August weather forecast
Foster, OR

Weather in August

August, the last month of the summer, in Foster, is also a moderately hot month, with average temperature fluctuating between 79.5°F (26.4°C) and 49.8°F (9.9°C).

Temperature

August is the warmest month, with an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 49.8°F (9.9°C).

Humidity

The least humid month in Foster is August, with an average relative humidity of 66%.

Rainfall

In August, in Foster, the rain falls for 4.2 days. Throughout August, 0.31" (8mm) of precipitation is accumulated. Throughout the year, there are 167.6 rainfall days, and 36.54" (928mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August is 14h.

Sunshine

The month with the most sunshine is August, with an average of 11.3h of sunshine.

UV index

In August, the average daily maximum UV index in Foster is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the warmest month in Foster?

With an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 49.8°F (9.9°C), August is the warmest month in Foster.

What is the least humid month in Foster?

The least humid month in Foster is August, with an average relative humidity of 66%.

What is the average humidity in August in Foster?

The average relative humidity in August in Foster, Oregon, is 66%.

How much does it rain in Foster in August?

In August, in Foster, Oregon, the rain falls for 4.2 days. Throughout August, 0.31" (8mm) of precipitation is accumulated.

When it does not snow in Foster?

May through October are months without snowfall in Foster.

What is the average length of the day in August in Foster?

In Foster, the average length of the day in August is 14h.

What month has the most sunshine in Foster?

With an average of 11.3h of sunshine, August has the most sunshine of the year in Foster.

How many hours of sunshine does Foster have in August?

The average sunshine in August is 11.3h.

What is the UV index intensity in August in Foster?

The average daily maximum UV index in August in Foster is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in August
Foster, OR

Average temperature in August - Foster, OR
  • Average high temperature in August: 79.5°F

The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is December (44.4°F).

  • Average low temperature in August: 49.8°F

The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).

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Average pressure in August
Foster, OR

Average pressure in August - Foster, OR
  • Average pressure in August: 30"

The month with the highest atmospheric pressure is January (30.12").
The month with the lowest atmospheric pressure is August (30").

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Average wind speed in August
Foster, OR

Average wind speed in August - Foster, OR
  • Average wind speed in August: 3.7mph

The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in August
Foster, OR

Average humidity in August - Foster, OR
  • Average humidity in August: 66%

Months with the highest relative humidity are February, March and December (86%).
The month with the lowest relative humidity is August (66%).

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Average rainfall in August
Foster, OR

Average rainfall in August - Foster, OR
  • Average rainfall in August: 0.31"

The wettest month (with the highest rainfall) is December (5.47").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in August
Foster, OR

Average rainfall days in August - Foster, OR
  • Average rainfall days in August: 4.2 days

The month with the highest number of rainy days is March (21.1 days).
The month with the least rainy days is July (4.1 days).

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Average snowfall in August
Foster, OR

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

The month with the highest snowfall is February (3.7").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Foster, OR

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

The month with the highest number of snowfall days is February (3.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Foster, OR
  • Average daylight in August: 14h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in August: 11.3h

The month with the most sunshine is August (Average sunshine: 11.3h).
The month with the least sunshine is February (Average sunshine: 4.1h).

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Average sunshine days in August
Foster, OR

Average sunshine days in August - Foster, OR
  • Average sunshine days in August: 24.8 days

The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (8.4 days).

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Average UV index in August
Foster, OR

Average UV index in August - Foster, 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 November (UV index 1).

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Average cloud cover in August
Foster, OR

Average cloud cover in August - Foster, OR
  • Average cloud cover in August: 19

Months with the most cloud cover are February and March (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 19).

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Average visibility in August
Foster, OR

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

The month with the highest visibility is August (6mi).
Months with the lowest visibility are February and April (4mi).

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