Monthly weather forecast and climate
Charter Oak, CA

Weather in January

January, the same as December, is another comfortable winter month in Charter Oak, California, with average temperature varying between 46.9°F (8.3°C) and 64.9°F (18.3°C). In Charter Oak, the average high-temperature in January is essentially the same as in December - a still enjoyable 64.9°F (18.3°C). Weather in January »

Weather in February

February, the last month of the winter, in Charter Oak, is another comfortable month, with average temperature varying between 64.4°F (18°C) and 45.7°F (7.6°C). In Charter Oak, the average high-temperature in February is almost the same as in January - a still enjoyable 64.4°F (18°C). Weather in February »

Weather in March

March, the first month of the spring, in Charter Oak, is an agreeable month, with average temperature varying between 68.2°F (20.1°C) and 47.5°F (8.6°C). In March, the average high-temperature is essentially the same as in February - a pleasant 68.2°F (20.1°C). Weather in March »

Weather in April

April, like March, is another pleasant spring month in Charter Oak, California, with average temperature varying between 50.2°F (10.1°C) and 72.3°F (22.4°C). In Charter Oak, the average high-temperature is essentially the same as in March - a still pleasant 72.3°F (22.4°C). Weather in April »

Weather in May

May, the last month of the spring, in Charter Oak, is a warm month, with average temperature fluctuating between 75.7°F (24.3°C) and 54°F (12.2°C). In May, the average high-temperature is relatively the same as in April - a warm 75.7°F (24.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Charter Oak, is also a moderately hot month, with average temperature fluctuating between 82.9°F (28.3°C) and 57.7°F (14.3°C). In Charter Oak, the average high-temperature in June marginally rises, from 75.7°F (24.3°C) in May, to a still warm 82.9°F (28.3°C). Weather in June »

Weather in July

July in Charter Oak, California, is a tropical summer month, with average temperature fluctuating between 88.2°F (31.2°C) and 63.3°F (17.4°C). In July, the average high-temperature is almost the same as in June - a hot 88.2°F (31.2°C). Weather in July »

Weather in August

August, the last month of the summer, in Charter Oak, is also a hot month, with average temperature ranging between min 64.9°F (18.3°C) and max 89.4°F (31.9°C). With an average high-temperature of 89.4°F (31.9°C) and an average low-temperature of 64.9°F (18.3°C), August is the warmest month. In August, the average heat index is estimated at a tropical 91.6°F (33.1°C). Weather in August »

Weather in September

September, the first month of the autumn, in Charter Oak, is still a hot month, with average temperature ranging between min 63.3°F (17.4°C) and max 86.7°F (30.4°C). In Charter Oak, the average high-temperature is relatively the same as in August - a still tropical 86.7°F (30.4°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Charter Oak, California, with average temperature fluctuating between 58.1°F (14.5°C) and 78.3°F (25.7°C). In October, the average high-temperature slightly decreases, from a tropical 86.7°F (30.4°C) in September, to a moderately hot 78.3°F (25.7°C). Weather in October »

Weather in November

November, the last month of the autumn, in Charter Oak, is also an agreeable month, with average temperature varying between 51.8°F (11°C) and 70.7°F (21.5°C). In Charter Oak, California, the average high-temperature marginally drops, from a moderately hot 78.3°F (25.7°C) in October, to a pleasant 70.7°F (21.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Charter Oak, is also an enjoyable month, with average temperature ranging between min 45.5°F (7.5°C) and max 62.4°F (16.9°C). With an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 45.5°F (7.5°C), December is the coldest month. Weather in December »
[Resources]

FAQ

How many days does it rain in Charter Oak?

In Charter Oak, California, during the entire year, the rain falls for 45.2 days and collects up to 6.5" (165mm) of precipitation.

What is the month with the least sunshine in Charter Oak?

Months with the least sunshine are January, February and December, with an average of 7h of sunshine.

What is the rainiest month in Charter Oak?

The month with the most rainfall is February when the rain falls for 5 days and typically aggregates up to 1.46" (37mm) of precipitation.

What are the most humid months in Charter Oak?

Months with the highest humidity are March and May, with an average relative humidity of 55%.

What is the driest month in Charter Oak?

June is the month with the least rainfall in Charter Oak, California. Rain falls for 1.2 days and accumulates 0.04" (1mm) of precipitation.

When are the longest days in Charter Oak?

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

What is the month with the most sunshine in Charter Oak?

June and July, with an average of 12.1h of sunshine, are months with the most sunshine in Charter Oak.

When is the highest UV index in Charter Oak?

Months with the highest UV index in Charter Oak are July and August, with an average maximum UV index of 7.

What is the warmest month in Charter Oak?

August is the warmest month in Charter Oak, California, with an average high-temperature of 89.4°F (31.9°C) and an average low-temperature of 64.9°F (18.3°C).

What are the least humid months in Charter Oak?

August and November, with an average relative humidity of 45%, are the least humid months.

What is the coldest month in Charter Oak?

With an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 45.5°F (7.5°C), December is the coldest month.

What is the month with the shortest days in Charter Oak?

With an average of 9.9h of daylight, December has the shortest days of the year in Charter Oak.

What is the month with the lowest UV index in Charter Oak?

The month with the lowest UV index is December, with an average maximum UV index of 3.

Average temperature
Charter Oak, CA

Average temperature - Charter Oak, CA

The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is December (62.4°F).

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).

[Resources]

Average pressure
Charter Oak, CA

Average pressure - Charter Oak, CA

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.87").

[Resources]

Average wind speed
Charter Oak, CA

Average wind speed - Charter Oak, CA

The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

[Resources]

Average humidity
Charter Oak, CA

Average humidity - Charter Oak, CA

Months with the highest relative humidity are March and May (55%).
Months with the lowest relative humidity are August and November (45%).

[Resources]

Average rainfall
Charter Oak, CA

Average rainfall - Charter Oak, CA

The wettest month (with the highest rainfall) is February (1.46").
The driest month (with the least rainfall) is June (0.04").

[Resources]

Average rainfall days
Charter Oak, CA

Average rainfall days - Charter Oak, CA

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (1.2 days).

[Resources]

Average daylight / Average sunshine
Charter Oak, CA

Average daylight / Average sunshine - Charter Oak, 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).

Months with the most sunshine are June and July (Average sunshine: 12.1h).
Months with the least sunshine are January, February and December (Average sunshine: 7).

[Resources]

Average sunshine days
Charter Oak, CA

Average sunshine days - Charter Oak, CA

The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (22 days).

[Resources]

Average visibility
Charter Oak, CA

Average visibility - Charter Oak, 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).

[Resources]