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
With the beginning of May, Chatham's average high-temperature sees an increase, transitioning from an enjoyable 61.2°F (16.2°C) in April to a pleasant 70.9°F (21.6°C). During May, the average low-temperature is a fresh 53.6°F (12°C).Humidity
The months with the highest humidity are February, May, September, October and December, with an average relative humidity of 79%.Rainfall
In Chatham, in May, during 13.9 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. In Chatham, during the entire year, the rain falls for 126.3 days and collects up to 14.25" (362mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Chatham. May is the last month it regularly snows in Chatham. During 0.1 snowfall days, in May, Chatham aggregates 0.12" (3mm) of snow. Throughout the year, in Chatham, there are 15.4 snowfall days, and 4.33" (110mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 23min.On the first day of May, sunrise is at 6:02 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:25 pm EDT.
Sunshine
The average sunshine in May is 8.5h.UV index
The months with the highest UV index in Chatham are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.Note: An average UV index of 6 in May transforms into this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What are May temperatures in Chatham?
What is the most humid month in Chatham?
What is the average humidity in May in Chatham?
How much does it rain in Chatham in May?
What is the last month it snows in Chatham?
What is the average length of the day in May in Chatham?
When are sunrise and sunset in May in Chatham?
How many hours of sunshine does Chatham have in May?
What are the months with the highest UV index in Chatham?
What is the UV index reading in May in Chatham?
Average temperature in May
Chatham, PA
- Average high temperature in May: 70.9°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in May: 53.6°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in May
Chatham, PA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Chatham, PA
- Average wind speed in May: 6.7mph
The windiest months (with the highest average wind speed) are February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in May
Chatham, PA
- Average humidity in May: 79%
The months with the highest relative humidity are February, May, September, October and December (79%).
The months with the lowest relative humidity are March and April (75%).
Average rainfall in May
Chatham, PA
- Average rainfall in May: 1.42"
The wettest month (with the highest rainfall) is August (1.93").
The driest months (with the least rainfall) are January, September and November (0.87").
Average rainfall days in May
Chatham, PA
- Average rainfall days in May: 13.9 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in May
Chatham, PA
- Average snowfall in May: 0.12"
The month with the highest snowfall is March (1.26").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Chatham, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Chatham, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Chatham, PA
- Average sunshine days in May: 14.4 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in May
Chatham, 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, November and December (UV index 2).
Average cloud cover in May
Chatham, PA
- Average cloud cover in May: 46
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in May
Chatham, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Chatham, Pennsylvania, USA
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