San Joaquin County Weather

California weather is more than clear and cloudy. It's also earthquakes, fires, air quality and power outages.

Weather Alert

Red Flag Warning
Effective: 2025-05-18 11:49:00
Expires: 2025-05-19 16:00:00
* Winds...North winds 15 to 25 mph with gusts up to 35 mph expected. Strongest winds are expected across the central Sacramento Valley, along and west of Interstate 5. * Humidity...15 to 25 percent. * Highest Threat...Central and Southern Sacramento Valley along and west of the I-5 corridor and the Northern San Joaquin Valley. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended.
WHERE... Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft; Central Sacramento Valley including Glenn/Colusa/Yuba/Northern Sutter/Butte County Below 1000 Ft; Southern Sacramento Valley In Yolo/Sacramento/Far Western Placer/Southern Sutter and Solano County Below 1000 Ft - Excludes the Delta; Eastern Delta; Northern San Joaquin Valley in San Joaquin and Stanislaus Counties Below 1000 ft - Excludes the Delta

San Joaquin Current Conditions Map

Map icons courtesey of the fine folks at the Map Icons Collection.

NOAA Satellite Images

GEOColor Weather Satellite Image for San Joaquin

PAC-US-2 Weather Satellite Image for San Joaquin

West Band 09 Weather Satellite Image for San Joaquin

West Band 13 Weather Satellite Image for San Joaquin

Active CalFire Incidents

County

Incident Name

Location

Acres Burned
% Contained

Updated

Contra Costa

Walnut Fire

Walnut Boulevard near Camino Diablo, Brentwood

51 / 0

05/18/2025

Fresno

Corn Fire

Cornflower Lane east of Squaw Valley Road in Yokuts Valley

30 / 20

05/18/2025

Fresno

Panoche Fire

West Ponoche Road near I-5, Chaney Ranch

27 / 0

05/18/2025

Imperial

Paradise Fire

Unknown / TBD

26 / 0

05/06/2025

Kern

Democrat Fire

Highway 178 near of Upper Richbar Picnic Area, Sequoia National Forest

450 / 0

05/18/2025

Madera

Acres Fire

Road 602 and Madera Canal, Madera

632 / 100

05/15/2025

Merced

Main Fire

G street cross of the Main Canal, 8 Miles North of the City of Merced.

23 / 100

05/17/2025

Placer

Sunset Fire

Sunset Blvd. West cross of Fiddyment Road, Lincoln

65 / 100

05/18/2025

Riverside

Gold Fire

44000 block of Gold Creek Lane, Aguanga

10 / 0

05/16/2025

San Benito

Idria Fire

New Idria Road South of Panoche Valley Paicines

330 / 90

05/18/2025

San Diego

Border 79 Fire

Near Hwy 94 & Barrett Smith Rd, Barrett Junction

38 / 100

12/11/2024

San Joaquin

Acampo Fire

Johnson / Brandt Road, Clements

22 / 100

05/16/2025

Shasta

Creek Fire

Battle Creek Road, Shingletown

14 / 100

05/16/2025

Stanislaus

Creek Fire

I-5/Ingram Creek Road, Westley

66 / 100

05/16/2025

Tehama

Gunsmoke Fire

Pettyjohn Road, Red Bluff

11 / 20

05/18/2025

Earthquakes in California in the Last 72 Hours

Use our guide to get ready for the big one.

Time

Description

USGS Page

05/18/2025 8:04 p.m.

M 2.7 - 69 km WNW of Petrolia, Humboldt County, CA

More Info

05/18/2025 3:58 p.m.

M 2.6 - 14 km W of Toms Place, CA

More Info

05/17/2025 7:23 p.m.

M 2.5 - 6 km NNW of The Geysers, CA

More Info

05/17/2025 5:45 a.m.

M 3.0 - 2 km NNW of The Geysers, CA

More Info

05/16/2025 10:58 p.m.

M 3.6 - 37 km W of Petrolia, Humboldt County, CA

More Info

05/16/2025 10:23 p.m.

M 2.9 - 19 km W of Petrolia, Humboldt County, CA

More Info

05/16/2025 10:08 p.m.

