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Vallejo, CA 94591 Weather
Current conditions
Observed at Fairfield / Travis Air Force Base · 1 hr ago
Forecast
10-day-
This Afternoon
A chance of rain after 5pm. Cloudy. High near 69, with temperatures falling to around 67 in the afternoon. Southwest wind around 3 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
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Tonight
A chance of rain. Mostly cloudy, with a low around 55. West northwest wind around 2 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
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Thursday
Rain likely before 4pm. Mostly cloudy. High near 65, with temperatures falling to around 63 in the afternoon. South southwest wind 2 to 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
National Weather Service forecast updated 2 hrs ago.
Hourly
Hourly forecast- Now67°12%
- 5 PM67°43%
- 6 PM66°42%
- 7 PM63°31%
- 8 PM62°47%
- 9 PM61°51%
- 10 PM60°26%
- 11 PM59°19%
- Thu12 AM59°28%
- 1 AM58°34%
- 2 AM57°40%
- 3 AM57°50%
- 4 AM56°38%
- 5 AM56°37%
- 6 AM56°36%
- 7 AM56°45%
- 8 AM55°39%
- 9 AM57°49%
- 10 AM59°50%
- 11 AM60°62%
- 12 PM62°54%
- 1 PM63°37%
- 2 PM63°36%
- 3 PM64°16%
Daily forecast
Details- TodayOct 21Chance Light Rain51%55°69°
- ThuOct 22Light Rain Likely62%52°65°
- FriOct 23Mostly Sunny49°69°
- SatOct 24Sunny48°72°
- SunOct 25Mostly Sunny50°70°
- MonOct 26Mostly Sunny49°69°
- TueOct 27Mostly Sunny49°69°
- WedOct 28Partly cloudy46°74°
- ThuOct 29Cloudy50°75°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Vallejo
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- WedGood (36)
- ThuGood (37)
- FriGood
Concord, CA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyNapa State Hospital, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- San Francisco 40 km
- Oakland 33 km
- Santa Rosa 58 km
- Hayward 49 km
- Concord 21 km
- Berkeley 26 km
- Fairfield 23 km
- Antioch 37 km
- Richmond 22 km
- Daly City 49 km
- Vacaville 35 km
- San Leandro 42 km
Forecasters' discussion
From the National Weather Service office in STO, issued 3 hrs ago
Key Messages
- Scattered showers, thunderstorms, and high elevation snow showers expected through late Thursday.
- Drier weather moves in Friday and into the weekend, with breezy north to east winds Friday.
- Ridge builds in over the weekend, with slight chances for showers in Shasta county.
.DISCUSSION...
...Today through Thursday...
Current radar has a swath of rain and isolated thunderstorms through the Coastal Range down toward the Sierra Foothills. The track is to the north-northwest. We have seen a few lightning strikes over the past couple of hours, but they remain few and far between storms. There are gaps of coverage in the rain as it moves through the area, but HIRES guidance continues to show the swath of rain filling in completely over the next several hours and begin to push toward the north and east as the main upper level system off the coast moves onshore. Instability has been lacking in the latest observations, with only up to 250 J/kg across the Valley, foothills, and mountains. This will likely continue for the rest of the afternoon. Cloud coverage is the key into keeping the instability lower than expected. None the less, moisture content is high and lift is present to development thunderstorms and at least maintain them through this evening. The question remains on if these storms will be able to sustain hail shafts long enough to produce nickel or even quarter size hail. As of right now, we are leaning toward small hail as a possibility and brief gusty winds in the strongest of storms. Brief heavy rain and frequent lightning will also be a hazard to watch out for.
Aviation
Showers and isolated thunderstorms will be possible through the afternoon and into the evening hours, with lowered ceilings. Ceilings should remain VFR, but chances are there for MVFR for all sites post 00z. Best timeframe for thunderstorms will be 2000z through 0400z for all sites. Winds will remain light throughout the day. Areas in and around thunderstorms may see erratic winds, brief moderate rain reducing visibilities and IFR ceilings. Otherwise, we are looking at a lull in activity later tonight around 09-10z through the mid morning hours. During this lull isolated to scattered showers at times for the sites. Near the end of the TAF period thunderstorm chances start to increase once again.
Sto Watches
None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.