May weather forecastGregory, SD
May
Weather in May
The last month of the spring, May, is a comfortable month in Gregory, South Dakota, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 67.8°F (19.9°C).Temperature
Gregory's May weather shows an increase in high-temperatures, moving from April's mild 56.7°F (13.7°C) to a comfortable 67.8°F (19.9°C). Gregory witnesses a consistent average low-temperature of 49.6°F (9.8°C) throughout May.Humidity
In Gregory, the average relative humidity in May is 65%.Rainfall
In May, the rain falls for 14.3 days. Throughout May, 2.6" (66mm) of precipitation is accumulated. In Gregory, during the entire year, the rain falls for 103.9 days and collects up to 16.85" (428mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Gregory aggregates 0.04" (1mm) of snow. Throughout the year, there are 39.7 snowfall days, and 14.45" (367mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 42min.On the first day of the month, sunrise is at 6:29 am and sunset at 8:39 pm. On the last day of May, sunrise is at 6:00 am and sunset at 9:10 pm CDT.
Sunshine
In Gregory, the average sunshine in May is 9.4h.UV index
In May, the average daily maximum UV index 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 ordinary person.Note: The daily high UV index of 5 during May translates into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Gregory, SD
- Average high temperature in May: 67.8°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in May
Gregory, SD
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Gregory, SD
- Average wind speed in May: 11mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in May
Gregory, SD
- Average humidity in May: 65%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (57%).
Average rainfall in May
Gregory, SD
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in May
Gregory, SD
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.7 days).
Average snowfall in May
Gregory, SD
- Average snowfall in May: 0.04"
The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Gregory, SD
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Gregory, SD
- Average daylight in May: 14h and 42min
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 0min).
- Average sunshine in May: 9h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in May
Gregory, SD
- Average sunshine days in May: 14.5 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in May
Gregory, SD
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Gregory, SD
- Average cloud cover in May: 36
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in May
Gregory, 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).
