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
The beginning of May marks a shift in the average high-temperature, moving from April's chilly 48.7°F (9.3°C) to a mild 58.6°F (14.8°C). The average low-temperature during May nights is a wintry 39°F (3.9°C).Humidity
The average relative humidity in May is 80%.Rainfall
In May, the rain falls for 17.4 days. Throughout May, 3.86" (98mm) of precipitation is accumulated. Throughout the year, there are 194.4 rainfall days, and 69.29" (1760mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Glacier, Washington. During 0.3 snowfall days, in May, Glacier aggregates 0.2" (5mm) of snow. In Glacier, during the entire year, snow falls for 51.2 days and aggregates up to 83.11" (2111mm) of snow.Daylight
The average length of the day in May is 15h and 19min.On the first day of May, sunrise is at 5:45 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 9:02 pm PDT.
Sunshine
The average sunshine in May is 7.8h.UV index
The average daily maximum UV index in May is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 3 during May translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Glacier in May?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
What is the average length of the day in May in Glacier?
When is the sunrise / sunset in May?
How long on average sun shines in May in Glacier?
How high is the UV index in May?
Average temperature in May
Glacier, WA
- Average high temperature in May: 58.6°F
The warmest month (with the highest average high temperature) is August (71.2°F).
The month with the lowest average high temperature is December (35.6°F).
- Average low temperature in May: 39°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (26.1°F).
Average pressure in May
Glacier, WA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are May, June, August and September (30"Hg).
Average wind speed in May
Glacier, WA
- Average wind speed in May: 3.5mph
The windiest month (with the highest average wind speed) is January (4.6mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in May
Glacier, WA
- Average humidity in May: 80%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is July (74%).
Average rainfall in May
Glacier, WA
- Average rainfall in May: 3.86"
The wettest month (with the highest rainfall) is January (10.39").
The driest month (with the least rainfall) is July (1.5").
Average rainfall days in May
Glacier, WA
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is April (21.3 days).
The month with the least rainy days is August (10.3 days).
Average snowfall in May
Glacier, WA
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (22.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Glacier, WA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is December (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Glacier, WA
- Average daylight in May: 15h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in May: 7h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in May
Glacier, WA
- Average sunshine days in May: 10.6 days
The month with the most sunshine days is August (18.1 days).
The month with the least sunshine days is April (6.8 days).
Average UV index in May
Glacier, WA
- 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 and November (UV index 1).
Average cloud cover in May
Glacier, WA
- Average cloud cover in May: 53
The month with the most cloud cover is March (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Glacier, WA
- Average visibility in May: 4mi
The months with the highest visibility are June, July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (4mi).
Glacier, Washington, USA
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