May weather forecastMandan, ND
May
Weather in May
May in Mandan witnesses a major departure from the cold, snowy months, moving towards a much warmer and pleasant atmosphere. From 51.4°F (10.8°C) in April, the thermometers now show peaks of 64.9°F (18.3°C). May is also when you can expect a rise in rainfall, indicative of the spring season. With almost 15 hours of daylight, outdoor activities become significantly more enticing, despite the occasional gust of wind.Temperature
May's onset brings a temperature rise, moving from a cool 51.4°F (10.8°C) in April to a comfortable 64.9°F (18.3°C). Mandan, during May nights, observes an average temperature of 46.4°F (8°C).Humidity
In May, the average relative humidity is 62%.Rainfall
In Mandan, in May, during 12.7 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. In Mandan, during the entire year, the rain falls for 94.3 days and collects up to 14.29" (363mm) 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, Mandan aggregates 0.16" (4mm) of snow. In Mandan, during the entire year, snow falls for 58.6 days and aggregates up to 18.27" (464mm) of snow.Daylight
In Mandan, the average length of the day in May is 15h and 4min.On the first day of May, sunrise is at 6:26 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 9:29 pm CDT.
Sunshine
In Mandan, the average sunshine in May is 9.5h.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 exposure to the Sun's UV radiation for average individuals.Note: In May, a regular UV index of 4 translates into these guidelines:
Prioritize safety - Recommendations to avert sunburn are shared. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Mandan, ND
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in May: 46.4°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 (6.3°F).
Average pressure in May
Mandan, ND
- 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
Mandan, ND
- Average wind speed in May: 10.1mph
The windiest months (with the highest average wind speed) are April and October (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in May
Mandan, ND
- Average humidity in May: 62%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (55%).
Average rainfall in May
Mandan, ND
- Average rainfall in May: 1.93"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in May
Mandan, ND
- Average rainfall days in May: 12.7 days
The month with the highest number of rainy days is June (13.1 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in May
Mandan, ND
- Average snowfall in May: 0.16"
The month with the highest snowfall is December (3.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Mandan, ND
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is December (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Mandan, ND
- Average daylight in May: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 9h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Mandan, ND
- Average sunshine days in May: 15.5 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (14.6 days).
Average UV index in May
Mandan, ND
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in May
Mandan, ND
- Average cloud cover in May: 37
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in May
Mandan, ND
- 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).
