Monthly weather forecast and climate
Grimes, CA

Weather in January

January is a mild winter month in Grimes, California, with average temperature varying between 41.9°F (5.5°C) and 56.8°F (13.8°C). In January, the average high-temperature is practically the same as in December - a moderate 56.8°F (13.8°C). Weather in January »

Weather in February

The last month of the winter, February, is also a moderate month in Grimes, California, with temperature in the range of an average high of 59.2°F (15.1°C) and an average low of 42.4°F (5.8°C). In Grimes, the average high-temperature in February is relatively the same as in January - a still mild 59.2°F (15.1°C). Weather in February »

Weather in March

March, the first month of the spring, in Grimes, is an enjoyable month, with average temperature varying between 63°F (17.2°C) and 44.2°F (6.8°C). In Grimes, the average high-temperature is practically the same as in February - a comfortable 63°F (17.2°C). Weather in March »

Weather in April

April in Grimes, California, is an agreeable spring month, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 70.5°F (21.4°C). In Grimes, the average high-temperature in April slightly increases, from a comfortable 63°F (17.2°C) in March, to an agreeable 70.5°F (21.4°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderately hot month in Grimes, California, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 79.3°F (26.3°C). In Grimes, the average high-temperature in May marginally rises, from an agreeable 70.5°F (21.4°C) in April, to a warm 79.3°F (26.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Grimes, California, with average temperature ranging between min 59.7°F (15.4°C) and max 90°F (32.2°C). In Grimes, the average high-temperature in June increases, 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 is a sweltering summer month in Grimes, California, with average temperature varying between 62.1°F (16.7°C) and 97.2°F (36.2°C). The warmest month is July, with an average high-temperature of 97.2°F (36.2°C) and an average low-temperature of 62.1°F (16.7°C). Weather in July »

Weather in August

The last month of the summer, August, is another torrid month in Grimes, California, with average temperature varying between 61.5°F (16.4°C) and 95.7°F (35.4°C). In August, the average high-temperature is almost the same as in July - a still torrid 95.7°F (35.4°C). Weather in August »

Weather in September

September, the first month of the autumn, in Grimes, is still a tropical month, with average temperature fluctuating between 60.3°F (15.7°C) and 89.8°F (32.1°C). In September, the average high-temperature slightly decreases, 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, the same as September, is a moderately hot autumn month in Grimes, California, 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). In October, the average high-temperature decreases, from a tropical 89.8°F (32.1°C) in September, to a moderately hot 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 average temperature varying between 63.5°F (17.5°C) and 46.4°F (8°C). In Grimes, the average high-temperature decreases, from a moderately hot 77°F (25°C) in October, to an enjoyable 63.5°F (17.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Grimes, is also a fresh month, with average temperature ranging between max 54.5°F (12.5°C) and min 41.4°F (5.2°C). With an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 41.4°F (5.2°C), December is the coldest month. Weather in December »
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FAQ

How many days 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.

When is the lowest UV index in Grimes?

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

What is the rainiest month in Grimes?

February is the month with the most rainfall in Grimes, California. Rain falls for 9.3 days and accumulates 3.07" (78mm) of precipitation.

What is the most humid month in Grimes?

With an average relative humidity of 73%, March is the most humid month.

When are the longest days in Grimes?

With an average of 14.9h of daylight, June has the longest days of the year.

When is the highest UV index in Grimes?

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

What is the warmest month in Grimes?

The warmest month in Grimes is July, with an average high-temperature of 97.2°F (36.2°C) and an average low-temperature of 62.1°F (16.7°C).

What is the least humid month in Grimes?

Months with the lowest humidity 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 in Grimes, California, 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?

The month with the most sunshine in Grimes, California, is July, with an average of 12.2h of sunshine.

What is the coldest month in Grimes?

The coldest month in Grimes, California, is December, with an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 41.4°F (5.2°C).

What is the month with the shortest days in Grimes?

With an average of 9.5h of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Grimes?

December has the least sunshine of the year in Grimes, 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").
The month with the lowest atmospheric pressure is June (29.9").

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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%).
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: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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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

Months with the highest UV index are June and July (UV index 7).
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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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