May weather forecastFairfield, ID
May
Weather in May
May, the last month of the spring in Fairfield, is a refreshing month, with an average temperature varying between 39.7°F (4.3°C) and 60.4°F (15.8°C).Temperature
May's arrival coincides with a rise in the average high-temperature, moving from April's fresh 50°F (10°C) to a mild 60.4°F (15.8°C). Fairfield witnesses a consistent average low-temperature of 39.7°F (4.3°C) throughout May.Humidity
The average relative humidity in May is 54%.Rainfall
In Fairfield, during May, the rain falls for 12 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, there are 74.4 rainfall days, and 8.03" (204mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.4 snowfall days, in May, Fairfield aggregates 0.2" (5mm) of snow. In Fairfield, during the entire year, snow falls for 44.1 days and aggregates up to 29.65" (753mm) of snow.Daylight
In May, the average length of the day is 14h and 43min.On the first day of the month, sunrise is at 6:30 am and sunset at 8:41 pm. On the last day of May, sunrise is at 6:01 am and sunset at 9:12 pm MDT.
Sunshine
In Fairfield, the average sunshine in May is 11.1h.UV index
The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fairfield, ID
- Average high temperature in May: 60.4°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 (27.9°F).
- Average low temperature in May: 39.7°F
The months with the highest average low temperature are July and August (55.6°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in May
Fairfield, ID
- Average pressure in May: 29.9"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Fairfield, ID
- Average wind speed in May: 7.2mph
The windiest months (with the highest average wind speed) are April and June (7.6mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity in May
Fairfield, ID
- Average humidity in May: 54%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (32%).
Average rainfall in May
Fairfield, ID
- Average rainfall in May: 0.98"
The wettest month (with the highest rainfall) is February (1.02").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in May
Fairfield, ID
- Average rainfall days in May: 12 days
The month with the highest number of rainy days is May (12 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in May
Fairfield, ID
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (7.87").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Fairfield, ID
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Fairfield, ID
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 11h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).
Average sunshine days in May
Fairfield, ID
- Average sunshine days in May: 15.6 days
The month with the most sunshine days is October (23.5 days).
The month with the least sunshine days is May (15.6 days).
Average UV index in May
Fairfield, ID
- 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
Fairfield, ID
- Average cloud cover in May: 23
The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in May
Fairfield, ID
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
