Climate and monthly weather forecast
Thermalito, CA

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Weather in January

January in Thermalito, California, is a mild winter month, with an average temperature fluctuating between 41.9°F (5.5°C) and 56.8°F (13.8°C). January's advent presents an average high-temperature of a moderate 56.8°F (13.8°C), indicating a slight variation from the conditions of the previous month. Weather in January »

Weather in February

The last month of the winter, February, is another mild month in Thermalito, California, with temperature in the range of an average low of 41.7°F (5.4°C) and an average high of 58.6°F (14.8°C). As February takes its course, Thermalito's average high-temperature registers at a still moderate 58.6°F (14.8°C), closely aligning with the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Thermalito, is a comfortable month, with an average temperature ranging between max 61.3°F (16.3°C) and min 43.9°F (6.6°C). Thermalito measures an average high-temperature of an enjoyable 61.3°F (16.3°C) in March, nearly consistent with the preceding month. Weather in March »

Weather in April

April in Thermalito, California, is a pleasant spring month, with an average temperature ranging between min 47.7°F (8.7°C) and max 68.9°F (20.5°C). The shift from March to April sees a slight increase in the average high-temperature, transitioning from a comfortable 61.3°F (16.3°C) to a pleasant 68.9°F (20.5°C). Weather in April »

Weather in May

May, the last month of the spring in Thermalito, is a warm month, with temperature in the range of an average low of 53.1°F (11.7°C) and an average high of 77.5°F (25.3°C). The onset of May marks a slight increase in the average high-temperature, moving from a pleasant 68.9°F (20.5°C) in April to a moderately hot 77.5°F (25.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Thermalito, California, with an average temperature ranging between max 88.3°F (31.3°C) and min 60.1°F (15.6°C). Thermalito sees a rise in temperature during June, with average high-temperatures transitioning from a warm 77.5°F (25.3°C) in May to a hot 88.3°F (31.3°C). Weather in June »

Weather in July

July in Thermalito, California, is a torrid summer month, with an average temperature varying between 63.7°F (17.6°C) and 95.9°F (35.5°C). Thermalito's warmest weather arrives in July, when temperatures average a high of 95.9°F (35.5°C) and a low of 63.7°F (17.6°C). Weather in July »

Weather in August

August, the last month of the summer in Thermalito, is also a hot month, with an average temperature ranging between min 62.2°F (16.8°C) and max 94.6°F (34.8°C). Thermalito marks the start of August with an average high-temperature of a hot 94.6°F (34.8°C), hinting at a slight fluctuation from July's 95.9°F (35.5°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a tropical month in Thermalito, California, with an average temperature ranging between min 61°F (16.1°C) and max 88.9°F (31.6°C). The start of September signals a gentle decrease in the average high-temperature, transitioning from a tropical 94.6°F (34.8°C) in August to a still hot 88.9°F (31.6°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Thermalito, California, with an average temperature ranging between max 76.1°F (24.5°C) and min 54°F (12.2°C). The onset of October coincides with a reduction in the average high-temperature, falling from a hot 88.9°F (31.6°C) in September to a moderately hot 76.1°F (24.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Thermalito, is another comfortable month, with an average temperature ranging between max 63.1°F (17.3°C) and min 45.7°F (7.6°C). Stepping into November, Thermalito observes a temperature decline, with the average high falling from October's moderately hot 76.1°F (24.5°C) to an enjoyable 63.1°F (17.3°C). Weather in November »

Weather in December

December, the first month of the winter in Thermalito, is also a fresh month, with an average temperature ranging between max 54.5°F (12.5°C) and min 40.6°F (4.8°C). December is the coldest month, with an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 40.6°F (4.8°C). Weather in December »
Updated: Jun 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How much does it rain?

Throughout the year, there are 80.4 rainfall days, and 24.21" (615mm) of precipitation is accumulated.

When it does not snow?

In Thermalito, snow does not fall in January through November.

How many days does it snow?

Throughout the year, there are 0.1 snowfall days.

What are the months with the lowest UV index?

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

What is the most humid month?

March is the most humid month, with an average relative humidity of 72%.

What is the rainiest month?

The month with the most rainfall is March, when the rain falls for 14.3 days and typically aggregates up to 4.61" (117mm) of precipitation.

When is Daylight Saving Time (DST)?

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?

The month with the longest days is June, with an average of 14h and 54min of daylight.

What is the month with the highest UV index?

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

What month is the hottest?

The warmest period tends to be July, when average temperatures fluctuate between a high of 95.9°F (35.5°C) and a low of 63.7°F (17.6°C).

What is the least humid month?

July is the least humid month, with an average relative humidity of 33%.

What is the driest month in Thermalito?

July is the month with the least rainfall. Rain falls for 1.3 days and accumulates 0.04" (1mm) of precipitation.

What month has the most sunshine?

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

What time of the year is the coldest?

Thermalito reaches its average lowest temperatures in December, measuring 54.5°F (12.5°C) at the peak and 40.6°F (4.8°C) at the lowest.

When does it snow?

The only month with snowfall is December.

When does it snow the most in Thermalito?

The month with the most snowfall days is December, when snow falls for 0.1 days.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

What is the month with the least sunshine?

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

Average temperature
Thermalito, CA

Average temperature - Thermalito, CA

The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (54.5°F).

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is December (40.6°F).

Average pressure
Thermalito, CA

Average pressure - Thermalito, 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).

Average wind speed
Thermalito, CA

Average wind speed - Thermalito, CA

The windiest month (with the highest average wind speed) is March (6.3mph).
The calmest months (with the lowest average wind speed) are August and November (5.2mph).

Average humidity
Thermalito, CA

Average humidity - Thermalito, CA

The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is July (33%).

Average rainfall
Thermalito, CA

Average rainfall - Thermalito, CA

The wettest month (with the highest rainfall) is March (4.61").
The driest month (with the least rainfall) is July (0.04").

Average rainfall days
Thermalito, CA

Average rainfall days - Thermalito, CA

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (1.3 days).

Average snowfall days
Thermalito, CA

Average snowfall days - Thermalito, CA

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight / Average sunshine
Thermalito, CA

Average daylight / Average sunshine - Thermalito, 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 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days
Thermalito, CA

Average sunshine days - Thermalito, CA

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is March (15.5 days).

Average UV index
Thermalito, CA

Average UV index - Thermalito, CA

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

Average visibility
Thermalito, CA

Average visibility - Thermalito, 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).

Thermalito, California, USA

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