Happy Valley weather in October

In October, Happy Valley sees average daytime highs of 62°F and overnight lows near 45°F, with 5.8 in of rain across 12.9 wet days and about 10.7 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 68°F in the first days to 57°F by the end. The sky is clear or mostly clear about 30% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 9 h 54 min by month's end. Set against the rest of the year, October is Happy Valley's 5th-clearest and 7th-windiest month. For the whole year in context, see Happy Valley's year-round climate.

Daytime high
62°
6th warmest
Overnight low
45°
7th coldest
Rainfall
5.8 in
12.9 wet days
Daylight
10 h 42 min
6:34 AM – 5:16 PM
Cloud cover
60%
5th clearest
Wind
5 mph
7th windiest
Solar energy
2.59 kWh/m²
Travel score
5.0
out of 10

Happy Valley is city in Oregon, USA.

Density
858/km²
people per km²
Founded
1851

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 68°F in the first days to 57°F by the end.

A typical October day in Happy Valley reaches about 62°F in the afternoon and slips back to 45°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 54°F and 72°F. Set against its neighbours, October runs about 12°F cooler than September and about 11°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16949
26849
36848
46748
56748
66647
76647
86547
96547
106547
116446
126446
136446
146346
156346
166245
176245
186245
196145
206145
216044
226044
236044
245944
255944
265843
275843
285743
295743
305742
315642

How October really feels in Happy Valley

Once humidity and wind are folded in, October 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

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

Happy Valley weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan46° / 36°8.718.33.78.91.0
Feb50° / 37°6.515.63.210.11.8
Mar55° / 39°7.018.22.211.62.7
Apr60° / 42°5.616.60.213.23.9
May67° / 47°3.511.6014.75.8
Jun72° / 52°2.39015.46.8
Jul80° / 56°0.62.9015.17.9
Aug81° / 56°0.82.9013.97.9
Sep74° / 52°2.36.4012.37.6
Oct62° / 45°5.812.9010.75.0
Nov51° / 40°9.0181.19.32.1
Dec45° / 36°9.618.43.68.60.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25644
35446
45347
55248
65050
74951
84852
94654
104555
114456
124357
134357
144357
154159
164159
174159
184159
194159
204060
214060
224060
234060
244060
253961
263862
273763
283763
293664
303565
313466

Chance of precipitation in October

Any precipitation

Happy Valley gets around 5.8 in of rain over 12.9 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 41% and peaks near 52% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
131
232
333
433
534
635
736
836
937
1038
1138
1239
1340
1440
1541
1642
1742
1843
1943
2044
2144
2245
2346
2446
2547
2648
2749
2849
2950
3051
3152

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19181
29271
39271
49460
59460
69550
79550
89550
99640
109640
119640
129640
139730
149730
159730
169730
179820
189820
199820
209820
219820
229820
239820
249820
259820
269820
279820
289820
299820
309820
319820

Wind in October

Winds average 5 mph in October.

Across October, 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
14calm
24calm
34calm
44calm
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 October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 96 minutes over October. Sunrise moves from 6:14 AM to 6:55 AM, and sunset from 5:44 PM to 4:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:145:44
211.46:165:42
311.46:175:40
411.36:185:38
511.36:195:36
611.26:215:34
711.26:225:32
811.16:235:31
911.16:255:29
1011.06:265:27
1111.06:285:25
1210.96:295:23
1310.96:305:21
1410.86:325:20
1510.76:335:18
1610.76:345:16
1710.66:365:14
1810.66:375:13
1910.56:385:11
2010.56:405:09
2110.46:415:07
2210.46:435:06
2310.36:445:04
2410.36:455:03
2510.26:475:01
2610.26:484:59
2710.16:504:58
2810.16:514:56
2910.06:524:55
3010.06:544:53
319.96:554:52

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.59 kWh/m².

For context, solar energy here swings from a low near 1.02 kWh/m² to a high of 6.96 kWh/m² in July across the year — October's 2.59 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.4Moderate
43.3Moderate
53.2Moderate
63.2Moderate
73.1Moderate
83.0Moderate
93.0Moderate
102.9Moderate
112.8Moderate
122.8Moderate
132.7Moderate
142.7Moderate
152.6Moderate
162.6Moderate
172.5Moderate
182.5Moderate
192.4Moderate
202.4Moderate
212.3Moderate
222.3Moderate
232.3Moderate
242.2Moderate
252.2Moderate
262.1Moderate
272.1Moderate
282.0Moderate
292.0Dim
301.9Dim
311.9Dim
Planning a trip in October

Hazard calendar for Happy Valley

In seasonPeak

In October, Happy Valley sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Happy Valley'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 October a good time to visit Happy Valley?

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

5.0
Sightseeing
6th-best month of the year
1.4
Beach & pool
6th-best month of the year

October is a reasonable time to visit Happy Valley for sightseeing.

What to pack for Happy Valley in October

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

In October, Happy Valley sees daytime highs around 62°F and nights near 45°F. Worth packing: a warm layer and rain gear. About 13 days see rain.

a warm layerrain gear

UV index in Happy Valley in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Happy Valley 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
Jun7High
Jul8Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Happy Valley in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Happy Valley is worst in August — around 35 µg/m³ PM2.5 (moderate), about 6.3× the cleanest month (December, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 2334 µg/m³Dec 226 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar10Good
Apr10Good
May9Good
Jun8Good
Jul8Good
Aug35Moderate
Sep33Moderate
Oct11Good
Nov8Good
Dec6Good
Location & terrain

Where is Happy Valley?

Happy Valley sits at 45.4°N, 122.5°W, 502 ft above sea level, in United States. The nearest listed city is Lents, 3.1 mi away.

Topography around Happy Valley

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

Within 2 miles, the terrain around Happy Valley has significant variations in elevation — a maximum elevation change of 883 ft around an average of 538 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,161 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 11,093 ft.

The land around Happy Valley is covered by trees (74%) within 2 miles, trees (59%) and artificial surfaces (20%) within 10 miles, and trees (78%) within 50 miles.

2 miles
883 ft
10 miles
1,161 ft
50 miles
11,093 ft
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Lents 3.1 mi · Milwaukie 5.0 mi · Oak Grove 5.6 mi · Gresham 6.2 mi · West Linn 6.8 mi · Lake Oswego 6.8 mi · Oregon City 7.5 mi · Portland 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 Happy Valley (45.4468°, -122.5304°, elevation 502 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).