Weather in Hayward: September
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Average day temperature: | 69.1°F |
| Average night temperature: | 54.6°F | |
 |
Number of sunny days: | 13 days |
| Day length: | 11.7 - 13.3 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 0.7 in. | |
| more information | ||
14 days
forecast
forecast
| Hayward |
weather in
October
October
| Hayward |
Air temperature in September, °F
Show year:
2025
2024
2023
The highest day temperature during September of 2025 was 82°F. At the same time the lowest night temperature was 38°F. Daily and nightly averages during September were 67.5°F and 54.6°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Hayward in September is 0.7 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 6.8 mph It makes September one of the least windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 7.6.
Best time for vacation in Hayward
Hayward on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Hayward
Local time: 04:18
September 19, saturday
0600
50°F
W
8 mph
8 mph
0900
52°F
W
8 mph
8 mph
1200
52°F
W
6 mph
6 mph
1500
52°F
SW
7 mph
7 mph
1800
52°F
SW
6 mph
6 mph
2100
52°F
SW
6 mph
6 mph
September 20, sunday
0000
52°F
SW
6 mph
6 mph
0300
50°F
SW
6 mph
6 mph
