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
With the arrival of May, the average high-temperature transitions from a fresh 52.2°F (11.2°C) in April to a refreshing 64.6°F (18.1°C). During the month of May, Saint Marie's nighttime temperature lowers to an average of 46.9°F (8.3°C).Humidity
In Saint Marie, Montana, the average relative humidity in May is 52%.Rainfall
In Saint Marie, Montana, in May, it is raining for 13.8 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, there are 90.8 rainfall days, and 11.1" (282mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.4 snowfall days, in May, Saint Marie aggregates 0.31" (8mm) of snow. Throughout the year, in Saint Marie, there are 43.8 snowfall days, and 13.11" (333mm) of snow is accumulated.Daylight
The average length of the day in May in Saint Marie is 15h and 15min.On the first day of May in Saint Marie, sunrise is at 5:45 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:09 am and sunset at 8:58 pm MDT.
Sunshine
In Saint Marie, the average sunshine in May is 10.3h.UV index
The average daily maximum UV index in May in Saint Marie is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 5 in May translates into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What are the temperatures in Saint Marie in May?
What is the average humidity in May in Saint Marie?
How many days does it rain in May in Saint Marie?
What is the last month it snows in Saint Marie?
What is the average length of the day in May in Saint Marie?
When is the sunrise / sunset in May in Saint Marie?
How long on average sun shines in May in Saint Marie?
What is the UV index intensity in May in Saint Marie?
Average temperature in May
Saint Marie, MT
- Average high temperature in May: 64.6°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (23.7°F).
- Average low temperature in May: 46.9°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (10.2°F).
Average pressure in May
Saint Marie, MT
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in May
Saint Marie, MT
- Average wind speed in May: 11mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).
Average humidity in May
Saint Marie, MT
- Average humidity in May: 52%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).
Average rainfall in May
Saint Marie, MT
- Average rainfall in May: 1.85"
The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and February (0.35").
Average rainfall days in May
Saint Marie, MT
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in May
Saint Marie, MT
- Average snowfall in May: 0.31"
The month with the highest snowfall is December (2.6").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Saint Marie, MT
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Saint Marie, MT
- Average daylight in May: 15h and 2min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 10h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Saint Marie, MT
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in May
Saint Marie, MT
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Saint Marie, MT
- Average cloud cover in May: 31
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in May
Saint Marie, MT
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Saint Marie, Montana, USA
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