Walla Walla weather in April

In April, Walla Walla sees average daytime highs of 58°F and overnight lows near 38°F, with 2.2 in of precipitation across 11.5 wet days and about 13.3 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 54°F in the first days to 61°F by the end. The sky is clear or mostly clear about 23% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of April to 14 hours by month's end. Set against the rest of the year, April is Walla Walla's 7th-clearest and 1st-windiest month. For the whole year in context, see Walla Walla's year-round climate.

Daytime high: 58°; 7th warmest
Overnight low: 38°; 6th coldest
Precipitation: 2.2 in; 11.5 wet days
Daylight: 13 h 18 min; 5:14 AM – 6:33 PM
Cloud cover: 63%; 7th clearest
Wind: 6 mph; 1st windiest
Solar energy: 5.44 kWh/m²
Travel score: 4.0; 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.

← March Walla Walla year-round climate May →Best places to visit in April

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 54°F in the first days to 61°F by the end.

A typical April day in Walla Walla reaches about 58°F in the afternoon and slips back to 38°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 48°F and 69°F. Set against its neighbours, April runs about 7°F warmer than March and about 9°F cooler than May.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°F)	54	54	54	54	55	55	55	55	55	56	56	56	57	57	57	58	58	58	58	59	59	60	60	60	60	61	61	61	62	62
Avg low (°F)	36	36	36	36	37	37	37	37	37	37	37	38	38	38	38	38	38	38	39	39	39	39	39	40	40	40	40	40	40	41

	Avg high (°F)	Avg low (°F)
1	54	36
2	54	36
3	54	36
4	54	36
5	55	37
6	55	37
7	55	37
8	55	37
9	55	37
10	56	37
11	56	37
12	56	38
13	57	38
14	57	38
15	57	38
16	58	38
17	58	38
18	58	38
19	58	39
20	59	39
21	59	39
22	60	39
23	60	39
24	60	40
25	60	40
26	61	40
27	61	40
28	61	40
29	62	40
30	62	41

How April really feels in Walla Walla

Once humidity and wind are folded in, April averages 0 days that feel above 90°F and 9 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

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

Walla Walla weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	39° / 29°	3.3	14.2	8.6	8.9	0.0
Feb	44° / 30°	2.6	12	6.3	10	0.6
Mar	50° / 34°	2.9	13.4	5	11.6	2.2
Apr	58° / 38°	2.2	11.5	1.7	13.3	4.0
May	66° / 45°	2.1	9.7	0.2	14.7	6.2
Jun	74° / 50°	1.3	6.3	0	15.5	7.5
Jul	84° / 57°	0.3	2	0	15.2	7.3
Aug	83° / 56°	0.4	2.1	0	14	7.5
Sep	73° / 49°	0.8	4.1	0	12.3	8.1
Oct	60° / 40°	2.1	8.8	0.3	10.7	5.0
Nov	46° / 33°	3.3	13.6	5.1	9.2	1.1
Dec	38° / 28°	3.6	14.3	9.2	8.5	0.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 19% of April, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	38	38	38	38	38	37	37	37	37	37	38	38	38	39	40	41	41	42	43	44	45	46	47	48	49	49	51	51	52	52
Cloudier (%)	62	62	62	62	62	63	63	63	63	63	62	62	62	61	60	59	59	58	57	56	55	54	53	52	51	51	49	49	48	48

	Clearer (%)	Cloudier (%)
1	38	62
2	38	62
3	38	62
4	38	62
5	38	62
6	37	63
7	37	63
8	37	63
9	37	63
10	37	63
11	38	62
12	38	62
13	38	62
14	39	61
15	40	60
16	41	59
17	41	59
18	42	58
19	43	57
20	44	56
21	45	55
22	46	54
23	47	53
24	48	52
25	49	51
26	49	51
27	51	49
28	51	49
29	52	48
30	52	48

Chance of precipitation in April

Any precipitationSnow

Walla Walla gets around 2.2 in of rain and snow over 11.5 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 38% and peaks near 45% on the wettest days, and about 2 days bring snow. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	44	44	44	44	44	44	45	45	45	45	44	43	43	42	41	40	38	37	36	35	34	33	32	31	30	30	30	30	30	30
Snow chance (%)	11	11	10	10	9	9	8	8	7	7	6	6	5	5	5	4	4	4	4	4	3	3	3	3	3	3	2	2	2	2

	Rain chance (%)	Snow chance (%)
1	44	11
2	44	11
3	44	10
4	44	10
5	44	9
6	44	9
7	45	8
8	45	8
9	45	7
10	45	7
11	44	6
12	43	6
13	43	5
14	42	5
15	41	5
16	40	4
17	38	4
18	37	4
19	36	4
20	35	4
21	34	3
22	33	3
23	32	3
24	31	3
25	30	3
26	30	3
27	30	2
28	30	2
29	30	2
30	30	2

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

Wind in April

Winds average 6 mph in April, the windiest month of the year.

