May weather forecastChester, MT
May
Weather in May
The last month of the spring, May, is a comfortable month in Chester, Montana, with temperature in the range of an average low of 45.1°F (7.3°C) and an average high of 63.1°F (17.3°C).Temperature
As Chester transitions into May, a rise in the average high-temperature is observed, moving from a cool 53.1°F (11.7°C) in April to a comfortable 63.1°F (17.3°C). Throughout May, a steady low-temperature average of 45.1°F (7.3°C) is noted.Humidity
In May, the average relative humidity is 54%.Rainfall
In Chester, in May, during 14.9 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, there are 113.8 rainfall days, and 11.89" (302mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows in Chester, Montana. During 0.8 snowfall days, in May, Chester aggregates 0.87" (22mm) of snow. Throughout the year, in Chester, there are 65.1 snowfall days, and 24.69" (627mm) of snow is accumulated.Daylight
In May, the average length of the day is 15h and 16min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:39 pm. On the last day of May, in Chester, sunrise is at 5:26 am and sunset at 9:17 pm MDT.
Sunshine
In Chester, the average sunshine in May is 10.3h.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 unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 4 during May leads to these advisories:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Enhance your sun protection with tightly woven, yet airy clothing. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Chester, MT
- Average high temperature in May: 63.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (28.2°F).
- Average low temperature in May: 45.1°F
The month with the highest average low temperature is August (60.4°F).
The coldest month (with the lowest average low temperature) is February (16.3°F).
Average pressure in May
Chester, MT
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in May
Chester, MT
- Average wind speed in May: 9.9mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in May
Chester, MT
- Average humidity in May: 54%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall in May
Chester, MT
- Average rainfall in May: 1.73"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days in May
Chester, MT
- Average rainfall days in May: 14.9 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (5 days).
Average snowfall in May
Chester, MT
- Average snowfall in May: 0.87"
The month with the highest snowfall is February (5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Chester, MT
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Chester, MT
- Average daylight in May: 15h and 18min
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 18min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 18min).
Average sunshine days in May
Chester, MT
- Average sunshine days in May: 13.5 days
The month with the most sunshine days is September (19.5 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in May
Chester, 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
Chester, MT
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in May
Chester, 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).
