May weather forecastHammer, SD
May
Weather in May
The last month of the spring, May, is a refreshing month in Hammer, South Dakota, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 65.1°F (18.4°C).Temperature
In Hammer, stepping into May brings a temperature increase, moving up from April's fresh 51.8°F (11°C) to an enjoyable 65.1°F (18.4°C). In the month of May, the nighttime temperature in Hammer dips to a steady average of 48°F (8.9°C).Humidity
In May, the average relative humidity in Hammer is 68%.Rainfall
In Hammer, in May, during 14.8 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. In Hammer, during the entire year, the rain falls for 107.9 days and collects up to 20.63" (524mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Hammer aggregates 0.08" (2mm) of snow. Throughout the year, there are 53.2 snowfall days, and 20.12" (511mm) of snow is accumulated.Daylight
In Hammer, the average length of the day in May is 14h and 58min.On the first day of May, sunrise is at 6:13 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 9:10 pm CDT.
Sunshine
The average sunshine in May is 8.8h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. When the Sun is at its strongest around midday, find shade and limit exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hammer, SD
- Average high temperature in May: 65.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (19°F).
- Average low temperature in May: 48°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in May
Hammer, 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 (29.86"Hg).
Average wind speed in May
Hammer, SD
- Average wind speed in May: 9.9mph
The windiest months (with the highest average wind speed) are April and October (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).
Average humidity in May
Hammer, SD
- Average humidity in May: 68%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is September (65%).
Average rainfall in May
Hammer, SD
- Average rainfall in May: 2.48"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in May
Hammer, SD
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (1.6 days).
Average snowfall in May
Hammer, SD
- Average snowfall in May: 0.08"
The month with the highest snowfall is December (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Hammer, SD
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is December (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Hammer, SD
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Hammer, SD
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in May
Hammer, SD
- 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
Hammer, SD
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 25).
Average visibility in May
Hammer, 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).
