Lancaster County (Lancaster)
May
Weather in Lancaster County, Pennsylvania for May 2027
Your guide to Lancaster County weather in May - trends and predictions
In general, the average temperature in Lancaster County at the beginning of May is 20.7 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 21.1 °C by the end of May.
The climate of Lancaster County in May is notably wet, with an average of 13 rainy days, and a total of 203.9 mm of precipitation.
Is May a good time to visit Lancaster County? check out the best time to travel to Lancaster County page.
✨ Is May a good time to visit Lancaster County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
18
Dry days
13
Rainy days
0
Snow days
20°/11°
Temperatures
20 km/h
Avg max wind
77 %
Avg humidity
Lancaster County Weather May
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Temperatures trend during May in Lancaster County
See the weather trend as well as the moving average line
May weather in Lancaster County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Cloudy | 20° /6° | 0.4 mm | 7 | |
| May 2 |  Overcast | 20° /10° | 0.3 mm | 8 | |
| May 3 |  Moderate or heavy rain shower | 21° /10° | 8.8 mm | 8 | |
| May 4 |  Light rain | 21° /12° | 4.7 mm | 7 | |
| May 5 | Moderate or heavy rain shower | 23° /15° | 7.1 mm | 8 | |
| May 6 | Moderate or heavy rain shower | 21° /13° | 9.1 mm | 4 | |
| May 7 | Cloudy | 21° /10° | 0.6 mm | 7 | |
| May 8 | Light rain | 20° /8° | 3.7 mm | 7 | |
| May 9 | Moderate or heavy rain shower | 15° /9° | 8.8 mm | 5 | |
| May 10 | Light rain | 22° /8° | 3.4 mm | 8 | |
| May 11 |  Sunny | 19° /9° | 0 mm | 6 | |
| May 12 | Cloudy | 21° /7° | 0.1 mm | 8 | |
| May 13 |  Moderate rain | 20° /13° | 12.4 mm | 5 | |
| May 14 | Light rain | 16° /11° | 2.5 mm | 5 | |
| May 15 |  Patchy rain possible | 21° /12° | 1.1 mm | 4 | |
| May 16 | Patchy rain possible | 26° /12° | 2.2 mm | 8 | |
| May 17 | Overcast | 28° /17° | 0 mm | 7 | |
| May 18 | Patchy rain possible | 26° /15° | 0.2 mm | 8 | |
| May 19 |  Partly cloudy | 27° /16° | 0 mm | 8 | |
| May 20 | Light rain | 24° /13° | 5.3 mm | 6 | |
| May 21 |  Heavy rain at times | 13° /10° | 16 mm | 3 | |
| May 22 | Moderate or heavy rain shower | 17° /10° | 8.5 mm | 6 | |
| May 23 | Moderate rain | 13° /8° | 16.3 mm | 3 | |
| May 24 | Light rain | 16° /9° | 7.1 mm | 3 | |
| May 25 | Light rain | 21° /9° | 2.6 mm | 4 | |
| May 26 | Partly cloudy | 23° /11° | 0 mm | 8 | |
| May 27 | Light rain | 23° /13° | 2.8 mm | 5 | |
| May 28 |  Heavy rain | 17° /11° | 26.2 mm | 7 | |
| May 29 |  Fog | 23° /10° | 0 mm | 8 | |
| May 30 | Heavy rain | 21° /13° | 53.9 mm | 7 | |
| May 31 | Partly cloudy | 23° /9° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Lancaster 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 Lancaster County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Lancaster County in May - FAQ
What are the expected maximum and minimum temperatures in Lancaster County during May?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Lancaster County during May?
Significant rainfall exceeding 203.9 mm is expected in Lancaster County during May, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Lancaster County during May?
The average wind speed in Lancaster County during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Lancaster County
Explore the daily rainfall trends and prepare for Lancaster Countys May weather 💧
Typically, Lancaster County has 13 rainy days in May with a total of 203.9 mm of rainfall.
UV exposure in Lancaster County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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