West Linn weather in May

In May, West Linn sees average daytime highs of 65°F and overnight lows near 46°F, with 3.5 in of precipitation across 12.3 wet days and about 14.6 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 62°F in the first days to 67°F by the end. The sky is clear or mostly clear about 20% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 hours at the start of May to 15 h 12 min by month's end. Set against the rest of the year, May is West Linn's 6th-clearest and 8th-windiest month. For the whole year in context, see West Linn's year-round climate.

Daytime high
65°
5th warmest
Overnight low
46°
8th coldest
Precipitation
3.5 in
12.3 wet days
Daylight
14 h 42 min
4:46 AM – 7:27 PM
Cloud cover
66%
6th clearest
Wind
4 mph
8th windiest
Solar energy
5.57 kWh/m²
Travel score
5.5
out of 10

West Linn is city in Clackamas County, Oregon, United States.

Density
1,275/km²
people per km²
Founded
1913

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 62°F in the first days to 67°F by the end.

A typical May day in West Linn reaches about 65°F in the afternoon and slips back to 46°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 54°F and 78°F. Set against its neighbours, May runs about 7°F warmer than April and about 5°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16243
26243
36243
46243
56343
66344
76344
86344
96444
106444
116445
126445
136445
146445
156546
166546
176546
186546
196546
206547
216647
226647
236647
246647
256647
266748
276748
286748
296748
306748
316748

How May really feels in West Linn

Once humidity and wind are folded in, May 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

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

West Linn weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan46° / 35°7.817.75.88.91.0
Feb49° / 35°6.115.65.410.11.7
Mar53° / 37°6.618.55.611.62.4
Apr58° / 40°5.4172.813.23.5
May65° / 46°3.512.30.414.65.5
Jun70° / 50°2.29015.46.7
Jul79° / 54°0.62.9015.18.2
Aug80° / 55°0.72.9013.98.2
Sep73° / 50°2.06.4012.37.6
Oct62° / 44°5.012.40.110.74.9
Nov51° / 38°8.017.939.31.9
Dec45° / 35°8.918.76.78.60.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23466
33565
43565
53565
63565
73565
83565
93565
103565
113367
123367
133367
143268
153268
163169
173169
183070
193169
203169
213268
223268
233268
243367
253367
263565
273466
283466
293565
303565
313466

Chance of precipitation in May

Any precipitationSnow

West Linn gets around 3.5 in of rain and snow over 12.3 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 40% and peaks near 46% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1464
2453
3443
4433
5423
6413
7413
8402
9402
10402
11402
12401
13401
14411
15411
16411
17411
18410
19410
20410
21410
22400
23400
24390
25380
26380
27370
28360
29360
30360
31360

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8982
9982
10982
11982
12982
13982
14982
15982
16973
17973
18973
19973
20973
21964
22964
23964
24955
25955
26955
27955
28955
29955
30955
31946

Wind in May

Winds average 4 mph in May.

Across May, 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
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 hours at the start of May to 15 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over May. Sunrise moves from 5:07 AM to 4:33 AM, and sunset from 7:08 PM to 7:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:077:08
214.15:057:10
314.15:047:11
414.25:027:12
514.25:017:13
614.34:597:15
714.34:587:16
814.34:577:17
914.44:557:19
1014.44:547:20
1114.54:537:21
1214.54:517:22
1314.64:507:23
1414.64:497:25
1514.64:487:26
1614.74:467:27
1714.74:457:28
1814.84:447:29
1914.84:437:30
2014.84:427:32
2114.94:417:33
2214.94:407:34
2314.94:397:35
2415.04:387:36
2515.04:377:37
2615.04:367:38
2715.14:367:39
2815.14:357:40
2915.14:347:41
3015.14:337:42
3115.24:337:43

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.57 kWh/m².

For context, solar energy here swings from a low near 1.07 kWh/m² to a high of 7.03 kWh/m² in July across the year — May's 5.57 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.4Bright
55.4Bright
65.4Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in May

Hazard calendar for West Linn

In seasonPeak

None of West Linn's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

West Linn'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 May a good time to visit West Linn?

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

5.5
Sightseeing
5th-best month of the year
2.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit West Linn for sightseeing.

What to pack for West Linn in May

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

In May, West Linn sees daytime highs around 65°F and nights near 46°F. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

UV index in West Linn in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in West Linn peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 17UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May8Very high
Jun7High
Jul8Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in West Linn in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in West Linn is worst in September — around 40 µg/m³ PM2.5 (poor), about 7.8× the cleanest month (January, 5 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1537 µg/m³Jan 155 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb7Good
Mar9Good
Apr9Good
May8Good
Jun9Good
Jul8Good
Aug20Moderate
Sep40Poor
Oct10Good
Nov9Good
Dec6Good
Location & terrain

Where is West Linn?

West Linn sits at 45.4°N, 122.6°W, 135 ft above sea level, in United States. The nearest listed city is Oregon City, 0.6 mi away.

Topography around West Linn

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

Within 2 miles, the terrain around West Linn has only modest variations in elevation — a maximum elevation change of 748 ft around an average of 253 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 West Linn is covered by trees (63%) and artificial surfaces (24%) within 2 miles, trees (63%) within 10 miles, and trees (76%) within 50 miles.

2 miles
748 ft
10 miles
1,161 ft
50 miles
11,093 ft
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Oregon City 0.6 mi · Oak Grove 3.7 mi · Lake Oswego 5.0 mi · Milwaukie 5.6 mi · Happy Valley 6.8 mi · Tualatin 7.5 mi · Canby 8.1 mi · Lents 8.1 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 West Linn (45.3657°, -122.6123°, elevation 135 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).