Marion County (Indianapolis)
May
Weather in Marion County, Indiana for May 2026
Your guide to Marion County weather in May - trends and predictions
Frost Advisory - See hour by hour.
The forecast for the next days in Marion County predicts temperatures to be around 18 °F, close to the historical average.
In general, the average temperature in Marion County at the beginning of May is 16.1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22.3 °F by the end of May.
Marion County experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 200 mm.
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Temperatures
Rain 🌧️
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10
Dry days
21
Rainy days
0
Snow days
21°/13°
Temperatures
17 km/h
Avg max wind
73 %
Avg humidity
Marion County Weather May
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Temperatures trend during May in Marion County
See the weather trend as well as the moving average line
May weather in Marion County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Heavy rain at times | 19° /11° | 21.2 mm | 4 | |
| May 2 |  Sunny | 12° /2° | 0 mm | 6 | |
| May 3 |  Patchy rain possible | 17° /4° | 0.1 mm | 7 | |
| May 4 |  Moderate rain | 22° /11° | 10.3 mm | 4.9 | |
| May 5 | Moderate rain | 18° /10° | 17.1 mm | 2.4 | |
| May 6 | Moderate rain | 12° /8° | 12.6 mm | 0.1 | |
| May 7 | Patchy rain possible | 13° /6° | 0.6 mm | 2 | |
| May 8 | Patchy rain possible | 16° /8° | 1 mm | 3 | |
| May 9 | Sunny | 20° /7° | 0 mm | 4 | |
| May 10 | Patchy rain possible | 16° /10° | 3.9 mm | 3 | |
| May 11 | Sunny | 18° /8° | 0 mm | 4 | |
| May 12 | Patchy rain possible | 19° /12° | 0.4 mm | 3 | |
| May 13 | Sunny | 25° /14° | 0 mm | 5 | |
| May 14 |  Partly cloudy | 23° /16° | 0.1 mm | 5 | |
| May 15 | Patchy rain possible | 21° /13° | 0.5 mm | 4 | |
| May 16 | Light rain shower | 23° /15° | 13.1 mm | 5 | |
| May 17 | Partly cloudy | 22° /13° | 1.1 mm | 5 | |
| May 18 | Sunny | 22° /11° | 0.4 mm | 5 | |
| May 19 |  Moderate or heavy rain shower | 23° /13° | 4.1 mm | 5 | |
| May 20 | Sunny | 23° /13° | 15.4 mm | 6 | |
| May 21 | Sunny | 24° /13° | 0.8 mm | 6 | |
| May 22 | Partly cloudy | 21° /14° | 3.4 mm | 5 | |
| May 23 | Sunny | 23° /11° | 0.4 mm | 6 | |
| May 24 | Sunny | 25° /14° | 4.2 mm | 6 | |
| May 25 |  Overcast | 22° /12° | 0.1 mm | 5 | |
| May 26 | Sunny | 22° /11° | 12.1 mm | 5 | |
| May 27 | Partly cloudy | 20° /13° | 7.4 mm | 5 | |
| May 28 |  Cloudy | 21° /13° | 0.3 mm | 5 | |
| May 29 | Overcast | 22° /12° | 0 mm | 5 | |
| May 30 | Cloudy | 23° /14° | 0.7 mm | 5 | |
| May 31 | Overcast | 26° /15° | 2.5 mm | 6 | |
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Important Notice
Our weather forecast for Marion 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 Marion County forecast closer to your planned date for the most up-to-date weather information.
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Marion County in May - FAQ
What are the expected maximum and minimum temperatures in Marion County during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Marion County during May?
Significant rainfall exceeding 200 mm is expected in Marion County during May, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Marion County during May?
The average wind speed in Marion County during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Marion County
Explore the daily rainfall trends and prepare for Marion Countys May weather 💧
Typically, Marion County has 21 rainy days in May with a total of 200 mm of rainfall.
UV exposure in Marion County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is Marion County?Get accurate weather forecasts for Marion County, located at latitude 39.768 and longitude -86.158. Stay updated with localized weather information tailored for Marion County.
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