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 frosty 48.7°F (9.3°C) to a refreshing 60.4°F (15.8°C). May nights in Winston bring a significant cooling from the heat of the day, with averages of 36.9°F (2.7°C).Humidity
In Winston, the average relative humidity in May is 62%.Rainfall
In Winston, in May, it is raining for 14.1 days, with typically 1.14" (29mm) of accumulated precipitation. In Winston, during the entire year, the rain falls for 117.5 days and collects up to 10.24" (260mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Winston. May is the last month it regularly snows in Winston. During 1.5 snowfall days, in May, Winston aggregates 0.55" (14mm) of snow. Throughout the year, there are 72.8 snowfall days, and 26.22" (666mm) of snow is accumulated.Daylight
In May, the average length of the day is 15h and 2min.On the first day of May in Winston, sunrise is at 6:10 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 9:11 pm MDT.
Sunshine
The average sunshine in May in Winston, Montana, is 10.5h.UV index
The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In May, the maximum UV index of 4 suggests these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Winston?
What is the average humidity in May in Winston?
How much does it rain in Winston in May?
What is the last month it snows in Winston?
What is the average length of the day in May in Winston?
When are sunrise and sunset in May in Winston?
How many hours of sunshine does Winston have in May?
What is the UV index reading in May in Winston?
Average temperature in May
Winston, MT
- Average high temperature in May: 60.4°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in May: 36.9°F
The months with the highest average low temperature are July and August (49.3°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).
Average pressure in May
Winston, MT
- Average pressure in May: 29.94"Hg
The months with the highest atmospheric pressure are January and December (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Winston, MT
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is December (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in May
Winston, MT
- Average humidity in May: 62%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (46%).
Average rainfall in May
Winston, MT
- Average rainfall in May: 1.14"
The wettest month (with the highest rainfall) is June (1.65").
The driest month (with the least rainfall) is December (0.51").
Average rainfall days in May
Winston, MT
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is April (14.7 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in May
Winston, MT
- Average snowfall in May: 0.55"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Winston, MT
- Average snowfall days in May: 1.5 days
The month with the highest number of snowfall days is February (15.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Winston, MT
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 10h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in May
Winston, MT
- Average sunshine days in May: 13.5 days
The month with the most sunshine days is August (19.6 days).
The month with the least sunshine days is April (10.5 days).
Average UV index in May
Winston, 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 February and December (UV index 1).
Average cloud cover in May
Winston, MT
- Average cloud cover in May: 32
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in May
Winston, MT
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Winston, Montana, USA
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