August weather forecast
Altamont, OR

Share

Weather in August

August, the last month of the summer in Altamont, is another warm month, with an average temperature fluctuating between 48.4°F (9.1°C) and 80.8°F (27.1°C).

Temperature

Altamont experiences a transition to a still moderately hot 80.8°F (27.1°C) in average high-temperatures with the arrival of August, not greatly differing from July's 82°F (27.8°C). Altamont's average nighttime temperature descends significantly from the day's peak in August, settling at a frosty 48.4°F (9.1°C).

Heat index

Throughout August, the heat index is calculated to be 80.6°F (27°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.
Know that the heat index computations account for shaded terrains and slight winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

The least humid month is August, with an average relative humidity of 49%.

Rainfall

In Altamont, in August, it is raining for 3.6 days, with typically 0.28" (7mm) of accumulated precipitation. In Altamont, during the entire year, the rain falls for 100.4 days and collects up to 13.15" (334mm) of precipitation.

Snowfall

July and August are months without snowfall.

Daylight

The average length of the day in August is 13h and 50min.
On the first day of the month, sunrise is at 6:00 am and sunset at 8:25 pm. On the last day of August, sunrise is at 6:32 am and sunset at 7:41 pm PDT.

Sunshine

The average sunshine in August is 11.9h.

UV index

The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 5 suggests this advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures?

The average high-temperature and low-temperature during August are 80.8°F (27.1°C) and 48.4°F (9.1°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 80.6°F (27°C).

What is the least humid month?

August is the least humid month, with an average relative humidity of 49%.

What is the average humidity in August?

In August, the average relative humidity in Altamont is 49%.

How much does it rain in August?

In Altamont, Oregon, in August, during 3.6 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

When it does not snow in Altamont?

July and August are months without snowfall.

Does it snow in August?

In Altamont, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August?

In Altamont, the average day length in August is 13h and 50min.

When are sunrise and sunset in August in Altamont?

On the first day of August, sunrise is at 6:00 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:41 pm PDT.

How many hours of sunshine does Altamont have in August?

In August, the average sunshine duration is 11.9h.

What is the UV index reading in August?

In Altamont, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
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
Altamont, OR

Average temperature in August - Altamont, OR
  • Average high temperature in August: 80.8°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (36.9°F).

  • Average low temperature in August: 48.4°F

The month with the highest average low temperature is July (48.6°F).
The coldest month (with the lowest average low temperature) is December (25.2°F).

Average pressure in August
Altamont, OR

Average pressure in August - Altamont, OR
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).

Average wind speed in August
Altamont, OR

Average wind speed in August - Altamont, OR
  • Average wind speed in August: 5mph

The windiest months (with the highest average wind speed) are March and April (6.3mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).

Average humidity in August
Altamont, OR

Average humidity in August - Altamont, OR
  • Average humidity in August: 49%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (49%).

Average rainfall in August
Altamont, OR

Average rainfall in August - Altamont, OR
  • Average rainfall in August: 0.28"

The wettest month (with the highest rainfall) is December (2.09").
The driest month (with the least rainfall) is July (0.2").

Average rainfall days in August
Altamont, OR

Average rainfall days in August - Altamont, OR
  • Average rainfall days in August: 3.6 days

The month with the highest number of rainy days is April (13.1 days).
The month with the least rainy days is August (3.6 days).

Average snowfall in August
Altamont, OR

Average snowfall in August - Altamont, OR
  • Average snowfall in August: 0"

The month with the highest snowfall is December (10.63").
The months with the least snowfall are July and August (0").

Average snowfall days in August
Altamont, OR

Average snowfall days in August - Altamont, OR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in August /
Average sunshine in August
Altamont, OR

Average daylight in August / Average sunshine in August - Altamont, OR
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

Average sunshine days in August
Altamont, OR

Average sunshine days in August - Altamont, OR
  • Average sunshine days in August: 24.9 days

The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is March (10.6 days).

Average UV index in August
Altamont, OR

Average UV index in August - Altamont, OR
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in August
Altamont, OR

Average cloud cover in August - Altamont, OR
  • Average cloud cover in August: 9

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 8).

Average visibility in August
Altamont, OR

Average visibility in August - Altamont, OR
  • Average visibility in August: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Altamont, Oregon, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location