Climate and monthly weather forecast
Grimes, CA

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Weather in January

January is a refreshing winter month in Grimes, California, with an average temperature fluctuating between 56.8°F (13.8°C) and 41.9°F (5.5°C). The advent of January denotes an average high-temperature of a refreshing 56.8°F (13.8°C), subtly different from December's 54.5°F (12.5°C). Weather in January »

Weather in February

February, the last month of the winter in Grimes, is another refreshing month, with an average temperature varying between 59.2°F (15.1°C) and 42.4°F (5.8°C). With the arrival of February, Grimes's average high-temperature registers at a still mild 59.2°F (15.1°C), indicating a subtle variation from the previous month. Weather in February »

Weather in March

March, the first month of the spring in Grimes, is a comfortable month, with temperature in the range of an average high of 63°F (17.2°C) and an average low of 44.2°F (6.8°C). The average high-temperature is a still refreshing 63°F (17.2°C) in March, hardly different from the 59.2°F (15.1°C) recorded in February. Weather in March »

Weather in April

April is a pleasant spring month in Grimes, California, with temperature in the range of an average high of 70.5°F (21.4°C) and an average low of 48°F (8.9°C). Entering April, Grimes notices a subtle temperature elevation, with the average high-temperature advancing from March's enjoyable 63°F (17.2°C) to a pleasant 70.5°F (21.4°C). Weather in April »

Weather in May

May, the last month of the spring in Grimes, is a warm month, with an average temperature ranging between max 79.3°F (26.3°C) and min 53.2°F (11.8°C). Grimes's transition into May is marked by a minor temperature shift, moving from an agreeable 70.5°F (21.4°C) in April to a moderately hot 79.3°F (26.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Grimes, California, with an average temperature varying between 59.7°F (15.4°C) and 90°F (32.2°C). Grimes's June weather brings a rise in high-temperatures, moving from a moderately hot 79.3°F (26.3°C) in May to a tropical 90°F (32.2°C). Weather in June »

Weather in July

July in Grimes, California, is a fiery hot summer month, with an average temperature fluctuating between 62.1°F (16.7°C) and 97.2°F (36.2°C). July, marked by an average high-temperature of 97.2°F (36.2°C) and a low-temperature of 62.1°F (16.7°C), is the warmest month. Weather in July »

Weather in August

The last month of the summer, August, is also a fiery hot month in Grimes, California, with an average temperature varying between 95.7°F (35.4°C) and 61.5°F (16.4°C). The weather during August records an average high-temperature of a still very hot 95.7°F (35.4°C), closely mirroring the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is also a hot month in Grimes, California, with an average temperature varying between 60.3°F (15.7°C) and 89.8°F (32.1°C). The start of September signals a gentle decrease in the average high-temperature, transitioning from a torrid 95.7°F (35.4°C) in August to a hot 89.8°F (32.1°C). Weather in September »

Weather in October

October, like September, in Grimes, California, is a moderately hot autumn month, with temperature in the range of an average high of 77°F (25°C) and an average low of 54.5°F (12.5°C). October ushers in a slight temperature change, with average high-temperatures reducing from September's tropical 89.8°F (32.1°C) to a warm 77°F (25°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Grimes, California, with an average temperature fluctuating between 46.4°F (8°C) and 63.5°F (17.5°C). With November's arrival, Grimes, California, sees a decrease in average high-temperatures, moving from a warm 77°F (25°C) in October to an enjoyable 63.5°F (17.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also a fresh month in Grimes, California, with an average temperature varying between 54.5°F (12.5°C) and 41.4°F (5.2°C). December is the coldest month, with the temperature often reaching an average high of 54.5°F (12.5°C) and an average low of 41.4°F (5.2°C). Weather in December »
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Frequently asked questions

How much does it rain in Grimes?

Throughout the year, in Grimes, California, there are 75.1 rainfall days, and 17.09" (434mm) of precipitation is accumulated.

What are the months with the lowest UV index in Grimes?

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

What is the wettest month in Grimes?

The month with the most rainfall in Grimes, California, is February, when the rain falls for 9.3 days and typically aggregates up to 3.07" (78mm) of precipitation.

What is the most humid month in Grimes?

March is the most humid month in Grimes, California, with an average relative humidity of 73%.

When is Daylight Saving Time (DST) in Grimes?

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 Grimes?

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

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

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

What is the hottest time of year in Grimes?

The warmest time of the year is July, with temperatures averaging a high of 97.2°F (36.2°C) and a low of 62.1°F (16.7°C).

What is the least humid month in Grimes?

The months with the lowest humidity in Grimes, California, are July and September, with an average relative humidity of 38%.

What is the driest month in Grimes?

July and August are months with the least rain when the rain falls for 0.9 days and typically aggregates up to 0.04" (1mm) of rain.

What month has the most sunshine in Grimes?

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

What month is the coldest in Grimes?

The month of December, characterized by an average high of 54.5°F (12.5°C) and a low of 41.4°F (5.2°C), is recognized as the coldest.

What is the month with the shortest days in Grimes?

With an average of 9h and 30min of daylight, December has the shortest days of the year in Grimes.

What is the month with the least sunshine in Grimes?

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

Average temperature
Grimes, CA

Average temperature - Grimes, CA

The warmest month (with the highest average high temperature) is July (97.2°F).
The month with the lowest average high temperature is December (54.5°F).

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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Average pressure
Grimes, CA

Average pressure - Grimes, 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
Grimes, CA

Average wind speed - Grimes, CA

The windiest month (with the highest average wind speed) is March (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity
Grimes, CA

Average humidity - Grimes, CA

The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July and September (38%).

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Average rainfall
Grimes, CA

Average rainfall - Grimes, CA

The wettest month (with the highest rainfall) is February (3.07").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Grimes, CA

Average rainfall days - Grimes, CA

The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is July (0.9 days).

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Average daylight / Average sunshine
Grimes, CA

Average daylight / Average sunshine - Grimes, 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 30min).

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
Grimes, CA

Average sunshine days - Grimes, CA

The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is March (16.2 days).

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Average UV index
Grimes, CA

Average UV index - Grimes, 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).

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Average visibility
Grimes, CA

Average visibility - Grimes, 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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Grimes, California, USA

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