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 indicates a change in the average high-temperature, moving up from a frosty 46.6°F (8.1°C) in April to a moderate 59.5°F (15.3°C). A striking departure from daytime highs to an average low-temperature of 35.2°F (1.8°C) is witnessed during May.Humidity
In May, the average relative humidity is 68%.Rainfall
In Lake McDonald, in May, during 13.8 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 126.4 rainfall days, and 11.22" (285mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 1.5 snowfall days, in May, Lake McDonald aggregates 0.55" (14mm) of snow. Throughout the year, there are 97 snowfall days, and 33.86" (860mm) of snow is accumulated.Daylight
In May, the average length of the day is 15h and 16min.On the first day of May, sunrise is at 6:14 am and sunset at 8:51 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 9:29 pm MDT.
Sunshine
In May, the average sunshine is 10.4h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 4 in May converts into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Lake McDonald in May?
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 Lake McDonald have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Lake McDonald have in May?
How high is the UV index in May?
Average temperature in May
Lake McDonald, MT
- Average high temperature in May: 59.5°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in May: 35.2°F
The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in May
Lake McDonald, 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
Lake McDonald, MT
- Average wind speed in May: 4.4mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).
Average humidity in May
Lake McDonald, 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
Lake McDonald, MT
- Average rainfall in May: 1.1"
The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in May
Lake McDonald, MT
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in May
Lake McDonald, MT
- Average snowfall in May: 0.55"
The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Lake McDonald, MT
- Average snowfall days in May: 1.5 days
The month with the highest number of snowfall days is December (19.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Lake McDonald, MT
- 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 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 30min).
Average sunshine days in May
Lake McDonald, MT
- Average sunshine days in May: 14.2 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).
Average UV index in May
Lake McDonald, MT
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Lake McDonald, MT
- Average cloud cover in May: 33
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in May
Lake McDonald, 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).
Lake McDonald, Montana, USA
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