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
The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a mild 57.2°F (14°C) in April to an agreeable 68.9°F (20.5°C). During May, the temperature in Alcester tends to dip to an average of 51.3°F (10.7°C) at night.Humidity
In Alcester, the average relative humidity in May is 69%.Rainfall
In May, in Alcester, the rain falls for 14.3 days. Throughout May, 1.73" (44mm) of precipitation is accumulated. Throughout the year, in Alcester, there are 97.4 rainfall days, and 11.89" (302mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Alcester. During 0.2 snowfall days, in May, Alcester aggregates 0.16" (4mm) of snow. In Alcester, during the entire year, snow falls for 31.8 days and aggregates up to 7.76" (197mm) of snow.Daylight
In Alcester, the average length of the day in May is 14h and 41min.On the first day of May, sunrise is at 6:18 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:58 pm CDT.
Sunshine
The average sunshine in May in Alcester is 8.8h.UV index
In May, the average daily maximum UV index in Alcester, South Dakota, is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The average daily UV index of 5 in May transforms into the following instructions:
Guard yourself - Avoiding sunburn is suggested. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Alcester in May?
What is the average humidity in May in Alcester?
How many days does it rain in May in Alcester?
What is the last month it snows in Alcester?
What is the average length of the day in May in Alcester?
What time are sunrise and sunset in May in Alcester?
How many hours of sunshine does Alcester have in May?
How high is the UV index in May in Alcester?
Average temperature in May
Alcester, SD
- Average high temperature in May: 68.9°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 (25.2°F).
- Average low temperature in May: 51.3°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 (11.5°F).
Average pressure in May
Alcester, SD
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Alcester, SD
- Average wind speed in May: 9.5mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in May
Alcester, SD
- Average humidity in May: 69%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (66%).
Average rainfall in May
Alcester, SD
- Average rainfall in May: 1.73"
The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are February and November (0.31").
Average rainfall days in May
Alcester, SD
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in May
Alcester, SD
- Average snowfall in May: 0.16"
The month with the highest snowfall is March (1.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Alcester, SD
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Alcester, SD
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in May
Alcester, SD
- Average sunshine days in May: 14.7 days
The month with the most sunshine days is December (23.9 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in May
Alcester, 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, November and December (UV index 2).
Average cloud cover in May
Alcester, SD
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in May
Alcester, SD
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Alcester, South Dakota, USA
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