August weather forecast
Twin Falls, ID

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The high water of the Shoshone Falls in Twin Falls, Idaho, falling over the high rock cliffs and flowing into a river below
The high water of the Shoshone Falls in Twin Falls, Idaho, falling over the high rock cliffs and flowing into a river below

Weather in August

In August, Twin Falls experiences a subtly milder version of July's sweltering weather. Compared to July, the temperature takes a slight dip, but August remains significantly hot with an 88°F (31.1°C) high. The scorching summer weather continues, but relief is in sight as the month concludes. The cicadas' chorus fills the air during the warm evenings, and locals start preparing for the impending arrival of the cooler autumn weather. Twin Falls, in all its sunny glory, presents a lively, bustling picture in August.

Temperature

August's arrival shows an average high-temperature of a still hot 88°F (31.1°C), hardly different from the previous month. Despite a noticeable differential from daytime highs, Twin Falls notes an average nighttime low-temperature of 61.9°F (16.6°C) in August.

Humidity

In August, the average relative humidity is 29%.

Rainfall

The months with the least rainfall are July and August Rain falls for 4.4 days and accumulates 0.24" (6mm) of rain.

Snowfall

In Twin Falls, snow does not fall in May through September.

Daylight

In Twin Falls, the average length of the day in August is 13h and 51min.
On the first day of the month, sunrise is at 6:30 am and sunset at 8:57 pm. On the last day of August, sunrise is at 7:02 am and sunset at 8:13 pm MDT.

Sunshine

In August, the average sunshine is 11.6h.

UV index

The average daily maximum UV index in August in Twin Falls is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Jun 19, 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 Twin Falls, records 88°F (31.1°C), while the low-temperature is 61.9°F (16.6°C).

What is the average humidity in August?

The average relative humidity in August is 29%.

What is the driest month in Twin Falls?

The months with the least rainfall are July and August Rain falls for 4.4 days and accumulates 0.24" (6mm) of rain.

How much does it rain in August?

In August, the rain falls for 4.4 days. Throughout August, 0.24" (6mm) of precipitation is accumulated.

When it does not snow?

In Twin Falls, Idaho, snow does not fall in May through September.

How many hours of daylight does Twin Falls have in August?

In Twin Falls, the average day length in August is 13h and 51min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:30 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 8:13 pm MDT.

How long on average sun shines in August?

In August, the average sunshine duration is 11.6h.

What is the UV index reading in August in Twin Falls?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Twin Falls, ID

Average temperature in August - Twin Falls, ID
  • Average high temperature in August: 88°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (34°F).

  • Average low temperature in August: 61.9°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 (23°F).

Average pressure in August
Twin Falls, ID

Average pressure in August - Twin Falls, ID
  • Average pressure in August: 29.88"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in August
Twin Falls, ID

Average wind speed in August - Twin Falls, ID
  • Average wind speed in August: 7.3mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).

Average humidity in August
Twin Falls, ID

Average humidity in August - Twin Falls, ID
  • Average humidity in August: 29%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is July (28%).

Average rainfall in August
Twin Falls, ID

Average rainfall in August - Twin Falls, ID
  • Average rainfall in August: 0.24"

The wettest month (with the highest rainfall) is December (1.3").
The driest months (with the least rainfall) are July and August (0.24").

Average rainfall days in August
Twin Falls, ID

Average rainfall days in August - Twin Falls, ID
  • Average rainfall days in August: 4.4 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (4.4 days).

Average snowfall in August
Twin Falls, ID

Average snowfall in August - Twin Falls, ID
  • Average snowfall in August: 0"

The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Twin Falls, ID

Average snowfall days in August - Twin Falls, ID
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Twin Falls, ID

Average daylight in August / Average sunshine in August - Twin Falls, ID
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 11h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in August
Twin Falls, ID

Average sunshine days in August - Twin Falls, ID
  • Average sunshine days in August: 23.3 days

The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is March (14.7 days).

Average UV index in August
Twin Falls, ID

Average UV index in August - Twin Falls, ID
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Twin Falls, ID

Average cloud cover in August - Twin Falls, ID
  • Average cloud cover in August: 10

The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 10).

Average visibility in August
Twin Falls, ID

Average visibility in August - Twin Falls, ID
  • 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).

Twin Falls, Idaho, USA

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