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
May sees a temperature increase, moving from an enjoyable 61.3°F (16.3°C) in April to an agreeable 71.2°F (21.8°C). Williamson records an average nighttime low-temperature of 51.6°F (10.9°C) throughout May.Humidity
February, May, October and December, with an average relative humidity of 79%, are the most humid months.Rainfall
May is the month with the most rainfall in Williamson. Rain falls for 18.8 days and accumulates 3.15" (80mm) of precipitation.Snowfall
In Williamson, Pennsylvania, snow does not fall in May through September.Daylight
The average length of the day in May in Williamson is 14h and 23min.On the first day of May in Williamson, Pennsylvania, sunrise is at 6:10 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:33 pm EDT.
Sunshine
In May, the average sunshine in Williamson is 8.6h.UV index
May through July, with an average maximum UV index of 6, are months with the highest UV index in Williamson. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 6 during May translates into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What is the average May temperature in Williamson?
What are the most humid months in Williamson?
What is the average humidity in May in Williamson?
What is the wettest month in Williamson?
How many days does it rain in May in Williamson?
When it does not snow in Williamson?
Does it snow in Williamson in May?
What is the average length of the day in May in Williamson?
What time are sunrise and sunset in May in Williamson?
How long on average sun shines in May in Williamson?
When is the highest UV index in Williamson?
What is the UV index intensity in May in Williamson?
Average temperature in May
Williamson, PA
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in May: 51.6°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in May
Williamson, PA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Williamson, PA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in May
Williamson, PA
- Average humidity in May: 79%
The months with the highest relative humidity are February, May, October and December (79%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in May
Williamson, PA
- Average rainfall in May: 3.15"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in May
Williamson, PA
- Average rainfall days in May: 18.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (9 days).
Average snowfall in May
Williamson, PA
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Williamson, PA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Williamson, 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 4min
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
Williamson, PA
- Average sunshine days in May: 10.4 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in May
Williamson, PA
- Average UV index in May: 6
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Williamson, PA
- Average cloud cover in May: 46
The months with the most cloud cover are January, February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Williamson, PA
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Williamson, Pennsylvania, USA
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