June weather forecastIsland Mountain, CA
June
Weather in June
June, the first month of the summer in Island Mountain, is still a refreshing month, with an average temperature fluctuating between 66.6°F (19.2°C) and 51.8°F (11°C).Temperature
Island Mountain's transition into June sees a mild rise in the average high-temperature, edging from a refreshing 61°F (16.1°C) in May to a still comfortable 66.6°F (19.2°C). Throughout June, an average nighttime temperature of 51.8°F (11°C) is experienced.Humidity
The average relative humidity in June is 75%.Rainfall
In June, the rain falls for 3.7 days. Throughout June, 0.43" (11mm) 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
With an average of 15h and 0min of daylight, June has the longest days of the year.On the first day of June, sunrise is at 5:46 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:46 pm PDT.
Sunshine
The average sunshine in June in Island Mountain is 11.2h.UV index
June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In June, a daily maximum UV index of 5 leads to the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Island Mountain, CA
- Average high temperature in June: 66.6°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 June: 51.8°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 June
Island Mountain, CA
- Average pressure in June: 29.96"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 June
Island Mountain, CA
- Average wind speed in June: 10.6mph
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 June
Island Mountain, CA
- Average humidity in June: 75%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is September (72%).
Average rainfall in June
Island Mountain, CA
- Average rainfall in June: 0.43"
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 June
Island Mountain, CA
- Average rainfall days in June: 3.7 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 June
Island Mountain, CA
- Average snowfall days in June: 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 June /
Average sunshine in June
Island Mountain, CA
- Average daylight in June: 15h and 0min
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 June: 11h 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 June
Island Mountain, CA
- Average sunshine days in June: 25.3 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 June
Island Mountain, CA
- Average UV index in June: 5
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 June
Island Mountain, CA
- Average cloud cover in June: 18
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 June
Island Mountain, CA
- Average visibility in June: 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).





