Pendleton weather in April

In April, Pendleton sees average daytime highs of 61°F and overnight lows near 40°F, with 1.6 in of precipitation across 9.4 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 58°F in the first days to 65°F by the end. The sky is clear or mostly clear about 25% 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 Pendleton's 7th-clearest and 2nd-windiest month. For the whole year in context, see Pendleton's year-round climate.

Daytime high
61°
7th warmest
Overnight low
40°
6th coldest
Precipitation
1.6 in
9.4 wet days
Daylight
13 h 18 min
5:17 AM – 6:34 PM
Cloud cover
61%
7th clearest
Wind
7 mph
2nd windiest
Solar energy
5.52 kWh/m²
Travel score
5.1
out of 10

Pendleton is city in and seat of Umatilla County, Oregon, United States.

Density
620/km²
people per km²
Founded
1851

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 58°F in the first days to 65°F by the end.

A typical April day in Pendleton reaches about 61°F in the afternoon and slips back to 40°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 52°F and 72°F. Set against its neighbours, April runs about 7°F warmer than March and about 9°F cooler than May.

20°40°60°80°151015202530
Avg high (°F)Avg low (°F)
15738
25838
35838
45838
55839
65839
75939
85939
95939
105939
116040
126040
136040
146040
156140
166140
176140
186241
196241
206241
216341
226341
236342
246442
256442
266442
276542
286542
296543
306543

How April really feels in Pendleton

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
0
heat index over the day's high
Days feeling ≤ 32°F
0
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.

Pendleton 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.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan42° / 30°2.312.64.38.90.2
Feb46° / 31°1.810.43.210.11.3
Mar54° / 35°2.110.91.411.63.1
Apr61° / 40°1.69.40.513.35.1
May70° / 47°1.57.3014.76.9
Jun77° / 53°0.94.6015.47.8
Jul87° / 59°0.21.1015.16.1
Aug86° / 58°0.31.4013.96.5
Sep76° / 51°0.52.9012.38.3
Oct63° / 42°1.57.60.210.75.8
Nov49° / 34°2.3122.19.31.9
Dec41° / 29°2.51358.60.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
23961
34060
44060
54060
63961
73961
83862
93862
103862
114060
124060
134060
144258
154258
164258
174456
184555
194555
204654
214852
224852
234951
245050
255050
265149
275149
285248
295248
305347

Chance of precipitation in April

Any precipitationSnow

Pendleton gets around 1.6 in of rain and snow over 9.4 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 31% and peaks near 36% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1353
2353
3353
4353
5353
6353
7362
8362
9362
10362
11362
12352
13351
14341
15331
16331
17321
18311
19301
20291
21281
22271
23261
24250
25250
26240
27240
28240
29230
30230

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.

0%25%50%75%100%151015202530
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

Wind in April

Winds average 7 mph in April.

Across April, daily wind ranges from about 7 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:45 AM to 4:53 AM, and sunset from 6:14 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:456:14
212.55:436:16
312.65:416:17
412.65:406:18
512.75:386:20
612.85:366:21
712.85:346:22
812.95:326:23
912.95:306:25
1013.05:286:26
1113.05:266:27
1213.15:246:29
1313.15:226:30
1413.25:206:31
1513.25:196:33
1613.35:176:34
1713.35:156:35
1813.45:136:37
1913.45:116:38
2013.55:096:39
2113.55:086:41
2213.65:066:42
2313.75:046:43
2413.75:026:45
2513.85:016:46
2613.84:596:47
2713.94:576:49
2813.94:566:50
2914.04:546:51
3014.04:536:52

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.52 kWh/m².

For context, solar energy here swings from a low near 1.29 kWh/m² to a high of 7.84 kWh/m² in July across the year — April's 5.52 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.8Bright
34.8Bright
44.9Bright
54.9Bright
65.0Bright
75.0Bright
85.1Bright
95.2Bright
105.2Bright
115.3Bright
125.3Bright
135.4Bright
145.4Bright
155.5Bright
165.6Bright
175.6Bright
185.7Bright
195.7Bright
205.8Bright
215.8Bright
225.9Bright
235.9Bright
246.0Bright
256.0Intense
266.1Intense
276.1Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in April

Is April a good time to visit Pendleton?

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

5.1
Sightseeing
7th-best month of the year
1.0
Beach & pool
7th-best month of the year

April is a reasonable time to visit Pendleton for sightseeing.

What to pack for Pendleton in April

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

In April, Pendleton sees daytime highs around 61°F and nights near 40°F. Worth packing: a warm layer, rain gear and sun protection. About 9 days see rain.

a warm layerrain gearsun protection

UV index in Pendleton 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 Pendleton peaks around July 15 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 8Dec 14UV 1
UV index (midday)Level
Jan2Low
Feb2Low
Mar4Moderate
Apr5High
May8Very high
Jun7Very high
Jul9Very high
Aug6High
Sep5Moderate
Oct4Moderate
Nov1Low
Dec1Low

Air quality in Pendleton 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 Pendleton 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 Pendleton?

Pendleton sits at 45.7°N, 118.8°W, 1,066 ft above sea level, in United States. The nearest listed city is Hermiston, 27 mi away.

Topography around Pendleton

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

Within 2 miles, the terrain around Pendleton has only modest variations in elevation — a maximum elevation change of 486 ft around an average of 1,250 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,136 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,581 ft.

The land around Pendleton is covered by grassland (41%), cropland (27%) and artificial surfaces (22%) within 2 miles, cropland (55%) and grassland (41%) within 10 miles, and grassland (43%), cropland (28%) and trees (27%) within 50 miles.

2 miles
486 ft
10 miles
2,136 ft
50 miles
6,581 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Hermiston 27 mi · Walla Walla 35 mi · Kennewick 41 mi · Pasco 42 mi · Tri-Cities 44 mi · Richland 48 mi · Sunnyside 74 mi · Lewiston 99 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 Pendleton (45.6721°, -118.7886°, elevation 1,066 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).