Climate and monthly weather forecast
Arnold, CA

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Weather in January

January in Arnold, California, is a cool winter month, with an average temperature ranging between max 50.7°F (10.4°C) and min 34°F (1.1°C). Arnold's January average high-temperature settles at a fresh 50.7°F (10.4°C), showing a near match with the preceding month. Weather in January »

Weather in February

February, the last month of the winter in Arnold, is also a fresh month, with an average temperature ranging between min 33.3°F (0.7°C) and max 50°F (10°C). The ushering in of February brings an average high-temperature of a still cool 50°F (10°C), closely mirroring the 50.7°F (10.4°C) of January. Weather in February »

Weather in March

The first month of the spring, March, is also a fresh month in Arnold, California, with an average temperature fluctuating between 35.1°F (1.7°C) and 52.2°F (11.2°C). Arnold greets March with an average high-temperature of a still cool 52.2°F (11.2°C), marking a slight deviation from the preceding month. Weather in March »

Weather in April

April is a refreshing spring month in Arnold, California, with an average temperature fluctuating between 58.8°F (14.9°C) and 38.5°F (3.6°C). In Arnold, the onset of April comes with a modest high-temperature shift, transitioning from March's fresh 52.2°F (11.2°C) to a refreshing 58.8°F (14.9°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Arnold, California, with an average temperature varying between 66.6°F (19.2°C) and 44.1°F (6.7°C). As Arnold, California, transitions into May, a marginal rise in the average high-temperature is observed, moving from a mild 58.8°F (14.9°C) in April to an enjoyable 66.6°F (19.2°C). Weather in May »

Weather in June

June, the first month of the summer in Arnold, is a warm month, with temperature in the range of an average low of 52°F (11.1°C) and an average high of 78.1°F (25.6°C). Arnold's weather in June shows a rise in the average high-temperature, moving up from May's refreshing 66.6°F (19.2°C) to a moderately hot 78.1°F (25.6°C). Weather in June »

Weather in July

July, like June, in Arnold, California, is a moderately hot summer month, with an average temperature varying between 85.8°F (29.9°C) and 57.2°F (14°C). July is the month when Arnold experiences its warmest temperatures, averaging a high of 85.8°F (29.9°C) and a low of 57.2°F (14°C). Weather in July »

Weather in August

August, the last month of the summer in Arnold, is another warm month, with an average temperature fluctuating between 56.8°F (13.8°C) and 84.9°F (29.4°C). The average high-temperature during August registers at a still warm 84.9°F (29.4°C), maintaining a close resemblance to the previous month. Weather in August »

Weather in September

September, the first month of the autumn in Arnold, is also a moderately hot month, with an average temperature ranging between min 53.4°F (11.9°C) and max 79.3°F (26.3°C). During the shift to September, a minor reduction in average high-temperature is observed, shifting from a warm 84.9°F (29.4°C) in August to a still moderately hot 79.3°F (26.3°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Arnold, California, with an average temperature fluctuating between 67.5°F (19.7°C) and 46.2°F (7.9°C). Welcoming October, Arnold observes a shift in the average high-temperature, falling from September's moderately hot 79.3°F (26.3°C) to a comfortable 67.5°F (19.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a moderate month in Arnold, California, with temperature in the range of an average low of 38.3°F (3.5°C) and an average high of 56.3°F (13.5°C). Arnold's progression into November involves a drop in the average high-temperature, receding from a comfortable 67.5°F (19.7°C) in October to a mild 56.3°F (13.5°C). Weather in November »

Weather in December

December, the first month of the winter in Arnold, is also a frosty month, with an average temperature ranging between max 48°F (8.9°C) and min 32°F (0°C). December, having an average high-temperature of 48°F (8.9°C) and an average low-temperature of 32°F (0°C), is the coldest month. Weather in December »
Updated: Feb 9, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

How many days does it rain in Arnold?

In Arnold, California, during the entire year, the rain falls for 69 days and collects up to 29.09" (739mm) of precipitation.

When does it snow in Arnold?

Months with snowfall are January through May, October through December.

How much does it snow in Arnold?

In Arnold, California, during the entire year, snow falls for 31 days and aggregates up to 79.92" (2030mm) of snow.

What is the month with the lowest UV index in Arnold?

The months with the lowest UV index in Arnold are February, November and December, with an average maximum UV index of 2.

What is the most humid month in Arnold?

With an average relative humidity of 74%, March is the most humid month.

What is the rainiest month in Arnold?

The month with the most rainfall in Arnold, California, is March, when the rain falls for 11.3 days and typically aggregates up to 5.98" (152mm) of precipitation.

When does it snow the most in Arnold?

The month with the most snowfall is March, when snow falls for 7.2 days and typically aggregates up to 21.34" (542mm) of snow.

When is Daylight Saving Time (DST) in Arnold?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Arnold?

June through September are months without snowfall in Arnold, California.

When are the longest days in Arnold?

With an average of 14h and 48min of daylight, June has the longest days of the year in Arnold, California.

When is the highest UV index in Arnold?

The months with the highest UV index in Arnold, California, are June through August, with an average maximum UV index of 6.

What is the warmest month in Arnold?

July is the month when Arnold experiences its warmest temperatures, averaging a high of 85.8°F (29.9°C) and a low of 57.2°F (14°C).

What is the least humid month in Arnold?

With an average relative humidity of 36%, July is the least humid month in Arnold.

What is the driest month in Arnold?

The months with the least rainfall in Arnold are July and August Rain falls for 1.8 days and accumulates 0.08" (2mm) of rain.

What month has the most sunshine in Arnold?

July has the most sunshine of the year, with an average of 12.2h of sunshine.

What is the coldest time of year in Arnold?

December tends to be the coldest month, with temperatures averaging a daily high of 48°F (8.9°C) and a low of 32°F (0°C).

What is the month with the shortest days in Arnold?

With an average of 9h and 36min of daylight, December has the shortest days of the year in Arnold.

What is the month with the least sunshine in Arnold?

December has the least sunshine of the year in Arnold, with an average of 6h of sunshine.

Average pressure
Arnold, CA

Average pressure - Arnold, CA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Arnold, CA

Average wind speed - Arnold, CA

The windiest month (with the highest average wind speed) is February (6.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average rainfall
Arnold, CA

Average rainfall - Arnold, CA

The wettest month (with the highest rainfall) is March (5.98").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days
Arnold, CA

Average rainfall days - Arnold, CA

The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is August (1.6 days).

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Average snowfall
Arnold, CA

Average snowfall - Arnold, CA

The month with the highest snowfall is March (21.34").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Arnold, CA

Average snowfall days - Arnold, CA

The month with the highest number of snowfall days is March (7.2 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Arnold, CA

Average daylight / Average sunshine - Arnold, CA

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

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Average sunshine days
Arnold, CA

Average sunshine days - Arnold, CA

The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is March (14.5 days).

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Average UV index
Arnold, CA

Average UV index - Arnold, CA

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 2).

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Average visibility
Arnold, CA

Average visibility - Arnold, CA

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

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Arnold, California, USA

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