Johnson County (Iowa City)
April
Weather in Johnson County, Iowa for April 2026
Your guide to Johnson County weather in April - trends and predictions
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So far, April 2026 in Johnson County is slightly warmer than the historical average by 0.7 °F.
Expect cooler weather in the next days in Johnson County with the forecast suggesting a temperature of 18.3 °F, lower than the historical average.
In general, the average temperature in Johnson County at the beginning of April is 11.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.4 °F by the end of April.
The climate of Johnson County in April is notably wet, with an average of 13 rainy days, and a total of 149.7 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
13
Rainy days
0
Snow days
16°/6°
Temperatures
25 km/h
Avg max wind
73 %
Avg humidity
Johnson County Weather April
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Temperatures trend during April in Johnson County
See the weather trend as well as the moving average line
April weather in Johnson County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Apr. 1 |  Moderate rain at times | 9° /2° | 24.5 mm | 2 | |
| Apr. 2 | Moderate or heavy rain shower | 22° /5° | 49.5 mm | 3 | |
| Apr. 3 |  Overcast | 12° /2° | 1.5 mm | 3 | |
| Apr. 4 | Moderate rain at times | 13° /3° | 5.8 mm | 2 | |
| Apr. 5 | Overcast | 10° /2° | 0.1 mm | 4 | |
| Apr. 6 |  Sunny | 11° /-1° | 0 mm | 5 | |
| Apr. 7 |  Cloudy | 6° /0° | 1.2 mm | 2 | |
| Apr. 8 |  Partly cloudy | 14° /0° | 0 mm | 3 | |
| Apr. 9 | Overcast | 15° /5° | 8.8 mm | 4 | |
| Apr. 10 |  Patchy rain possible | 14° /4° | 31.9 mm | 4 | |
| Apr. 11 | Overcast | 13° /4° | 0 mm | 4 | |
| Apr. 12 | Partly cloudy | 20° /7° | 0 mm | 3 | |
| Apr. 13 | Overcast | 22° /12° | 44.3 mm | 3 | |
| Apr. 14 | Overcast | 20° /14° | 0 mm | 3 | |
| Apr. 15 | Cloudy | 20° /9° | 2.3 mm | 3 | |
| Apr. 16 |  Heavy rain at times | 22° /7° | 2.4 mm | 5 | |
| Apr. 17 | Moderate or heavy rain shower | 22° /10° | 62.8 mm | 4 | |
| Apr. 18 | Patchy rain possible | 17° /6° | 6.9 mm | 6 | |
| Apr. 19 | Overcast | 12° /2° | 0 mm | 6 | |
| Apr. 20 | Moderate or heavy rain shower | 14° /3° | 18.9 mm | 5 | |
| Apr. 21 | Overcast | 20° /9° | 0.1 mm | 5 | |
| Apr. 22 | Sunny | 30° /16° | 0 mm | 7 | |
| Apr. 23 |  Moderate rain | 23° /15° | 11.8 mm | 7 | |
| Apr. 24 | Patchy rain possible | 17° /10° | 4.8 mm | 7 | |
| Apr. 25 | Partly cloudy | 17° /7° | 0 mm | 6 | |
| Apr. 26 | Patchy rain possible | 21° /11° | 0.6 mm | 1 | |
| Apr. 27 |  Heavy rain | 19° /8° | 27.3 mm | 3 | |
| Apr. 28 | Sunny | 16° /6° | 0 mm | 4 | |
| Apr. 29 | Patchy rain possible | 20° /10° | 0.2 mm | 3 | |
| Apr. 30 | Patchy rain possible | 19° /12° | 0.3 mm | 3 | |
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Important Notice
Our weather forecast for Johnson County in April 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 April - FAQ
What are the expected maximum and minimum temperatures in Johnson County during April?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Johnson County during April?
Significant rainfall exceeding 149.7 mm is expected in Johnson County during April, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Johnson County during April?
The average wind speed in Johnson County during April is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
April rainfall patterns in Johnson County
Explore the daily rainfall trends and prepare for Johnson Countys April weather 💧
Typically, Johnson County has 13 rainy days in April with a total of 149.7 mm of rainfall.
UV exposure in Johnson County during April
Stay informed about UV levels for safe outdoor activities throughout the month of April ☀️
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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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