July weather forecast
Mount Wilson, CA

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Weather in July

July, the same as June, is another warm summer month in Mount Wilson, California, with an average temperature ranging between max 85.1°F (29.5°C) and min 63.1°F (17.3°C).

Temperature

Mount Wilson's weather shows a minor temperature rise with the arrival of July, moving from a moderately hot 79.5°F (26.4°C) in June to a still warm 85.1°F (29.5°C). Mount Wilson experiences a significant downturn from peak daytime temperatures throughout July, with the average low-temperature dipping to a refreshing 63.1°F (17.3°C).

Heat index

The heat index for July is evaluated at a tropical 86°F (30°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.
For clarity, heat index numbers account for light winds and areas under shade. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

The average relative humidity in July in Mount Wilson is 48%.

Rainfall

In Mount Wilson, during July, the rain falls for 4.5 days and regularly aggregates up to 0.35" (9mm) of precipitation. In Mount Wilson, during the entire year, the rain falls for 50.3 days and collects up to 8.7" (221mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in July in Mount Wilson is 14h and 10min.
On the first day of the month, sunrise is at 5:44 am and sunset at 8:08 pm. On the last day of July, in Mount Wilson, sunrise is at 6:03 am and sunset at 7:54 pm PDT.

Sunshine

With an average of 12.1h of sunshine, July has the most sunshine of the year in Mount Wilson.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 during July translates into the following guidance:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

How hot does it get in Mount Wilson in July?

The high-temperature, in July, in Mount Wilson, records 85.1°F (29.5°C), while the low-temperature is 63.1°F (17.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in July is evaluated at 86°F (30°C).

What is the average humidity in July in Mount Wilson?

In July, the average relative humidity is 48%.

How many days does it rain in July in Mount Wilson?

In July, in Mount Wilson, California, the rain falls for 4.5 days. Throughout July, 0.35" (9mm) of precipitation is accumulated.

When it does not snow in Mount Wilson?

In Mount Wilson, snow does not fall in May through October.

What is the average length of the day in July in Mount Wilson?

The average day length in July in Mount Wilson is 14h and 10min.

When are sunrise and sunset in July in Mount Wilson?

In July, on the first day of the month, sunrise is at 5:44 am and sunset at 8:08 pm. On the last day of the month, in Mount Wilson, California, sunrise is at 6:03 am and sunset at 7:54 pm PDT.

What month has the most sunshine in Mount Wilson?

July has the most sunshine of the year in Mount Wilson, with an average of 12.1h of sunshine.

How many hours of sunshine does Mount Wilson have in July?

In July, the average sunshine duration in Mount Wilson is 12.1h.

When is the highest UV index in Mount Wilson?

June through September, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in July in Mount Wilson?

In July, the average daily maximum UV index in Mount Wilson, California, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Mount Wilson, CA

Average temperature in July - Mount Wilson, CA
  • Average high temperature in July: 85.1°F

The warmest month (with the highest average high temperature) is August (86.2°F).
The month with the lowest average high temperature is December (58.5°F).

  • Average low temperature in July: 63.1°F

The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (43.3°F).

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Average pressure in July
Mount Wilson, CA

Average pressure in July - Mount Wilson, CA
  • Average pressure in July: 29.91"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in July
Mount Wilson, CA

Average wind speed in July - Mount Wilson, CA
  • Average wind speed in July: 5.1mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in July
Mount Wilson, CA

Average humidity in July - Mount Wilson, CA
  • Average humidity in July: 48%

The month with the highest relative humidity is March (56%).
The month with the lowest relative humidity is August (45%).

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Average rainfall in July
Mount Wilson, CA

Average rainfall in July - Mount Wilson, CA
  • Average rainfall in July: 0.35"

The wettest month (with the highest rainfall) is February (1.73").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in July
Mount Wilson, CA

Average rainfall days in July - Mount Wilson, CA
  • Average rainfall days in July: 4.5 days

The month with the highest number of rainy days is March (6.4 days).
The month with the least rainy days is June (1.3 days).

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Average snowfall in July
Mount Wilson, CA

Average snowfall in July - Mount Wilson, CA
  • Average snowfall in July: 0"

The month with the highest snowfall is December (2.99").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in July
Mount Wilson, CA

Average snowfall days in July - Mount Wilson, CA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in July /
Average sunshine in July
Mount Wilson, CA

Average daylight in July / Average sunshine in July - Mount Wilson, CA
  • Average daylight in July: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in July: 12h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).

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Average sunshine days in July
Mount Wilson, CA

Average sunshine days in July - Mount Wilson, CA
  • Average sunshine days in July: 24.2 days

The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (21.4 days).

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Average UV index in July
Mount Wilson, CA

Average UV index in July - Mount Wilson, CA
  • Average UV index in July: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are November and December (UV index 3).

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Average cloud cover in July
Mount Wilson, CA

Average cloud cover in July - Mount Wilson, CA
  • Average cloud cover in July: 6

The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in July
Mount Wilson, CA

Average visibility in July - Mount Wilson, CA
  • Average visibility in July: 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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Mount Wilson, California, USA

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