Sunnyside weather in April

In April, Sunnyside sees average daytime highs of 65°F and overnight lows near 43°F, with 0.7 in of precipitation across 4.6 wet days and about 13.3 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 61°F in the first days to 69°F by the end. The sky is clear or mostly clear about 27% 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 Sunnyside's 7th-clearest and 1st-windiest month. For the whole year in context, see Sunnyside's year-round climate.

Daytime high: 65°; 6th warmest
Overnight low: 43°; 6th coldest
Precipitation: 0.7 in; 4.6 wet days
Daylight: 13 h 18 min; 5:21 AM – 6:40 PM
Cloud cover: 60%; 7th clearest
Wind: 7 mph; 1st windiest
Solar energy: 5.74 kWh/m²
Travel score: 6.5; out of 10

Sunnyside is city in Yakima County, Washington, United States.

Density: 950/km²; people per km²
Founded: 1902

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

← March Sunnyside 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 61°F in the first days to 69°F by the end.

A typical April day in Sunnyside reaches about 65°F in the afternoon and slips back to 43°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 56°F and 76°F. Set against its neighbours, April runs about 9°F warmer than March and about 10°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)	60	60	61	61	61	62	62	62	62	63	63	63	64	64	64	65	65	65	66	66	67	67	67	68	68	68	69	69	69	70
Avg low (°F)	40	40	40	40	40	41	41	41	41	41	42	42	42	42	42	43	43	43	43	44	44	44	44	44	45	45	45	46	46	46

	Avg high (°F)	Avg low (°F)
1	60	40
2	60	40
3	61	40
4	61	40
5	61	40
6	62	41
7	62	41
8	62	41
9	62	41
10	63	41
11	63	42
12	63	42
13	64	42
14	64	42
15	64	42
16	65	43
17	65	43
18	65	43
19	66	43
20	66	44
21	67	44
22	67	44
23	67	44
24	68	44
25	68	45
26	68	45
27	69	45
28	69	46
29	69	46
30	70	46

How April really feels in Sunnyside

Once humidity and wind are folded in, April 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

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

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

Sunnyside weather by month

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

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	40° / 28°	1.5	9.2	3.5	8.8	0.1
Feb	47° / 31°	1.1	6.3	1.9	10	1.5
Mar	55° / 36°	1.0	6.6	0.6	11.6	3.9
Apr	65° / 43°	0.7	4.6	0.1	13.3	6.5
May	75° / 51°	0.7	4.2	0	14.7	7.7
Jun	82° / 57°	0.4	3	0	15.5	7.2
Jul	91° / 63°	0.2	1.3	0	15.2	4.6
Aug	90° / 61°	0.2	1.1	0	14	5.1
Sep	80° / 53°	0.3	1.9	0	12.3	8.0
Oct	64° / 43°	1.0	5.1	0.1	10.7	6.4
Nov	48° / 34°	1.3	7.8	1	9.2	2.0
Dec	39° / 28°	1.7	9	3.5	8.5	0.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 20% of April, with mostly cloudy or overcast conditions the remaining 54%. 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 (%)	42	42	42	42	42	42	41	42	42	42	43	43	43	45	45	45	47	48	48	49	49	50	51	51	52	53	53	53	53	53
Cloudier (%)	58	58	58	58	58	58	59	58	58	58	57	57	57	55	55	55	53	52	52	51	51	50	49	49	48	47	47	47	47	47

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
3	42	58
4	42	58
5	42	58
6	42	58
7	41	59
8	42	58
9	42	58
10	42	58
11	43	57
12	43	57
13	43	57
14	45	55
15	45	55
16	45	55
17	47	53
18	48	52
19	48	52
20	49	51
21	49	51
22	50	50
23	51	49
24	51	49
25	52	48
26	53	47
27	53	47
28	53	47
29	53	47
30	53	47

Chance of precipitation in April

Any precipitation

Sunnyside gets around 0.7 in of rain and snow over 4.6 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 15% and peaks near 17% on the wettest days, and about 0 day brings snow.

	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 (%)	17	16	16	16	16	16	17	17	17	17	17	17	17	17	17	17	16	16	15	15	15	14	14	13	13	13	12	12	12	12

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

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 7 mph in April, the windiest month of the year.

