Climate and monthly weather forecast
Atwater, CA

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Weather in January

January, the same as December, in Atwater, California, is another refreshing winter month, with an average temperature fluctuating between 42.1°F (5.6°C) and 58.5°F (14.7°C). The arrival of January denotes a barely perceptible change in the average high-temperatures to a still mild 58.5°F (14.7°C) from December's 56.1°F (13.4°C). Weather in January »

Weather in February

The last month of the winter, February, is an enjoyable month in Atwater, California, with an average temperature fluctuating between 61.3°F (16.3°C) and 42.3°F (5.7°C). February's onset brings an average high-temperature of a comfortable 61.3°F (16.3°C), showing a minute difference from January's 58.5°F (14.7°C). Weather in February »

Weather in March

March, the first month of the spring in Atwater, is still a comfortable month, with an average temperature varying between 44.6°F (7°C) and 66.4°F (19.1°C). As March takes its course, Atwater's average high-temperature registers at a still refreshing 66.4°F (19.1°C), closely aligning with the preceding month. Weather in March »

Weather in April

April in Atwater, California, is an agreeable spring month, with temperature in the range of an average low of 48.2°F (9°C) and an average high of 73°F (22.8°C). The commencement of April sees a minor shift in the average high-temperature, moving from an enjoyable 66.4°F (19.1°C) in March to a pleasant 73°F (22.8°C). Weather in April »

Weather in May

May, the last month of the spring in Atwater, is a moderately hot month, with an average temperature fluctuating between 81°F (27.2°C) and 54.1°F (12.3°C). A soft shift in the average high-temperature is noticeable in May, transitioning from a pleasant 73°F (22.8°C) in April to a warm 81°F (27.2°C). Weather in May »

Weather in June

June, the first month of the summer in Atwater, is a tropical month, with an average temperature fluctuating between 91.6°F (33.1°C) and 60.3°F (15.7°C). June shows a rise in the average high-temperature, moving from May's moderately hot 81°F (27.2°C) to a tropical 91.6°F (33.1°C). Weather in June »

Weather in July

July is a sweltering summer month in Atwater, California, with an average temperature varying between 63.9°F (17.7°C) and 98.6°F (37°C). In Atwater, July records the highest average temperatures, peaking at 98.6°F (37°C) and reaching a low of 63.9°F (17.7°C). Weather in July »

Weather in August

August, the last month of the summer in Atwater, is also a sweltering month, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 97.3°F (36.3°C). In August, the average high-temperature registers at a still very hot 97.3°F (36.3°C), nearly identical to July's 98.6°F (37°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a hot month in Atwater, California, with an average temperature ranging between min 61.3°F (16.3°C) and max 91.4°F (33°C). During the shift to September, a minor reduction in average high-temperature is observed, shifting from a very hot 97.3°F (36.3°C) in August to a hot 91.4°F (33°C). Weather in September »

Weather in October

October, like September, in Atwater, California, is another warm autumn month, with an average temperature varying between 78.4°F (25.8°C) and 54.9°F (12.7°C). October weather is marked by a drop in the average high-temperature, falling from a hot 91.4°F (33°C) in September to a warm 78.4°F (25.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Atwater, is another comfortable month, with an average temperature fluctuating between 46.8°F (8.2°C) and 65.7°F (18.7°C). November weather is marked by a drop in the average high-temperature, falling from a moderately hot 78.4°F (25.8°C) in October to a comfortable 65.7°F (18.7°C). Weather in November »

Weather in December

The first month of the winter, December, is also a moderate month in Atwater, California, with an average temperature varying between 41.9°F (5.5°C) and 56.1°F (13.4°C). December brings the lowest temperatures, with an average high of 56.1°F (13.4°C) and an average low of 41.9°F (5.5°C). Weather in December »

Frequently asked questions

What is the most humid month?

With an average relative humidity of 71%, January is the most humid month.

How many days does it rain?

In Atwater, during the entire year, the rain falls for 36.8 days and collects up to 3.03" (77mm) of precipitation.

When is the lowest UV index?

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

What is the wettest month?

The wettest months are March and December, with an average 0.55" (14mm) of rainfall.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Atwater, 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 driest month?

The months with the least rainfall are June through September Rain falls for 0.5 days and accumulates 0.04" (1mm) of rain.

When are the longest days?

June has the longest days of the year in Atwater, with an average of 14h and 42min of daylight.

What is the month with the highest UV index?

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

What are the warmest months?

The warmest temperatures occur during July, when averages reach a peak of 98.6°F (37°C) and a low of 63.9°F (17.7°C).

What is the least humid month?

With an average relative humidity of 34%, July is the least humid month.

What month has the most sunshine?

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

What part of the year is the coldest?

With average high and low temperatures of 56.1°F (13.4°C) and 41.9°F (5.5°C) respectively, December is Atwater's coldest month.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 36min of daylight.

What is the month with the least sunshine?

With an average of 6.2h of sunshine, December has the least sunshine of the year.

Average temperature
Atwater, CA

Average temperature - Atwater, CA

The warmest month (with the highest average high temperature) is July (98.6°F).
The month with the lowest average high temperature is December (56.1°F).

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).

Average pressure
Atwater, CA

Average pressure - Atwater, CA

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Atwater, CA

Average wind speed - Atwater, CA

The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).

Average humidity
Atwater, CA

Average humidity - Atwater, CA

The month with the highest relative humidity is January (71%).
The month with the lowest relative humidity is July (34%).

Average rainfall
Atwater, CA

Average rainfall - Atwater, CA

The wettest months (with the highest rainfall) are March and December (0.55").
The driest months (with the least rainfall) are June, July, August and September (0.04").

Average rainfall days
Atwater, CA

Average rainfall days - Atwater, CA

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is June (0.5 days).

Average daylight / Average sunshine
Atwater, CA

Average daylight / Average sunshine - Atwater, CA

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

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

Average sunshine days
Atwater, CA

Average sunshine days - Atwater, CA

The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is February (23 days).

Average UV index
Atwater, CA

Average UV index - Atwater, CA

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

Average visibility
Atwater, CA

Average visibility - Atwater, 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).

Atwater, California, USA

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