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 rise in the average high-temperature is observed in Grangeville during May, moving from a cool 52.3°F (11.3°C) in April to a comfortable 62.6°F (17°C). Grangeville in May observes a substantial swing from the daily highs, with average nighttime temperatures of 38.8°F (3.8°C).Humidity
The average relative humidity in May is 71%.Rainfall
In Grangeville, in May, it is raining for 17.8 days, with typically 2.32" (59mm) of accumulated precipitation. Throughout the year, in Grangeville, Idaho, there are 146.2 rainfall days, and 23.35" (593mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows in Grangeville. During 1.3 snowfall days, in May, Grangeville aggregates 0.51" (13mm) of snow. In Grangeville, during the entire year, snow falls for 80.3 days and aggregates up to 60.47" (1536mm) of snow.Daylight
In May, the average length of the day is 14h and 58min.On the first day of the month, sunrise is at 5:30 am and sunset at 7:52 pm. On the last day of May, sunrise is at 4:57 am and sunset at 8:27 pm PDT.
Sunshine
In May, the average sunshine in Grangeville is 10.1h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 4 suggests these recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What are May temperatures in Grangeville?
What is the average humidity in May in Grangeville?
How much does it rain in Grangeville in May?
What is the last month it snows in Grangeville?
How many hours of daylight does Grangeville have in May?
What time are sunrise and sunset in May in Grangeville?
How many hours of sunshine does Grangeville have in May?
How high is the UV index in May in Grangeville?
Average temperature in May
Grangeville, ID
- Average high temperature in May: 62.6°F
The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is December (33.6°F).
- Average low temperature in May: 38.8°F
The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (21.7°F).
Average pressure in May
Grangeville, ID
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).
Average wind speed in May
Grangeville, ID
- Average wind speed in May: 4mph
The windiest months (with the highest average wind speed) are January and November (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in May
Grangeville, ID
- Average humidity in May: 71%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (47%).
Average rainfall in May
Grangeville, ID
- Average rainfall in May: 2.32"
The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in May
Grangeville, ID
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is April (19.3 days).
The month with the least rainy days is August (6.8 days).
Average snowfall in May
Grangeville, ID
- Average snowfall in May: 0.51"
The month with the highest snowfall is February (12.95").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Grangeville, ID
- Average snowfall days in May: 1.3 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
Grangeville, ID
- 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 1min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in May
Grangeville, ID
- Average sunshine days in May: 10.6 days
The month with the most sunshine days is August (22.2 days).
The month with the least sunshine days is March (7.5 days).
Average UV index in May
Grangeville, ID
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in May
Grangeville, ID
- Average cloud cover in May: 34
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
Grangeville, ID
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Grangeville, Idaho, USA
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