Chambersburg Weather in May
What's the weather like in Chambersburg (Pennsylvania) in May 2025?
The climate in Chambersburg during May can be summarized as mild and a little damp.
May is in the spring in Chambersburg and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 9°C (49°F) is normal.
| Daytime temperature | 22.2°C 71.9°F |
|---|---|
| Nightly temperature | 9.3°C 48.7°F |
| Average temperature | 15.7°C 60.3°F |
| Daily sunshine | 8.7 hrs |
| Avg rainfall | 98 mm 3.9 ins |
| Rainy days | 13 days |
| Sea temperature | 10.3°C 50.5°F |
| Humidity | 67% |
| Windspeed | 14kph 9 mph |
On average May is the 2nd wettest month of the year in Chambersburg with around 98mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.7 hours of sunshine per day.
May temperatures in Chambersburg
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Chambersburg in May 2025.
Other monthly averages
Chambersburg weather stats
| Hottest month: | July | 28.7°C 83.7°F |
|---|---|---|
| Driest month: | February | 70mm 2.8ins |
| Sunniest month: | July | 9.9hrs |
| Coldest month: | January | 1.7°C 35.1°F |
| Wettest month: | June | 101mm 4ins |
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