May weather forecastBoyd, MT
May
Weather in May
May, the last month of the spring in Boyd, is a refreshing month, with an average temperature fluctuating between 41.4°F (5.2°C) and 61°F (16.1°C).Temperature
Boyd's transition into May is marked by a temperature shift, moving from a fresh 51.3°F (10.7°C) in April to a refreshing 61°F (16.1°C). In the month of May, the average temperature dips to a wintry 41.4°F (5.2°C) during the night.Humidity
The average relative humidity in May is 62%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.3 days and typically aggregates up to 2.09" (53mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Boyd. In Boyd, during May, snow falls for 2.4 days and regularly aggregates up to 2.83" (72mm) of snow. Throughout the year, in Boyd, there are 61.5 snowfall days, and 41.77" (1061mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 55min.On the first day of May, sunrise is at 6:03 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:57 pm MDT.
Sunshine
The average sunshine in May in Boyd is 10.5h.UV index
In Boyd, 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 average individuals.Note: The average daily UV index of 4 in May transforms into the following instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Boyd, MT
- Average high temperature in May: 61°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (30.7°F).
- Average low temperature in May: 41.4°F
The months with the highest average low temperature are July and August (57.2°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).
Average pressure in May
Boyd, 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
Boyd, MT
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Boyd, 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
Boyd, MT
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in May
Boyd, MT
- Average rainfall days in May: 16.3 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4 days).
Average snowfall in May
Boyd, MT
- Average snowfall in May: 2.83"
The month with the highest snowfall is February (6.81").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Boyd, MT
- Average snowfall days in May: 2.4 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Boyd, MT
- Average daylight in May: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 10h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in May
Boyd, MT
- Average sunshine days in May: 10.5 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in May
Boyd, 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
Boyd, MT
- Average cloud cover in May: 32
The month with the most cloud cover is February (Cloud cover 38).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in May
Boyd, 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).





