May weather forecastPower, MT
May
Weather in May
The last month of the spring, May, is an enjoyable month in Power, Montana, with an average temperature varying between 62.8°F (17.1°C) and 42.4°F (5.8°C).Temperature
With the onset of May, Power experiences a temperature shift, with the average high-temperature moving from a fresh 52.3°F (11.3°C) in April to a comfortable 62.8°F (17.1°C). Power's average low-temperature for the month of May records at a wintry 42.4°F (5.8°C).Humidity
In Power, the average relative humidity in May is 59%.Rainfall
In Power, in May, during 14.5 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. Throughout the year, there are 102.6 rainfall days, and 11.89" (302mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 1.2 snowfall days, in May, Power aggregates 0.91" (23mm) of snow. In Power, during the entire year, snow falls for 66.6 days and aggregates up to 32.17" (817mm) of snow.Daylight
In Power, the average length of the day in May is 15h and 10min.On the first day of the month, sunrise is at 6:07 am and sunset at 8:39 pm. On the last day of May, sunrise is at 5:32 am and sunset at 9:16 pm MDT.
Sunshine
In Power, the average sunshine in May is 10.3h.UV index
In Power, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the maximum UV index of 4 suggests this advice:
Take precautions - Protection against sunburn is recommended. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Power, MT
- Average high temperature in May: 62.8°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (29.8°F).
- Average low temperature in May: 42.4°F
The month with the highest average low temperature is August (57.6°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).
Average pressure in May
Power, MT
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Power, MT
- Average wind speed in May: 8.4mph
The windiest month (with the highest average wind speed) is November (11.2mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).
Average humidity in May
Power, MT
- Average humidity in May: 59%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (41%).
Average rainfall in May
Power, MT
- Average rainfall in May: 1.65"
The wettest month (with the highest rainfall) is June (1.97").
The driest months (with the least rainfall) are January and July (0.59").
Average rainfall days in May
Power, MT
- Average rainfall days in May: 14.5 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is November (4.4 days).
Average snowfall in May
Power, MT
- Average snowfall in May: 0.91"
The month with the highest snowfall is February (5.28").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Power, MT
- Average snowfall days in May: 1.2 days
The month with the highest number of snowfall days is February (12.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Power, MT
- Average daylight in May: 15h and 12min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 10h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 30min).
Average sunshine days in May
Power, MT
- Average sunshine days in May: 12.9 days
The month with the most sunshine days is September (20.5 days).
The month with the least sunshine days is April (11.6 days).
Average UV index in May
Power, MT
- 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 January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Power, MT
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in May
Power, 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).





