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
In May, the meteorological conditions change with the average high-temperature moving from a moderate 58.6°F (14.8°C) in April to a pleasant 70.2°F (21.2°C). Throughout May, the nighttime temperature in Belleville averages to a chilly 49.3°F (9.6°C).Humidity
The average relative humidity in May in Belleville is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 19.1 days and typically aggregates up to 3.31" (84mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Belleville. May is the last month it regularly snows in Belleville. During 0.2 snowfall days, in May, Belleville aggregates 0.16" (4mm) of snow. In Belleville, during the entire year, snow falls for 35.2 days and aggregates up to 16.42" (417mm) of snow.Daylight
The average length of the day in May is 14h and 28min.On the first day of the month, sunrise is at 6:08 am and sunset at 8:07 pm. On the last day of May, in Belleville, sunrise is at 5:42 am and sunset at 8:35 pm EDT.
Sunshine
The average sunshine in May is 8.3h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 5 in May translates into these instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What is the usual temperature for Belleville in May?
What is the average humidity in May in Belleville?
What is the rainiest month in Belleville?
How many days does it rain in May in Belleville?
What is the last month it snows in Belleville?
What is the average length of the day in May in Belleville?
When are sunrise and sunset in May in Belleville?
How many hours of sunshine does Belleville have in May?
How high is the UV index in May in Belleville?
Average temperature in May
Belleville, PA
- Average high temperature in May: 70.2°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in May: 49.3°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in May
Belleville, 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 (29.95"Hg).
Average wind speed in May
Belleville, PA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in May
Belleville, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is July (75%).
Average rainfall in May
Belleville, PA
- Average rainfall in May: 3.31"
The wettest month (with the highest rainfall) is May (3.31").
The driest months (with the least rainfall) are January and November (1.85").
Average rainfall days in May
Belleville, PA
- Average rainfall days in May: 19.1 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in May
Belleville, PA
- Average snowfall in May: 0.16"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Belleville, PA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Belleville, PA
- Average daylight in May: 14h and 3min
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 18min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in May
Belleville, PA
- Average sunshine days in May: 10.4 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in May
Belleville, PA
- Average UV index in May: 5
The month with the highest UV index is June (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
Belleville, PA
- Average cloud cover in May: 48
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in May
Belleville, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Belleville, Pennsylvania, USA
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