Monthly weather forecast and climate
Riverdale Park, CA

Weather in January

January, like December, is another mild winter month in Riverdale Park, California, with average temperature varying between 57.7°F (14.3°C) and 41.9°F (5.5°C). In Riverdale Park, the average high-temperature is practically the same as in December - a still mild 57.7°F (14.3°C). Weather in January »

Weather in February

February, the last month of the winter, in Riverdale Park, is a comfortable month, with average temperature ranging between max 61.2°F (16.2°C) and min 42.3°F (5.7°C). In February, the average high-temperature is practically the same as in January - an enjoyable 61.2°F (16.2°C). Weather in February »

Weather in March

The first month of the spring, March, is still a comfortable month in Riverdale Park, California, with average temperature fluctuating between 44.2°F (6.8°C) and 65.7°F (18.7°C). In Riverdale Park, the average high-temperature is relatively the same as in February - a still enjoyable 65.7°F (18.7°C). Weather in March »

Weather in April

April is an agreeable spring month in Riverdale Park, California, with average temperature fluctuating between 72.1°F (22.3°C) and 47.7°F (8.7°C). In April, the average high-temperature marginally rises, from a comfortable 65.7°F (18.7°C) in March, to an agreeable 72.1°F (22.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderately hot month in Riverdale Park, California, with average temperature varying between 52.7°F (11.5°C) and 80.1°F (26.7°C). In Riverdale Park, California, the average high-temperature in May marginally rises, from an agreeable 72.1°F (22.3°C) in April, to a moderately hot 80.1°F (26.7°C). Weather in May »

Weather in June

June, the first month of the summer, in Riverdale Park, is a tropical month, with average temperature ranging between max 91°F (32.8°C) and min 59.2°F (15.1°C). In Riverdale Park, the average high-temperature increases, from a warm 80.1°F (26.7°C) in May, to a hot 91°F (32.8°C). Weather in June »

Weather in July

July in Riverdale Park, California, is a very hot summer month, with average temperature varying between 62.1°F (16.7°C) and 97.7°F (36.5°C). July is the warmest month, with an average high-temperature of 97.7°F (36.5°C) and an average low-temperature of 62.1°F (16.7°C). Weather in July »

Weather in August

The last month of the summer, August, is another very hot month in Riverdale Park, California, with average temperature ranging between min 61.7°F (16.5°C) and max 96.4°F (35.8°C). In Riverdale Park, the average high-temperature in August is essentially the same as in July - a still very hot 96.4°F (35.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a tropical month in Riverdale Park, California, with average temperature fluctuating between 59.9°F (15.5°C) and 90.9°F (32.7°C). In Riverdale Park, the average high-temperature in September slightly decreases, from a torrid 96.4°F (35.8°C) in August, to a tropical 90.9°F (32.7°C). Weather in September »

Weather in October

October, like September, in Riverdale Park, California, is another warm autumn month, with average temperature ranging between min 54.5°F (12.5°C) and max 77.9°F (25.5°C). In Riverdale Park, the average high-temperature in October drops, from a hot 90.9°F (32.7°C) in September, to a warm 77.9°F (25.5°C). Weather in October »

Weather in November

November, the last month of the autumn, in Riverdale Park, is also an enjoyable month, with average temperature ranging between max 65.3°F (18.5°C) and min 46.9°F (8.3°C). In Riverdale Park, California, the average high-temperature drops, from a warm 77.9°F (25.5°C) in October, to an enjoyable 65.3°F (18.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a mild month in Riverdale Park, California, with average temperature varying between 41.9°F (5.5°C) and 55.6°F (13.1°C). December is the coldest month, with an average high-temperature of 55.6°F (13.1°C) and an average low-temperature of 41.9°F (5.5°C). Weather in December »
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FAQ

What is the most humid month in Riverdale Park?

The most humid month is January, with an average relative humidity of 72%.

How much does it rain in Riverdale Park?

Throughout the year, there are 54.3 rainfall days, and 6.54" (166mm) of precipitation is accumulated.

When is the lowest UV index in Riverdale Park?

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

What is the rainiest month in Riverdale Park?

March is the month with the most rainfall. Rain falls for 10.3 days and accumulates 1.3" (33mm) of precipitation.

When are the longest days in Riverdale Park?

With an average of 14.7h of daylight, June has the longest days of the year in Riverdale Park.

What are the months with the highest UV index in Riverdale Park?

June through August, with an average maximum UV index of 7, are months with the highest UV index.

What is the warmest month in Riverdale Park?

July is the warmest month, with an average high-temperature of 97.7°F (36.5°C) and an average low-temperature of 62.1°F (16.7°C).

What is the least humid month in Riverdale Park?

The least humid month is July, with an average relative humidity of 37%.

What is the driest month in Riverdale Park?

Months with the least rainfall in Riverdale Park, California, are July and August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.

What month has the most sunshine in Riverdale Park?

The month with the most sunshine is July, with an average of 12.1h of sunshine.

What is the coldest month in Riverdale Park?

December is the coldest month, with an average high-temperature of 55.6°F (13.1°C) and an average low-temperature of 41.9°F (5.5°C).

What is the month with the shortest days in Riverdale Park?

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

What is the month with the least sunshine in Riverdale Park?

With an average of 6h of sunshine, December has the least sunshine of the year.

Average temperature
Riverdale Park, CA

Average temperature - Riverdale Park, CA

The warmest month (with the highest average high temperature) is July (97.7°F).
The month with the lowest average high temperature is December (55.6°F).

The month with the highest average low temperature is July (62.1°F).
The coldest months (with the lowest average low temperature) are January and December (41.9°F).

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Average pressure
Riverdale Park, CA

Average pressure - Riverdale Park, CA

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed
Riverdale Park, CA

Average wind speed - Riverdale Park, CA

The windiest month (with the highest average wind speed) is June (7.3mph).
The calmest month (with the lowest average wind speed) is November (5.2mph).

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Average humidity
Riverdale Park, CA

Average humidity - Riverdale Park, CA

The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (37%).

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Average rainfall
Riverdale Park, CA

Average rainfall - Riverdale Park, CA

The wettest month (with the highest rainfall) is March (1.3").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Riverdale Park, CA

Average rainfall days - Riverdale Park, CA

The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).

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Average daylight / Average sunshine
Riverdale Park, CA

Average daylight / Average sunshine - Riverdale Park, 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: 6h).

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Average sunshine days
Riverdale Park, CA

Average sunshine days - Riverdale Park, CA

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (19.6 days).

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Average UV index
Riverdale Park, CA

Average UV index - Riverdale Park, CA

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average visibility
Riverdale Park, CA

Average visibility - Riverdale Park, 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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