May weather forecastBighorn, MT
May
Weather in May
The last month of the spring, May, is a comfortable month in Bighorn, Montana, with an average temperature ranging between min 46.2°F (7.9°C) and max 65.8°F (18.8°C).Temperature
May indicates a change in the average high-temperature, moving up from a fresh 55.2°F (12.9°C) in April to a refreshing 65.8°F (18.8°C). During the May nights, an average temperature of 46.2°F (7.9°C) is observed.Humidity
In May, the average relative humidity is 55%.Rainfall
May is the month with the most rainfall. Rain falls for 13.7 days and accumulates 1.81" (46mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.4 snowfall days, in May, Bighorn aggregates 0.16" (4mm) of snow. Throughout the year, there are 47 snowfall days, and 15.83" (402mm) of snow is accumulated.Daylight
The average length of the day in May is 15h and 0min.On the first day of the month, sunrise is at 5:54 am and sunset at 8:18 pm. On the last day of May, sunrise is at 5:21 am and sunset at 8:53 pm MDT.
Sunshine
In Bighorn, the average sunshine in May is 10.1h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 5 in May translates into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be vigilant! The reflective nature of snow can increase 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
Bighorn, MT
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The months with the lowest average high temperature are January and December (30.9°F).
- Average low temperature in May: 46.2°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in May
Bighorn, MT
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Bighorn, MT
- Average wind speed in May: 10mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is July (8.2mph).
Average humidity in May
Bighorn, MT
- Average humidity in May: 55%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).
Average rainfall in May
Bighorn, MT
- Average rainfall in May: 1.81"
The wettest month (with the highest rainfall) is May (1.81").
The driest months (with the least rainfall) are January, November and December (0.47").
Average rainfall days in May
Bighorn, MT
- Average rainfall days in May: 13.7 days
The month with the highest number of rainy days is May (13.7 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in May
Bighorn, MT
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Bighorn, MT
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Bighorn, 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 6min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 18min).
Average sunshine days in May
Bighorn, MT
- Average sunshine days in May: 15.1 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is April (14.2 days).
Average UV index in May
Bighorn, MT
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Bighorn, MT
- Average cloud cover in May: 34
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in May
Bighorn, 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).
