Monthly 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

Weather in January

January, like December, is a moderate winter month in Hayward, California, with average temperature fluctuating between 57°F (13.9°C) and 43.7°F (6.5°C). In Hayward, the average high-temperature is essentially the same as in December - a still mild 57°F (13.9°C). Weather in January »

Weather in February

The last month of the winter, February, is also a moderate month in Hayward, California, with temperature in the range of an average low of 44.1°F (6.7°C) and an average high of 59.5°F (15.3°C). In Hayward, the average high-temperature is practically the same as in January - a still moderate 59.5°F (15.3°C). Weather in February »

Weather in March

March, the first month of the spring, in Hayward, is an enjoyable month, with average temperature varying between 45°F (7.2°C) and 61.9°F (16.6°C). In March, the average high-temperature is almost the same as in February - a comfortable 61.9°F (16.6°C). Weather in March »

Weather in April

April, like March, in Hayward, California, is another enjoyable spring month, with temperature in the range of an average low of 46.4°F (8°C) and an average high of 66.2°F (19°C). In Hayward, the average high-temperature is practically the same as in March - a still enjoyable 66.2°F (19°C). Weather in April »

Weather in May

May, the last month of the spring, in Hayward, is an agreeable month, with temperature in the range of an average high of 70.3°F (21.3°C) and an average low of 49.1°F (9.5°C). In Hayward, the average high-temperature is relatively the same as in April - a pleasant 70.3°F (21.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Hayward, is a warm month, with average temperature fluctuating between 53.6°F (12°C) and 77°F (25°C). In June, the average high-temperature slightly increases, from an agreeable 70.3°F (21.3°C) in May, to a moderately hot 77°F (25°C). Weather in June »

Weather in July

July, like June, in Hayward, California, is a moderately hot summer month, with average temperature varying between 55.2°F (12.9°C) and 80.2°F (26.8°C). With an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 55.2°F (12.9°C), July is the warmest month. Weather in July »

Weather in August

August, the last month of the summer, in Hayward, is also a moderately hot month, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 79.7°F (26.5°C). In August, the average high-temperature is almost the same as in July - a still warm 79.7°F (26.5°C). Weather in August »

Weather in September

September, the first month of the autumn, in Hayward, is also a moderately hot month, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 56.3°F (13.5°C). In Hayward, the average high-temperature in September is relatively the same as in August - a still moderately hot 79°F (26.1°C). Weather in September »

Weather in October

October, like September, is another pleasant autumn month in Hayward, California, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 54.3°F (12.4°C). In Hayward, the average high-temperature in October marginally drops, from a warm 79°F (26.1°C) in September, to an agreeable 72.5°F (22.5°C). Weather in October »

Weather in November

November, the last month of the autumn, in Hayward, is also an enjoyable month, with average temperature ranging between min 48.2°F (9°C) and max 63.5°F (17.5°C). In November, the average high-temperature decreases, from a pleasant 72.5°F (22.5°C) in October, to a comfortable 63.5°F (17.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Hayward, is still a mild month, with temperature in the range of an average low of 43.7°F (6.5°C) and an average high of 55.9°F (13.3°C). With an average high-temperature of 55.9°F (13.3°C) and an average low-temperature of 43.7°F (6.5°C), December is the coldest month. Weather in December »
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FAQ

How much does it rain in Hayward?

Throughout the year, there are 69.2 rainfall days, and 11.1" (282mm) of precipitation is accumulated.

What are the months with the lowest UV index in Hayward?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Hayward, California.

What is the wettest month in Hayward?

The month with the most rainfall is February when the rain falls for 8.3 days and typically aggregates up to 2.28" (58mm) of precipitation.

What is the most humid month in Hayward?

March is the most humid month in Hayward, California, with an average relative humidity of 74%.

When are the longest days in Hayward?

June has the longest days of the year in Hayward, with an average of 14.7h of daylight.

When is the highest UV index in Hayward?

With an average maximum UV index of 6, June is the month with the highest UV index in Hayward.

What is the warmest month in Hayward?

July is the warmest month in Hayward, with an average high-temperature of 80.2°F (26.8°C) and an average low-temperature of 55.2°F (12.9°C).

What is the driest month in Hayward?

Months with the least rainfall in Hayward are July and August Rain falls for 1.5 days and accumulates 0.04" (1mm) of rain.

What month has the most sunshine in Hayward?

July has the most sunshine of the year, with an average of 12.1h of sunshine.

What is the least humid month in Hayward?

September is the least humid month, with an average relative humidity of 61%.

What is the coldest month in Hayward?

With an average high-temperature of 55.9°F (13.3°C) and an average low-temperature of 43.7°F (6.5°C), December is the coldest month in Hayward.

What is the month with the shortest days in Hayward?

The month with the shortest days in Hayward, California, is December, with an average of 9.6h of daylight.

What is the month with the least sunshine in Hayward?

December has the least sunshine of the year, with an average of 5.9h of sunshine.

Average temperature
Hayward, CA

Average temperature - Hayward, CA

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (55.9°F).

The month with the highest average low temperature is August (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (43.7°F).

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Average pressure
Hayward, CA

Average pressure - Hayward, CA

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed
Hayward, CA

Average wind speed - Hayward, CA

The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).

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Average rainfall
Hayward, CA

Average rainfall - Hayward, CA

The wettest month (with the highest rainfall) is February (2.28").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Hayward, CA

Average rainfall days - Hayward, CA

The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (0.9 days).

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Average daylight / Average sunshine
Hayward, CA

Average daylight / Average sunshine - Hayward, CA

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

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days
Hayward, CA

Average sunshine days - Hayward, CA

The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is March (17.3 days).

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Average visibility
Hayward, CA

Average visibility - Hayward, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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