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
May brings a rise in Swan Valley's average high-temperature, moving from an icy 42.1°F (5.6°C) in April to a refreshing 55.4°F (13°C). Despite a noticeable differential from daytime highs, Swan Valley notes an average nighttime low-temperature of 31.3°F (-0.4°C) in May.Humidity
The average relative humidity in May is 70%.Rainfall
In Swan Valley, in May, during 17.9 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Swan Valley, during the entire year, the rain falls for 127 days and collects up to 24.29" (617mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In Swan Valley, in May, snow falls for 4.1 days, with typically accumulated 2.87" (73mm) of snow. In Swan Valley, during the entire year, snow falls for 126.6 days and aggregates up to 110.28" (2801mm) of snow.Daylight
The average length of the day in May is 14h and 43min.On the first day of May, sunrise is at 6:16 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:59 pm MDT.
Sunshine
The average sunshine in May is 10.1h.UV index
In Swan Valley, the average daily maximum UV index in May is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 3 in May translates into the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. To cut down UV radiation exposure by about half, sport a wide-brim hat. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May in Swan Valley?
How many days does it rain in May in Swan Valley?
How many days does it snow in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Swan Valley have in May?
What is the UV index intensity in May?
Average temperature in May
Swan Valley, ID
- Average high temperature in May: 55.4°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is December (24.3°F).
- Average low temperature in May: 31.3°F
The months with the highest average low temperature are July and August (45.3°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in May
Swan Valley, ID
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Swan Valley, ID
- Average wind speed in May: 5mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in May
Swan Valley, ID
- Average humidity in May: 70%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (46%).
Average rainfall in May
Swan Valley, ID
- Average rainfall in May: 2.52"
The wettest month (with the highest rainfall) is February (2.91").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in May
Swan Valley, ID
- Average rainfall days in May: 17.9 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in May
Swan Valley, ID
- Average snowfall in May: 2.87"
The month with the highest snowfall is February (22.91").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Swan Valley, ID
- Average snowfall days in May: 4.1 days
The months with the highest number of snowfall days are February and December (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Swan Valley, ID
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in May
Swan Valley, ID
- Average sunshine days in May: 7.8 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (5.3 days).
Average UV index in May
Swan Valley, ID
- Average UV index in May: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in May
Swan Valley, ID
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in May
Swan Valley, ID
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (3mi).
Swan Valley, Idaho, USA
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