May weather forecastIsland Mountain, CA
May
Weather in May
May, the last month of the spring in Island Mountain, is a comfortable month, with an average temperature fluctuating between 48.4°F (9.1°C) and 61°F (16.1°C).Temperature
May brings an average high-temperature of a still refreshing 61°F (16.1°C), nearly identical to the preceding month. May nights observe an average temperature dip to a chilly 48.4°F (9.1°C).Humidity
In Island Mountain, the average relative humidity in May is 78%.Rainfall
In May, the rain falls for 6.6 days. Throughout May, 1.73" (44mm) of precipitation is accumulated. Throughout the year, there are 102.7 rainfall days, and 28.78" (731mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall.Daylight
In May, the average length of the day is 14h and 25min.On the first day of May, sunrise is at 6:12 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:36 pm PDT.
Sunshine
The average sunshine in May is 10.2h.UV index
In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 during May translates into the following directions:
Put precautions into practice - Guidance to elude sunburn is provided. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Island Mountain, CA
- Average high temperature in May: 61°F
The warmest month (with the highest average high temperature) is September (69.8°F).
The month with the lowest average high temperature is December (53.4°F).
- Average low temperature in May: 48.4°F
The months with the highest average low temperature are July, August and September (54.3°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).
Average pressure in May
Island Mountain, CA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are August and September (29.95"Hg).
Average wind speed in May
Island Mountain, CA
- Average wind speed in May: 9.5mph
The windiest month (with the highest average wind speed) is June (10.6mph).
The calmest months (with the lowest average wind speed) are January and August (7.8mph).
Average humidity in May
Island Mountain, CA
- Average humidity in May: 78%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is September (72%).
Average rainfall in May
Island Mountain, CA
- Average rainfall in May: 1.73"
The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in May
Island Mountain, CA
- Average rainfall days in May: 6.6 days
The month with the highest number of rainy days is March (16.4 days).
The month with the least rainy days is August (1.8 days).
Average snowfall days in May
Island Mountain, CA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Island Mountain, CA
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 10h and 12min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in May
Island Mountain, CA
- Average sunshine days in May: 22.8 days
The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is March (13.1 days).
Average UV index in May
Island Mountain, CA
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in May
Island Mountain, CA
- Average cloud cover in May: 29
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in May
Island Mountain, CA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
