May weather forecastMount Shasta, CA
May
Weather in May
The last month of the spring, May, is an enjoyable month in Mount Shasta, California, with an average temperature varying between 63.3°F (17.4°C) and 39.2°F (4°C).Temperature
As May arrives, Mount Shasta's weather shows an increase in high-temperatures, moving from April's fresh 54°F (12.2°C) to a refreshing 63.3°F (17.4°C). Mount Shasta experiences a substantial divergence from daytime highs in May, with average lows hovering around a cold 39.2°F (4°C).Humidity
In Mount Shasta, the average relative humidity in May is 65%.Rainfall
In May, the rain falls for 10.4 days. Throughout May, 1.89" (48mm) of precipitation is accumulated. Throughout the year, there are 90.7 rainfall days, and 26.38" (670mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.9 snowfall days, in May, Mount Shasta aggregates 0.59" (15mm) of snow. Throughout the year, there are 50.2 snowfall days, and 81.42" (2068mm) of snow is accumulated.Daylight
In Mount Shasta, the average length of the day in May is 14h and 31min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:07 pm. On the last day of May, sunrise is at 5:38 am and sunset at 8:35 pm PDT.
Sunshine
In Mount Shasta, the average sunshine in May is 10.9h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 4 during May translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Mount Shasta, CA
- Average high temperature in May: 63.3°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (40.8°F).
- Average low temperature in May: 39.2°F
The month with the highest average low temperature is July (52.2°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).
Average pressure in May
Mount Shasta, CA
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).
Average wind speed in May
Mount Shasta, CA
- Average wind speed in May: 5mph
The windiest month (with the highest average wind speed) is March (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in May
Mount Shasta, CA
- Average humidity in May: 65%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is August (45%).
Average rainfall in May
Mount Shasta, CA
- Average rainfall in May: 1.89"
The wettest month (with the highest rainfall) is March (4.69").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in May
Mount Shasta, CA
- Average rainfall days in May: 10.4 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (2.3 days).
Average snowfall in May
Mount Shasta, CA
- Average snowfall in May: 0.59"
The month with the highest snowfall is January (19.21").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Mount Shasta, CA
- Average snowfall days in May: 0.9 days
The month with the highest number of snowfall days is December (10.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Mount Shasta, 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 18min).
- Average sunshine in May: 10h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in May
Mount Shasta, CA
- Average sunshine days in May: 19.3 days
The months with the most sunshine days are July and August (25.7 days).
The month with the least sunshine days is March (12.3 days).
Average UV index in May
Mount Shasta, 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
Mount Shasta, CA
- Average cloud cover in May: 26
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in May
Mount Shasta, CA
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
