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 onset of May, Saint Peters's weather sees a temperature rise, transitioning from a refreshing 59.7°F (15.4°C) in April to an agreeable 70.5°F (21.4°C). The low-temperature average for Saint Peters during May stands at a cool 51.8°F (11°C).Humidity
The average relative humidity in May is 80%.Rainfall
In Saint Peters, during May, the rain falls for 17.4 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, in Saint Peters, there are 162.2 rainfall days, and 27.87" (708mm) of precipitation is accumulated.Snowfall
Months with snowfall in Saint Peters are January through May, October through December. May is the last month it regularly snows in Saint Peters. During 0.2 snowfall days, in May, Saint Peters aggregates 0.28" (7mm) of snow. In Saint Peters, during the entire year, snow falls for 22.9 days and aggregates up to 10.35" (263mm) of snow.Daylight
The average length of the day in May in Saint Peters is 14h and 25min.On the first day of May in Saint Peters, sunrise is at 6:01 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:25 pm EDT.
Sunshine
In May, the average sunshine is 8.4h.UV index
The months with the highest UV index in Saint Peters are May through July, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 6 in May translates into the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What is the temperature in May in Saint Peters?
What is the average humidity in May in Saint Peters?
How much does it rain in Saint Peters in May?
What is the last month it snows in Saint Peters?
How many hours of daylight does Saint Peters have in May?
When is the sunrise / sunset in May in Saint Peters?
How long on average sun shines in May in Saint Peters?
What is the month with the highest UV index in Saint Peters?
How high is the UV index in May in Saint Peters?
Average temperature in May
Saint Peters, PA
- Average high temperature in May: 70.5°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in May: 51.8°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in May
Saint Peters, 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
Saint Peters, PA
- Average wind speed in May: 6.3mph
The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in May
Saint Peters, PA
- Average humidity in May: 80%
The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in May
Saint Peters, PA
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in May
Saint Peters, PA
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in May
Saint Peters, PA
- Average snowfall in May: 0.28"
The month with the highest snowfall is March (3.03").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Saint Peters, PA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Saint Peters, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Saint Peters, PA
- Average sunshine days in May: 11.6 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in May
Saint Peters, 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, March, November and December (UV index 2).
Average cloud cover in May
Saint Peters, PA
- Average cloud cover in May: 47
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Saint Peters, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are February, May, September and October (5mi).
Saint Peters, Pennsylvania, USA
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