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
Troy sees an increase in average high-temperatures during May, moving from a chilly 46.2°F (7.9°C) in April to a moderate 59.5°F (15.3°C). Contrasted against daytime highs, Troy records an average nighttime low of 36.1°F (2.3°C) in May.Humidity
The average relative humidity in May is 69%.Rainfall
In Troy, during May, the rain falls for 15.8 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, there are 138.8 rainfall days, and 18.15" (461mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.9 snowfall days, in May, Troy aggregates 0.2" (5mm) of snow. In Troy, during the entire year, snow falls for 91.8 days and aggregates up to 49.33" (1253mm) of snow.Daylight
The average length of the day in May is 15h and 16min.On the first day of the month, sunrise is at 6:22 am and sunset at 8:58 pm. On the last day of May, sunrise is at 5:46 am and sunset at 9:36 pm MDT.
Sunshine
The average sunshine in May is 9.8h.UV index
The average daily maximum UV index in May in Troy is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 during May translates into the following directions:
Take necessary precautions - Defending against sun damage is advocated. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How many days does it rain in May in Troy?
What is the last month it snows?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Troy have in May?
What is the UV index intensity in May?
Average temperature in May
Troy, MT
- Average high temperature in May: 59.5°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in May: 36.1°F
The month with the highest average low temperature is August (47.3°F).
The coldest month (with the lowest average low temperature) is December (15.1°F).
Average pressure in May
Troy, MT
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Troy, MT
- Average wind speed in May: 4.3mph
The windiest months (with the highest average wind speed) are April and June (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity in May
Troy, MT
- Average humidity in May: 69%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (53%).
Average rainfall in May
Troy, MT
- Average rainfall in May: 1.73"
The wettest month (with the highest rainfall) is December (2.24").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in May
Troy, MT
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is April (17.5 days).
The month with the least rainy days is August (5.9 days).
Average snowfall in May
Troy, MT
- Average snowfall in May: 0.2"
The month with the highest snowfall is January (11.34").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Troy, MT
- Average snowfall days in May: 0.9 days
The month with the highest number of snowfall days is December (20 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Troy, MT
- Average daylight in May: 15h and 2min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 9h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in May
Troy, MT
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (7.4 days).
Average UV index in May
Troy, MT
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Troy, MT
- Average cloud cover in May: 37
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in May
Troy, MT
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
Troy, Montana, USA
Weather forecast for your location
2. Allow the app to use your location