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's arrival sees a rise in the average high-temperature, jumping from April's fresh 52.3°F (11.3°C) to a comfortable 63°F (17.2°C). May nights in Sand Coulee are marked by an average low-temperature of 42.6°F (5.9°C).Humidity
The average relative humidity in May is 59%.Rainfall
In May, the rain falls for 11.7 days. Throughout May, 1.18" (30mm) of precipitation is accumulated. In Sand Coulee, during the entire year, the rain falls for 85.3 days and collects up to 9.84" (250mm) of precipitation.Snowfall
Months with snowfall in Sand Coulee are January through May, September through December. May is the last month it regularly snows. During 1 snowfall days, in May, Sand Coulee aggregates 0.51" (13mm) of snow. Throughout the year, in Sand Coulee, there are 58.9 snowfall days, and 28.54" (725mm) of snow is accumulated.Daylight
In Sand Coulee, the average length of the day in May is 15h and 8min.On the first day of the month, sunrise is at 6:06 am and sunset at 8:36 pm. On the last day of May, sunrise is at 5:31 am and sunset at 9:13 pm MDT.
Sunshine
In Sand Coulee, the average sunshine in May is 10.5h.UV index
In Sand Coulee, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 during May leads to these advisories:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What is the average May temperature in Sand Coulee?
What is the average humidity in May in Sand Coulee?
How much does it rain in Sand Coulee in May?
What is the last month it snows in Sand Coulee?
What is the average length of the day in May in Sand Coulee?
When are sunrise and sunset in May in Sand Coulee?
How many hours of sunshine does Sand Coulee have in May?
How high is the UV index in May in Sand Coulee?
Average temperature in May
Sand Coulee, MT
- Average high temperature in May: 63°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (30°F).
- Average low temperature in May: 42.6°F
The month with the highest average low temperature is August (58.5°F).
The coldest month (with the lowest average low temperature) is February (18.3°F).
Average pressure in May
Sand Coulee, MT
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Sand Coulee, MT
- Average wind speed in May: 8.6mph
The windiest months (with the highest average wind speed) are January and November (11.4mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in May
Sand Coulee, MT
- Average humidity in May: 59%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (40%).
Average rainfall in May
Sand Coulee, MT
- Average rainfall in May: 1.18"
The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in May
Sand Coulee, MT
- Average rainfall days in May: 11.7 days
The month with the highest number of rainy days is May (11.7 days).
The months with the least rainy days are November and December (4 days).
Average snowfall in May
Sand Coulee, MT
- Average snowfall in May: 0.51"
The month with the highest snowfall is February (5.67").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Sand Coulee, MT
- Average snowfall days in May: 1 days
The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Sand Coulee, MT
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 10h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 36min).
Average sunshine days in May
Sand Coulee, MT
- Average sunshine days in May: 18 days
The month with the most sunshine days is July (24.2 days).
The month with the least sunshine days is February (12.4 days).
Average UV index in May
Sand Coulee, 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, March, October, November and December (UV index 2).
Average cloud cover in May
Sand Coulee, MT
- Average cloud cover in May: 32
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in May
Sand Coulee, 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).
Sand Coulee, Montana, USA
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