May weather forecastRim Rock Colony, MT
May
Weather in May
The last month of the spring, May, is a refreshing month in Rim Rock Colony, Montana, with an average temperature varying between 60.3°F (15.7°C) and 42.4°F (5.8°C).Temperature
Rim Rock Colony's May weather shows an increase in high-temperatures, moving from April's chilly 49.6°F (9.8°C) to a mild 60.3°F (15.7°C). During May, the temperature is averaged to a low of 42.4°F (5.8°C) at night.Humidity
In Rim Rock Colony, the average relative humidity in May is 56%.Rainfall
In Rim Rock Colony, during May, the rain falls for 10.4 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Rim Rock Colony, during the entire year, the rain falls for 70.4 days and collects up to 8.46" (215mm) of precipitation.Snowfall
Months with snowfall in Rim Rock Colony are January through May, September through December. May is the last month it regularly snows. During 1.3 snowfall days, in May, Rim Rock Colony aggregates 0.79" (20mm) of snow. In Rim Rock Colony, during the entire year, snow falls for 54.3 days and aggregates up to 19.49" (495mm) of snow.Daylight
In May, the average length of the day is 15h and 19min.On the first day of the month, sunrise is at 6:06 am and sunset at 8:44 pm. On the last day of May, sunrise is at 5:29 am and sunset at 9:23 pm MDT.
Sunshine
The average sunshine in May is 10.3h.UV index
In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 during May translates into the following directions:
Prioritize safety - Recommendations to avert sunburn are shared. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rim Rock Colony, MT
- Average high temperature in May: 60.3°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in May: 42.4°F
The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (15.3°F).
Average pressure in May
Rim Rock Colony, 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 (29.87"Hg).
Average wind speed in May
Rim Rock Colony, MT
- Average wind speed in May: 9.9mph
The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.8mph).
Average humidity in May
Rim Rock Colony, MT
- Average humidity in May: 56%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (43%).
Average rainfall in May
Rim Rock Colony, MT
- Average rainfall in May: 1.3"
The wettest month (with the highest rainfall) is June (1.77").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in May
Rim Rock Colony, MT
- Average rainfall days in May: 10.4 days
The month with the highest number of rainy days is May (10.4 days).
The month with the least rainy days is November (2.6 days).
Average snowfall in May
Rim Rock Colony, MT
- Average snowfall in May: 0.79"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Rim Rock Colony, MT
- Average snowfall days in May: 1.3 days
The month with the highest number of snowfall days is December (10.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Rim Rock Colony, 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 18min).
- 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 36min).
Average sunshine days in May
Rim Rock Colony, MT
- Average sunshine days in May: 17.8 days
The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is April (17.4 days).
Average UV index in May
Rim Rock Colony, 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
Rim Rock Colony, MT
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in May
Rim Rock Colony, 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).
