May weather forecast
Island Mountain, CA

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Weather in May

The last month of the spring, May, is a comfortable month in Island Mountain, California, with an average temperature fluctuating between 48.4°F (9.1°C) and 61°F (16.1°C).

Temperature

Island Mountain, California, registers an average high-temperature of a still refreshing 61°F (16.1°C) with the arrival of May, showing minor deviation from the preceding month. During the nights in May, Island Mountain experiences a consistent average temperature of 48.4°F (9.1°C).

Humidity

The average relative humidity in May in Island Mountain 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 Island Mountain, the average length of the day in May is 14h and 25min.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:09 pm. On the last day of May, sunrise is at 5:47 am and sunset at 8:36 pm PDT.

Sunshine

In Island Mountain, the average sunshine in May is 10.2h.

UV index

The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 4 in May transforms into the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

What is the temperature in May in Island Mountain?

In Island Mountain, 61°F (16.1°C) is the average high-temperature and 48.4°F (9.1°C) is the average low-temperature during May.

What is the average humidity in May in Island Mountain?

In May, the average relative humidity in Island Mountain is 78%.

How many days does it rain in May in Island Mountain?

In Island Mountain, California, in May, during 6.6 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

When it does not snow in Island Mountain?

In Island Mountain, snow does not fall in January, March through December.

How many hours of daylight does Island Mountain have in May?

In May, the average day length in Island Mountain, California, is 14h and 25min.

What time are sunrise and sunset in May in Island Mountain?

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.

How many hours of sunshine does Island Mountain have in May?

In May, the average sunshine duration is 10.2h.

What is the UV index intensity in May in Island Mountain?

The average daily maximum UV index in May in Island Mountain is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Island Mountain, CA

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).

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Average pressure in May
Island Mountain, CA

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).

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Average wind speed in May
Island Mountain, CA

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).

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Average humidity in May
Island Mountain, CA

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%).

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Average rainfall in May
Island Mountain, CA

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").

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Average rainfall days in May
Island Mountain, CA

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).

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Average snowfall days in May
Island Mountain, CA

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).

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Average daylight in May /
Average sunshine in May
Island Mountain, CA

Average daylight in May / Average sunshine in May - Island Mountain, CA
  • Average daylight in May: 14h and 2min

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 1min

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).

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Average sunshine days in May
Island Mountain, CA

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).

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Average UV index in May
Island Mountain, CA

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).

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Average cloud cover in May
Island Mountain, CA

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).

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Average visibility in May
Island Mountain, CA

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).

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Island Mountain, California, USA

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