May weather forecastDeclo, ID
May
Weather in May
May, the last month of the spring in Declo, is a comfortable month, with an average temperature varying between 44.1°F (6.7°C) and 66.6°F (19.2°C).Temperature
Declo's transition into May sees a rise in the average high-temperature, advancing from a moderate 55.6°F (13.1°C) in April to an enjoyable 66.6°F (19.2°C). Declo reports a sharp reduction in temperature during May, averaging at a chilly 44.1°F (6.7°C) at night.Humidity
In Declo, the average relative humidity in May is 47%.Rainfall
In Declo, in May, it is raining for 12.3 days, with typically 1.06" (27mm) of accumulated precipitation. Throughout the year, there are 105.2 rainfall days, and 10.63" (270mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 0.6 snowfall days, in May, Declo aggregates 0.35" (9mm) of snow. Throughout the year, there are 50.9 snowfall days, and 24.57" (624mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 38min.On the first day of May, sunrise is at 6:28 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 9:04 pm MDT.
Sunshine
The average sunshine in May is 10.9h.UV index
In Declo, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 5 during May translates into the following guidance:
Ensure safety - Sun damage prevention is strongly urged. Direct Sun exposure should be minimized especially during midday when radiation is most intense. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Declo, ID
- Average high temperature in May: 66.6°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in May: 44.1°F
The months with the highest average low temperature are July and August (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.6°F).
Average pressure in May
Declo, ID
- Average pressure in May: 29.89"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Declo, ID
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is January (7.1mph).
Average humidity in May
Declo, ID
- Average humidity in May: 47%
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (30%).
Average rainfall in May
Declo, ID
- Average rainfall in May: 1.06"
The wettest month (with the highest rainfall) is March (1.46").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in May
Declo, ID
- Average rainfall days in May: 12.3 days
The months with the highest number of rainy days are March and April (14 days).
The months with the least rainy days are July and August (5.2 days).
Average snowfall in May
Declo, ID
- Average snowfall in May: 0.35"
The month with the highest snowfall is December (6.54").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Declo, ID
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is December (13 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Declo, ID
- Average daylight in May: 14h and 36min
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 6min).
- Average sunshine in May: 10h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in May
Declo, ID
- Average sunshine days in May: 15.5 days
The month with the most sunshine days is July (22.6 days).
The month with the least sunshine days is March (12 days).
Average UV index in May
Declo, ID
- 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
Declo, ID
- Average cloud cover in May: 24
The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in May
Declo, ID
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
