Dayton (OH)
May
Weather in Dayton, Ohio for May 2026
Your guide to Dayton weather in May - trends and predictions
In general, the average temperature in Dayton at the beginning of May is 20.1 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 20 °F by the end of May.
Dayton experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 259 mm.
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Temperatures
Rain 🌧️
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7
Dry days
24
Rainy days
0
Snow days
20°/12°
Temperatures
19 km/h
Avg max wind
79 %
Avg humidity
Dayton Weather May
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Temperatures trend during May in Dayton
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May weather in Dayton day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Partly cloudy | 24° /13° | 0 mm | 6 | |
| May 2 |  Light rain shower | 24° /14° | 0.6 mm | 6 | |
| May 3 | Light rain shower | 17° /12° | 63.7 mm | 4 | |
| May 4 | Patchy rain possible | 20° /11° | 1.6 mm | 5 | |
| May 5 | Light rain shower | 16° /11° | 20.9 mm | 4 | |
| May 6 | Patchy rain possible | 18° /11° | 11.8 mm | 5 | |
| May 7 |  Moderate or heavy rain shower | 22° /12° | 5.5 mm | 5 | |
| May 8 |  Fog | 21° /12° | 2.2 mm | 5 | |
| May 9 | Light rain shower | 19° /8° | 6.4 mm | 5 | |
| May 10 |  Light drizzle | 18° /7° | 1 mm | 4 | |
| May 11 | Patchy light rain | 21° /9° | 1.3 mm | 5 | |
| May 12 | Partly cloudy | 20° /9° | 0 mm | 5 | |
| May 13 | Patchy rain possible | 22° /14° | 3.3 mm | 5 | |
| May 14 | Light rain shower | 20° /15° | 5.1 mm | 5 | |
| May 15 | Light rain | 23° /14° | 3 mm | 5 | |
| May 16 | Light rain shower | 26° /15° | 5.1 mm | 6 | |
| May 17 | Light rain shower | 22° /14° | 4.2 mm | 5 | |
| May 18 | Patchy rain possible | 19° /13° | 0.4 mm | 4 | |
| May 19 | Partly cloudy | 21° /14° | 2.5 mm | 5 | |
| May 20 |  Sunny | 21° /13° | 47.2 mm | 6 | |
| May 21 | Patchy rain possible | 23° /15° | 24.3 mm | 5 | |
| May 22 | Moderate or heavy rain shower | 19° /13° | 6.5 mm | 5 | |
| May 23 |  Moderate or heavy rain with thunder | 19° /9° | 3.9 mm | 5 | |
| May 24 |  Thundery outbreaks possible | 23° /11° | 0 mm | 5 | |
| May 25 | Moderate or heavy rain with thunder | 23° /13° | 2.1 mm | 5 | |
| May 26 |  Patchy light rain with thunder | 23° /10° | 10.2 mm | 5 | |
| May 27 | Light rain shower | 18° /13° | 19.1 mm | 4 | |
| May 28 | Patchy rain possible | 18° /12° | 0.3 mm | 5 | |
| May 29 | Patchy rain possible | 18° /11° | 0.5 mm | 4 | |
| May 30 | Sunny | 18° /10° | 4.4 mm | 5 | |
| May 31 | Sunny | 22° /10° | 2 mm | 6 | |
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Important Notice
Our weather forecast for Dayton 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 Dayton forecast closer to your planned date for the most up-to-date weather information.
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Dayton in May - FAQ
What are the expected maximum and minimum temperatures in Dayton during May?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Dayton during May?
Significant rainfall exceeding 259 mm is expected in Dayton during May, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Dayton during May?
The average wind speed in Dayton during May is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Dayton
Explore the daily rainfall trends and prepare for Daytons May weather 💧
UV exposure in Dayton during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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