May weather forecastSistersville, WV
May
Weather in May
The last month of the spring, May, is a warm month in Sistersville, West Virginia, with temperature in the range of an average high of 73.4°F (23°C) and an average low of 52.2°F (11.2°C).Temperature
The rise of average high-temperatures is seen in May, with an increase from an enjoyable 61.9°F (16.6°C) in April to a warm 73.4°F (23°C). The temperature lowers to an average of 52.2°F (11.2°C) during May nights.Humidity
In Sistersville, the average relative humidity in May is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 19.6 days and typically aggregates up to 2.91" (74mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May in Sistersville is 14h and 22min.On the first day of the month, sunrise is at 6:23 am and sunset at 8:18 pm. On the last day of May, sunrise is at 5:58 am and sunset at 8:45 pm EDT.
Sunshine
The average sunshine in May is 8.6h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 5 during May leads to these advisories:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Sistersville, WV
- Average high temperature in May: 73.4°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in May: 52.2°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in May
Sistersville, WV
- Average pressure in May: 30"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
Sistersville, WV
- Average wind speed in May: 5.4mph
The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in May
Sistersville, WV
- Average humidity in May: 79%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (77%).
Average rainfall in May
Sistersville, WV
- Average rainfall in May: 2.91"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in May
Sistersville, WV
- Average rainfall days in May: 19.6 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (10.2 days).
Average snowfall in May
Sistersville, WV
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Sistersville, WV
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Sistersville, WV
- Average daylight in May: 14h and 24min
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 36min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in May
Sistersville, WV
- Average sunshine days in May: 8.8 days
The month with the most sunshine days is November (16.9 days).
The months with the least sunshine days are January and February (8.7 days).
Average UV index in May
Sistersville, WV
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Sistersville, WV
- Average cloud cover in May: 47
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Sistersville, WV
- Average visibility in May: 5mi
The month with the highest visibility is November (6mi).
The month with the lowest visibility is January (4mi).
