Corvallis weather in January

In January, Corvallis sees average daytime highs of 47°F and overnight lows near 36°F, with 6.9 in of precipitation across 16.9 wet days and about 9 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 46°F in the first days to 49°F by the end. The sky is clear or mostly clear about 14% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 42 min at the start of January to 9 h 30 min by month's end. Set against the rest of the year, January is Corvallis's 11th-clearest and 4th-windiest month. For the whole year in context, see Corvallis's year-round climate.

Daytime high
47°
11th warmest
Overnight low
36°
2nd coldest
Precipitation
6.9 in
16.9 wet days
Daylight
9 hours
7:53 AM – 4:52 PM
Cloud cover
76%
11th clearest
Wind
5 mph
4th windiest
Solar energy
1.33 kWh/m²
Travel score
1.3
out of 10

Corvallis is city in and county seat of Benton County, Oregon, United States.

Density
1,506/km²
people per km²
Founded
1845

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 46°F in the first days to 49°F by the end.

A typical January day in Corvallis reaches about 47°F in the afternoon and slips back to 36°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 39°F and 54°F. Set against its neighbours, January runs on par with December and about 3°F cooler than February.

20°30°40°50°60°151015202531
Avg high (°F)Avg low (°F)
14635
24635
34635
44635
54635
64635
74635
84635
94635
104635
114635
124635
134735
144736
154736
164736
174736
184736
194736
204736
214836
224836
234836
244836
254836
264836
274936
284936
294936
304936
314936

How January really feels in Corvallis

Once humidity and wind are folded in, January averages 0 days that feel above 90°F and 27 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
27
wind chill below the day's low

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

Corvallis weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan47° / 36°6.916.91.791.3
Feb50° / 36°5.314.71.410.12.0
Mar55° / 38°6.016.80.911.62.8
Apr59° / 41°4.415.20.113.23.9
May66° / 46°2.810.3014.65.9
Jun72° / 50°1.46.3015.37.3
Jul81° / 55°0.31.80158.0
Aug82° / 55°0.42.2013.97.8
Sep76° / 51°1.44.6012.38.0
Oct64° / 44°3.810.7010.75.6
Nov52° / 39°6.816.50.29.42.3
Dec46° / 35°8.117.21.38.71.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 9% of January, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12179
22179
32179
42179
52278
62278
72278
82278
92278
102278
112278
122377
132476
142476
152476
162476
172575
182575
192575
202575
212674
222674
232674
242674
252476
262476
272476
282476
292476
302377
312377

Chance of precipitation in January

Any precipitationSnow

Corvallis gets around 6.9 in of rain and snow over 16.9 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 54% and peaks near 56% on the wettest days, and about 2 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1546
2556
3556
4557
5557
6557
7557
8567
9567
10567
11566
12566
13566
14566
15555
16555
17555
18555
19555
20545
21544
22544
23544
24534
25534
26534
27524
28524
29514
30514
31514

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January 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 January

Winds average 5 mph in January.

Across January, daily wind ranges from about 5 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
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 42 min at the start of January to 9 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 7:56 AM to 7:41 AM, and sunset from 4:37 PM to 5:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.77:564:37
28.77:564:38
38.77:564:39
48.77:564:39
58.77:564:40
68.87:564:41
78.87:554:42
88.87:554:43
98.87:554:44
108.87:554:45
118.97:554:46
128.97:544:47
138.97:544:49
148.97:544:50
159.07:534:51
169.07:534:52
179.07:524:53
189.07:524:54
199.17:514:56
209.17:504:57
219.17:504:58
229.27:494:59
239.27:485:01
249.27:485:02
259.37:475:03
269.37:465:05
279.37:455:06
289.47:445:07
299.47:435:09
309.57:425:10
319.57:415:11

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.33 kWh/m².

For context, solar energy here swings from a low near 1.12 kWh/m² to a high of 7.2 kWh/m² in July across the year — January's 1.33 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.2Dim
21.2Dim
31.2Dim
41.2Dim
51.2Dim
61.2Dim
71.2Dim
81.2Dim
91.2Dim
101.2Dim
111.2Dim
121.3Dim
131.3Dim
141.3Dim
151.3Dim
161.3Dim
171.3Dim
181.4Dim
191.4Dim
201.4Dim
211.4Dim
221.4Dim
231.5Dim
241.5Dim
251.5Dim
261.6Dim
271.6Dim
281.6Dim
291.6Dim
301.7Dim
311.7Dim
Planning a trip in January

Hazard calendar for Corvallis

In seasonPeak

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

Corvallis'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 January a good time to visit Corvallis?

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

1.3
Sightseeing
11th-best month of the year
0.0
Beach & pool
9th-best month of the year

January is a weaker month for outdoor sightseeing in Corvallis.

What to pack for Corvallis in January

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

In January, Corvallis sees daytime highs around 47°F and nights near 36°F. Pack a warm layer and rain gear. About 17 days see rain.

a warm layerrain gear

Sea temperature near Corvallis in January

The nearest coast averages about 50°F in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 43 mi away) is warmest in July at about 56°F and coldest in February near 50°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

48°50°52°54°56°58°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°F)Comfort
Jan50Bracing
Feb50Bracing
Mar50Bracing
Apr51Bracing
May54Bracing
Jun56Bracing
Jul56Bracing
Aug56Bracing
Sep56Bracing
Oct55Bracing
Nov53Bracing
Dec51Bracing

UV index in Corvallis in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Corvallis peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 16UV 8Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May8Very high
Jun7Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct4Moderate
Nov1Low
Dec1Low

Air quality in Corvallis in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Corvallis is worst in September — around 40 µg/m³ PM2.5 (poor), about 7.1× the cleanest month (January, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1537 µg/m³Jan 186 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar10Good
Apr11Good
May11Good
Jun8Good
Jul8Good
Aug16Moderate
Sep40Poor
Oct11Good
Nov11Good
Dec9Good
Location & terrain

Where is Corvallis?

Corvallis sits at 44.6°N, 123.3°W, 233 ft above sea level, in United States. The nearest listed city is Albany, 9.3 mi away.

Topography around Corvallis

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

Within 2 miles, the terrain around Corvallis has only modest variations in elevation — a maximum elevation change of 262 ft around an average of 233 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,014 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,997 ft.

The land around Corvallis is covered by trees (42%) and artificial surfaces (26%) within 2 miles, trees (47%) and cropland (31%) within 10 miles, and trees (70%) within 50 miles.

2 miles
262 ft
10 miles
2,014 ft
50 miles
4,997 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Albany 9.3 mi · Lebanon 17 mi · Dallas 25 mi · Salem 29 mi · Four Corners 29 mi · Keizer 32 mi · Hayesville 32 mi · Eugene 37 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 Corvallis (44.5646°, -123.262°, elevation 233 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).