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 arrives, a rise in the average high-temperature is observed, moving from a chilly 46.8°F (8.2°C) in April to a refreshing 59.5°F (15.3°C). A marked drop from daytime peak temperatures to an average low-temperature of 35.6°F (2°C) is observed during the nights in May.Humidity
In May, the average relative humidity is 68%.Rainfall
In La Salle, in May, during 15.4 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, in La Salle, there are 142.8 rainfall days, and 17.36" (441mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.9 snowfall days, in May, La Salle aggregates 0.71" (18mm) of snow. In La Salle, during the entire year, snow falls for 104.7 days and aggregates up to 51.34" (1304mm) of snow.Daylight
The average length of the day in May is 15h and 14min.On the first day of May, sunrise is at 6:16 am and sunset at 8:51 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 9:29 pm MDT.
Sunshine
The average sunshine in May is 10.4h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 4 in May converts into the following recommendations:
Take precautions - Protection against sunburn is recommended. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Stay sun-safe with clothing that is both closely woven and worn loosely. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
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 La Salle have in May?
When are sunrise and sunset in May?
How many hours of sunshine does La Salle have in May?
How high is the UV index in May?
Average temperature in May
La Salle, MT
- Average high temperature in May: 59.5°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 (25.9°F).
- Average low temperature in May: 35.6°F
The month with the highest average low temperature is August (46.4°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in May
La Salle, MT
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
La Salle, MT
- Average wind speed in May: 4.4mph
The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in May
La Salle, MT
- Average humidity in May: 68%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).
Average rainfall in May
La Salle, MT
- Average rainfall in May: 1.61"
The wettest month (with the highest rainfall) is June (2.05").
The driest month (with the least rainfall) is August (0.55").
Average rainfall days in May
La Salle, MT
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is April (17.9 days).
The month with the least rainy days is August (6.6 days).
Average snowfall in May
La Salle, MT
- Average snowfall in May: 0.71"
The month with the highest snowfall is January (11.3").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
La Salle, MT
- Average snowfall days in May: 0.9 days
The month with the highest number of snowfall days is December (21.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
La Salle, MT
- Average daylight in May: 15h and 1min
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 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
La Salle, MT
- Average sunshine days in May: 12.9 days
The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in May
La Salle, MT
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
La Salle, MT
- Average cloud cover in May: 33
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in May
La Salle, MT
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
La Salle, Montana, USA
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