Oregon City weather in August

In August, Oregon City sees average daytime highs of 80°F and overnight lows near 55°F, with 0.7 in of rain across 2.9 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 81°F in the first days to 78°F by the end. The sky is clear or mostly clear about 63% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 36 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Oregon City's 1st-clearest and 12th-windiest month. For the whole year in context, see Oregon City's year-round climate.

Daytime high
80°
1st warmest
Overnight low
55°
12th coldest
Rainfall
0.7 in
2.9 wet days
Daylight
13 h 54 min
5:17 AM – 7:12 PM
Cloud cover
33%
1st clearest
Wind
4 mph
12th windiest
Solar energy
6.19 kWh/m²
Travel score
8.2
out of 10

Oregon City is city and county seat of Clackamas, Oregon, United States.

Density
1,489/km²
people per km²
Founded
1829

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 81°F in the first days to 78°F by the end.

A typical August day in Oregon City reaches about 80°F in the afternoon and slips back to 55°F overnight — a 25°F spread between the day's warmth and the night's chill. On most days the high lands between 69°F and 91°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)
18155
28155
38155
48155
58155
68155
78155
88155
98155
108155
118155
128055
138055
148055
158055
168055
178055
188055
198055
207954
217954
227954
237954
247954
257854
267854
277853
287853
297853
307753
317753

How August really feels in Oregon City

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.

Oregon City 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° / 35°7.817.75.88.91.0
Feb49° / 35°6.115.65.410.11.7
Mar53° / 37°6.618.55.611.62.4
Apr58° / 40°5.4172.813.23.5
May65° / 46°3.512.30.414.65.5
Jun70° / 50°2.29015.46.7
Jul79° / 54°0.62.9015.18.2
Aug80° / 55°0.72.9013.98.2
Sep73° / 50°2.06.4012.37.6
Oct62° / 44°5.012.40.110.74.9
Nov51° / 38°8.017.939.31.9
Dec45° / 35°8.918.76.78.60.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of August, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38119
48020
58020
68020
78020
87921
97921
107822
117723
127723
137723
147723
157624
167624
177624
187624
197624
207525
217525
227525
237525
247426
257426
267426
277327
287327
297228
307129
317129

Chance of precipitation in August

Any precipitation

Oregon City gets around 0.7 in of rain over 2.9 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 9% and peaks near 15% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
16
26
36
46
56
66
77
87
97
107
117
127
137
148
158
168
179
189
199
2010
2110
2211
2312
2412
2513
2613
2714
2814
2914
3014
3115

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 82% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
181181
281181
381181
481181
581181
681181
781181
880191
980191
1080191
1180191
1280191
1380191
1480191
1580191
1680191
1781181
1881181
1981181
2081181
2182171
2282171
2382171
2483161
2583161
2684151
2785150
2886140
2987130
3087130
3188120

Wind in August

Winds average 4 mph in August, the calmest month.

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

0246810151015202531
Wind speed (mph)Feels
14calm
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 36 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 84 minutes over August. Sunrise moves from 4:59 AM to 5:35 AM, and sunset from 7:34 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:597:34
214.65:007:33
314.55:017:32
414.55:027:30
514.45:037:29
614.45:047:28
714.35:067:26
814.35:077:25
914.35:087:23
1014.25:097:22
1114.25:117:20
1214.15:127:19
1314.15:137:17
1414.05:147:16
1514.05:157:14
1613.95:177:12
1713.95:187:11
1813.85:197:09
1913.85:207:07
2013.75:227:06
2113.75:237:04
2213.65:247:02
2313.65:257:00
2413.55:276:59
2513.55:286:57
2613.45:296:55
2713.45:306:53
2813.35:326:51
2913.35:336:49
3013.25:346:47
3113.25:356:46

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.19 kWh/m².

For context, solar energy here swings from a low near 1.07 kWh/m² to a high of 7.03 kWh/m² in July across the year — August's 6.19 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.9Intense
26.9Intense
36.8Intense
46.8Intense
56.8Intense
66.7Intense
76.7Intense
86.6Intense
96.6Intense
106.5Intense
116.5Intense
126.4Intense
136.4Intense
146.3Intense
156.3Intense
166.2Intense
176.2Intense
186.1Intense
196.1Intense
206.0Intense
216.0Bright
225.9Bright
235.9Bright
245.8Bright
255.8Bright
265.7Bright
275.6Bright
285.6Bright
295.5Bright
305.5Bright
315.4Bright
Planning a trip in August

Hazard calendar for Oregon City

In seasonPeak

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

Oregon City'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 Oregon City?

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

8.2
Sightseeing
1st-best month of the year
8.0
Beach & pool
1st-best month of the year

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

What to pack for Oregon City in August

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

In August, Oregon City sees daytime highs around 80°F and nights near 55°F. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

UV index in Oregon City 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 Oregon City peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 17UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May8Very high
Jun7High
Jul8Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Oregon City 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 Oregon City is worst in September — around 40 µg/m³ PM2.5 (poor), about 7.8× the cleanest month (January, 5 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1537 µg/m³Jan 155 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb7Good
Mar9Good
Apr9Good
May8Good
Jun9Good
Jul8Good
Aug20Moderate
Sep40Poor
Oct10Good
Nov9Good
Dec6Good
Location & terrain

Where is Oregon City?

Oregon City sits at 45.4°N, 122.6°W, 125 ft above sea level, in United States. The nearest listed city is West Linn, 0.6 mi away.

Topography around Oregon City

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

Within 2 miles, the terrain around Oregon City has only modest variations in elevation — a maximum elevation change of 702 ft around an average of 269 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,165 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 11,093 ft.

The land around Oregon City is covered by trees (62%) and artificial surfaces (24%) within 2 miles, trees (63%) within 10 miles, and trees (76%) within 50 miles.

2 miles
702 ft
10 miles
1,165 ft
50 miles
11,093 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: West Linn 0.6 mi · Oak Grove 4.3 mi · Lake Oswego 5.6 mi · Milwaukie 6.2 mi · Happy Valley 7.5 mi · Canby 7.5 mi · Tualatin 8.1 mi · Lents 8.7 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 Oregon City (45.3573°, -122.6068°, elevation 125 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).