May weather forecastFort Shaw, MT
May
Weather in May
May, the last month of the spring in Fort Shaw, is a comfortable month, with an average temperature fluctuating between 41.9°F (5.5°C) and 62.2°F (16.8°C).Temperature
May's arrival sees a rise in the average high-temperature, jumping from April's cool 51.4°F (10.8°C) to a refreshing 62.2°F (16.8°C). During the nights in May, Fort Shaw experiences a consistent average temperature of 41.9°F (5.5°C).Humidity
The average relative humidity in May is 59%.Rainfall
In Fort Shaw, during May, the rain falls for 15.2 days and regularly aggregates up to 1.69" (43mm) of precipitation. In Fort Shaw, during the entire year, the rain falls for 112.8 days and collects up to 12.95" (329mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 1.2 snowfall days, in May, Fort Shaw aggregates 0.63" (16mm) of snow. In Fort Shaw, during the entire year, snow falls for 69.4 days and aggregates up to 35.35" (898mm) of snow.Daylight
The average length of the day in May is 15h and 9min.On the first day of the month, sunrise is at 6:08 am and sunset at 8:39 pm. On the last day of May, sunrise is at 5:33 am and sunset at 9:16 pm MDT.
Sunshine
The average sunshine in May is 10.1h.UV index
In Fort Shaw, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the maximum UV index of 4 translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fort Shaw, MT
- Average high temperature in May: 62.2°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (29.5°F).
- Average low temperature in May: 41.9°F
The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is December (17.4°F).
Average pressure in May
Fort Shaw, MT
- Average pressure in May: 29.93"Hg
The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Fort Shaw, MT
- Average wind speed in May: 8.1mph
The windiest months (with the highest average wind speed) are January and November (10.7mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in May
Fort Shaw, MT
- Average humidity in May: 59%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).
Average rainfall in May
Fort Shaw, MT
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are January and July (0.63").
Average rainfall days in May
Fort Shaw, MT
- Average rainfall days in May: 15.2 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in May
Fort Shaw, MT
- Average snowfall in May: 0.63"
The month with the highest snowfall is February (6.34").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Fort Shaw, MT
- Average snowfall days in May: 1.2 days
The month with the highest number of snowfall days is February (14.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Fort Shaw, MT
- Average daylight in May: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 10h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in May
Fort Shaw, MT
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (10.3 days).
Average UV index in May
Fort Shaw, 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
Fort Shaw, MT
- Average cloud cover in May: 34
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in May
Fort Shaw, 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).
