May weather forecastVandalia, MT
May
Weather in May
The last month of the spring, May, is an enjoyable month in Vandalia, Montana, with an average temperature fluctuating between 46.9°F (8.3°C) and 64.6°F (18.1°C).Temperature
In May, the average high-temperature increases from a cool 52.2°F (11.2°C) in April to an enjoyable 64.6°F (18.1°C). An average low-temperature of 46.9°F (8.3°C) marks the month of May in Vandalia.Humidity
The average relative humidity in May in Vandalia, Montana, is 52%.Rainfall
In Vandalia, in May, during 13.8 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Vandalia, during the entire year, the rain falls for 90.8 days and collects up to 11.1" (282mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Vandalia. May is the last month it regularly snows in Vandalia. During 0.4 snowfall days, in May, Vandalia aggregates 0.31" (8mm) of snow. In Vandalia, during the entire year, snow falls for 43.8 days and aggregates up to 13.11" (333mm) of snow.Daylight
In Vandalia, the average length of the day in May is 15h and 15min.On the first day of May in Vandalia, Montana, sunrise is at 5:46 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 9:00 pm MDT.
Sunshine
In May, the average sunshine in Vandalia is 10.3h.UV index
In Vandalia, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 5 in May translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Vandalia, MT
- Average high temperature in May: 64.6°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (23.7°F).
- Average low temperature in May: 46.9°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (10.2°F).
Average pressure in May
Vandalia, MT
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in May
Vandalia, MT
- Average wind speed in May: 11mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).
Average humidity in May
Vandalia, MT
- Average humidity in May: 52%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).
Average rainfall in May
Vandalia, MT
- Average rainfall in May: 1.85"
The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and February (0.35").
Average rainfall days in May
Vandalia, MT
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in May
Vandalia, MT
- Average snowfall in May: 0.31"
The month with the highest snowfall is December (2.6").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Vandalia, MT
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Vandalia, MT
- Average daylight in May: 15h and 12min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 10h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Vandalia, MT
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in May
Vandalia, MT
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Vandalia, MT
- Average cloud cover in May: 31
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in May
Vandalia, MT
- 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).
