August weather forecast
Grimes, CA

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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).

Temperature

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. A noticeable downturn in temperature characterizes the August nights, averaging at an enjoyable 61.5°F (16.4°C).

Humidity

In August, the average relative humidity is 39%.

Rainfall

The months with the least rainfall in Grimes, California, are July and August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.

Daylight

The average length of the day in August in Grimes is 13h and 38min.
On the first day of the month, sunrise is at 6:08 am and sunset at 8:18 pm. On the last day of August, sunrise is at 6:36 am and sunset at 7:39 pm PDT.

Sunshine

The average sunshine in August in Grimes is 11.9h.

UV index

In Grimes, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

How hot is it in Grimes in August?

An average high-temperature, in August, in Grimes, is 95.7°F (35.4°C) and the average low-temperature is 61.5°F (16.4°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in June is computed to be 91.4°F (33°C).

What is the average humidity in August in Grimes?

In Grimes, California, the average relative humidity in August is 39%.

What is the driest month in Grimes?

The months with the least rainfall in Grimes are July and August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.

How much does it rain in Grimes in August?

In Grimes, California, during August, the rain falls for 1.3 days and regularly aggregates up to 0.04" (1mm) of precipitation.

How many hours of daylight does Grimes have in August?

The average day length in August in Grimes is 13h and 38min.

When is the sunrise / sunset in August in Grimes?

In August, on the first day of the month, sunrise is at 6:08 am and sunset at 8:18 pm. On the last day of the month, in Grimes, California, sunrise is at 6:36 am and sunset at 7:39 pm PDT.

How long on average sun shines in August in Grimes?

In Grimes, the average sunshine duration in August is 11.9h.

How high is the UV index in August in Grimes?

In Grimes, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Grimes, CA

Average temperature in August - Grimes, CA
  • Average high temperature in August: 95.7°F

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).

  • Average low temperature in August: 61.5°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 in August
Grimes, CA

Average pressure in August - Grimes, CA
  • Average pressure in August: 29.91"Hg

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 in August
Grimes, CA

Average wind speed in August - Grimes, CA
  • Average wind speed in August: 4.8mph

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 in August
Grimes, CA

Average humidity in August - Grimes, CA
  • Average humidity in August: 39%

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 in August
Grimes, CA

Average rainfall in August - Grimes, CA
  • Average rainfall in August: 0.04"

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 in August
Grimes, CA

Average rainfall days in August - Grimes, CA
  • Average rainfall days in August: 1.3 days

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 in August /
Average sunshine in August
Grimes, CA

Average daylight in August / Average sunshine in August - Grimes, CA
  • Average daylight in August: 13h and 4min

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).

  • Average sunshine in August: 11h and 5min

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 in August
Grimes, CA

Average sunshine days in August - Grimes, CA
  • Average sunshine days in August: 29.4 days

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 in August
Grimes, CA

Average UV index in August - Grimes, CA
  • Average UV index in August: 6

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 cloud cover in August
Grimes, CA

Average cloud cover in August - Grimes, CA
  • Average cloud cover in August: 5

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in August
Grimes, CA

Average visibility in August - Grimes, CA
  • Average visibility in August: 6mi

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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