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 coincides with a temperature rise, moving from April's fresh 53.8°F (12.1°C) to a refreshing 64°F (17.8°C). Acton experiences a consistent average temperature of 44.2°F (6.8°C) throughout the nights in May.Humidity
The average relative humidity in May in Acton is 59%.Rainfall
May is the month with the most rainfall in Acton. Rain falls for 17.8 days and accumulates 2.24" (57mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows in Acton, Montana. During 0.8 snowfall days, in May, Acton aggregates 0.31" (8mm) of snow. Throughout the year, there are 68.6 snowfall days, and 32.56" (827mm) of snow is accumulated.Daylight
In Acton, the average length of the day in May is 14h and 58min.On the first day of May in Acton, sunrise is at 6:00 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:57 pm MDT.
Sunshine
In Acton, the average sunshine in May is 9.9h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In May, the maximum UV index of 5 suggests this advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Acton in May?
What is the average humidity in May in Acton?
What is the wettest month in Acton?
How many days does it rain in May in Acton?
What is the last month it snows in Acton?
What is the average length of the day in May in Acton?
When is the sunrise / sunset in May in Acton?
How long on average sun shines in May in Acton?
What is the UV index reading in May in Acton?
Average temperature in May
Acton, MT
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (31.1°F).
- Average low temperature in May: 44.2°F
The months with the highest average low temperature are July and August (60.6°F).
The coldest month (with the lowest average low temperature) is February (18.3°F).
Average pressure in May
Acton, MT
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Acton, MT
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in May
Acton, MT
- Average humidity in May: 59%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (40%).
Average rainfall in May
Acton, MT
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in May
Acton, MT
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in May
Acton, MT
- Average snowfall in May: 0.31"
The month with the highest snowfall is February (6.61").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Acton, MT
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Acton, MT
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in May
Acton, MT
- Average sunshine days in May: 10.3 days
The month with the most sunshine days is September (21.1 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in May
Acton, MT
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Acton, MT
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in May
Acton, 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).
Acton, Montana, USA
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