May weather forecastRupert, ID
May
Weather in May
As we enter the midst of spring, May brings with it a fresh sense of vibrancy in Rupert. Home to the year's third highest UV index at 5, the sun graces the city longer, warming up the days. Idyllic conditions provide an excellent setting for outdoor activities while the cooler evenings keep the overall atmosphere pleasantly balanced. As spring fades into summer, the forecast for June suggests even more favorable weather conditions ahead.Temperature
Rupert's transition into May is marked by a temperature shift, moving from 55.6°F (13.1°C) in April to a still refreshing 66.6°F (19.2°C). Rupert logs a substantial downturn to a chilly 44.1°F (6.7°C) during May nights, a considerable shift from daytime highs.Humidity
The average relative humidity in May is 47%.Rainfall
In May, in Rupert, the rain falls for 12.3 days. Throughout May, 1.06" (27mm) of precipitation is accumulated. 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 in Rupert, Idaho. During 0.6 snowfall days, in May, Rupert aggregates 0.35" (9mm) of snow. In Rupert, during the entire year, snow falls for 50.9 days and aggregates up to 24.57" (624mm) of snow.Daylight
In May, the average length of the day in Rupert is 14h and 38min.On the first day of the month, sunrise is at 6:28 am and sunset at 8:35 pm. On the last day of May, in Rupert, Idaho, sunrise is at 5:59 am and sunset at 9:05 pm MDT.
Sunshine
In May, the average sunshine is 10.9h.UV index
In May, the average daily maximum UV index in Rupert, Idaho, is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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
Rupert, 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).
