August weather forecast
Imperial, CA

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Weather in August

August, the last month of the summer in Imperial, is another extremely hot month, with an average temperature fluctuating between 85.5°F (29.7°C) and 106.2°F (41.2°C).

Temperature

Imperial's weather, upon August's arrival, documents an average high-temperature of a still blisteringly hot 106.2°F (41.2°C), nearly identical to the prior month. Imperial experiences a consistent average temperature of 85.5°F (29.7°C) throughout the nights in August.

Humidity

In August, the average relative humidity is 25%.

Rainfall

The months with the most rainfall are March, April, July through September and December, with an average 0.08" (2mm) of precipitation.

Daylight

In August, the average length of the day is 13h and 19min.
On the first day of August, sunrise is at 5:56 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:07 pm PDT.

Sunshine

In Imperial, the average sunshine in August is 12.1h.

UV index

July and August, with an average maximum UV index of 9, are months with the highest UV index. A UV Index of 8 to 10 symbolizes a very high health risk from unsafe exposure to UV radiation for the average person.
Note: In August, a daily maximum UV index of 9 leads to the following instructions:
Ensure safety measures are in place, as skin and eyes are vulnerable to quick damage. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Even when the sky is cloudy, apply generously and frequently reapply a sunscreen with SPF 30 or more, especially post every swim or outdoor exercise.
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

In Imperial, in August, the average high-temperature is 106.2°F (41.2°C), and the average low-temperature is 85.5°F (29.7°C).

What is the average humidity in August?

In August, the average relative humidity is 25%.

What is the wettest month in Imperial?

The wettest months are March, April, July through September and December, with an average 0.08" (2mm) of rainfall.

How much does it rain in August?

In Imperial, in August, during 1.5 rainfall days, 0.08" (2mm) of precipitation is typically accumulated.

What is the average length of the day in August?

The average day length in August is 13h and 19min.

When are sunrise and sunset in August in Imperial?

In August, on the first day of the month, sunrise is at 5:56 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:07 pm PDT.

How long on average sun shines in August?

In Imperial, the average sunshine duration in August is 12.1h.

When is the highest UV index?

July and August, with an average maximum UV index of 9, are months with the highest UV index.

What is the UV index reading in August?

In Imperial, the average daily maximum UV index in August is 9. A UV Index reading of 8 to 10 represents a very high health risk 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
Imperial, CA

Average temperature in August - Imperial, CA
  • Average high temperature in August: 106.2°F

The warmest month (with the highest average high temperature) is July (106.7°F).
The month with the lowest average high temperature is December (66.4°F).

  • Average low temperature in August: 85.5°F

The month with the highest average low temperature is August (85.5°F).
The coldest month (with the lowest average low temperature) is January (49.8°F).

Average pressure in August
Imperial, CA

Average pressure in August - Imperial, CA
  • Average pressure in August: 29.8"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.78"Hg).

Average wind speed in August
Imperial, CA

Average wind speed in August - Imperial, CA
  • Average wind speed in August: 5.4mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).

Average humidity in August
Imperial, CA

Average humidity in August - Imperial, CA
  • Average humidity in August: 25%

The month with the highest relative humidity is December (40%).
The month with the lowest relative humidity is June (21%).

Average rainfall in August
Imperial, CA

Average rainfall in August - Imperial, CA
  • Average rainfall in August: 0.08"

The wettest months (with the highest rainfall) are March, April, July, August, September and December (0.08").
The driest months (with the least rainfall) are May and June (0").

Average rainfall days in August
Imperial, CA

Average rainfall days in August - Imperial, CA
  • Average rainfall days in August: 1.5 days

The month with the highest number of rainy days is July (2.8 days).
The month with the least rainy days is May (0.3 days).

Average daylight in August /
Average sunshine in August
Imperial, CA

Average daylight in August / Average sunshine in August - Imperial, CA
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in August: 12h and 1min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).

Average sunshine days in August
Imperial, CA

Average sunshine days in August - Imperial, CA
  • Average sunshine days in August: 25.8 days

The month with the most sunshine days is May (30.4 days).
The month with the least sunshine days is August (25.8 days).

Average UV index in August
Imperial, CA

Average UV index in August - Imperial, CA
  • Average UV index in August: 9

The months with the highest UV index are July and August (UV index 9).
The month with the lowest UV index is December (UV index 4).

Average cloud cover in August
Imperial, CA

Average cloud cover in August - Imperial, CA
  • Average cloud cover in August: 6

The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 4).

Average visibility in August
Imperial, CA

Average visibility in August - Imperial, 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).

Imperial, California, USA

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