Hourly Weather | Tomorrow Wednesday, September 9, 2026
Active Weather Warnings
Hayward, California
12 AM
Cloudy Night
70°
Feels Like 70°
0
Humidity: 59%
UV Index: 0
Wind: 2 mph
1 AM
Cloudy Night
70°
Feels Like 66°
0
Humidity: 62%
UV Index: 0
Wind: 2 mph
2 AM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 63%
UV Index: 0
Wind: 2 mph
3 AM
Cloudy Night
66°
Feels Like 66°
0
Humidity: 63%
UV Index: 0
Wind: 2 mph
4 AM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 65%
UV Index: 0
Wind: 2 mph
5 AM
Cloudy Night
66°
Feels Like 66°
0
Humidity: 60%
UV Index: 0
Wind: 2 mph
6 AM
Cloudy Night
66°
Feels Like 66°
0
Humidity: 57%
UV Index: 0
Wind: 2 mph
7 AM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 48%
UV Index: 0
Wind: 4 mph
8 AM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 40%
UV Index: 1
Wind: 4 mph
9 AM
Cloudy Weather
81°
Feels Like 81°
0
Humidity: 33%
UV Index: 2
Wind: 5 mph
10 AM
Cloudy Weather
86°
Feels Like 88°
0
Humidity: 27%
UV Index: 3
Wind: 5 mph
11 AM
Cloudy Weather
90°
Feels Like 91°
0
Humidity: 24%
UV Index: 4
Wind: 6 mph
12 PM
Cloudy Weather
91°
Feels Like 97°
0
Humidity: 21%
UV Index: 5
Wind: 7 mph
1 PM
Cloudy Weather
95°
Feels Like 99°
0
Humidity: 19%
UV Index: 6
Wind: 8 mph
2 PM
Cloudy Weather
99°
Feels Like 100°
0
Humidity: 18%
UV Index: 5
Wind: 9 mph
3 PM
Cloudy Weather
100°
Feels Like 100°
0
Humidity: 17%
UV Index: 4
Wind: 10 mph
4 PM
Cloudy Weather
99°
Feels Like 99°
0
Humidity: 18%
UV Index: 3
Wind: 10 mph
5 PM
Cloudy Weather
97°
Feels Like 95°
0
Humidity: 20%
UV Index: 2
Wind: 10 mph
6 PM
Cloudy Weather
93°
Feels Like 91°
0
Humidity: 22%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
90°
Feels Like 86°
0
Humidity: 27%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
86°
Feels Like 82°
0
Humidity: 31%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
82°
Feels Like 81°
0
Humidity: 35%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
81°
Feels Like 77°
0
Humidity: 39%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
79°
Feels Like 75°
0
Humidity: 42%
UV Index: 0
Wind: 6 mph

Weather Alerts and Warnings for Hayward

Moderate Expected Likely

Heat Advisory

Heat Advisory issued September 8 at 1:15PM PDT until September 10 at 10:00PM PDT by NWS San Francisco CA
Sep 8, 1:15 PM Sep 10, 10:00 PM
WHAT: Hot conditions with temperatures 10 to 20 degrees above
normal during the day, with overnight lows also running 10 to 20
degrees above normal.

WHERE: Bay Area and Central Coast.

WHEN: Until 10 PM PDT Thursday.

IMPACTS: This level of heat affects most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health systems and in
heat-sensitive industries. Hot conditions can cause heat illnesses.
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Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke. Beat the heat and check the backseat! Do not leave young children or pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Updated: Sep 8, 1:46 PM Source: NWS Alert
Minor Expected Likely

Coastal Flood Advisory

Coastal Flood Advisory issued September 8 at 9:03AM PDT until September 10 at 1:00AM PDT by NWS San Francisco CA
Sep 8, 8:00 PM Sep 10, 1:00 AM
WHAT: Up to 1.2 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal waterways.

WHERE: Bayshore locations along the San Francisco Bay, San
Pablo Bay, and Monterey Bay.

WHEN: From 8 PM this evening to 1 AM PDT Thursday.

IMPACTS: Flooding of lots, parks, and roads with only
isolated road closures expected.

ADDITIONAL DETAILS: At the San Francisco tidal gauge, high tide
is expected to be 1.2 ft above normal (6.99 ft MLLW) at 9:59 PM
Tuesday 9/8 and 1.0 ft above normal (6.79 ft MLLW) at 10:54 PM
Wednesday 9/9. These predictions include up to 0.6 ft of storm
surge that will enhance the astronomical tide and flooding
threat. High tide varies up to 90 minutes earlier or later
along the Pacific Coast and through the San Francisco Bay,
respectively.
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If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Updated: Sep 8, 1:46 PM Source: NWS Alert