Longview weather in August

In August, Longview sees average daytime highs of 77°F and overnight lows near 54°F, with 0.8 in of rain across 3.9 wet days and about 14 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 78°F in the first days to 75°F by the end. The sky is clear or mostly clear about 49% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 42 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Longview's 2nd-clearest and 11th-windiest month. For the whole year in context, see Longview's year-round climate.

Daytime high
77°
1st warmest
Overnight low
54°
12th coldest
Rainfall
0.8 in
3.9 wet days
Daylight
14 hours
5:16 AM – 7:15 PM
Cloud cover
44%
2nd clearest
Wind
4 mph
11th windiest
Solar energy
5.6 kWh/m²
Travel score
8.1
out of 10

Longview is city in Cowlitz County, Washington, United States.

Density
963/km²
people per km²
Founded
1850

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 78°F in the first days to 75°F by the end.

A typical August day in Longview reaches about 77°F in the afternoon and slips back to 54°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 67°F and 88°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17854
27854
37854
47854
57854
67854
77854
87854
97754
107754
117754
127754
137754
147754
157754
167754
177754
187754
197654
207654
217653
227653
237653
247653
257653
267553
277553
287553
297553
307553
317552

How August really feels in Longview

Once humidity and wind are folded in, August averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Longview weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan46° / 36°7.418.12.68.81.0
Feb49° / 36°5.514.92.1101.7
Mar53° / 38°6.518.21.411.62.4
Apr58° / 41°5.116.40.113.33.5
May64° / 46°3.311.4014.75.5
Jun69° / 50°2.08.5015.56.5
Jul76° / 53°0.63015.28.2
Aug77° / 54°0.83.90148.1
Sep71° / 50°2.26.7012.37.2
Oct60° / 44°5.013010.74.5
Nov50° / 38°8.218.20.89.21.8
Dec45° / 35°8.018.12.78.50.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 16% of August, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27228
37228
47030
56931
66832
76733
86634
96535
106535
116535
126535
136436
146436
156436
166436
176436
186337
196337
206337
216238
226139
236139
246139
256040
266040
276040
286040
296040
305941
316040

Chance of precipitation in August

Any precipitation

Longview gets around 0.8 in of rain over 3.9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 12% and peaks near 17% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
18
28
39
49
59
69
710
810
910
1010
1110
1210
1311
1411
1511
1611
1712
1812
1913
2013
2114
2214
2315
2415
2516
2616
2716
2817
2917
3017
3117

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 68% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
170273
271272
370282
469292
569292
668302
767312
866322
965332
1065332
1164342
1264342
1365341
1466331
1566331
1666331
1767321
1868311
1968311
2069301
2169301
2270291
2370291
2470291
2571281
2671281
2771281
2871281
2971281
3071281
3172271

Wind in August

Winds average 4 mph in August.

Across August, daily wind ranges from about 4 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 42 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over August. Sunrise moves from 4:58 AM to 5:36 AM, and sunset from 7:38 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.74:587:38
214.64:597:37
314.65:007:35
414.55:017:34
514.55:027:33
614.55:047:31
714.45:057:30
814.45:067:28
914.35:077:27
1014.35:097:25
1114.25:107:24
1214.25:117:22
1314.15:137:20
1414.15:147:19
1514.05:157:17
1614.05:167:15
1713.95:187:14
1813.95:197:12
1913.85:207:10
2013.85:217:08
2113.75:237:07
2213.75:247:05
2313.65:257:03
2413.65:277:01
2513.55:286:59
2613.55:296:57
2713.45:316:56
2813.45:326:54
2913.35:336:52
3013.35:346:50
3113.25:366:48

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.6 kWh/m².

For context, solar energy here swings from a low near 0.95 kWh/m² to a high of 6.37 kWh/m² in July across the year — August's 5.6 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.2Intense
46.2Intense
56.1Intense
66.1Intense
76.0Intense
86.0Intense
96.0Bright
105.9Bright
115.9Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.7Bright
175.6Bright
185.5Bright
195.5Bright
205.5Bright
215.4Bright
225.3Bright
235.3Bright
245.3Bright
255.2Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
314.9Bright
Planning a trip in August

Hazard calendar for Longview

In seasonPeak

None of Longview's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Longview's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Longview?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.1
Sightseeing
2nd-best month of the year
7.2
Beach & pool
1st-best month of the year

August is one of the better times to visit Longview for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Longview in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Longview sees daytime highs around 77°F and nights near 54°F. Worth packing: light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in Longview in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Longview peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highVery highHighModerateLowJul 17UV 8Dec 15UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May8Very high
Jun6High
Jul8Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Longview in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Longview is worst in September — around 20 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1519 µg/m³Dec 237 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar11Good
Apr11Good
May10Good
Jun10Good
Jul9Good
Aug15Moderate
Sep20Moderate
Oct13Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Longview?

Longview sits at 46.1°N, 122.9°W, 20 ft above sea level, in United States. The nearest listed city is Battle Ground, 32 mi away.

Topography around Longview

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Longview.

Within 2 miles, the terrain around Longview has only modest variations in elevation — a maximum elevation change of 486 ft around an average of 52 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,946 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,212 ft.

The land around Longview is covered by trees (40%) and artificial surfaces (34%) within 2 miles, trees (77%) within 10 miles, and trees (83%) within 50 miles.

2 miles
486 ft
10 miles
1,946 ft
50 miles
8,212 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Battle Ground 32 mi · Salmon Creek 33 mi · Hazel Dell 35 mi · Five Corners 36 mi · Vancouver 37 mi · Orchards 37 mi · Centralia 40 mi · Bethany 40 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Longview (46.1382°, -122.9382°, elevation 20 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).