August weather forecast
Longview, WA

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Weather in August

Following July, August continues the trend of high temperatures, although slightly milder. Longview remains bathed in sunshine, offering excellent visibility and long daylight hours. Rainfall is relatively scarce, similar to the conditions of July, contributing to an overall drier atmosphere. However, the ocean breeze might offer a relieving cool-down from the otherwise hot and dry weather. The latter end of August begins to hint at a transition towards cooler autumn weather, especially during late evenings and early mornings.

Temperature

In Longview, temperatures reach their average annual highs in August, measuring 77.9°F (25.5°C) and a minimum average of 49.8°F (9.9°C).

Humidity

In August, the average relative humidity in Longview is 73%.

Rainfall

August is the month with the least rainfall. Rain falls for 6.3 days and accumulates 0.39" (10mm) of precipitation.

Snowfall

In Longview, snow does not fall in April through October.

Ocean temperature

In August, the average ocean temperature is 53.6°F (12°C).
Note: Navigating the 53.6°F (12°C) at 55.4°F (13°C) is no joy, and temperatures less than 50°F (10°C) can threaten breathing and cause a chilling shock, gauging personal stamina.

Daylight

In August, the average length of the day in Longview is 14h and 5min.
On the first day of August, sunrise is at 5:54 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:51 pm PDT.

Sunshine

The month with the most sunshine is August, with an average of 10.4h of sunshine.

UV index

The average daily maximum UV index in August in Longview is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 4 in August, converts into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What is the hottest time of year in Longview?

August stands out as Longview's warmest month, with temperatures ranging between an average high of 77.9°F (25.5°C) and a low of 49.8°F (9.9°C).

What is the usual temperature for Longview in August?

The high-temperature in Longview during August is 77.9°F (25.5°C) and the low-temperature is 49.8°F (9.9°C).

What is the average humidity in August in Longview?

In Longview, the average relative humidity in August is 73%.

What is the driest month in Longview?

The month with the least rainfall in Longview, Washington, is August, when the rain falls for 6.3 days and typically collects 0.39" (10mm) of precipitation.

How many days does it rain in August in Longview?

In Longview, Washington, during August, the rain falls for 6.3 days and regularly aggregates up to 0.39" (10mm) of precipitation.

When it does not snow in Longview?

April through October are months without snowfall in Longview, Washington.

What is the water temperature in August in Longview?

In Longview, Washington, the average seawater temperature in August is 53.6°F (12°C). Swimming in 53.6°F (12°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

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

In Longview, Washington, the average day length in August is 14h and 5min.

When is the sunrise / sunset in August in Longview?

On the first day of August in Longview, Washington, sunrise is at 5:54 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:51 pm PDT.

What month has the most sunshine in Longview?

With an average of 10.4h of sunshine, August has the most sunshine of the year in Longview, Washington.

How long on average sun shines in August in Longview?

The average sunshine duration in August is 10.4h.

How high is the UV index in August in Longview?

In August, the average daily maximum UV index in Longview, Washington, is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJAugustSOND
Jul
August
Sep
Average high temperature
76.8°F 24.9°C
77.9°F 25.5°C
70.7°F 21.5°C
Average low temperature
48.9°F 9.4°C
49.8°F 9.9°C
47.3°F 8.5°C
Average pressure
30.05" 763mmHg
30.01" 762mmHg
30.01" 762mmHg
Average wind speed
4.3mph 6.9km/h
4mph 6.4km/h
3.9mph 6.3km/h
Average max. wind speed
5mph 8km/h
4.6mph 7.4km/h
4.1mph 6.6km/h
Average wind speed gusts
6.6mph 10.6km/h
6.3mph 10.1km/h
6.3mph 10.1km/h
Average humidity
72%
73%
78%
Average rainfall
0.43" 11mm
0.39" 10mm
1.26" 32mm
Average rainfall days
6.1
6.3
10.8
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
51.5°F 10.8°C
53.6°F 12°C
53.8°F 12.1°C
Average daylight
15h 2min
14h 1min
12h 3min
Average sunshine
10h 1min
10h 2min
8h 2min
Average sunshine days
22
21.3
17
Average UV index
5
4
4
Average cloud cover
38%
36%
44%
Average visibility
4mi 6.4km
5mi 8km
4mi 6.4km

Average temperature in August
Longview, WA

Average temperature in August - Longview, WA
  • Average high temperature in August: 77.9°F

The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is December (42.3°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 (32.7°F).

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Average pressure in August
Longview, WA

Average pressure in August - Longview, WA
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed in August
Longview, WA

Average wind speed in August - Longview, WA
  • Average wind speed in August: 4mph

The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).

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Average humidity in August
Longview, WA

Average humidity in August - Longview, WA
  • Average humidity in August: 73%

The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in August
Longview, WA

Average rainfall in August - Longview, WA
  • Average rainfall in August: 0.39"

The wettest month (with the highest rainfall) is January (3.9").
The driest month (with the least rainfall) is August (0.39").

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Average rainfall days in August
Longview, WA

Average rainfall days in August - Longview, WA
  • Average rainfall days in August: 6.3 days

The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.1 days).

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Average snowfall in August
Longview, WA

Average snowfall in August - Longview, WA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Longview, WA

Average snowfall days in August - Longview, WA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in August
Longview, WA

Average sea temperature in August - Longview, WA
  • Average sea temperature in August: 53.6°F

The best month for swimming (with the highest average sea temperature) is September (53.8°F).
The coldest month (with the lowest average sea temperature) is February (46.6°F).

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Average daylight in August /
Average sunshine in August
Longview, WA

Average daylight in August / Average sunshine in August - Longview, WA
  • Average daylight in August: 14h and 1min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 30min).

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Average sunshine days in August
Longview, WA

Average sunshine days in August - Longview, WA
  • Average sunshine days in August: 21.3 days

The month with the most sunshine days is July (22 days).
The month with the least sunshine days is March (8.9 days).

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Average UV index in August
Longview, WA

Average UV index in August - Longview, WA
  • Average UV index in August: 4

The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).

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Average cloud cover in August
Longview, WA

Average cloud cover in August - Longview, WA
  • Average cloud cover in August: 36

The months with the most cloud cover are February and March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).

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Average visibility in August
Longview, WA

Average visibility in August - Longview, WA
  • Average visibility in August: 5mi

The month with the highest visibility is August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (4mi).

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Longview, Washington, USA

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