Across April, daily wind ranges from about 6 mph on the calmest days to 7 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	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
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	7	calm
12	7	calm
13	7	calm
14	7	calm
15	7	calm
16	7	calm
17	7	calm
18	7	calm
19	7	calm
20	7	calm
21	7	calm
22	7	calm
23	7	calm
24	7	calm
25	7	calm
26	7	calm
27	7	calm
28	7	calm
29	7	calm
30	7	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 5:50 AM to 4:56 AM, and sunset from 6:19 PM to 6:59 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	13.2	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)	5:50	5:48	5:46	5:44	5:42	5:40	5:38	5:36	5:34	5:32	5:30	5:28	5:26	5:24	5:23	5:21	5:19	5:17	5:15	5:13	5:11	5:10	5:08	5:06	5:04	5:03	5:01	4:59	4:58	4:56
Sunset (PM)	6:19	6:21	6:22	6:24	6:25	6:26	6:28	6:29	6:30	6:32	6:33	6:34	6:36	6:37	6:38	6:40	6:41	6:43	6:44	6:45	6:47	6:48	6:49	6:51	6:52	6:53	6:55	6:56	6:57	6:59

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.5	5:50	6:19
2	12.5	5:48	6:21
3	12.6	5:46	6:22
4	12.7	5:44	6:24
5	12.7	5:42	6:25
6	12.8	5:40	6:26
7	12.8	5:38	6:28
8	12.9	5:36	6:29
9	12.9	5:34	6:30
10	13.0	5:32	6:32
11	13.0	5:30	6:33
12	13.1	5:28	6:34
13	13.2	5:26	6:36
14	13.2	5:24	6:37
15	13.3	5:23	6:38
16	13.3	5:21	6:40
17	13.4	5:19	6:41
18	13.4	5:17	6:43
19	13.5	5:15	6:44
20	13.5	5:13	6:45
21	13.6	5:11	6:47
22	13.6	5:10	6:48
23	13.7	5:08	6:49
24	13.7	5:06	6:51
25	13.8	5:04	6:52
26	13.8	5:03	6:53
27	13.9	5:01	6:55
28	13.9	4:59	6:56
29	14.0	4:58	6:57
30	14.0	4:56	6:59

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.74 kWh/m².

For context, solar energy here swings from a low near 1.3 kWh/m² to a high of 7.84 kWh/m² in July across the year — April's 5.74 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)	4.9	5.0	5.0	5.1	5.2	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	6.1	6.1	6.2	6.2	6.3	6.3	6.4	6.4	6.4
Level	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	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	4.9	Bright
2	5.0	Bright
3	5.0	Bright
4	5.1	Bright
5	5.2	Bright
6	5.2	Bright
7	5.3	Bright
8	5.3	Bright
9	5.4	Bright
10	5.4	Bright
11	5.5	Bright
12	5.5	Bright
13	5.6	Bright
14	5.7	Bright
15	5.7	Bright
16	5.8	Bright
17	5.8	Bright
18	5.9	Bright
19	5.9	Bright
20	6.0	Bright
21	6.0	Intense
22	6.1	Intense
23	6.1	Intense
24	6.2	Intense
25	6.2	Intense
26	6.3	Intense
27	6.3	Intense
28	6.4	Intense
29	6.4	Intense
30	6.4	Intense

Planning a trip in April

Is April a good time to visit Sunnyside?

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

6.5

Sightseeing

4th-best month of the year

2.4

Beach & pool

7th-best month of the year

April is a reasonable time to visit Sunnyside for sightseeing.

What to pack for Sunnyside in April

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

In April, Sunnyside sees daytime highs around 65°F and nights near 43°F. Worth packing: a warm layer and sun protection. About 5 days see rain.

a warm layersun protection

UV index in Sunnyside 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 Sunnyside peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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	6	9	6	5	4	1	1
Level	Low	Low	Moderate	High	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	High
May	7	Very high
Jun	6	High
Jul	9	Very high
Aug	6	High
Sep	5	Moderate
Oct	4	Moderate
Nov	1	Low
Dec	1	Low

Air quality in Sunnyside 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 Sunnyside is worst in August — around 30 µg/m³ PM2.5 (moderate), about 4.0× 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)	9	10	12	10	9	10	13	30	23	10	10	7
Level	Good	Good	Good	Good	Good	Good	Moderate	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	9	Good
Feb	10	Good
Mar	12	Good
Apr	10	Good
May	9	Good
Jun	10	Good
Jul	13	Moderate
Aug	30	Moderate
Sep	23	Moderate
Oct	10	Good
Nov	10	Good
Dec	7	Good

Location & terrain

Where is Sunnyside?

