Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Seneca sees an increase in the average high-temperature with the arrival of May, moving from April's mild 56.1°F (13.4°C) to a pleasant 68.7°F (20.4°C). Throughout May, the temperature falls to an average low of 47.7°F (8.7°C).Humidity
With an average relative humidity of 78%, May is the least humid month.Rainfall
In May, the rain falls for 19.3 days. Throughout May, 3.35" (85mm) of precipitation is accumulated. In Seneca, during the entire year, the rain falls for 177.7 days and collects up to 35.67" (906mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.8 snowfall days, in May, Seneca aggregates 0.55" (14mm) of snow. In Seneca, during the entire year, snow falls for 86.5 days and aggregates up to 43.07" (1094mm) of snow.Daylight
In Seneca, Pennsylvania, the average length of the day in May is 14h and 32min.On the first day of the month, sunrise is at 6:14 am and sunset at 8:16 pm. On the last day of May, sunrise is at 5:47 am and sunset at 8:45 pm EDT.
Sunshine
In Seneca, the average sunshine in May is 8.4h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the least humid month?
What is the average humidity in May in Seneca?
How much does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
When is the highest UV index in Seneca?
What is the UV index intensity in May?
Average temperature in May
Seneca, PA
- Average high temperature in May: 68.7°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in May: 47.7°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in May
Seneca, PA
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Seneca, PA
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in May
Seneca, PA
- Average humidity in May: 78%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (78%).
Average rainfall in May
Seneca, PA
- Average rainfall in May: 3.35"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is November (2.36").
Average rainfall days in May
Seneca, PA
- Average rainfall days in May: 19.3 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Seneca, PA
- Average snowfall in May: 0.55"
The month with the highest snowfall is January (10.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Seneca, PA
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Seneca, PA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in May
Seneca, PA
- Average sunshine days in May: 9.3 days
The month with the most sunshine days is September (12.1 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in May
Seneca, PA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Seneca, PA
- Average cloud cover in May: 48
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in May
Seneca, PA
- Average visibility in May: 5mi
The months with the highest visibility are March, April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are January, February, September and December (4mi).
Seneca, Pennsylvania, USA
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