July weather forecast
Simi Valley, CA

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The Simi Valley city in California, with a view of the scenic Rocky Peak and hilly ranges
The Simi Valley city in California, with a view of the scenic Rocky Peak and hilly ranges

Weather in July

July, the same as June, is a moderately hot summer month in Simi Valley, California, with an average temperature varying between 61.9°F (16.6°C) and 80.8°F (27.1°C).

Temperature

The shift into July records an average high-temperature of a still moderately hot 80.8°F (27.1°C), subtly varied from June's 75.6°F (24.2°C). Simi Valley anticipates an average minimum temperature of 61.9°F (16.6°C) in the month of July.

Heat index

The heat index in July is evaluated at 82.4°F (28°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

In Simi Valley, the average relative humidity in July is 59%.

Rainfall

In Simi Valley, in July, during 3.7 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Simi Valley, during the entire year, the rain falls for 53.7 days and collects up to 9.61" (244mm) of precipitation.

Daylight

In July, the average length of the day is 14h and 11min.
On the first day of the month, sunrise is at 5:47 am and sunset at 8:11 pm. On the last day of July, sunrise is at 6:05 am and sunset at 7:57 pm PDT.

Sunshine

June and July, with an average of 12.1h of sunshine, are months with the most sunshine in Simi Valley.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Simi Valley. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In July, a regular UV index of 6 translates into these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What is the usual temperature for Simi Valley in July?

The high-temperature, in July, in Simi Valley, records 80.8°F (27.1°C), while the low-temperature is 61.9°F (16.6°C). In July, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 82.4°F (28°C).

What is the average humidity in July in Simi Valley?

In Simi Valley, the average relative humidity in July is 59%.

How much does it rain in Simi Valley in July?

In Simi Valley, California, in July, during 3.7 rainfall days, 0.24" (6mm) of precipitation is typically accumulated.

What is the average length of the day in July in Simi Valley?

In July, the average day length is 14h and 11min.

When is the sunrise / sunset in July in Simi Valley?

In July, on the first day of the month, sunrise is at 5:47 am and sunset at 8:11 pm. On the last day of the month, in Simi Valley, sunrise is at 6:05 am and sunset at 7:57 pm PDT.

What is the month with the most sunshine in Simi Valley?

The months with the most sunshine in Simi Valley are June and July, with an average of 12.1h of sunshine.

How long on average sun shines in July in Simi Valley?

In Simi Valley, California, the average sunshine duration in July is 12.1h.

What is the month with the highest UV index in Simi Valley?

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

What is the UV index intensity in July in Simi Valley?

In Simi Valley, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Simi Valley, CA

Average temperature in July - Simi Valley, CA
  • Average high temperature in July: 80.8°F

The warmest month (with the highest average high temperature) is August (82.2°F).
The month with the lowest average high temperature is December (60.1°F).

  • Average low temperature in July: 61.9°F

The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (46.4°F).

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Average pressure in July
Simi Valley, CA

Average pressure in July - Simi Valley, CA
  • Average pressure in July: 29.92"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).

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Average wind speed in July
Simi Valley, CA

Average wind speed in July - Simi Valley, CA
  • Average wind speed in July: 4.6mph

The windiest month (with the highest average wind speed) is December (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in July
Simi Valley, CA

Average humidity in July - Simi Valley, CA
  • Average humidity in July: 59%

The month with the highest relative humidity is June (62%).
The month with the lowest relative humidity is November (50%).

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Average rainfall in July
Simi Valley, CA

Average rainfall in July - Simi Valley, CA
  • Average rainfall in July: 0.24"

The wettest month (with the highest rainfall) is February (1.93").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in July
Simi Valley, CA

Average rainfall days in July - Simi Valley, CA
  • Average rainfall days in July: 3.7 days

The month with the highest number of rainy days is March (8 days).
The months with the least rainy days are June and August (1.5 days).

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Average daylight in July /
Average sunshine in July
Simi Valley, CA

Average daylight in July / Average sunshine in July - Simi Valley, 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 months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).

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Average sunshine days in July
Simi Valley, CA

Average sunshine days in July - Simi Valley, CA
  • Average sunshine days in July: 23.3 days

The month with the most sunshine days is August (25.4 days).
The month with the least sunshine days is February (20.9 days).

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Average UV index in July
Simi Valley, CA

Average UV index in July - Simi Valley, CA
  • Average UV index in July: 6

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

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Average cloud cover in July
Simi Valley, CA

Average cloud cover in July - Simi Valley, CA
  • Average cloud cover in July: 7

The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in July
Simi Valley, CA

Average visibility in July - Simi Valley, 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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Simi Valley, California, USA

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