May weather forecastBannack, MT
May
Weather in May
The last month of the spring, May, is a moderate month in Bannack, Montana, with temperature in the range of an average high of 55.6°F (13.1°C) and an average low of 34.7°F (1.5°C).Temperature
May's arrival signals a temperature shift, moving from a chilly 44.1°F (6.7°C) in April to a moderate 55.6°F (13.1°C). May's nights observe an average temperature of 34.7°F (1.5°C).Humidity
The average relative humidity in May is 61%.Rainfall
In Bannack, in May, during 13.7 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Bannack, during the entire year, the rain falls for 103.2 days and collects up to 9.84" (250mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In May, it is snowing for 3.9 days. Throughout May, 2.4" (61mm) of snow is accumulated. Throughout the year, there are 81.9 snowfall days, and 31.65" (804mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 53min.On the first day of May, sunrise is at 6:19 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 9:11 pm MDT.
Sunshine
In May, the average sunshine is 10.6h.UV index
In Bannack, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In May, the maximum UV index of 4 translates into these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Bannack, MT
- Average high temperature in May: 55.6°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is December (24.3°F).
- Average low temperature in May: 34.7°F
The month with the highest average low temperature is July (47.1°F).
The coldest month (with the lowest average low temperature) is December (9.9°F).
Average pressure in May
Bannack, MT
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Bannack, MT
- Average wind speed in May: 6.2mph
The windiest months (with the highest average wind speed) are November and December (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in May
Bannack, MT
- Average humidity in May: 61%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (43%).
Average rainfall in May
Bannack, MT
- Average rainfall in May: 1.38"
The wettest month (with the highest rainfall) is June (1.73").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in May
Bannack, MT
- Average rainfall days in May: 13.7 days
The month with the highest number of rainy days is May (13.7 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in May
Bannack, MT
- Average snowfall in May: 2.4"
The month with the highest snowfall is April (4.96").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Bannack, MT
- Average snowfall days in May: 3.9 days
The month with the highest number of snowfall days is February (13.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Bannack, MT
- Average daylight in May: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 10h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in May
Bannack, MT
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is July (20.7 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in May
Bannack, MT
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in May
Bannack, MT
- Average cloud cover in May: 30
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in May
Bannack, MT
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is February (4mi).