Across April, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (mph)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	6	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	6	calm
28	6	calm
29	6	calm
30	6	calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 30 min at the start of April to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 90 minutes over April. Sunrise moves from 5:43 AM to 4:50 AM, and sunset from 6:13 PM to 6:52 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.5	12.5	12.6	12.7	12.7	12.8	12.8	12.9	12.9	13.0	13.0	13.1	13.1	13.2	13.3	13.3	13.4	13.4	13.5	13.5	13.6	13.6	13.7	13.7	13.8	13.8	13.9	13.9	14.0	14.0
Sunrise (AM)	5:43	5:41	5:39	5:37	5:35	5:34	5:32	5:30	5:28	5:26	5:24	5:22	5:20	5:18	5:16	5:14	5:13	5:11	5:09	5:07	5:05	5:03	5:02	5:00	4:58	4:57	4:55	4:53	4:52	4:50
Sunset (PM)	6:13	6:14	6:15	6:17	6:18	6:19	6:21	6:22	6:23	6:25	6:26	6:27	6:29	6:30	6:31	6:33	6:34	6:36	6:37	6:38	6:40	6:41	6:42	6:44	6:45	6:46	6:48	6:49	6:50	6:52

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.5	5:43	6:13
2	12.5	5:41	6:14
3	12.6	5:39	6:15
4	12.7	5:37	6:17
5	12.7	5:35	6:18
6	12.8	5:34	6:19
7	12.8	5:32	6:21
8	12.9	5:30	6:22
9	12.9	5:28	6:23
10	13.0	5:26	6:25
11	13.0	5:24	6:26
12	13.1	5:22	6:27
13	13.1	5:20	6:29
14	13.2	5:18	6:30
15	13.3	5:16	6:31
16	13.3	5:14	6:33
17	13.4	5:13	6:34
18	13.4	5:11	6:36
19	13.5	5:09	6:37
20	13.5	5:07	6:38
21	13.6	5:05	6:40
22	13.6	5:03	6:41
23	13.7	5:02	6:42
24	13.7	5:00	6:44
25	13.8	4:58	6:45
26	13.8	4:57	6:46
27	13.9	4:55	6:48
28	13.9	4:53	6:49
29	14.0	4:52	6:50
30	14.0	4:50	6:52

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.44 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 — April's 5.44 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	4.7	4.7	4.8	4.8	4.9	4.9	5.0	5.0	5.1	5.1	5.2	5.3	5.3	5.4	5.4	5.5	5.5	5.6	5.7	5.7	5.8	5.8	5.9	5.9	6.0	6.0	6.0	6.1	6.1	6.2
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	4.7	Bright
2	4.7	Bright
3	4.8	Bright
4	4.8	Bright
5	4.9	Bright
6	4.9	Bright
7	5.0	Bright
8	5.0	Bright
9	5.1	Bright
10	5.1	Bright
11	5.2	Bright
12	5.3	Bright
13	5.3	Bright
14	5.4	Bright
15	5.4	Bright
16	5.5	Bright
17	5.5	Bright
18	5.6	Bright
19	5.7	Bright
20	5.7	Bright
21	5.8	Bright
22	5.8	Bright
23	5.9	Bright
24	5.9	Bright
25	6.0	Bright
26	6.0	Intense
27	6.0	Intense
28	6.1	Intense
29	6.1	Intense
30	6.2	Intense

Planning a trip in April

Hazard calendar for Walla Walla

In seasonPeak

In April, 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 April a good time to visit Walla Walla?

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

4.0

Sightseeing

7th-best month of the year

0.2

Beach & pool

7th-best month of the year

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

What to pack for Walla Walla in April

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

In April, Walla Walla sees daytime highs around 58°F and nights near 38°F. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

UV index in Walla Walla in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 5 — 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	4	5	7	7	9	6	5	4	1	1
Level	Low	Low	Moderate	Moderate	Very high	High	Very high	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Low
Mar	4	Moderate
Apr	5	Moderate
May	7	Very high
Jun	7	High
Jul	9	Very high
Aug	6	High
Sep	5	Moderate
Oct	4	Moderate
Nov	1	Low
Dec	1	Low

Air quality in Walla Walla in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	7	8	11	11	9	9	16	29	20	12	12	7
Level	Good	Good	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Good	Good

	PM2.5 (µg/m³)	Level
Jan	7	Good
Feb	8	Good
Mar	11	Good
Apr	11	Good
May	9	Good
Jun	9	Good
Jul	16	Moderate
Aug	29	Moderate
Sep	20	Moderate
Oct	12	Moderate
Nov	12	Good
Dec	7	Good

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

artificial surfaces 34%

10 miles

3,333 ft

cropland 67%

50 miles

6,115 ft

grassland 44%

treesgrasslandcroplandartificial surfacesbare terrainwater

← March Walla Walla year-round climate May →Best places to visit in April

April 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

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).

