Climate and monthly weather forecast
Halcyon, CA

Weather in January

January, the same as December, is another enjoyable winter month in Halcyon, California, with an average temperature fluctuating between 63°F (17.2°C) and 47.5°F (8.6°C). In Halcyon, the average high-temperature in January is relatively the same as in December - a still enjoyable 63°F (17.2°C). Weather in January »

Weather in February

February, the last month of the winter in Halcyon, is another comfortable month, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 62.2°F (16.8°C). In February, the average high-temperature is relatively the same as in January - a still comfortable 62.2°F (16.8°C). Weather in February »

Weather in March

March, the first month of the spring in Halcyon, is still a comfortable month, with an average temperature varying between 64.9°F (18.3°C) and 46.9°F (8.3°C). In March, the average high-temperature is relatively the same as in February - a still enjoyable 64.9°F (18.3°C). Weather in March »

Weather in April

April, the same as March, is another enjoyable spring month in Halcyon, California, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 67.6°F (19.8°C). In Halcyon, California, the average high-temperature in April is essentially the same as in March - a still comfortable 67.6°F (19.8°C). Weather in April »

Weather in May

May, the last month of the spring in Halcyon, is an agreeable month, with an average temperature ranging between min 51.4°F (10.8°C) and max 70.5°F (21.4°C). In May, the average high-temperature is almost the same as in April - a pleasant 70.5°F (21.4°C). Weather in May »

Weather in June

June, the first month of the summer in Halcyon, is a warm month, with temperature in the range of an average high of 75.4°F (24.1°C) and an average low of 55°F (12.8°C). In Halcyon, the average high-temperature in June is practically the same as in May - a moderately hot 75.4°F (24.1°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Halcyon, California, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 58.5°F (14.7°C). In Halcyon, the average high-temperature in July is almost the same as in June - a still warm 78.6°F (25.9°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Halcyon, California, with an average temperature ranging between max 78.8°F (26°C) and min 59.2°F (15.1°C). In August, the average high-temperature is essentially the same as in July - a still warm 78.8°F (26°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Halcyon, California, with an average temperature ranging between max 79.5°F (26.4°C) and min 59.9°F (15.5°C). With an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 59.9°F (15.5°C), September is the warmest month. Weather in September »

Weather in October

October, like September, in Halcyon, California, is another warm autumn month, with an average temperature fluctuating between 56.7°F (13.7°C) and 74.3°F (23.5°C). In Halcyon, California, the average high-temperature in October is practically the same as in September - a still warm 74.3°F (23.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an enjoyable month in Halcyon, California, with an average temperature ranging between min 51.4°F (10.8°C) and max 67.8°F (19.9°C). In November, the average high-temperature slightly decreases from a warm 74.3°F (23.5°C) in October to a comfortable 67.8°F (19.9°C). Weather in November »

Weather in December

The first month of the winter, December, is also an enjoyable month in Halcyon, California, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 61.2°F (16.2°C). The coldest month is December, with an average high-temperature of 61.2°F (16.2°C) and an average low-temperature of 46.8°F (8.2°C). Weather in December »
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FAQ

How many days does it rain in Halcyon?

In Halcyon, during the entire year, the rain falls for 47.6 days and collects up to 6.93" (176mm) of precipitation.

When is the lowest UV index in Halcyon?

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index.

What is the month with the least sunshine in Halcyon?

The months with the least sunshine in Halcyon, California, are February and December, with an average of 6.5h of sunshine.

What is the most humid month in Halcyon?

The most humid month is March, with an average relative humidity of 68%.

What is the rainiest month in Halcyon?

March is the month with the most rainfall in Halcyon, California. Rain falls for 8.4 days and accumulates 1.61" (41mm) of precipitation.

When is Daylight Saving Time (DST) in Halcyon?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Halcyon, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from PDT to PST.

What is the driest month in Halcyon?

June and August are months with the least rain when the rain falls for 1 days and typically aggregates up to 0.04" (1mm) of rain.

When are the longest days in Halcyon?

June has the longest days of the year in Halcyon, California, with an average of 14h and 29min of daylight.

What is the month with the most sunshine in Halcyon?

The months with the most sunshine in Halcyon are June through August, with an average of 12h of sunshine.

When is the highest UV index in Halcyon?

The months with the highest UV index are June and August, with an average maximum UV index of 6.

What is the warmest month in Halcyon?

The warmest month is September, with an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 59.9°F (15.5°C).

What is the least humid month in Halcyon?

The least humid month in Halcyon is October, with an average relative humidity of 58%.

What is the coldest month in Halcyon?

December is the coldest month in Halcyon, California, with an average high-temperature of 61.2°F (16.2°C) and an average low-temperature of 46.8°F (8.2°C).

What is the month with the shortest days in Halcyon?

December has the shortest days of the year in Halcyon, California, with an average of 9h and 50min of daylight.

Average temperature
Halcyon, CA

Average temperature - Halcyon, CA

The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is December (61.2°F).

The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).

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Average pressure
Halcyon, CA

Average pressure - Halcyon, CA

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

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Average wind speed
Halcyon, CA

Average wind speed - Halcyon, CA

The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average rainfall
Halcyon, CA

Average rainfall - Halcyon, CA

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

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Average rainfall days
Halcyon, CA

Average rainfall days - Halcyon, CA

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.8 days).

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Average daylight / Average sunshine
Halcyon, CA

Average daylight / Average sunshine - Halcyon, CA

The month with the longest days is June (Average daylight: 14h and 29min).
The month with the shortest days is December (Average daylight: 9h and 50min).

The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).

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Average sunshine days
Halcyon, CA

Average sunshine days - Halcyon, CA

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (21 days).

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Average UV index
Halcyon, CA

Average UV index - Halcyon, CA

The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average visibility
Halcyon, CA

Average visibility - Halcyon, 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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