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 fresh 51.1°F (10.6°C) in April to a refreshing 64°F (17.8°C). Webster's nighttime temperature during May is consistently averaged at a frosty 46.6°F (8.1°C).Humidity
In Webster, the average relative humidity in May is 70%.Rainfall
In Webster, South Dakota, during May, the rain falls for 16.5 days and regularly aggregates up to 2.72" (69mm) of precipitation. In Webster, during the entire year, the rain falls for 112.9 days and collects up to 22.09" (561mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.8 snowfall days, in May, Webster aggregates 0.12" (3mm) of snow. Throughout the year, there are 68.4 snowfall days, and 23.74" (603mm) of snow is accumulated.Daylight
In May, the average length of the day in Webster is 14h and 55min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:37 pm. On the last day of May, sunrise is at 5:45 am and sunset at 9:10 pm CDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during May leads to these instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Webster?
What is the average humidity in May in Webster?
How much does it rain in Webster in May?
What is the last month it snows in Webster?
How many hours of daylight does Webster have in May?
When is the sunrise / sunset in May in Webster?
How long on average sun shines in May in Webster?
How high is the UV index in May in Webster?
Average temperature in May
Webster, SD
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (18.9°F).
- Average low temperature in May: 46.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (5°F).
Average pressure in May
Webster, SD
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in May
Webster, SD
- Average wind speed in May: 10.5mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is July (8.7mph).
Average humidity in May
Webster, SD
- Average humidity in May: 70%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is September (66%).
Average rainfall in May
Webster, SD
- Average rainfall in May: 2.72"
The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in May
Webster, SD
- Average rainfall days in May: 16.5 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in May
Webster, SD
- Average snowfall in May: 0.12"
The month with the highest snowfall is December (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Webster, SD
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Webster, SD
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in May
Webster, SD
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in May
Webster, SD
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in May
Webster, SD
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in May
Webster, SD
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Webster, South Dakota, USA
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