Climate and monthly weather forecast
Glenn, CA

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Weather in January

January in Glenn, California, is a moderate winter month, with an average temperature varying between 42.8°F (6°C) and 57.7°F (14.3°C). With the advent of January, Glenn experiences an average high-temperature of a mild 57.7°F (14.3°C), mirroring a close resemblance to the previous month. Weather in January »

Weather in February

February, the last month of the winter in Glenn, is also a moderate month, with temperature in the range of an average low of 42.3°F (5.7°C) and an average high of 59°F (15°C). February's onset brings an average high-temperature of a still refreshing 59°F (15°C), showing a minute difference from January's 57.7°F (14.3°C). Weather in February »

Weather in March

March, the first month of the spring in Glenn, is an enjoyable month, with an average temperature ranging between max 62.6°F (17°C) and min 44.2°F (6.8°C). March's advent notes a subtle adjustment in average high-temperature to a still refreshing 62.6°F (17°C) from February. Weather in March »

Weather in April

April in Glenn, California, is a pleasant spring month, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 71.1°F (21.7°C). Glenn perceives a slight temperature ascent during April, with average high-temperatures adjusting from an enjoyable 62.6°F (17°C) in March to a pleasant 71.1°F (21.7°C). Weather in April »

Weather in May

May, the last month of the spring in Glenn, is a warm month, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 54.3°F (12.4°C). The start of May brings a subtle rise in the average high-temperature, moving from a pleasant 71.1°F (21.7°C) in April to a moderately hot 79.5°F (26.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Glenn, California, with an average temperature varying between 90.3°F (32.4°C) and 61.3°F (16.3°C). The shift into June is accompanied by a temperature increase, with the average high-temperature rising from a moderately hot 79.5°F (26.4°C) in May to a tropical 90.3°F (32.4°C). Weather in June »

Weather in July

July in Glenn, California, is a very hot summer month, with temperature in the range of an average high of 98.4°F (36.9°C) and an average low of 64.8°F (18.2°C). July temperatures tend to peak at an average high of 98.4°F (36.9°C) and dip to a low of 64.8°F (18.2°C). Weather in July »

Weather in August

The last month of the summer, August, is also a sweltering month in Glenn, California, with an average temperature varying between 96.8°F (36°C) and 63.7°F (17.6°C). With the onset of August, the average high-temperature stands at a still very hot 96.8°F (36°C), closely aligned with July's 98.4°F (36.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a hot month in Glenn, California, with an average temperature varying between 90.5°F (32.5°C) and 61.9°F (16.6°C). The transition to September results in a modest reduction in average high-temperature, moving from a very hot 96.8°F (36°C) in August to a hot 90.5°F (32.5°C). Weather in September »

Weather in October

October, like September, in Glenn, California, is another warm autumn month, with an average temperature varying between 54.7°F (12.6°C) and 77.2°F (25.1°C). October's onset brings a reduction in the average high-temperature, from a tropical 90.5°F (32.5°C) in September to a moderately hot 77.2°F (25.1°C). Weather in October »

Weather in November

November, the last month of the autumn in Glenn, is another refreshing month, with an average temperature ranging between max 64.2°F (17.9°C) and min 45.9°F (7.7°C). Welcoming November, Glenn observes a shift in the average high-temperature, falling from October's moderately hot 77.2°F (25.1°C) to a comfortable 64.2°F (17.9°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cool month in Glenn, California, with an average temperature fluctuating between 41.9°F (5.5°C) and 54.9°F (12.7°C). The coldest month is December, with an average high-temperature of 54.9°F (12.7°C) and an average low-temperature of 41.9°F (5.5°C). Weather in December »
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Frequently asked questions

How much does it rain in Glenn?

In Glenn, California, during the entire year, the rain falls for 82.1 days and collects up to 17.24" (438mm) of precipitation.

What is the rainiest month in Glenn?

February is the month with the most rainfall. Rain falls for 9.5 days and accumulates 3.19" (81mm) of precipitation.

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

The months with the lowest UV index in Glenn, California, are February, November and December, with an average maximum UV index of 3.

What is the most humid month in Glenn?

March is the most humid month, with an average relative humidity of 69%.

When is Daylight Saving Time (DST) in Glenn?

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 are the longest days in Glenn?

June has the longest days of the year, with an average of 14h and 54min of daylight.

When is the highest UV index in Glenn?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Glenn, California.

What is the hottest time of year in Glenn?

July, known for its average high temperature of 98.4°F (36.9°C) and an average low temperature of 64.8°F (18.2°C), is the warmest month in Glenn.

What is the least humid month in Glenn?

July and August, with an average relative humidity of 32%, are the least humid months in Glenn.

What is the driest month in Glenn?

July and August are months with the least rain when the rain falls for 1.6 days and typically aggregates up to 0.08" (2mm) of rain.

What month has the most sunshine in Glenn?

With an average of 12.2h of sunshine, July has the most sunshine of the year in Glenn, California.

What are the coldest months in Glenn?

Glenn notes the coldest temperatures in December, with a average high of 54.9°F (12.7°C) and a low of 41.9°F (5.5°C).

What is the month with the shortest days in Glenn?

The month with the shortest days in Glenn, California, is December, with an average of 9h and 24min of daylight.

What is the month with the least sunshine in Glenn?

With an average of 5.8h of sunshine, December has the least sunshine of the year.

Average temperature
Glenn, CA

Average temperature - Glenn, CA

The warmest month (with the highest average high temperature) is July (98.4°F).
The month with the lowest average high temperature is December (54.9°F).

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).

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Average pressure
Glenn, CA

Average pressure - Glenn, CA

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

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Average wind speed
Glenn, CA

Average wind speed - Glenn, CA

The windiest month (with the highest average wind speed) is March (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity
Glenn, CA

Average humidity - Glenn, CA

The month with the highest relative humidity is March (69%).
The months with the lowest relative humidity are July and August (32%).

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Average rainfall
Glenn, CA

Average rainfall - Glenn, CA

The wettest month (with the highest rainfall) is February (3.19").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days
Glenn, CA

Average rainfall days - Glenn, CA

The month with the highest number of rainy days is March (14.1 days).
The month with the least rainy days is July (1.6 days).

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Average daylight / Average sunshine
Glenn, CA

Average daylight / Average sunshine - Glenn, CA

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

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days
Glenn, CA

Average sunshine days - Glenn, CA

The month with the most sunshine days is July (29.5 days).
The month with the least sunshine days is March (16.1 days).

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Average UV index
Glenn, CA

Average UV index - Glenn, CA

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are February, November and December (UV index 3).

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Average visibility
Glenn, CA

Average visibility - Glenn, 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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Glenn, California, USA

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