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
As Westport welcomes May, the average high-temperature sees a rise, transitioning from a fresh 54.1°F (12.3°C) in April to an enjoyable 66.7°F (19.3°C). During the month of May, Westport experiences a steady low-temperature average of 48.2°F (9°C).Humidity
In May, the average relative humidity is 66%.Rainfall
In Westport, South Dakota, in May, it is raining for 13 days, with typically 2.32" (59mm) of accumulated precipitation. In Westport, during the entire year, the rain falls for 97.2 days and collects up to 18.35" (466mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Westport. May is the last month it regularly snows. During 0.3 snowfall days, in May, Westport aggregates 0.08" (2mm) of snow. In Westport, South Dakota, during the entire year, snow falls for 54.8 days and aggregates up to 19.13" (486mm) of snow.Daylight
The average length of the day in May is 14h and 56min.On the first day of May, sunrise is at 6:20 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 9:15 pm CDT.
Sunshine
In Westport, the average sunshine in May is 9h.UV index
The average daily maximum UV index in May in Westport, South Dakota, is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In May, a daily UV index of 5 turns into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Westport?
What is the average humidity in May in Westport?
How much does it rain in Westport in May?
What is the last month it snows in Westport?
How many hours of daylight does Westport have in May?
When are sunrise and sunset in May in Westport?
How long on average sun shines in May in Westport?
What is the UV index reading in May in Westport?
Average temperature in May
Westport, SD
- Average high temperature in May: 66.7°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in May: 48.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in May
Westport, SD
- Average pressure in May: 29.92"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
Westport, SD
- Average wind speed in May: 9.7mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in May
Westport, SD
- Average humidity in May: 66%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).
Average rainfall in May
Westport, SD
- Average rainfall in May: 2.32"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in May
Westport, SD
- Average rainfall days in May: 13 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).
Average snowfall in May
Westport, SD
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Westport, SD
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Westport, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Westport, SD
- Average sunshine days in May: 15.7 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).
Average UV index in May
Westport, SD
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in May
Westport, SD
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in May
Westport, SD
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Westport, South Dakota, USA
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