | |
| Jul. 4 |  Overcast | 32° /21° | 1.5 mm | 10 | |
| Jul. 5 |  Light rain shower | 31° /21° | 14 mm | 10 | |
| Jul. 6 | Fog | 30° /20° | 0.2 mm | 9 | |
| Jul. 7 | Cloudy | 31° /19° | 0.2 mm | 9 | |
| Jul. 8 |  Torrential rain shower | 29° /19° | 23.2 mm | 9 | |
| Jul. 9 | Fog | 30° /20° | 3.6 mm | 8 | |
| Jul. 10 |  Moderate or heavy rain shower | 30° /20° | 8.3 mm | 8 | |
| Jul. 11 |  Thundery outbreaks possible | 33° /19° | 8.2 mm | 10 | |
| Jul. 12 | Mist | 31° /18° | 0 mm | 9 | |
| Jul. 13 | Overcast | 29° /18° | 0 mm | 9 | |
| Jul. 14 | Fog | 34° /17° | 0 mm | 9 | |
| Jul. 15 | Light rain shower | 32° /19° | 1.6 mm | 9 | |
| Jul. 16 |  Moderate or heavy rain with thunder | 32° /21° | 55.2 mm | 9 | |
| Jul. 17 | Moderate or heavy rain shower | 28° /18° | 8.5 mm | 8 | |
| Jul. 18 | Overcast | 29° /20° | 0.7 mm | 9 | |
| Jul. 19 | Fog | 33° /20° | 0 mm | 9 | |
| Jul. 20 |  Sunny | 37° /20° | 0 mm | 7.9 | |
| Jul. 21 | Sunny | 26° /17° | 0.6 mm | 9.1 | |
| Jul. 22 | Sunny | 22° /12° | 0 mm | 9 | |
| Jul. 23 | Sunny | 23° /14° | 6.4 mm | 8.7 | |
| Jul. 24 | Patchy rain possible | 20° /14° | 10.4 mm | 5 | |
| Jul. 25 | Sunny | 25° /12° | 0 mm | 6 | |
| Jul. 26 | Partly cloudy | 27° /16° | 0 mm | 7 | |
| Jul. 27 | Sunny | 30° /19° | 4.2 mm | 7 | |
| Jul. 28 | Sunny | 34° /23° | 4.4 mm | 8 | |
| Jul. 29 | Sunny | 28° /21° | 6 mm | 7 | |
| Jul. 30 | Sunny | 26° /17° | 11.7 mm | 7 | |
| Jul. 31 | Sunny | 23° /13° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Johnson County 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 Johnson County forecast closer to your planned date for the most up-to-date weather information.
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Johnson County in July - FAQ
What are the expected maximum and minimum temperatures in Johnson County during July?
Expect warm days with temperatures around 31°, cooling to mild conditions of 20° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Johnson County during July?
Significant rainfall exceeding 422.9 mm is expected in Johnson County during July, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Johnson County during July?
The average wind speed in Johnson County during July is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in Johnson County
Explore the daily rainfall trends and prepare for Johnson Countys July weather 💧
Typically, Johnson County has 19 rainy days in July with a total of 422.9 mm of rainfall.
UV exposure in Johnson County during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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Where is Johnson County?Get accurate weather forecasts for Johnson County, located at latitude 41.661 and longitude -91.53. Stay updated with localized weather information tailored for Johnson County.
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