May weather forecastBasin, MT
May
Weather in May
The last month of the spring, May, is a refreshing month in Basin, Montana, with an average temperature varying between 58.5°F (14.7°C) and 35.2°F (1.8°C).Temperature
As Basin enters May, the average high-temperature increases from the a frosty 46.4°F (8°C) of April to a mild 58.5°F (14.7°C). Basin's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 35.2°F (1.8°C) in May.Humidity
In Basin, the average relative humidity in May is 64%.Rainfall
In Basin, during May, the rain falls for 18.2 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 133.7 rainfall days, and 16.38" (416mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. In May, it is snowing for 4.4 days. Throughout May, 2.64" (67mm) of snow is accumulated. Throughout the year, there are 105.8 snowfall days, and 55.12" (1400mm) of snow is accumulated.Daylight
In May, the average length of the day in Basin is 15h and 1min.On the first day of May, sunrise is at 6:13 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 9:13 pm MDT.
Sunshine
In May, the average sunshine is 10.2h.UV index
In Basin, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In May, the maximum UV index of 4 transforms into these recommendations:
Be vigilant - Preventing sunburn is recommended. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Basin, MT
- Average high temperature in May: 58.5°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (27°F).
- Average low temperature in May: 35.2°F
The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is December (12.6°F).
Average pressure in May
Basin, MT
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Basin, MT
- Average wind speed in May: 5.4mph
The windiest months (with the highest average wind speed) are January and November (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Basin, MT
- Average humidity in May: 64%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (46%).
Average rainfall in May
Basin, MT
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is December (0.79").
Average rainfall days in May
Basin, MT
- Average rainfall days in May: 18.2 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in May
Basin, MT
- Average snowfall in May: 2.64"
The month with the highest snowfall is February (9.72").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Basin, MT
- Average snowfall days in May: 4.4 days
The month with the highest number of snowfall days is February (18 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Basin, MT
- 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: 10h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in May
Basin, MT
- Average sunshine days in May: 9.3 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in May
Basin, MT
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in May
Basin, MT
- Average cloud cover in May: 34
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in May
Basin, MT
- 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).
