Monthly weather forecast and climate
Newcastle, CA

Weather in January

January, like December, in Newcastle, California, is a cool winter month, with average temperature fluctuating between 39.7°F (4.3°C) and 55°F (12.8°C). In January, the average high-temperature is essentially the same as in December - a still fresh 55°F (12.8°C). Weather in January »

Weather in February

February, the last month of the winter, in Newcastle, is a mild month, with average temperature fluctuating between 56.5°F (13.6°C) and 39.7°F (4.3°C). In Newcastle, California, the average high-temperature in February is essentially the same as in January - a mild 56.5°F (13.6°C). Weather in February »

Weather in March

The first month of the spring, March, is also a moderate month in Newcastle, California, with average temperature varying between 58.8°F (14.9°C) and 41.9°F (5.5°C). In March, the average high-temperature is practically the same as in February - a still mild 58.8°F (14.9°C). Weather in March »

Weather in April

April is an enjoyable spring month in Newcastle, California, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 45.1°F (7.3°C). In Newcastle, the average high-temperature slightly increases, from a mild 58.8°F (14.9°C) in March, to an enjoyable 65.8°F (18.8°C). Weather in April »

Weather in May

May, the last month of the spring, in Newcastle, is a moderately hot month, with average temperature ranging between min 49.6°F (9.8°C) and max 73.8°F (23.2°C). In May, the average high-temperature marginally rises, from an enjoyable 65.8°F (18.8°C) in April, to a moderately hot 73.8°F (23.2°C). Weather in May »

Weather in June

June, the first month of the summer, in Newcastle, is still a warm month, with average temperature ranging between max 84.6°F (29.2°C) and min 56.7°F (13.7°C). In June, the average high-temperature increases, from a warm 73.8°F (23.2°C) in May, to a still moderately hot 84.6°F (29.2°C). Weather in June »

Weather in July

July in Newcastle, California, is a hot summer month, with average temperature ranging between max 91.9°F (33.3°C) and min 60.6°F (15.9°C). July is the warmest month, with an average high-temperature of 91.9°F (33.3°C) and an average low-temperature of 60.6°F (15.9°C). Weather in July »

Weather in August

August, the last month of the summer, in Newcastle, is another tropical month, with average temperature ranging between min 60.3°F (15.7°C) and max 91°F (32.8°C). In Newcastle, California, the average high-temperature is almost the same as in July - a still hot 91°F (32.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Newcastle, California, with average temperature varying between 85.8°F (29.9°C) and 58.1°F (14.5°C). In September, the average high-temperature is almost the same as in August - a warm 85.8°F (29.9°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Newcastle, California, with average temperature varying between 52.3°F (11.3°C) and 73.6°F (23.1°C). In October, the average high-temperature drops, from 85.8°F (29.9°C) in September, to a still moderately hot 73.6°F (23.1°C). Weather in October »

Weather in November

November, the last month of the autumn, in Newcastle, is another comfortable month, with average temperature fluctuating between 61.3°F (16.3°C) and 44.4°F (6.9°C). In Newcastle, California, the average high-temperature in November drops, from a warm 73.6°F (23.1°C) in October, to a comfortable 61.3°F (16.3°C). Weather in November »

Weather in December

December, the first month of the winter, in Newcastle, is still a cool month, with average temperature ranging between min 39.2°F (4°C) and max 53.4°F (11.9°C). With an average high-temperature of 53.4°F (11.9°C) and an average low-temperature of 39.2°F (4°C), December is the coldest month. Weather in December »
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FAQ

How many days does it rain in Newcastle?

In Newcastle, during the entire year, the rain falls for 84.8 days and collects up to 28.86" (733mm) of precipitation.

How much does it snow in Newcastle?

In Newcastle, during the entire year, snow aggregates up to 2.09" (53mm).

When it does not snow in Newcastle?

In Newcastle snow does not fall in January, April through November.

What is the month with the least sunshine in Newcastle?

January and December, with an average of 5.8h of sunshine, are months with the least sunshine in Newcastle, California.

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

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

When does it snow in Newcastle?

Months with snowfall in Newcastle, California, are February, March and December.

What is the snowiest month in Newcastle?

The month with the most snowfall in Newcastle is February when snow falls for 0.6 days and typically aggregates up to 1.18" (30mm) of snow.

What is the most humid month in Newcastle?

With an average relative humidity of 75%, March is the most humid month.

What is the wettest month in Newcastle?

The month with the most rainfall is March when the rain falls for 15.4 days and typically aggregates up to 5.63" (143mm) of precipitation.

When are the longest days in Newcastle?

June has the longest days of the year, with an average of 14.9h of daylight.

What is the month with the highest UV index in Newcastle?

June and July, with an average maximum UV index of 7, are months with the highest UV index.

What is the warmest month in Newcastle?

With an average high-temperature of 91.9°F (33.3°C) and an average low-temperature of 60.6°F (15.9°C), July is the warmest month.

What is the least humid month in Newcastle?

The least humid month in Newcastle, California, is July, with an average relative humidity of 38%.

What is the driest month in Newcastle?

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

What month has the most sunshine in Newcastle?

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

What is the coldest month in Newcastle?

The coldest month is December, with an average high-temperature of 53.4°F (11.9°C) and an average low-temperature of 39.2°F (4°C).

What is the month with the shortest days in Newcastle?

With an average of 9.5h of daylight, December has the shortest days of the year in Newcastle, California.

Average temperature
Newcastle, CA

Average temperature - Newcastle, CA

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (53.4°F).

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is December (39.2°F).

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Average pressure
Newcastle, CA

Average pressure - Newcastle, CA

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed
Newcastle, CA

Average wind speed - Newcastle, CA

The windiest months (with the highest average wind speed) are February and March (5.7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average rainfall
Newcastle, CA

Average rainfall - Newcastle, CA

The wettest month (with the highest rainfall) is March (5.63").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Newcastle, CA

Average rainfall days - Newcastle, CA

The month with the highest number of rainy days is March (15.4 days).
The month with the least rainy days is July (1 days).

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Average snowfall
Newcastle, CA

Average snowfall - Newcastle, CA

The month with the highest snowfall is February (1.18").
Months with the least snowfall are January, April, May, June, July, August, September, October and November (0").

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Average snowfall days
Newcastle, CA

Average snowfall days - Newcastle, CA

The month with the highest number of snowfall days is February (0.6 days).
Months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
Newcastle, CA

Average daylight / Average sunshine - Newcastle, CA

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are January and December (Average sunshine: 5.8).

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Average sunshine days
Newcastle, CA

Average sunshine days - Newcastle, CA

The month with the most sunshine days is July (29.6 days).
The month with the least sunshine days is March (14.6 days).

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Average UV index
Newcastle, CA

Average UV index - Newcastle, CA

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

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Average visibility
Newcastle, CA

Average visibility - Newcastle, 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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