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
A shift in the average high-temperature is noticeable in May, changing from an icy 41.9°F (5.5°C) in April to a fresh 54.1°F (12.3°C). Jackson's temperature tends to fall to an average low of 33.8°F (1°C) during the nights of May.Humidity
In Jackson, the average relative humidity in May is 64%.Rainfall
In Jackson, during May, the rain falls for 18.3 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Jackson, during the entire year, the rain falls for 129.5 days and collects up to 12.4" (315mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 1.7 snowfall days, in May, Jackson aggregates 0.94" (24mm) of snow. Throughout the year, there are 63.5 snowfall days, and 22.76" (578mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 55min.On the first day of the month, sunrise is at 6:20 am and sunset at 8:40 pm. On the last day of May, sunrise is at 5:48 am and sunset at 9:14 pm MDT.
Sunshine
In May, the average sunshine is 10.5h.UV index
In Jackson, the average daily maximum UV index in May is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: During May, 3 as the daily maximum UV index converts into the following advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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 much does it rain in May?
What is the last month it snows?
How many hours of daylight does Jackson have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Jackson, MT
- Average high temperature in May: 54.1°F
The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is December (25.2°F).
- Average low temperature in May: 33.8°F
The month with the highest average low temperature is August (47.5°F).
The coldest months (with the lowest average low temperature) are January and December (9.5°F).
Average pressure in May
Jackson, MT
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Jackson, MT
- Average wind speed in May: 4.8mph
The windiest months (with the highest average wind speed) are March and April (5.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in May
Jackson, MT
- Average humidity in May: 64%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is August (43%).
Average rainfall in May
Jackson, MT
- Average rainfall in May: 1.89"
The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are July and August (0.51").
Average rainfall days in May
Jackson, MT
- Average rainfall days in May: 18.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in May
Jackson, MT
- Average snowfall in May: 0.94"
The month with the highest snowfall is February (5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Jackson, MT
- Average snowfall days in May: 1.7 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Jackson, MT
- Average daylight in May: 14h and 5min
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 3min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in May
Jackson, MT
- Average sunshine days in May: 8.1 days
The month with the most sunshine days is July (19.4 days).
The month with the least sunshine days is April (7.7 days).
Average UV index in May
Jackson, MT
- Average UV index in May: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Jackson, MT
- Average cloud cover in May: 32
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Jackson, MT
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Jackson, Montana, USA
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