May weather forecastHayden, ID
May
Weather in May
In May, Hayden, Idaho experiences a surge in temperature and longer sunlit days. With only a scant amount of snowfall—0.08" (2mm)—the emphasis shifts to rainfall, which slightly decreases to 1.77" (45mm) compared to April. The outdoor activities gain momentum as the surge in temperature is complemented by fewer rainfall days. A decrease in humidity can be felt during this month, indicating a divergence from the heavy, moisture-laden air of the preceding months. This drier environment, coupled with longer hours of sunshine, offers ideal conditions for outdoor adventures.Temperature
May's onset in Hayden brings a rise in the average high-temperature, moving from a fresh 52.5°F (11.4°C) in April to a refreshing 64.8°F (18.2°C). Hayden's nights in May are distinguished by a pronounced temperature shift from the day, with an average low of 39.6°F (4.2°C).Humidity
In May, the average relative humidity is 67%.Rainfall
In Hayden, in May, during 13.3 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, in Hayden, there are 141.2 rainfall days, and 22.6" (574mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 0.4 snowfall days, in May, Hayden aggregates 0.08" (2mm) of snow. In Hayden, Idaho, during the entire year, snow falls for 71.8 days and aggregates up to 56.54" (1436mm) of snow.Daylight
In Hayden, the average length of the day in May is 15h and 11min.On the first day of May in Hayden, sunrise is at 5:27 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 4:52 am and sunset at 8:37 pm PDT.
Sunshine
The average sunshine in May in Hayden is 9.8h.UV index
In Hayden, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 4 during May translates into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hayden, ID
- Average high temperature in May: 64.8°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in May: 39.6°F
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).
Average pressure in May
Hayden, ID
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in May
Hayden, ID
- Average wind speed in May: 4.6mph
The windiest month (with the highest average wind speed) is April (5mph).
The calmest month (with the lowest average wind speed) is December (3.9mph).
Average humidity in May
Hayden, ID
- Average humidity in May: 67%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (48%).
Average rainfall in May
Hayden, ID
- Average rainfall in May: 1.77"
The wettest month (with the highest rainfall) is January (3.27").
The driest months (with the least rainfall) are July and August (0.43").
Average rainfall days in May
Hayden, ID
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is August (5.6 days).
Average snowfall in May
Hayden, ID
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (16.57").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Hayden, ID
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Hayden, ID
- Average daylight in May: 15h and 12min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 9h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in May
Hayden, ID
- Average sunshine days in May: 16.2 days
The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.6 days).
Average UV index in May
Hayden, 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 February, November and December (UV index 1).
Average cloud cover in May
Hayden, ID
- Average cloud cover in May: 35
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Hayden, ID
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
