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
Vallejo witnesses its peak temperatures during July and September, when the average high-temperature reaches 80.1°F (26.7°C).Humidity
The average relative humidity in July is 63%.Rainfall
July and August are months with the least rain when the rain falls for 1.5 days and typically aggregates up to 0.04" (1mm) of rain.Daylight
In Vallejo, the average length of the day in July is 14h and 30min.On the first day of July in Vallejo, sunrise is at 5:50 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:19 pm PDT.
Sunshine
The month with the most sunshine is July, with an average of 12h of sunshine.UV index
In July, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In July, the maximum UV index of 5 translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month?
What is the average July temperature in Vallejo?
What is the average humidity in July?
What is the driest month?
How much does it rain in July?
What is the average length of the day in July?
What time are sunrise and sunset in July?
What month has the most sunshine?
How many hours of sunshine does Vallejo have in July?
How high is the UV index in July in Vallejo?
Average temperature in July
Vallejo, 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
Vallejo, 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
Vallejo, 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
Vallejo, 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
Vallejo, 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
Vallejo, 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
Vallejo, 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
Vallejo, 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
Vallejo, 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
Vallejo, 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
Vallejo, 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).
Vallejo, California, USA
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