Vallejo, CA Weather
Vallejo, CA climate is warm during summer when temperatures tend to be in the 70's and cold during winter when temperatures tend to be in the 40's.
The warmest month of the year is July with an average maximum temperature of 87.40 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 38.50 degrees Fahrenheit.
Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 32 degrees Fahrenheit, and fairly limited during winter with an average difference of 16 degrees Fahrenheit.
The annual average precipitation at Vallejo is 19.58 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 4.25 Inches.
Weather Data
Current Conditions
|
Fair, 42°F | Humidity: 92% | Dewpoint: 40°F |
| Wind Speed: CALM | Heat Index: 42°F | ||
| Barometer: 30.07 in. | Wind Chill: 42°F |
Weather Forecast
 | Tonight: Mostly clear. Colder. Lows 36 to 44. Northwest winds up to 10 mph this evening becoming light. | |
| Lo: 41°F | ||
 | Hi: 67°F | Sunday: Mostly sunny. Highs 63 to 69. Northwest winds around 10 mph. |
| Lo: 42°F | ||
 | Hi: 65°F | Monday: Mostly sunny in the morning then becoming partly cloudy. Highs 61 to 68. Light winds. |
| Lo: 45°F | ||
 | Hi: 65°F | Tuesday: Mostly cloudy. Highs around 65. |
| Lo: 46°F | ||
 | Hi: 63°F | Thursday: Mostly cloudy with a slight chance of rain showers. Highs 59 to 65. Lows 42 to 48. |
| Lo: 46°F | ||
| Hi: 63°F | Thursday: Mostly cloudy with a slight chance of rain showers. Highs 59 to 65. Lows 42 to 48. |
| Lo: 44°F | ||
| Hi: 67°F | Friday: Mostly sunny. Highs around 67. |
| Lo: 45°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waning Gibbous Moon | Civil Twilight: 6:13 AM PST |
Sunrise: 6:40 AM PST |
| Sunset: 5:03 PM PST |
Civil Twilight: 5:31 PM PST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 53.7 | 59.5 | 64.3 | 70.9 | 77.7 | 83.9 | 87.4 | 86.6 | 83.3 | 75.5 | 62.7 | 54.5 | 71.7 |
| Mean °F | 46.3 | 50.7 | 54.3 | 58.5 | 63.7 | 68.9 | 71.2 | 70.8 | 68.6 | 62.5 | 53.0 | 46.5 | 59.6 |
| Min °F | 38.8 | 41.8 | 44.3 | 46.1 | 49.7 | 53.8 | 54.9 | 55.0 | 53.8 | 49.5 | 43.3 | 38.5 | 47.5 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 4.25 | 3.81 | 3.24 | 1.04 | 0.46 | 0.12 | 0.02 | 0.08 | 0.24 | 0.94 | 2.59 | 2.79 | 19.58 |
