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 Saint Mary's transitions into May, the average high-temperature shows a marked escalation, increasing from a freezing cold 31.6°F (-0.2°C) in April to a frosty 48.9°F (9.4°C). Saint Mary's's nights in May cool down to an average low-temperature of 35.2°F (1.8°C).Humidity
In Saint Mary's, the average relative humidity in May is 72%.Rainfall
In Saint Mary's, during May, the rain falls for 11.8 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 104.5 rainfall days, and 15.75" (400mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 3.4 snowfall days, in May, Saint Mary's aggregates 0.55" (14mm) of snow. In Saint Mary's, during the entire year, snow falls for 71.4 days and aggregates up to 22.72" (577mm) of snow.Daylight
The average length of the day in May in Saint Mary's is 17h and 48min.On the first day of the month, sunrise is at 6:35 am and sunset at 11:04 pm. On the last day of May, sunrise is at 5:18 am and sunset at 12:22 am AKDT.
Sunshine
With an average of 7.9h of sunshine, May has the most sunshine of the year in Saint Mary's.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 3 in May, converts into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. To guard against the harmful effects of the Sun, minimize exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Saint Mary's have in May?
What time are sunrise and sunset in May?
What month has the most sunshine?
How many hours of sunshine does Saint Mary's have in May?
When is the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Saint Mary's, AK
- Average high temperature in May: 48.9°F
The warmest month (with the highest average high temperature) is July (61.5°F).
The month with the lowest average high temperature is January (11.3°F).
- Average low temperature in May: 35.2°F
The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is January (2.3°F).
Average pressure in May
Saint Mary's, AK
- Average pressure in May: 29.9"Hg
The month with the highest atmospheric pressure is July (29.91"Hg).
The months with the lowest atmospheric pressure are October and December (29.67"Hg).
Average wind speed in May
Saint Mary's, AK
- Average wind speed in May: 9.4mph
The windiest month (with the highest average wind speed) is February (11.9mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity in May
Saint Mary's, AK
- Average humidity in May: 72%
The months with the highest relative humidity are January, February, March and December (91%).
The month with the lowest relative humidity is June (66%).
Average rainfall in May
Saint Mary's, AK
- Average rainfall in May: 0.94"
The wettest month (with the highest rainfall) is August (2.13").
The driest months (with the least rainfall) are January and June (0.87").
Average rainfall days in May
Saint Mary's, AK
- Average rainfall days in May: 11.8 days
The month with the highest number of rainy days is August (17.8 days).
The months with the least rainy days are January and February (2.4 days).
Average snowfall in May
Saint Mary's, AK
- Average snowfall in May: 0.55"
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
Saint Mary's, AK
- Average snowfall days in May: 3.4 days
The month with the highest number of snowfall days is February (11.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Saint Mary's, AK
- Average daylight in May: 17h and 5min
The month with the longest days is June (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in May: 7h and 5min
The month with the most sunshine is May (Average sunshine: 7h and 54min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).
Average sunshine days in May
Saint Mary's, AK
- Average sunshine days in May: 15.1 days
The month with the most sunshine days is March (19.5 days).
The month with the least sunshine days is August (10.9 days).
Average UV index in May
Saint Mary's, AK
- Average UV index in May: 3
The months with the highest UV index are May, June, July and August (UV index 3).
The months with the lowest UV index are March, November and December (UV index 1).
Average cloud cover in May
Saint Mary's, AK
- Average cloud cover in May: 56
The month with the most cloud cover is July (Cloud cover 68).
The month with the least cloud cover is June (Cloud cover 54).
Average visibility in May
Saint Mary's, AK
- 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, March, April, November and December (5mi).
Saint Mary's, Alaska, USA
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