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
The arrival of May brings an increase in high-temperatures, moving from a mild 60.6°F (15.9°C) in April to an agreeable 71.2°F (21.8°C). The temperature in Valley Forge, Pennsylvania, lowers to an average of 53.1°F (11.7°C) during May nights.Humidity
In Valley Forge, the average relative humidity in May is 78%.Rainfall
In May, the rain falls for 15.3 days. Throughout May, 1.5" (38mm) of precipitation is accumulated. In Valley Forge, Pennsylvania, during the entire year, the rain falls for 132.3 days and collects up to 13.98" (355mm) of precipitation.Snowfall
In Valley Forge, snow does not fall in April through October.Daylight
The average length of the day in May in Valley Forge is 14h and 25min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:57 pm. On the last day of May, sunrise is at 5:34 am and sunset at 8:24 pm EDT.
Sunshine
In May, the average sunshine in Valley Forge is 8.3h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, an average UV index of 6 transforms into the following instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What is the temperature in May in Valley Forge?
What is the average humidity in May in Valley Forge?
How many days does it rain in May in Valley Forge?
When it does not snow in Valley Forge?
How many hours of daylight does Valley Forge have in May?
What time are sunrise and sunset in May in Valley Forge?
How long on average sun shines in May in Valley Forge?
What are the months with the highest UV index in Valley Forge?
What is the UV index intensity in May in Valley Forge?
Average temperature in May
Valley Forge, PA
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in May: 53.1°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in May
Valley Forge, PA
- Average pressure in May: 30.01"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
Valley Forge, PA
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in May
Valley Forge, PA
- Average humidity in May: 78%
The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are April and July (74%).
Average rainfall in May
Valley Forge, PA
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is August (1.77").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in May
Valley Forge, PA
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in May
Valley Forge, PA
- Average snowfall in May: 0"
The months with the highest snowfall are January and February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Valley Forge, PA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Valley Forge, PA
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Valley Forge, PA
- Average sunshine days in May: 13.1 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in May
Valley Forge, PA
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Valley Forge, PA
- Average cloud cover in May: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Valley Forge, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Valley Forge, Pennsylvania, USA
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