Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As May sets, the average high-temperature shows an increase, moving up from an icy 36.1°F (2.3°C) in April to a chilly 48.6°F (9.2°C). Throughout the month of May, the nighttime temperature dips to an average of 33.3°F (0.7°C).Humidity
The months with the lowest humidity in Butte are May and June, with an average relative humidity of 69%.Rainfall
In Butte, in May, during 18.3 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. Throughout the year, in Butte, Alaska, there are 190.7 rainfall days, and 17.4" (442mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows in Butte, Alaska. During 1.1 snowfall days, in May, Butte aggregates 0.16" (4mm) of snow. In Butte, during the entire year, snow falls for 76.2 days and aggregates up to 33.5" (851mm) of snow.Daylight
The average length of the day in May is 17h and 39min.On the first day of the month, sunrise is at 5:41 am and sunset at 10:04 pm. On the last day of May, sunrise is at 4:28 am and sunset at 11:19 pm AKDT.
Sunshine
May has the most sunshine of the year, with an average of 11.8h of sunshine.UV index
The average daily maximum UV index in May is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The UV index of 3 in May translates into these instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What is the average May temperature in Butte?
What are the least humid months in Butte?
What is the average humidity in May in Butte?
How many days does it rain in May in Butte?
What is the last month it snows in Butte?
What is the average length of the day in May in Butte?
When is the sunrise / sunset in May in Butte?
What month has the most sunshine in Butte?
How long on average sun shines in May in Butte?
What is the UV index reading in May in Butte?
Average temperature in May
Butte, AK
- Average high temperature in May: 48.6°F
The warmest month (with the highest average high temperature) is July (61.2°F).
The month with the lowest average high temperature is January (18.1°F).
- Average low temperature in May: 33.3°F
The month with the highest average low temperature is July (44.2°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).
Average pressure in May
Butte, AK
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.7"Hg).
Average wind speed in May
Butte, AK
- Average wind speed in May: 4.4mph
The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is July (4mph).
Average humidity in May
Butte, AK
- Average humidity in May: 69%
The month with the highest relative humidity is March (87%).
The months with the lowest relative humidity are May and June (69%).
Average rainfall in May
Butte, AK
- Average rainfall in May: 1.18"
The wettest month (with the highest rainfall) is September (2.24").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in May
Butte, AK
- Average rainfall days in May: 18.3 days
The month with the highest number of rainy days is June (22.4 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in May
Butte, AK
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (6.93").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Butte, AK
- Average snowfall days in May: 1.1 days
The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Butte, AK
- Average daylight in May: 17h and 4min
The month with the longest days is June (Average daylight: 19h and 24min).
The month with the shortest days is December (Average daylight: 5h and 30min).
- Average sunshine in May: 11h and 5min
The month with the most sunshine is May (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in May
Butte, AK
- Average sunshine days in May: 9.1 days
The month with the most sunshine days is January (13.9 days).
The month with the least sunshine days is June (5.3 days).
Average UV index in May
Butte, AK
- Average UV index in May: 3
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Butte, AK
- Average cloud cover in May: 38
The month with the most cloud cover is April (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 37).
Average visibility in May
Butte, AK
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are February, March and April (4mi).
Butte, Alaska, USA
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