Corvallis weather in August

In August, Corvallis sees average daytime highs of 82°F and overnight lows near 55°F, with 0.4 in of rain across 2.2 wet days and about 13.9 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 83°F in the first days to 80°F by the end. The sky is clear or mostly clear about 68% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Corvallis's 1st-clearest and 10th-windiest month. For the whole year in context, see Corvallis's year-round climate.

Daytime high
82°
1st warmest
Overnight low
55°
12th coldest
Rainfall
0.4 in
2.2 wet days
Daylight
13 h 54 min
5:21 AM – 7:13 PM
Cloud cover
29%
1st clearest
Wind
4 mph
10th windiest
Solar energy
6.34 kWh/m²
Travel score
7.8
out of 10

Corvallis is city in and county seat of Benton County, Oregon, United States.

Density
1,506/km²
people per km²
Founded
1845

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 83°F in the first days to 80°F by the end.

A typical August day in Corvallis reaches about 82°F in the afternoon and slips back to 55°F overnight — a 27°F spread between the day's warmth and the night's chill. On most days the high lands between 72°F and 92°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)
18355
28355
38355
48355
58355
68355
78355
88355
98355
108355
118355
128355
138355
148255
158255
168255
178255
188255
198255
208255
218255
228154
238154
248154
258154
268154
278054
288054
298054
308053
318053

How August really feels in Corvallis

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.

Corvallis 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
Jan47° / 36°6.916.91.791.3
Feb50° / 36°5.314.71.410.12.0
Mar55° / 38°6.016.80.911.62.8
Apr59° / 41°4.415.20.113.23.9
May66° / 46°2.810.3014.65.9
Jun72° / 50°1.46.3015.37.3
Jul81° / 55°0.31.80158.0
Aug82° / 55°0.42.2013.97.8
Sep76° / 51°1.44.6012.38.0
Oct64° / 44°3.810.7010.75.6
Nov52° / 39°6.816.50.29.42.3
Dec46° / 35°8.117.21.38.71.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 68% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 20%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18515
28515
38515
48416
58416
68317
78317
88317
98119
108119
118119
128020
138020
148020
158020
168020
177921
187921
197921
207921
217921
227921
237921
247921
257822
267822
277921
287921
297822
307822
317723

Chance of precipitation in August

Any precipitation

Corvallis gets around 0.4 in of rain over 2.2 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 7% and peaks near 10% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
13
23
33
43
53
64
74
84
94
105
115
125
136
146
157
167
177
188
198
208
219
229
239
249
2510
2610
2710
2810
2910
3010
3110

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 84% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
186140
286140
387130
486140
586140
686140
786140
885150
985150
1085150
1184160
1284160
1383161
1483161
1583161
1683161
1783161
1883161
1983161
2083161
2183161
2283161
2383161
2483161
2583161
2684151
2784151
2885141
2986140
3086140
3186140

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
24calm
34calm
44calm
54calm
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 30 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over August. Sunrise moves from 5:03 AM to 5:39 AM, and sunset from 7:35 PM to 6:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.55:037:35
214.55:057:34
314.45:067:32
414.45:077:31
514.45:087:30
614.35:097:28
714.35:107:27
814.25:117:26
914.25:137:24
1014.15:147:23
1114.15:157:21
1214.15:167:20
1314.05:177:18
1414.05:197:17
1513.95:207:15
1613.95:217:13
1713.85:227:12
1813.85:237:10
1913.75:247:08
2013.75:267:07
2113.65:277:05
2213.65:287:03
2313.55:297:02
2413.55:307:00
2513.45:326:58
2613.45:336:56
2713.35:346:55
2813.35:356:53
2913.25:376:51
3013.25:386:49
3113.15:396:47

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.34 kWh/m².

For context, solar energy here swings from a low near 1.12 kWh/m² to a high of 7.2 kWh/m² in July across the year — August's 6.34 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.0Intense
27.0Intense
37.0Intense
46.9Intense
56.9Intense
66.8Intense
76.8Intense
86.8Intense
96.7Intense
106.7Intense
116.6Intense
126.6Intense
136.5Intense
146.5Intense
156.5Intense
166.4Intense
176.3Intense
186.3Intense
196.2Intense
206.2Intense
216.1Intense
226.1Intense
236.0Intense
246.0Bright
255.9Bright
265.9Bright
275.8Bright
285.8Bright
295.7Bright
305.6Bright
315.6Bright
Planning a trip in August

Hazard calendar for Corvallis

In seasonPeak

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

Corvallis'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 Corvallis?

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

7.8
Sightseeing
3rd-best month of the year
8.5
Beach & pool
1st-best month of the year

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

What to pack for Corvallis in August

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

In August, Corvallis sees daytime highs around 82°F and nights near 55°F. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Corvallis in August

The nearest coast averages about 56°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 43 mi away) is warmest in July at about 56°F and coldest in February near 50°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

48°50°52°54°56°58°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°F)Comfort
Jan50Bracing
Feb50Bracing
Mar50Bracing
Apr51Bracing
May54Bracing
Jun56Bracing
Jul56Bracing
Aug56Bracing
Sep56Bracing
Oct55Bracing
Nov53Bracing
Dec51Bracing

UV index in Corvallis 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 Corvallis peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 8Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May8Very high
Jun7Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct4Moderate
Nov1Low
Dec1Low

Air quality in Corvallis 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 Corvallis is worst in September — around 40 µg/m³ PM2.5 (poor), about 7.1× the cleanest month (January, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1537 µg/m³Jan 186 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar10Good
Apr11Good
May11Good
Jun8Good
Jul8Good
Aug16Moderate
Sep40Poor
Oct11Good
Nov11Good
Dec9Good
Location & terrain

Where is Corvallis?

Corvallis sits at 44.6°N, 123.3°W, 233 ft above sea level, in United States. The nearest listed city is Albany, 9.3 mi away.

Topography around Corvallis

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

Within 2 miles, the terrain around Corvallis has only modest variations in elevation — a maximum elevation change of 262 ft around an average of 233 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,014 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,997 ft.

The land around Corvallis is covered by trees (42%) and artificial surfaces (26%) within 2 miles, trees (47%) and cropland (31%) within 10 miles, and trees (70%) within 50 miles.

2 miles
262 ft
10 miles
2,014 ft
50 miles
4,997 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Albany 9.3 mi · Lebanon 17 mi · Dallas 25 mi · Salem 29 mi · Four Corners 29 mi · Keizer 32 mi · Hayesville 32 mi · Eugene 37 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 Corvallis (44.5646°, -123.262°, elevation 233 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).