38.1800’ N, 122.0450’ W

Joice Island, Suisun Slough, CA

60°
H 81°
L 54°
SW
12mph
Low tide
10:12 am

Joice Island, Suisun Slough, CA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Sat
Sep 12
Sunny
Close Hourly
81º / 54º 2% WSW 20 mph 56%
5am Clear 60º 2% SW 12 mph 78%
6am Mostly Clear 60º 2% SW 12 mph 79%
7am Partly Cloudy 60º 2% SW 12 mph 80%
8am Mostly Sunny 63º 1% SW 13 mph 76%
9am Mostly Sunny 66º 1% WSW 15 mph 68%
10am Sunny 69º 0% WSW 16 mph 59%
11am Sunny 72º 0% SW 16 mph 51%
12pm Sunny 75º 0% SW 16 mph 44%
1pm Sunny 77º 0% SW 17 mph 40%
2pm Sunny 79º 0% WSW 18 mph 37%
3pm Sunny 79º 0% SW 19 mph 34%
4pm Sunny/Wind 78º 0% WSW 20 mph 36%
5pm Sunny 76º 0% WSW 19 mph 39%
6pm Sunny 73º 0% WSW 19 mph 45%
7pm Sunny 69º 0% WSW 18 mph 53%
8pm Clear 66º 1% WSW 16 mph 60%
9pm Clear 64º 2% WSW 15 mph 63%
10pm Clear 63º 3% WSW 15 mph 65%
11pm Clear 62º 3% WSW 14 mph 68%
Sun
Sep 13
Sunny
View Hourly
82º / 56º 5% WSW 14 mph 45%
12am Clear 61º 4% WSW 14 mph 69%
1am Clear 60º 4% WSW 13 mph 71%
2am Clear 60º 4% WSW 13 mph 71%
3am Clear 59º 4% WSW 12 mph 72%
4am Clear 58º 4% WSW 11 mph 72%
5am Clear 57º 5% WSW 10 mph 75%
6am Clear 56º 5% WSW 9 mph 79%
7am Sunny 55º 5% WSW 9 mph 81%
8am Sunny 60º 3% WSW 8 mph 72%
9am Sunny 64º 1% W 8 mph 61%
10am Sunny 68º 0% W 9 mph 50%
11am Sunny 72º 0% W 8 mph 42%
12pm Sunny 75º 0% WSW 7 mph 36%
1pm Sunny 78º 0% WSW 8 mph 32%
2pm Sunny 80º 0% WSW 10 mph 30%
3pm Sunny 80º 0% WSW 11 mph 30%
4pm Sunny 81º 0% WSW 13 mph 31%
5pm Sunny 79º 0% WSW 13 mph 34%
6pm Sunny 77º 0% WSW 13 mph 38%
7pm Sunny 73º 0% WSW 11 mph 44%
8pm Clear 69º 1% WSW 9 mph 53%
9pm Clear 67º 1% WSW 9 mph 58%
10pm Clear 65º 2% WSW 8 mph 62%
11pm Clear 63º 3% SW 8 mph 67%
Mon
Sep 14
Sunny
View Hourly
87º / 55º 4% WSW 14 mph 39%
12am Clear 61º 3% SW 8 mph 70%
1am Clear 60º 4% WSW 7 mph 74%
2am Clear 59º 4% WSW 6 mph 72%
3am Clear 59º 4% WSW 6 mph 72%
4am Clear 58º 4% WSW 7 mph 72%
Tue
Sep 15
Partly Cloudy 83º / 55º 7% SW 13 mph 54%
Wed
Sep 16
Partly Cloudy 78º / 55º 19% SW 14 mph 59%
Thu
Sep 17
Partly Cloudy 78º / 56º 19% WSW 13 mph 58%
Fri
Sep 18
Partly Cloudy 83º / 56º 18% WSW 14 mph 54%
Sat
Sep 19
Mostly Sunny 82º / 57º 18% SW 14 mph 54%

Weather Radar for Joice Island, Suisun Slough, CA See Radar

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Joice Island, Suisun Slough, CA

Today
High : 79ºF
WSW wind 13 to 17 kt, with gusts as high as 26 kt. Sunny.
Tonight
Low : 58ºF
W wind 11 to 16 kt, with gusts as high as 26 kt. Clear.
Sunday
High : 80ºF
W wind 7 to 10 kt, with gusts as high as 20 kt. Sunny.
Sunday Night
Low : 58ºF
WSW wind 5 to 9 kt. Clear.
Monday
High : 85ºF
WSW wind 6 to 9 kt. Sunny.
Monday Night
Low : 59ºF
SW wind 8 to 11 kt. Mostly clear.
Tuesday
High : 81ºF
WSW wind 7 to 9 kt. Sunny.
Tuesday Night
Low : 58ºF
WSW wind 8 to 10 kt. Mostly clear.
Wednesday
High : 79ºF
WSW wind around 9 kt. Sunny.

NOAA Buoy Data Near Joice Island, Suisun Slough, CA See Map

Loading Map...
Loading Buoy Data...

    Wind Speed Forecast for Joice Island, Suisun Slough, CA

    SaturdaySundayMonday
    Wind Speed (MPH) 12151719151310881397
    12pm4pm8pm12am4am8am12pm4pm8pm12am4am8am
    MPH 12151719151310881397
    DIR SWWSWSWWSWWSWWSWWSWWWSWWSWWSWWSW

    Current Weather Conditions In Joice Island, Suisun Slough, CA

    As Of: 45 minutes ago

    • 60ºF
    • 59ºF
    • 12mph
    • 0º (SW)
    • 21mph
    • Clear
    • 10mi
    • 29.84"
    • 78%
    • 0ºF

    The weather right now in Joice Island, Suisun Slough, CA is Clear. The current temperature is 60°F, and the expected high and low for today, Saturday, September 12, 2026, are 81° high temperature and 54°F low temperature. The wind is currently blowing at 12 miles per hour, and coming from the Southwest. The wind is gusting to 21 mph. With the wind and the atmosphere the temperature feels like 59° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 78 percent, and air pressure at 29.84 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 2:00am Sat Sep 12 2026

    ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 9 AM PDT SUNDAY...

    WHAT: West winds 15 to 25 kt with gusts up to 30 kt and rough
    waters expected.

    WHERE: San Pablo Bay, Suisun Bay, the West Delta and the San
    Francisco Bay north of the Bay Bridge.

    WHEN: From 9 AM this morning to 9 AM PDT Sunday.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced mariners, especially those operating smaller
    vessels, should avoid navigating in hazardous conditions.

    &&