M 3.0 - 25 km W of Petrolia, Humboldt County, CA

More Info

05/16/2025 9:46 p.m.

M 2.5 - 35 km W of Petrolia, Humboldt County, CA

More Info

05/16/2025 9:38 p.m.

M 2.5 - 33 km W of Petrolia, Humboldt County, CA

More Info

05/16/2025 8:41 p.m.

M 3.0 - 32 km W of Petrolia, Humboldt County, CA

More Info

5 Day Forecast for the San Joaquin Region

Monday, May 19 2025 1

4 AM

57° Wind NW 7.8 mph clear sky

7 AM

61° Wind NW 11.0 mph clear sky

10 AM

75° Wind NW 13.2 mph clear sky

1 PM

81° Wind NW 13.9 mph clear sky

4 PM

74° Wind W 13.7 mph clear sky

7 PM

77° Wind W 11.6 mph clear sky

10 PM

62° Wind W 7.2 mph clear sky

Tuesday, May 20 2025 8

1 AM

57° Wind W 5.4 mph clear sky

4 AM

55° Wind NW 5.0 mph clear sky

7 AM

62° Wind NW 7.2 mph clear sky

10 AM

77° Wind NW 10 mph clear sky

1 PM

87° Wind NW 9.0 mph clear sky

4 PM

88° Wind W 11.1 mph clear sky

7 PM

76° Wind W 10.0 mph clear sky

10 PM

63° Wind W 6.2 mph clear sky

Wednesday, May 21 2025 16

1 AM

59° Wind NW 4.4 mph clear sky

4 AM

56° Wind NW 6.2 mph clear sky

7 AM

63° Wind NW 7.4 mph clear sky

10 AM

81° Wind NW 6.5 mph clear sky

1 PM

92° Wind NW 8.1 mph clear sky

4 PM

93° Wind W 13.0 mph few clouds

7 PM

80° Wind W 7.8 mph scattered clouds

10 PM

67° Wind W 4.4 mph scattered clouds

Thursday, May 22 2025 24

1 AM

63° Wind W 3.6 mph few clouds

4 AM

59° Wind NW 3.1 mph few clouds

7 AM

66° Wind NW 5.1 mph few clouds

10 AM

82° Wind NW 8.1 mph few clouds

1 PM

89° Wind W 15.4 mph clear sky

4 PM

82° Wind W 16.8 mph clear sky

7 PM

67° Wind SW 14.1 mph clear sky

10 PM

58° Wind W 10.6 mph clear sky

Friday, May 23 2025 32

1 AM

54° Wind SW 10.0 mph clear sky

4 AM

52° Wind W 8.1 mph clear sky

7 AM

57° Wind W 7.7 mph clear sky

10 AM

70° Wind W 7.4 mph clear sky

1 PM

79° Wind W 11.2 mph clear sky

4 PM

76° Wind W 15.3 mph clear sky

7 PM

61° Wind W 12.3 mph clear sky

10 PM

54° Wind W 6.2 mph clear sky

Saturday, May 24 2025 40

1 AM

52° Wind NW 4.1 mph clear sky

Resources

• AlertCalifornia Camera Map

• Cal ISO Grid Tracker

• CalFire Incidents

• NASA Heat Satellites

• National Weather Service Alerts

• NOAA All Satellite Images

• PG&E Outages

• USGS Earthquake Map

• Watch Duty

River & Stream Levels

• San Joaquin River at Vernalis Ca (USGS)

• Turner Cut at Holt Ca (USGS)

• Victoria Canal at Byron Ca (USGS)

• Middle River at Middle River Ca (USGS)

• Middle River at Holt Ca (USGS)

• Old River at Delta Mendota Canal Ca (USGS)

• Grant Line Cn at Tracy Ca (USGS)

• Old River at Bacon Island Ca (USGS)

• San Joaquin River at Prisoners Pt Nr Terminous Ca (USGS)

• S Mokelumne River at New Hope Br Nr Walnut Grove Ca (USGS)

• Woodward Canal A Old River at Brentwood Ca (USGS)

• Railroad Cut A Old River at Brentwood Ca (USGS)