	Avg high (°F)	Avg low (°F)
1	54	36
2	54	36
3	54	36
4	54	36
5	55	37
6	55	37
7	55	37
8	55	37
9	55	37
10	56	37
11	56	37
12	56	38
13	57	38
14	57	38
15	57	38
16	58	38
17	58	38
18	58	38
19	58	39
20	59	39
21	59	39
22	60	39
23	60	39
24	60	40
25	60	40
26	61	40
27	61	40
28	61	40
29	62	40
30	62	41

	Clearer (%)	Cloudier (%)
1	38	62
2	38	62
3	38	62
4	38	62
5	38	62
6	37	63
7	37	63
8	37	63
9	37	63
10	37	63
11	38	62
12	38	62
13	38	62
14	39	61
15	40	60
16	41	59
17	41	59
18	42	58
19	43	57
20	44	56
21	45	55
22	46	54
23	47	53
24	48	52
25	49	51
26	49	51
27	51	49
28	51	49
29	52	48
30	52	48

	Rain chance (%)	Snow chance (%)
1	44	11
2	44	11
3	44	10
4	44	10
5	44	9
6	44	9
7	45	8
8	45	8
9	45	7
10	45	7
11	44	6
12	43	6
13	43	5
14	42	5
15	41	5
16	40	4
17	38	4
18	37	4
19	36	4
20	35	4
21	34	3
22	33	3
23	32	3
24	31	3
25	30	3
26	30	3
27	30	2
28	30	2
29	30	2
30	30	2

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°F)	Avg low (°F)
1	54	36
2	54	36
3	54	36
4	54	36
5	55	37
6	55	37
7	55	37
8	55	37
9	55	37
10	56	37
11	56	37
12	56	38
13	57	38
14	57	38
15	57	38
16	58	38
17	58	38
18	58	38
19	58	39
20	59	39
21	59	39
22	60	39
23	60	39
24	60	40
25	60	40
26	61	40
27	61	40
28	61	40
29	62	40
30	62	41

	Clearer (%)	Cloudier (%)
1	38	62
2	38	62
3	38	62
4	38	62
5	38	62
6	37	63
7	37	63
8	37	63
9	37	63
10	37	63
11	38	62
12	38	62
13	38	62
14	39	61
15	40	60
16	41	59
17	41	59
18	42	58
19	43	57
20	44	56
21	45	55
22	46	54
23	47	53
24	48	52
25	49	51
26	49	51
27	51	49
28	51	49
29	52	48
30	52	48

	Rain chance (%)	Snow chance (%)
1	44	11
2	44	11
3	44	10
4	44	10
5	44	9
6	44	9
7	45	8
8	45	8
9	45	7
10	45	7
11	44	6
12	43	6
13	43	5
14	42	5
15	41	5
16	40	4
17	38	4
18	37	4
19	36	4
20	35	4
21	34	3
22	33	3
23	32	3
24	31	3
25	30	3
26	30	3
27	30	2
28	30	2
29	30	2
30	30	2

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°F)	Avg low (°F)
1	54	36
2	54	36
3	54	36
4	54	36
5	55	37
6	55	37
7	55	37
8	55	37
9	55	37
10	56	37
11	56	37
12	56	38
13	57	38
14	57	38
15	57	38
16	58	38
17	58	38
18	58	38
19	58	39
20	59	39
21	59	39
22	60	39
23	60	39
24	60	40
25	60	40
26	61	40
27	61	40
28	61	40
29	62	40
30	62	41

	Clearer (%)	Cloudier (%)
1	38	62
2	38	62
3	38	62
4	38	62
5	38	62
6	37	63
7	37	63
8	37	63
9	37	63
10	37	63
11	38	62
12	38	62
13	38	62
14	39	61
15	40	60
16	41	59
17	41	59
18	42	58
19	43	57
20	44	56
21	45	55
22	46	54
23	47	53
24	48	52
25	49	51
26	49	51
27	51	49
28	51	49
29	52	48
30	52	48

	Rain chance (%)	Snow chance (%)
1	44	11
2	44	11
3	44	10
4	44	10
5	44	9
6	44	9
7	45	8
8	45	8
9	45	7
10	45	7
11	44	6
12	43	6
13	43	5
14	42	5
15	41	5
16	40	4
17	38	4
18	37	4
19	36	4
20	35	4
21	34	3
22	33	3
23	32	3
24	31	3
25	30	3
26	30	3
27	30	2
28	30	2
29	30	2
30	30	2

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100