Jefferson County (Louisville)
May
Weather in Jefferson County, Kentucky for May 2026
Your guide to Jefferson County weather in May - trends and predictions
Until now, May 2026 in Jefferson County is cooler than usual, with temperatures averaging 18.7 °F, this is -2.4 °F below the typical seasonal average.
The forecast for the coming days of May 2026 predicts a temperature of 26.6 °F , which is warmer than usual.
In general, the average temperature in Jefferson County at the beginning of May is 19.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 23.4 °F by the end of May.
Jefferson County experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 242.8 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
7
Dry days
24
Rainy days
0
Snow days
23°/13°
Temperatures
16 km/h
Avg max wind
77 %
Avg humidity
Jefferson County Weather May
Move between months or click on a day
Temperatures trend during May in Jefferson County
See the weather trend as well as the moving average line
May weather in Jefferson County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Patchy rain possible | 20° /10° | 6.4 mm | 6 | |
| May 2 | Patchy rain possible | 20° /10° | 2.8 mm | 6 | |
| May 3 |  Cloudy | 19° /9° | 15 mm | 6 | |
| May 4 | Cloudy | 21° /10° | 2.2 mm | 5 | |
| May 5 |  Moderate or heavy rain shower | 19° /11° | 6.9 mm | 4 | |
| May 6 | Moderate or heavy rain shower | 18° /11° | 5.3 mm | 3 | |
| May 7 | Moderate or heavy rain shower | 22° /12° | 3 mm | 7 | |
| May 8 | Patchy rain possible | 24° /13° | 5.8 mm | 7 | |
| May 9 |  Overcast | 23° /12° | 6.9 mm | 6 | |
| May 10 |  Sunny | 21° /9° | 0.1 mm | 6 | |
| May 11 |  Heavy rain at times | 23° /10° | 0.5 mm | 7 | |
| May 12 | Patchy rain possible | 23° /12° | 2.9 mm | 7 | |
| May 13 | Patchy rain possible | 23° /14° | 2.3 mm | 6 | |
| May 14 | Sunny | 21° /8° | 0 mm | 7.9 | |
| May 15 | Sunny | 25° /9° | 0 mm | 0.4 | |
| May 16 |  Moderate rain | 28° /17° | 8.2 mm | 5 | |
| May 17 | Moderate rain | 30° /17° | 7.7 mm | 5 | |
| May 18 | Sunny | 30° /18° | 0 mm | 6 | |
| May 19 | Patchy rain possible | 27° /18° | 1.6 mm | 5 | |
| May 20 | Patchy rain possible | 21° /14° | 2.1 mm | 4 | |
| May 21 | Sunny | 26° /11° | 0 mm | 5 | |
| May 22 | Sunny | 28° /13° | 0 mm | 5 | |
| May 23 | Sunny | 32° /17° | 0 mm | 6 | |
| May 24 | Sunny | 32° /20° | 0 mm | 7 | |
| May 25 | Moderate rain | 31° /18° | 6.3 mm | 5 | |
| May 26 | Patchy rain possible | 21° /15° | 2.5 mm | 4 | |
| May 27 |  Partly cloudy | 20° /12° | 0 mm | 5 | |
| May 28 | Patchy rain possible | 20° /13° | 0.6 mm | 5 | |
| May 29 | Patchy rain possible | 23° /13° | 0.1 mm | 5 | |
| May 30 | Moderate or heavy rain shower | 23° /12° | 11 mm | 5 | |
| May 31 | Overcast | 26° /13° | 0.4 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Jefferson 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 Jefferson County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Jefferson County in May - FAQ
What are the expected maximum and minimum temperatures in Jefferson County during May?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Jefferson County during May?
Significant rainfall exceeding 242.8 mm is expected in Jefferson County during May, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Jefferson County during May?
The average wind speed in Jefferson County during May is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Jefferson County
Explore the daily rainfall trends and prepare for Jefferson Countys May weather 💧
Typically, Jefferson County has 24 rainy days in May with a total of 242.8 mm of rainfall.
UV exposure in Jefferson County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Top locations in Jefferson County
Select a location for an accurate weather forecast
More Locations Quick links
More Jefferson County weather pages
You are here
Where is Jefferson County?Get accurate weather forecasts for Jefferson County, located at latitude 38.254 and longitude -85.759. Stay updated with localized weather information tailored for Jefferson County.
Found a mistake?
We appreciate your attention to details. Tell us here.