July weather forecastHercules, CA
July
Weather in July
July, the same as June, is another warm summer month in Hercules, California, with an average temperature varying between 76.6°F (24.8°C) and 55.4°F (13°C).Temperature
July's beginning signals an average high-temperature of a still moderately hot 76.6°F (24.8°C), barely different from June's 74.8°F (23.8°C). In Hercules, the nighttime temperature averages to a moderate 55.4°F (13°C) during July.Humidity
In Hercules, the average relative humidity in July is 67%.Rainfall
July and August are months with the least rain in Hercules when the rain falls for 1.7 days and typically aggregates up to 0.04" (1mm) of rain.Ocean temperature
In July, the average ocean temperature in Hercules is 55.4°F (13°C).Note: Being in 55.4°F (13°C) waters at 55.4°F (13°C) is discomforting, but anything below 50°F (10°C) can jeopardize breathing and induce cold shock, factoring in physical endurance.
Daylight
The average length of the day in July is 14h and 29min.On the first day of July, sunrise is at 5:50 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:18 pm PDT.
Sunshine
With an average of 11.9h of sunshine, July has the most sunshine of the year.UV index
April through September, with an average maximum UV index of 5, are months with the highest UV index in Hercules. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In July, the average maximum UV index of 5 translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. When the Sun is at its strongest around midday, find shade and limit exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Hercules, CA
- Average high temperature in July: 76.6°F
The warmest month (with the highest average high temperature) is September (77.5°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 (56.8°F).
The coldest months (with the lowest average low temperature) are January and December (43.9°F).
Average pressure in July
Hercules, CA
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in July
Hercules, CA
- Average wind speed in July: 6.8mph
The windiest month (with the highest average wind speed) is May (7.5mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).
Average humidity in July
Hercules, CA
- Average humidity in July: 67%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (63%).
Average rainfall in July
Hercules, CA
- Average rainfall in July: 0.04"
The wettest month (with the highest rainfall) is February (2.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in July
Hercules, CA
- Average rainfall days in July: 1.7 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (1.1 days).
Average sea temperature in July
Hercules, CA
- Average sea temperature in July: 55.3°F
The best month for swimming (with the highest average sea temperature) is September (57°F).
The coldest month (with the lowest average sea temperature) is April (52.6°F).
Average daylight in July /
Average sunshine in July
Hercules, CA
- Average daylight in July: 14h and 30min
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: 11h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in July
Hercules, CA
- Average sunshine days in July: 26.8 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (16.4 days).
Average UV index in July
Hercules, CA
- Average UV index in July: 5
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in July
Hercules, CA
- Average cloud cover in July: 12
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in July
Hercules, 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).
