Walla Walla weather in October

In October, Walla Walla sees average daytime highs of 60°F and overnight lows near 40°F, with 2.1 in of precipitation across 8.8 wet days and about 10.7 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 66°F in the first days to 53°F by the end. The sky is clear or mostly clear about 41% 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 Walla Walla's 5th-clearest and 10th-windiest month. For the whole year in context, see Walla Walla's year-round climate.

Daytime high
60°
6th warmest
Overnight low
40°
7th coldest
Precipitation
2.1 in
8.8 wet days
Daylight
10 h 42 min
6:18 AM – 4:58 PM
Cloud cover
51%
5th clearest
Wind
5 mph
10th windiest
Solar energy
3.08 kWh/m²
Travel score
5.0
out of 10

Walla Walla is city in Walla Walla County, Washington, United States.

Density
970/km²
people per km²
Founded
1856

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 66°F in the first days to 53°F by the end.

A typical October day in Walla Walla reaches about 60°F in the afternoon and slips back to 40°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 50°F and 70°F. Set against its neighbours, October runs about 14°F cooler than September and about 14°F warmer than November.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
16745
26744
36644
46544
56544
66443
76443
86342
96342
106242
116242
126241
136141
146141
156041
166040
175940
185940
195840
205839
215739
225739
235638
245638
255538
265537
275437
285437
295337
305336
315236

How October really feels in Walla Walla

Once humidity and wind are folded in, October averages 0 days that feel above 90°F and 3 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
3
wind chill below the day's low

The story in October is cold — wind chill drags the overnight "feels like" below the raw low.

Walla Walla weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan39° / 29°3.314.28.68.90.0
Feb44° / 30°2.6126.3100.6
Mar50° / 34°2.913.4511.62.2
Apr58° / 38°2.211.51.713.34.0
May66° / 45°2.19.70.214.76.2
Jun74° / 50°1.36.3015.57.5
Jul84° / 57°0.32015.27.3
Aug83° / 56°0.42.10147.5
Sep73° / 49°0.84.1012.38.1
Oct60° / 40°2.18.80.310.75.0
Nov46° / 33°3.313.65.19.21.1
Dec38° / 28°3.614.39.28.50.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
36733
46634
56535
66436
76337
86238
96139
106040
115941
125842
135743
145743
155644
165545
175545
185545
195446
205446
215347
225347
235248
245248
255149
265149
275050
284951
294951
304753
314753

Chance of precipitation in October

Any precipitationSnow

Walla Walla gets around 2.1 in of rain and snow over 8.8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 28% and peaks near 39% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1190
2200
3200
4210
5210
6220
7220
8230
9230
10240
11240
12240
13250
14250
15260
16271
17271
18281
19291
20301
21311
22322
23322
24332
25343
26353
27363
28374
29374
30385
31396

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in October

Winds average 5 mph in October.

Across October, daily wind ranges from about 5 mph on the calmest days to 6 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
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 5:58 AM to 6:40 AM, and sunset from 5:27 PM to 4:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.55:585:27
211.45:595:25
311.46:015:23
411.36:025:21
511.36:035:19
611.26:055:17
711.26:065:15
811.16:075:13
911.06:095:11
1011.06:105:09
1110.96:115:08
1210.96:135:06
1310.86:145:04
1410.86:165:02
1510.76:175:00
1610.76:184:58
1710.66:204:57
1810.66:214:55
1910.56:234:53
2010.56:244:51
2110.46:264:50
2210.46:274:48
2310.36:284:46
2410.26:304:45
2510.26:314:43
2610.16:334:41
2710.16:344:40
2810.06:364:38
2910.06:374:37
309.96:384:35
319.96:404:34

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.08 kWh/m².

For context, solar energy here swings from a low near 1.28 kWh/m² to a high of 7.84 kWh/m² in July across the year — October's 3.08 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Moderate
33.9Moderate
43.8Moderate
53.7Moderate
63.7Moderate
73.6Moderate
83.5Moderate
93.5Moderate
103.4Moderate
113.4Moderate
123.3Moderate
133.2Moderate
143.2Moderate
153.1Moderate
163.1Moderate
173.0Moderate
183.0Moderate
192.9Moderate
202.9Moderate
212.8Moderate
222.8Moderate
232.7Moderate
242.6Moderate
252.6Moderate
262.5Moderate
272.5Moderate
282.4Moderate
292.4Moderate
302.3Moderate
312.3Moderate
Planning a trip in October

Hazard calendar for Walla Walla

In seasonPeak

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

Walla Walla's rainy season runs October–May, 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 Walla Walla?

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
1.0
Beach & pool
6th-best month of the year

October is a reasonable time to visit Walla Walla for sightseeing.

What to pack for Walla Walla in October

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

In October, Walla Walla sees daytime highs around 60°F and nights near 40°F. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

UV index in Walla Walla in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Walla Walla peaks around July 15 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highVery highHighModerateLowJul 15UV 8Dec 15UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May7Very high
Jun7High
Jul9Very high
Aug6High
Sep5Moderate
Oct4Moderate
Nov1Low
Dec1Low

Air quality in Walla Walla 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 Walla Walla is worst in August — around 29 µg/m³ PM2.5 (moderate), about 4.4× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1827 µg/m³Dec 237 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar11Good
Apr11Good
May9Good
Jun9Good
Jul16Moderate
Aug29Moderate
Sep20Moderate
Oct12Moderate
Nov12Good
Dec7Good
Location & terrain

Where is Walla Walla?

Walla Walla sits at 46.1°N, 118.3°W, 942 ft above sea level, in United States. The nearest listed city is Pendleton, 35 mi away.

Topography around Walla Walla

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

Within 2 miles, the terrain around Walla Walla has only modest variations in elevation — a maximum elevation change of 272 ft around an average of 945 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,333 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,115 ft.

The land around Walla Walla is covered by artificial surfaces (34%), trees (26%) and grassland (23%) within 2 miles, cropland (67%) and grassland (23%) within 10 miles, and grassland (44%), cropland (29%) and trees (24%) within 50 miles.

2 miles
272 ft
10 miles
3,333 ft
50 miles
6,115 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Pendleton 35 mi · Pasco 39 mi · Kennewick 39 mi · Tri-Cities 43 mi · Richland 48 mi · Hermiston 48 mi · Lewiston 68 mi · Lewiston Orchards 69 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 Walla Walla (46.0646°, -118.343°, elevation 942 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).