Climate and monthly weather forecast
Norco, CA

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Weather in January

January, the same as December, is another comfortable winter month in Norco, California, with an average temperature varying between 66.2°F (19°C) and 48°F (8.9°C). As December transitions into January, Norco records an average high-temperature of a still refreshing 66.2°F (19°C), showing a gentle shift from the preceding month. Weather in January »

Weather in February

The last month of the winter, February, is another comfortable month in Norco, California, with an average temperature varying between 47.1°F (8.4°C) and 65.3°F (18.5°C). With the advent of February, Norco experiences an average high-temperature of a still enjoyable 65.3°F (18.5°C), mirroring a close resemblance to the previous month. Weather in February »

Weather in March

March, the first month of the spring in Norco, is an agreeable month, with an average temperature varying between 68.9°F (20.5°C) and 48.6°F (9.2°C). Norco, California, experiences a subtle adjustment in high-temperatures to an agreeable 68.9°F (20.5°C) with the onset of March, maintaining near parity with February's 65.3°F (18.5°C). Weather in March »

Weather in April

April, like March, is another pleasant spring month in Norco, California, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 51.3°F (10.7°C). April's onset sees an average high-temperature of a still agreeable 72.5°F (22.5°C), exhibiting a slight fluctuation from the previous month. Weather in April »

Weather in May

May, the last month of the spring in Norco, is a moderately hot month, with an average temperature fluctuating between 54.9°F (12.7°C) and 75.4°F (24.1°C). Norco ushers in May with an average high-temperature of a warm 75.4°F (24.1°C), showing a close resemblance to the previous month. Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Norco, California, with an average temperature fluctuating between 82°F (27.8°C) and 58.6°F (14.8°C). June's arrival sees a mild rise in the average high-temperature, transitioning from May's warm 75.4°F (24.1°C) to a still moderately hot 82°F (27.8°C). Weather in June »

Weather in July

July in Norco, California, is a hot summer month, with an average temperature fluctuating between 88°F (31.1°C) and 64.2°F (17.9°C). The arrival of July brings a soft temperature shift, with the average high-temperature nudging from a moderately hot 82°F (27.8°C) in June to a tropical 88°F (31.1°C). Weather in July »

Weather in August

The last month of the summer, August, is also a hot month in Norco, California, with an average temperature varying between 65.8°F (18.8°C) and 89.4°F (31.9°C). August is the month that records the highest temperatures, with averages ranging from a high of 89.4°F (31.9°C) to a low of 65.8°F (18.8°C). In August, the average heat index is appraised at a tropical 93.2°F (34°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a tropical month in Norco, California, with temperature in the range of an average high of 86.9°F (30.5°C) and an average low of 63.5°F (17.5°C). September brings an average high-temperature of a still hot 86.9°F (30.5°C), nearly identical to the preceding month. Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Norco, California, with an average temperature fluctuating between 58.8°F (14.9°C) and 79.5°F (26.4°C). October's arrival subtly correlates with a reduction in the average high-temperature, down from a hot 86.9°F (30.5°C) in September to a warm 79.5°F (26.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in Norco, California, with an average temperature varying between 52.5°F (11.4°C) and 71.8°F (22.1°C). With the arrival of November, Norco notices a mild change in the average high-temperature, sliding from October's moderately hot 79.5°F (26.4°C) to a pleasant 71.8°F (22.1°C). Weather in November »

Weather in December

December, the first month of the winter in Norco, is still a refreshing month, with temperature in the range of an average high of 63.5°F (17.5°C) and an average low of 46.9°F (8.3°C). With its high average temperature of 63.5°F (17.5°C) and a low of 46.9°F (8.3°C), December is regarded as the coldest month. Weather in December »
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Frequently asked questions

How much does it rain in Norco?

In Norco, during the entire year, the rain falls for 53.9 days and collects up to 8.86" (225mm) of precipitation.

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

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

When is Daylight Saving Time (DST) in Norco?

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.

What is the most humid month in Norco?

The most humid month is May, with an average relative humidity of 60%.

What is the driest month in Norco?

June is the month with the least rainfall in Norco, California. Rain falls for 1.3 days and accumulates 0.04" (1mm) of precipitation.

When are the longest days in Norco?

The month with the longest days in Norco is June, with an average of 14h and 24min of daylight.

What are the months with the most sunshine in Norco?

The months with the most sunshine in Norco, California, are July and August, with an average of 12.1h of sunshine.

What are the months with the highest UV index in Norco?

July and August, with an average maximum UV index of 7, are months with the highest UV index in Norco, California.

What is the warmest month in Norco?

With its average high temperature of 89.4°F (31.9°C) and a low of 65.8°F (18.8°C), August is regarded as the warmest month in Norco, California.

What is the least humid month in Norco?

With an average relative humidity of 48%, November is the least humid month in Norco, California.

What is the coldest time of year in Norco?

December, characterized by an average high temperature of 63.5°F (17.5°C) and a low temperature of 46.9°F (8.3°C), is generally the coldest month in Norco, California.

What is the rainiest month in Norco?

December is the month with the most rainfall. Rain falls for 6.5 days and accumulates 1.89" (48mm) of precipitation.

What is the month with the shortest days in Norco?

With an average of 9h and 54min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Norco?

December has the least sunshine of the year, with an average of 6.7h of sunshine.

Average temperature
Norco, CA

Average temperature - Norco, 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 (63.5°F).

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).

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Average pressure
Norco, CA

Average pressure - Norco, CA

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

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Average wind speed
Norco, CA

Average wind speed - Norco, CA

The windiest months (with the highest average wind speed) are April and May (5.4mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

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Average rainfall
Norco, CA

Average rainfall - Norco, CA

The wettest month (with the highest rainfall) is December (1.89").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days
Norco, CA

Average rainfall days - Norco, CA

The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.3 days).

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Average daylight / Average sunshine
Norco, CA

Average daylight / Average sunshine - Norco, CA

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days
Norco, CA

Average sunshine days - Norco, CA

The month with the most sunshine days is June (27.1 days).
The month with the least sunshine days is February (20.8 days).

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Average UV index
Norco, CA

Average UV index - Norco, CA

The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).

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Average visibility
Norco, CA

Average visibility - Norco, 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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Norco, California, USA

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