Hayward
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Hayward, CA

The landscape of the famed Verdant Hills in Hayward, California
The landscape of the famed Verdant Hills in Hayward, California
The first month of the autumn, September, is also a moderately hot month in Hayward, California, with average temperature varying between 75.2°F (24°C) and 55.4°F (13°C).

Temperature

The warmest months are July through September, with an average high-temperature of 75.2°F (24°C).

Rainfall

During September, Hayward regularly aggregates up to 0.4" (9.1mm) of precipitation. During the entire year, Hayward aggregates up to 26.5" (672mm) of precipitation.

Daylight

In September, the average length of the day in Hayward is 12.4h.

Sunshine

The average sunshine in September in Hayward is 8.9h.

What are the warmest months in Hayward?

Warmest months in Hayward are July through September, with an average high-temperature of 75.2°F (24°C).

What is the temperature in September in Hayward?

In September, in Hayward, California, the average high-temperature is 75.2°F (24°C), and the average low-temperature is 55.4°F (13°C).

How much does it rain in Hayward in September?

In Hayward, California, in September, 0.4" (9.1mm) of precipitation is typically accumulated.

How many hours of daylight does Hayward have in September?

In Hayward, the average length of the day in September is 12.4h.

How long on average sun shines in September in Hayward?

The average sunshine in September in Hayward is 8.9h.
Average temperature in September - Hayward, CA
  • Average high temperature in September: 75.2°F

Warmest months (with the highest average high temperature) are July, August and September (75.2°F).
The month with the lowest average high temperature is January (57.2°F).

  • Average low temperature in September: 55.4°F

Months with the highest average low temperature are August and September (55.4°F).
The coldest month (with the lowest average low temperature) is December (41°F).

Average rainfall in September - Hayward, CA
  • Average rainfall in September: 0.4"

The wettest month (with the highest rainfall) is January (5.2").
Driest months (with the lowest rainfall) are July and August (0.1").

Average daylight in September / Average sunshine in September - Hayward, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 8.9h

The month with most sunshine is June (Average sunshine: 11h).
The month with least sunshine is December (Average sunshine: 5h).