Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
In Port Costa, the months of July and September register the highest average temperatures, peaking at 80.1°F (26.7°C).Humidity
In Port Costa, the average relative humidity in July is 63%.Rainfall
The months with the least rainfall are July and August Rain falls for 1.5 days and accumulates 0.04" (1mm) of rain.Daylight
In July, the average length of the day is 14h and 30min.On the first day of the month, sunrise is at 5:50 am and sunset at 8:35 pm. On the last day of July, sunrise is at 6:11 am and sunset at 8:18 pm PDT.
Sunshine
With an average of 12h of sunshine, July has the most sunshine of the year.UV index
The average daily maximum UV index in July is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 5 in July translates into this advice:
Take necessary precautions - Suggestions to elude sunburn are provided. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest?
What are July temperatures?
What is the average humidity in July in Port Costa?
What is the driest month?
How much does it rain in Port Costa in July?
What is the average length of the day in July?
When are sunrise and sunset in July?
What month has the most sunshine?
How long on average sun shines in July?
What is the UV index reading in July in Port Costa?
Average temperature in July
Port Costa, CA
- Average high temperature in July: 80.1°F
The warmest months (with the highest average high temperature) are July and September (80.1°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in July: 55.4°F
The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (43°F).
Average pressure in July
Port Costa, CA
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Port Costa, CA
- Average wind speed in July: 6.6mph
The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in July
Port Costa, CA
- Average humidity in July: 63%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (60%).
Average rainfall in July
Port Costa, CA
- Average rainfall in July: 0.04"
The wettest month (with the highest rainfall) is February (1.14").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in July
Port Costa, CA
- Average rainfall days in July: 1.5 days
The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.9 days).
Average daylight in July /
Average sunshine in July
Port Costa, 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 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in July
Port Costa, CA
- Average sunshine days in July: 27.2 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (18.8 days).
Average UV index in July
Port Costa, CA
- Average UV index in July: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in July
Port Costa, CA
- Average cloud cover in July: 9
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in July
Port Costa, 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).
Port Costa, California, USA
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