July weather forecast
Fairfield, CA

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Weather in July

July in Fairfield, California, is a hot summer month, with an average temperature varying between 56.1°F (13.4°C) and 87.4°F (30.8°C).

Temperature

July, recording an average high temperature of 87.4°F (30.8°C) and a low temperature of 56.1°F (13.4°C), is Fairfield's warmest month.

Heat index

July's heat index is appraised at a hot 91.4°F (33°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In Fairfield, the average relative humidity in July is 55%.

Rainfall

July is the last month it rains in Fairfield. During 1.1 rainfall days, in July, Fairfield aggregates 0.04" (1mm) of precipitation. Throughout the year, there are 71.4 rainfall days, and 12.13" (308mm) of precipitation is accumulated.

Daylight

The average length of the day in July is 14h and 31min.
On the first day of the month, sunrise is at 5:48 am and sunset at 8:35 pm. On the last day of July, sunrise is at 6:10 am and sunset at 8:18 pm PDT.

Sunshine

The month with the most sunshine is July, with an average of 12.1h of sunshine.

UV index

The months with the highest UV index in Fairfield are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: In July, the maximum UV index of 6 suggests this advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

What time of the year is the hottest in Fairfield?

July, with an average high of 87.4°F (30.8°C) and a low of 56.1°F (13.4°C), signifies the warmest month of the year.

Is it hot in Fairfield during July?

In July, the average high-temperature and low-temperature in Fairfield are 87.4°F (30.8°C) and 56.1°F (13.4°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in July is appraised at 91.4°F (33°C).

What is the average humidity in July in Fairfield?

In July, the average relative humidity is 55%.

What is the last month it rains in Fairfield?

July is the last month it rains. During 1.1 rainfall days, in July, Fairfield aggregates 0.04" (1mm) of precipitation.

What is the average length of the day in July in Fairfield?

In Fairfield, the average day length in July is 14h and 31min.

What time are sunrise and sunset in July in Fairfield?

In July, on the first day of the month, sunrise is at 5:48 am and sunset at 8:35 pm. On the last day of the month, in Fairfield, California, sunrise is at 6:10 am and sunset at 8:18 pm PDT.

What month has the most sunshine in Fairfield?

July has the most sunshine of the year in Fairfield, California, with an average of 12.1h of sunshine.

How many hours of sunshine does Fairfield have in July?

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

What is the month with the highest UV index in Fairfield?

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

How high is the UV index in July in Fairfield?

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

Average temperature in July
Fairfield, CA

Average temperature in July - Fairfield, CA
  • Average high temperature in July: 87.4°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is December (54.9°F).

  • Average low temperature in July: 56.1°F

The month with the highest average low temperature is September (57.6°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in July
Fairfield, CA

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).

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Average wind speed in July
Fairfield, CA

Average wind speed in July - Fairfield, CA
  • Average wind speed in July: 7mph

The windiest months (with the highest average wind speed) are May, June and July (7mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).

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Average humidity in July
Fairfield, CA

Average humidity in July - Fairfield, CA
  • Average humidity in July: 55%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (52%).

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Average rainfall in July
Fairfield, CA

Average rainfall in July - Fairfield, CA
  • Average rainfall in July: 0.04"

The wettest month (with the highest rainfall) is February (2.4").
The driest month (with the least rainfall) is August (0").

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Average rainfall days in July
Fairfield, CA

Average rainfall days in July - Fairfield, CA
  • Average rainfall days in July: 1.1 days

The month with the highest number of rainy days is March (12.9 days).
The month with the least rainy days is August (0.7 days).

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Average daylight in July /
Average sunshine in July
Fairfield, CA

Average daylight in July / Average sunshine in July - Fairfield, CA
  • Average daylight in July: 14h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in July: 12h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in July
Fairfield, CA

Average sunshine days in July - Fairfield, CA
  • Average sunshine days in July: 29.9 days

The month with the most sunshine days is August (30.2 days).
The month with the least sunshine days is March (17 days).

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Average UV index in July
Fairfield, CA

Average UV index in July - Fairfield, CA
  • Average UV index in July: 6

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

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Average cloud cover in July
Fairfield, CA

Average cloud cover in July - Fairfield, CA
  • Average cloud cover in July: 5

The months with the most cloud cover are March and December (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in July
Fairfield, CA

Average visibility in July - Fairfield, 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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Fairfield, California, USA

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