May weather forecastRapelje, MT
May
Weather in May
May, the last month of the spring in Rapelje, is an enjoyable month, with an average temperature ranging between min 41.5°F (5.3°C) and max 61°F (16.1°C).Temperature
With the onset of May, Rapelje's weather sees a temperature rise, transitioning from a fresh 51.1°F (10.6°C) in April to a refreshing 61°F (16.1°C). In the month of May, the nighttime temperature dips to a steady average of 41.5°F (5.3°C).Humidity
The average relative humidity in May is 62%.Rainfall
May is the month with the most rainfall in Rapelje. Rain falls for 17.5 days and accumulates 2.6" (66mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Rapelje. May is the last month it regularly snows. During 1 snowfall days, in May, Rapelje aggregates 0.91" (23mm) of snow. In Rapelje, during the entire year, snow falls for 63.3 days and aggregates up to 39.09" (993mm) of snow.Daylight
In May, the average length of the day is 14h and 59min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:25 pm. On the last day of May, sunrise is at 5:29 am and sunset at 8:59 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 estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during May leads to these instructions:
Ensure safety - Recommendations to avert sunburn are presented. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rapelje, MT
- Average high temperature in May: 61°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (30.9°F).
- Average low temperature in May: 41.5°F
The month with the highest average low temperature is August (57.2°F).
The coldest month (with the lowest average low temperature) is February (17.4°F).
Average pressure in May
Rapelje, MT
- Average pressure in May: 29.93"Hg
The months with the highest atmospheric pressure are January and December (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Rapelje, MT
- Average wind speed in May: 7.2mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in May
Rapelje, MT
- Average humidity in May: 62%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).
Average rainfall in May
Rapelje, MT
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in May
Rapelje, MT
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in May
Rapelje, MT
- Average snowfall in May: 0.91"
The month with the highest snowfall is February (7.36").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Rapelje, MT
- Average snowfall days in May: 1 days
The month with the highest number of snowfall days is February (13.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Rapelje, 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: 10h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 12min).
Average sunshine days in May
Rapelje, MT
- Average sunshine days in May: 9.9 days
The month with the most sunshine days is September (18.9 days).
The month with the least sunshine days is April (9.5 days).
Average UV index in May
Rapelje, 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, November and December (UV index 2).
Average cloud cover in May
Rapelje, MT
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in May
Rapelje, 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).
