May weather forecastAlturas, CA
May
Weather in May
The last month of the spring, May, is an enjoyable month in Alturas, California, with an average temperature fluctuating between 39.4°F (4.1°C) and 62.4°F (16.9°C).Temperature
With the onset of May, Alturas sees a temperature rise, with the average high-temperature moving from April's fresh 52.7°F (11.5°C) to a comfortable 62.4°F (16.9°C). Alturas's average nighttime temperature descends significantly from the day's peak in May, settling at a wintry 39.4°F (4.1°C).Humidity
In May, the average relative humidity is 55%.Rainfall
In Alturas, in May, during 11.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 91.1 rainfall days, and 12.64" (321mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Alturas, during May, snow falls for 1.3 days and regularly aggregates up to 0.39" (10mm) of snow. Throughout the year, there are 60.7 snowfall days, and 39.53" (1004mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 32min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:30 am and sunset at 8:29 pm PDT.
Sunshine
The average sunshine in May is 10.8h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 during May translates into the following guidance:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Alturas, CA
- Average high temperature in May: 62.4°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in May: 39.4°F
The month with the highest average low temperature is July (52.5°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in May
Alturas, CA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Alturas, CA
- Average wind speed in May: 7.6mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Alturas, CA
- Average humidity in May: 55%
The months with the highest relative humidity are January and December (79%).
The month with the lowest relative humidity is August (34%).
Average rainfall in May
Alturas, CA
- Average rainfall in May: 1.22"
The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in May
Alturas, CA
- Average rainfall days in May: 11.5 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is July (2.5 days).
Average snowfall in May
Alturas, CA
- Average snowfall in May: 0.39"
The month with the highest snowfall is December (9.02").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Alturas, CA
- Average snowfall days in May: 1.3 days
The month with the highest number of snowfall days is December (12.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Alturas, CA
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 10h and 48min
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 24min).
Average sunshine days in May
Alturas, CA
- Average sunshine days in May: 17.8 days
The months with the most sunshine days are July and August (26.3 days).
The month with the least sunshine days is March (12.8 days).
Average UV index in May
Alturas, CA
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Alturas, CA
- Average cloud cover in May: 27
The months with the most cloud cover are March and December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in May
Alturas, CA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
