Monthly weather forecast and climate
Rowland Heights, CA

Weather in January

January, the same as December, is another enjoyable winter month in Rowland Heights, California, with average temperature varying between 50.2°F (10.1°C) and 66.9°F (19.4°C). In Rowland Heights, the average high-temperature in January is practically the same as in December - a still enjoyable 66.9°F (19.4°C). Weather in January »

Weather in February

The last month of the winter, February, is also an enjoyable month in Rowland Heights, California, with average temperature fluctuating between 48.9°F (9.4°C) and 66.7°F (19.3°C). In February, the average high-temperature is essentially the same as in January - a still enjoyable 66.7°F (19.3°C). Weather in February »

Weather in March

March, the first month of the spring, in Rowland Heights, is an agreeable month, with temperature in the range of an average low of 50.7°F (10.4°C) and an average high of 70.2°F (21.2°C). In Rowland Heights, the average high-temperature is almost the same as in February - an agreeable 70.2°F (21.2°C). Weather in March »

Weather in April

April in Rowland Heights, California, is a warm spring month, with average temperature varying between 53.2°F (11.8°C) and 73.6°F (23.1°C). In April, the average high-temperature is relatively the same as in March - a warm 73.6°F (23.1°C). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Rowland Heights, California, with average temperature ranging between min 55.9°F (13.3°C) and max 75.7°F (24.3°C). In Rowland Heights, the average high-temperature in May is practically the same as in April - a still moderately hot 75.7°F (24.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Rowland Heights, is also a moderately hot month, with average temperature varying between 59.2°F (15.1°C) and 80.8°F (27.1°C). In June, the average high-temperature is relatively the same as in May - a still warm 80.8°F (27.1°C). Weather in June »

Weather in July

July is a tropical summer month in Rowland Heights, California, with average temperature fluctuating between 64.6°F (18.1°C) and 86.5°F (30.3°C). In Rowland Heights, the average high-temperature marginally rises, from a warm 80.8°F (27.1°C) in June, to a hot 86.5°F (30.3°C). Weather in July »

Weather in August

August, the last month of the summer, in Rowland Heights, is also a hot month, with average temperature fluctuating between 88.3°F (31.3°C) and 66.2°F (19°C). With an average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 66.2°F (19°C), August is the warmest month. The average heat index is evaluated at a hot 91.9°F (33.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a tropical month in Rowland Heights, California, with average temperature varying between 64.8°F (18.2°C) and 86°F (30°C). In Rowland Heights, California, the average high-temperature is practically the same as in August - a still hot 86°F (30°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Rowland Heights, California, with average temperature varying between 60.6°F (15.9°C) and 79.7°F (26.5°C). In Rowland Heights, the average high-temperature slightly decreases, from a hot 86°F (30°C) in September, to a warm 79.7°F (26.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in Rowland Heights, California, with average temperature varying between 72.7°F (22.6°C) and 54.9°F (12.7°C). In November, the average high-temperature marginally drops, from a moderately hot 79.7°F (26.5°C) in October, to a pleasant 72.7°F (22.6°C). Weather in November »

Weather in December

December, the first month of the winter, in Rowland Heights, is also an enjoyable month, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 49.5°F (9.7°C). The coldest month is December, with an average high-temperature of 64.9°F (18.3°C) and an average low-temperature of 49.5°F (9.7°C). Weather in December »
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FAQ

How many days does it rain in Rowland Heights?

Throughout the year, in Rowland Heights, there are 43.8 rainfall days, and 7.01" (178mm) of precipitation is accumulated.

What are the months with the lowest UV index in Rowland Heights?

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Rowland Heights.

What is the month with the least sunshine in Rowland Heights?

February and December, with an average of 6.8h of sunshine, are months with the least sunshine in Rowland Heights.

What is the most humid month in Rowland Heights?

With an average relative humidity of 59%, June is the most humid month in Rowland Heights, California.

What is the driest month in Rowland Heights?

Months with the least rainfall are June and August Rain falls for 1.1 days and accumulates 0.04" (1mm) of rain.

When are the longest days in Rowland Heights?

June has the longest days of the year, with an average of 14.4h of daylight.

What month has the most sunshine in Rowland Heights?

With an average of 12.1h of sunshine, July has the most sunshine of the year in Rowland Heights.

What is the warmest month in Rowland Heights?

The warmest month in Rowland Heights is August, with an average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 66.2°F (19°C).

What is the month with the highest UV index in Rowland Heights?

The month with the highest UV index is August, with an average maximum UV index of 7.

What is the least humid month in Rowland Heights?

November is the least humid month in Rowland Heights, California, with an average relative humidity of 46%.

What is the coldest month in Rowland Heights?

With an average high-temperature of 64.9°F (18.3°C) and an average low-temperature of 49.5°F (9.7°C), December is the coldest month in Rowland Heights, California.

What is the rainiest month in Rowland Heights?

The month with the most rainfall in Rowland Heights, California, is December when the rain falls for 6 days and typically aggregates up to 1.61" (41mm) of precipitation.

What is the month with the shortest days in Rowland Heights?

December has the shortest days of the year in Rowland Heights, California, with an average of 9.9h of daylight.

Average temperature
Rowland Heights, CA

Average temperature - Rowland Heights, CA

The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is December (64.9°F).

The month with the highest average low temperature is August (66.2°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).

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Average pressure
Rowland Heights, CA

Average pressure - Rowland Heights, CA

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed
Rowland Heights, CA

Average wind speed - Rowland Heights, CA

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).

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Average humidity
Rowland Heights, CA

Average humidity - Rowland Heights, CA

The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (46%).

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Average rainfall
Rowland Heights, CA

Average rainfall - Rowland Heights, CA

The wettest month (with the highest rainfall) is December (1.61").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days
Rowland Heights, CA

Average rainfall days - Rowland Heights, CA

The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1.1 days).

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Average daylight / Average sunshine
Rowland Heights, CA

Average daylight / Average sunshine - Rowland Heights, CA

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are February and December (Average sunshine: 6.8).

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Average sunshine days
Rowland Heights, CA

Average sunshine days - Rowland Heights, CA

The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index
Rowland Heights, CA

Average UV index - Rowland Heights, CA

The month with the highest UV index is August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average visibility
Rowland Heights, CA

Average visibility - Rowland Heights, 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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