August weather forecast
Santa Rosa, AZ

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Weather in August

August, the last month of the summer in Santa Rosa, is also a sweltering month, with an average temperature ranging between max 95.5°F (35.3°C) and min 78.4°F (25.8°C).

Temperature

The initiation of August sees an average high-temperature of a still sweltering 95.5°F (35.3°C), showing minor variations from the previous month. In Santa Rosa, August's nights observe an average temperature dip to a warm 78.4°F (25.8°C).

Humidity

The average relative humidity in August is 39%.

Rainfall

August is the month with the most rainfall. Rain falls for 11 days and accumulates 1.38" (35mm) of precipitation.

Daylight

The average length of the day in August is 13h and 18min.
On the first day of August, sunrise is at 5:43 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 6:53 pm MST.

Sunshine

The average sunshine in August is 11.8h.

UV index

July and August, with an average maximum UV index of 8, are months with the highest UV index. A UV Index of 8 to 10 symbolizes a very high health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 8 in August translates into the following recommendations:
Refrain from exposing skin and eyes. Without protection, they can get damaged rapidly. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in August?

The high-temperature, in August, in Santa Rosa, records 95.5°F (35.3°C), while the low-temperature is 78.4°F (25.8°C).

What is the average humidity in August?

In Santa Rosa, the average relative humidity in August is 39%.

What is the wettest month?

The month with the most rainfall is August, when the rain falls for 11 days and typically aggregates up to 1.38" (35mm) of precipitation.

How much does it rain in Santa Rosa in August?

In Santa Rosa, in August, it is raining for 11 days, with typically 1.38" (35mm) of accumulated precipitation.

What is the average length of the day in August?

In Santa Rosa, the average day length in August is 13h and 18min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:43 am and sunset at 7:25 pm. On the last day of the month, in Santa Rosa, sunrise is at 6:03 am and sunset at 6:53 pm MST.

How long on average sun shines in August?

In August, the average sunshine duration in Santa Rosa is 11.8h.

When is the highest UV index?

The months with the highest UV index are July and August, with an average maximum UV index of 8.

What is the UV index reading in August?

In August, the average daily maximum UV index in Santa Rosa is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Santa Rosa, AZ

Average temperature in August - Santa Rosa, AZ
  • Average high temperature in August: 95.5°F

The warmest month (with the highest average high temperature) is June (97.3°F).
The month with the lowest average high temperature is December (62.4°F).

  • Average low temperature in August: 78.4°F

The month with the highest average low temperature is July (78.6°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).

Average pressure in August
Santa Rosa, AZ

Average pressure in August - Santa Rosa, AZ
  • Average pressure in August: 29.83"Hg

The month with the highest atmospheric pressure is January (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.78"Hg).

Average wind speed in August
Santa Rosa, AZ

Average wind speed in August - Santa Rosa, AZ
  • Average wind speed in August: 6.4mph

The windiest month (with the highest average wind speed) is May (9.3mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).

Average humidity in August
Santa Rosa, AZ

Average humidity in August - Santa Rosa, AZ
  • Average humidity in August: 39%

The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (20%).

Average rainfall in August
Santa Rosa, AZ

Average rainfall in August - Santa Rosa, AZ
  • Average rainfall in August: 1.38"

The wettest month (with the highest rainfall) is August (1.38").
The driest month (with the least rainfall) is May (0.04").

Average rainfall days in August
Santa Rosa, AZ

Average rainfall days in August - Santa Rosa, AZ
  • Average rainfall days in August: 11 days

The month with the highest number of rainy days is July (11.5 days).
The month with the least rainy days is May (1 days).

Average daylight in August /
Average sunshine in August
Santa Rosa, AZ

Average daylight in August / Average sunshine in August - Santa Rosa, AZ
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

Average sunshine days in August
Santa Rosa, AZ

Average sunshine days in August - Santa Rosa, AZ
  • Average sunshine days in August: 17.2 days

The month with the most sunshine days is May (29.8 days).
The month with the least sunshine days is August (17.2 days).

Average UV index in August
Santa Rosa, AZ

Average UV index in August - Santa Rosa, AZ
  • Average UV index in August: 8

The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in August
Santa Rosa, AZ

Average cloud cover in August - Santa Rosa, AZ
  • Average cloud cover in August: 15

The month with the most cloud cover is December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 6).

Average visibility in August
Santa Rosa, AZ

Average visibility in August - Santa Rosa, AZ
  • 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).

Santa Rosa, Arizona, USA

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