Keizer weather in August

In August, Keizer sees average daytime highs of 83°F and overnight lows near 57°F, with 0.4 in of rain across 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 85°F in the first days to 81°F by the end. The sky is clear or mostly clear about 65% 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 Keizer's 1st-clearest and 10th-windiest month. For the whole year in context, see Keizer's year-round climate.

Daytime high
83°
1st warmest
Overnight low
57°
12th coldest
Rainfall
0.4 in
2 wet days
Daylight
13 h 54 min
5:19 AM – 7:13 PM
Cloud cover
31%
1st clearest
Wind
5 mph
10th windiest
Solar energy
6.21 kWh/m²
Travel score
7.2
out of 10

Keizer is city in Oregon, USA.

Density
2,030/km²
people per km²
Founded
1982

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 85°F in the first days to 81°F by the end.

A typical August day in Keizer reaches about 83°F in the afternoon and slips back to 57°F overnight — a 26°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 94°F. Set against its neighbours, August runs on par with July and about 7°F warmer than September.

40°60°80°100°151015202531
Avg high (°F)Avg low (°F)
18558
28558
38558
48558
58558
68558
78558
88558
98558
108558
118458
128458
138458
148458
158457
168457
178457
188357
198357
208357
218357
228357
238356
248256
258256
268256
278256
288256
298156
308156
318156

How August really feels in Keizer

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.

Keizer 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
Jan48° / 37°6.115.90.791.5
Feb52° / 38°4.613.70.810.12.3
Mar56° / 40°5.115.70.411.63.2
Apr61° / 43°3.614.3013.24.3
May68° / 48°2.29014.66.3
Jun74° / 53°1.25.9015.47.4
Jul83° / 57°0.31.9015.17.3
Aug83° / 57°0.42013.97.2
Sep77° / 53°1.24.8012.37.9
Oct64° / 46°3.410.3010.75.7
Nov53° / 41°6.015.90.19.32.6
Dec47° / 37°7.116.80.68.61.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% 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 23%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38218
48119
58119
68119
78020
87921
97921
107921
117921
127921
137822
147822
157723
167723
177723
187723
197723
207723
217624
227624
237624
247525
257525
267426
277426
287327
297426
307327
317228

Chance of precipitation in August

Any precipitation

Keizer gets around 0.4 in of rain over 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 6% and peaks near 10% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
24
34
44
54
64
74
84
94
104
115
125
135
145
156
166
176
186
197
207
217
228
238
248
259
269
279
289
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 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
182180
282180
382180
482180
581190
681190
780200
880200
979210
1079210
1178211
1278211
1378211
1478211
1579201
1679201
1779201
1879201
1979201
2079201
2180191
2280191
2380191
2480191
2580191
2680191
2781181
2881181
2981181
3081181
3181181

Wind in August

Winds average 5 mph in August.

Across August, daily wind ranges from about 5 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
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 5:01 AM to 5:37 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)
114.65:017:35
214.55:027:34
314.55:047:32
414.45:057:31
514.45:067:30
614.45:077:28
714.35:087:27
814.35:097:26
914.25:117:24
1014.25:127:23
1114.15:137:21
1214.15:147:20
1314.05:157:18
1414.05:177:17
1514.05:187:15
1613.95:197:13
1713.95:207:12
1813.85:227:10
1913.85:237:08
2013.75:247:07
2113.75:257:05
2213.65:267:03
2313.65:287:01
2413.55:297:00
2513.55:306:58
2613.45:316:56
2713.45:336:54
2813.35:346:52
2913.35:356:51
3013.25:366:49
3113.25:376:47

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.21 kWh/m².

For context, solar energy here swings from a low near 1.08 kWh/m² to a high of 7.04 kWh/m² in July across the year — August's 6.21 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
126.5Intense
136.4Intense
146.4Intense
156.3Intense
166.3Intense
176.2Intense
186.2Intense
196.1Intense
206.0Intense
216.0Bright
225.9Bright
235.9Bright
245.8Bright
255.8Bright
265.7Bright
275.7Bright
285.6Bright
295.6Bright
305.5Bright
315.5Bright
Planning a trip in August

Hazard calendar for Keizer

In seasonPeak

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

Keizer'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 Keizer?

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

7.2
Sightseeing
4th-best month of the year
8.7
Beach & pool
1st-best month of the year

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

What to pack for Keizer in August

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

In August, Keizer sees daytime highs around 83°F and nights near 57°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Keizer 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 Keizer 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 highHighModerateLowJul 17UV 8Dec 17UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May8Very high
Jun7High
Jul8Very high
Aug7Very high
Sep5Moderate
Oct4Moderate
Nov1Low
Dec1Low

Air quality in Keizer 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 Keizer is worst in September — around 34 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (January, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1531 µg/m³Jan 167 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar11Good
Apr11Good
May9Good
Jun8Good
Jul7Good
Aug14Moderate
Sep34Moderate
Oct11Good
Nov10Good
Dec8Good
Location & terrain

Where is Keizer?

Keizer sits at 45.0°N, 123.0°W, 138 ft above sea level, in United States. The nearest listed city is Hayesville, 1.9 mi away.

Topography around Keizer

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

Within 2 miles, the terrain around Keizer has only modest variations in elevation — a maximum elevation change of 108 ft around an average of 144 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,079 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,492 ft.

The land around Keizer is covered by trees (39%) and artificial surfaces (36%) within 2 miles, trees (37%), cropland (31%) and grassland (21%) within 10 miles, and trees (71%) within 50 miles.

2 miles
108 ft
10 miles
1,079 ft
50 miles
5,492 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Hayesville 1.9 mi · Salem 3.1 mi · Four Corners 5.0 mi · Woodburn 14 mi · Dallas 15 mi · McMinnville 17 mi · Newberg 22 mi · Wilsonville 25 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 Keizer (44.9901°, -123.0262°, elevation 138 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).