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 average high-temperature increases from a refreshing 60.3°F (15.7°C) in April to a pleasant 71.2°F (21.8°C). Despite high daytime temperatures, the average temperature lowers to a chilly 49.6°F (9.8°C) during May nights.Humidity
In Keyser, the average relative humidity in May is 78%.Rainfall
May is the month with the most rainfall. Rain falls for 17.8 days and accumulates 3.03" (77mm) of precipitation.Snowfall
In Keyser, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 22min.On the first day of May, sunrise is at 6:15 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:36 pm EDT.
Sunshine
The average sunshine in May is 8.9h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
What is the rainiest month?
How much does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does Keyser have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Keyser have in May?
What is the UV index reading in May?
Average temperature in May
Keyser, WV
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in May
Keyser, WV
- 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
Keyser, WV
- Average wind speed in May: 5.8mph
The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in May
Keyser, WV
- Average humidity in May: 78%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are April, June and July (75%).
Average rainfall in May
Keyser, WV
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in May
Keyser, WV
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in May
Keyser, WV
- Average snowfall in May: 0"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Keyser, WV
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10.3 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
Keyser, WV
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in May
Keyser, WV
- Average sunshine days in May: 10.3 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in May
Keyser, WV
- 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
Keyser, WV
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in May
Keyser, WV
- Average visibility in May: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Keyser, West Virginia, USA
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