Johnson County (Iowa City)
May
Weather in Johnson County, Iowa for May 2027
Your guide to Johnson County weather in May - trends and predictions
Johnson County experiences moderate rainfall in May, with an average of 8 rainy days and a total precipitation of 84.6 mm.
Is May a good time to visit Johnson County? check out the best time to travel to Johnson County page.
✨ Is May a good time to visit Johnson County? – Ask the AI Weatherman
Rain 🌧️
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23
Dry days
8
Rainy days
0
Snow days
21°/10°
Temperatures
20 km/h
Avg max wind
70 %
Avg humidity
Johnson County Weather May
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Temperatures trend during May in Johnson County
See the weather trend as well as the moving average line
May weather in Johnson County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Moderate or heavy rain shower | 15° /7° | 5.6 mm | 6 | |
| May 2 |  Patchy rain possible | 15° /6° | 0.2 mm | 7 | |
| May 3 | Patchy rain possible | 19° /7° | 1.3 mm | 6 | |
| May 4 |  Overcast | 21° /7° | 0.8 mm | 7 | |
| May 5 | Overcast | 16° /8° | 0.1 mm | 6 | |
| May 6 | Overcast | 17° /5° | 0 mm | 6 | |
| May 7 | Patchy rain possible | 20° /7° | 0.2 mm | 7 | |
| May 8 | Overcast | 18° /8° | 0.6 mm | 5 | |
| May 9 |  Sunny | 21° /7° | 0 mm | 8 | |
| May 10 | Sunny | 23° /8° | 0 mm | 9 | |
| May 11 | Sunny | 22° /8° | 0 mm | 9 | |
| May 12 |  Light rain | 25° /11° | 3 mm | 8 | |
| May 13 | Patchy rain possible | 22° /13° | 0.2 mm | 8 | |
| May 14 | Overcast | 25° /12° | 0 mm | 8 | |
| May 15 | Light rain | 29° /16° | 3.1 mm | 6 | |
| May 16 | Light rain | 27° /15° | 3.8 mm | 5 | |
| May 17 | Light rain | 22° /14° | 5.8 mm | 6 | |
| May 18 | Light rain | 23° /12° | 5.2 mm | 5 | |
| May 19 |  Moderate rain | 19° /10° | 22.5 mm | 5 | |
| May 20 |  Heavy rain | 18° /9° | 25 mm | 7 | |
| May 21 | Light rain | 12° /9° | 4.5 mm | 3 | |
| May 22 | Patchy rain possible | 19° /10° | 0.3 mm | 7 | |
| May 23 | Patchy rain possible | 21° /10° | 2.4 mm | 4 | |
| May 24 | Overcast | 22° /12° | 0.1 mm | 7 | |
| May 25 | Overcast | 20° /13° | 0 mm | 7 | |
| May 26 |  Fog | 23° /12° | 0 mm | 7 | |
| May 27 | Overcast | 25° /14° | 0 mm | 8 | |
| May 28 |  Cloudy | 22° /14° | 0 mm | 8 | |
| May 29 | Fog | 22° /11° | 0 mm | 8 | |
| May 30 | Overcast | 29° /15° | 0 mm | 8 | |
| May 31 |  Thundery outbreaks possible | 29° /14° | 0.1 mm | 9 | |
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Important Notice
Our weather forecast for Johnson County in May 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 May - FAQ
What are the expected maximum and minimum temperatures in Johnson County during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Johnson County during May?
Moderate rainfall is anticipated in Johnson County during May, with a total of 84.6 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Johnson County during May?
The average wind speed in Johnson County during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Johnson County
Explore the daily rainfall trends and prepare for Johnson Countys May weather 💧
Typically, Johnson County has 8 rainy days in May with a total of 84.6 mm of rainfall.
UV exposure in Johnson County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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