Sunnyside sits at 46.3°N, 120.0°W, 745 ft above sea level, in United States. The nearest listed city is Yakima, 30 mi away.

Topography around Sunnyside

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

Within 2 miles, the terrain around Sunnyside has only modest variations in elevation — a maximum elevation change of 289 ft around an average of 764 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,152 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,568 ft.

The land around Sunnyside is covered by cropland (34%), grassland (29%) and artificial surfaces (24%) within 2 miles, grassland (46%) and cropland (38%) within 10 miles, and grassland (62%) and cropland (24%) within 50 miles.

2 miles

289 ft

cropland 34%

10 miles

2,152 ft

grassland 46%

50 miles

5,568 ft

grassland 62%

treesgrasslandcroplandartificial surfacesbare terrainwater

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

April weather nearby: Yakima 30 mi · Richland 35 mi · Tri-Cities 39 mi · Kennewick 42 mi · Pasco 43 mi · Hermiston 48 mi · Ellensburg 53 mi · Moses Lake 66 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 Sunnyside (46.3237°, -120.0087°, elevation 745 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	60	40
2	60	40
3	61	40
4	61	40
5	61	40
6	62	41
7	62	41
8	62	41
9	62	41
10	63	41
11	63	42
12	63	42
13	64	42
14	64	42
15	64	42
16	65	43
17	65	43
18	65	43
19	66	43
20	66	44
21	67	44
22	67	44
23	67	44
24	68	44
25	68	45
26	68	45
27	69	45
28	69	46
29	69	46
30	70	46

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
3	42	58
4	42	58
5	42	58
6	42	58
7	41	59
8	42	58
9	42	58
10	42	58
11	43	57
12	43	57
13	43	57
14	45	55
15	45	55
16	45	55
17	47	53
18	48	52
19	48	52
20	49	51
21	49	51
22	50	50
23	51	49
24	51	49
25	52	48
26	53	47
27	53	47
28	53	47
29	53	47
30	53	47

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

	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	60	40
2	60	40
3	61	40
4	61	40
5	61	40
6	62	41
7	62	41
8	62	41
9	62	41
10	63	41
11	63	42
12	63	42
13	64	42
14	64	42
15	64	42
16	65	43
17	65	43
18	65	43
19	66	43
20	66	44
21	67	44
22	67	44
23	67	44
24	68	44
25	68	45
26	68	45
27	69	45
28	69	46
29	69	46
30	70	46

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
3	42	58
4	42	58
5	42	58
6	42	58
7	41	59
8	42	58
9	42	58
10	42	58
11	43	57
12	43	57
13	43	57
14	45	55
15	45	55
16	45	55
17	47	53
18	48	52
19	48	52
20	49	51
21	49	51
22	50	50
23	51	49
24	51	49
25	52	48
26	53	47
27	53	47
28	53	47
29	53	47
30	53	47

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

	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	60	40
2	60	40
3	61	40
4	61	40
5	61	40
6	62	41
7	62	41
8	62	41
9	62	41
10	63	41
11	63	42
12	63	42
13	64	42
14	64	42
15	64	42
16	65	43
17	65	43
18	65	43
19	66	43
20	66	44
21	67	44
22	67	44
23	67	44
24	68	44
25	68	45
26	68	45
27	69	45
28	69	46
29	69	46
30	70	46

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
3	42	58
4	42	58
5	42	58
6	42	58
7	41	59
8	42	58
9	42	58
10	42	58
11	43	57
12	43	57
13	43	57
14	45	55
15	45	55
16	45	55
17	47	53
18	48	52
19	48	52
20	49	51
21	49	51
22	50	50
23	51	49
24	51	49
25	52	48
26	53	47
27	53	47
28	53	47
29	53	47
30	53	47

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

	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