Corvallis State Univ, OR Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Corvallis State Univ's primary NOAA station, CORVALLIS STATE UNIV.
The climate verdict for Corvallis State Univ
A compact 27.3°F seasonal swing gives Corvallis State Univ, Oregon a steadier-than-extreme annual shape. NOAA reports an annual average of 53°F. Its climate comfort score of 73/100 (good) lands mid-pack nationally, exceeding 66% of station-mapped location scores.
- 53°F
- yearly average temperature, NOAA normal
- 73/100
- comfort score, above 66% of station-mapped location scores
- 43.0"
- annual precipitation · 3" snow
- 194 days
- growing season, frost-free days
Corvallis State Univ: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00351862 · Corvallis State Univ, OR 53°F mean · 43.0" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-NARROW · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 53°F
- RANK-MID #3,636
- PHOTO-FINISH ≈ Mcminnville
- PRCP-MID 43.0"
- SWING-NARROW 27°F
- COMF-MID 73/100
- LOAD-HEAT 4,670 HDD
- STN-1 USC00351862
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Mcminnville Muni, OR (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every OR station list.
- Corvallis State… (this station) 53°F
- Hot Eugene Mahlon S…, OR 53°F
- Near Mcminnville, OR 53°F
- Near Silverton, OR 53°F
- Near Dallas, OR 53°F
Climate Living Index · Corvallis State Univ
Corvallis State Univ: 73/100 · grade B
Corvallis State Univ publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Corvallis State Univ, not an official NOAA rating. Rankings still use Comfort Score 73/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Snowfall burden | 2.9 inches/year | 74/100 · B |
| Precipitation balance | 43.0 in · 8.0 from 35 in | 72/100 · B |
| Frost-free season | 194 days/year | 60/100 · C |
| Annual temperature balance | 52.9°F · 14.6° from 67.5°F | 52/100 · D |
Corvallis State Univ · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Corvallis State Univ is a temperate Köppen climate: Csb
Coldest-month mean 40.3°F and warmest-month mean 67.6°F place this station in temperate, dry-summer, warm summer climates (Csb). Class Csb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, dry-summer, warm summer.
- Köppen code
- Csb
- Group
- Temperate
- Warmest month
- 67.6°F
- Coldest month
- 40.3°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Corvallis State Univ sits across the climate record
Three NOAA fields for Corvallis State Univ's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 53rd percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 64th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 93%
- Warmest-to-coldest month gap for Corvallis State Univ is compact versus 6,861 complete station-years.
How Corvallis State Univ compares across U.S. station-mapped locations
Corvallis State Univ's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
73 Top 34% score exceeds 66% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). This entry sits in this band.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Corvallis State Univ's measured station temperature trend
MethodologyAcross 108 complete annual observations from 1891 to 2024, CORVALLIS STATE UNIV warmed at a fitted rate of 0.09°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Corvallis State Univ primary station fitted change +0.09 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 47°F (9°C) | 34°F (1°C) | 41°F (5°C) | 6.5" | 0.5" | 11.9 | 0.0 |
| February | 51°F (11°C) | 35°F (2°C) | 43°F (6°C) | 4.8" | 1.6" | 10.5 | 0.0 |
| March | 56°F (13°C) | 37°F (3°C) | 47°F (8°C) | 5.0" | 0.1" | 6.8 | 0.0 |
| April | 61°F (16°C) | 40°F (4°C) | 50°F (10°C) | 3.3" | 0.0" | 2.7 | 0.0 |
| May | 68°F (20°C) | 45°F (7°C) | 56°F (13°C) | 2.3" | 0.0" | 0.4 | 0.2 |
| June | 74°F (23°C) | 49°F (9°C) | 61°F (16°C) | 1.3" | 0.0" | 0.0 | 1.5 |
| July | 83°F (28°C) | 52°F (11°C) | 68°F (20°C) | 0.3" | 0.0" | 0.0 | 6.7 |
| August | 84°F (29°C) | 51°F (11°C) | 68°F (20°C) | 0.4" | 0.0" | 0.0 | 6.9 |
| September | 78°F (25°C) | 48°F (9°C) | 63°F (17°C) | 1.5" | 0.0" | 0.0 | 2.6 |
| October | 65°F (18°C) | 42°F (6°C) | 54°F (12°C) | 3.5" | 0.0" | 1.9 | 0.0 |
| November | 53°F (12°C) | 38°F (3°C) | 45°F (7°C) | 6.5" | 0.0" | 7.1 | 0.0 |
| December | 47°F (8°C) | 34°F (1°C) | 40°F (5°C) | 7.7" | 0.7" | 12.8 | 0.0 |
The year, day by day
The calendar barely moves in Corvallis State Univ: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 33°F near December 20 and 85°F near July 29.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 33°F around December 20.
Where the wet dates fall
The likeliest wet date is December 1, when 71% of years recorded at least a hundredth of an inch. The driest is July 27 at 8%. Summed across the calendar, that is about 168 wet dates a year.
The widest day
August 1 carries the biggest normal gap between afternoon and dawn, 33°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Corvallis State Univ.
Where Corvallis State Univ Stands Nationally
Daily temperature swings run wider than most of the country, peaking near 33°F between the normal high and low.
Corvallis State Univ earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 0.5"
21.1 days with precipitation
Snow: 1.6"
17.7 days with precipitation
Snow: 0.1"
19.8 days with precipitation
17.7 days with precipitation
12.9 days with precipitation
8.2 days with precipitation
2.6 days with precipitation
3.2 days with precipitation
7.0 days with precipitation
14.8 days with precipitation
20.6 days with precipitation
Snow: 0.7"
21.9 days with precipitation
Corvallis State Univ's wet season runs through the cold months
December, January and February carry 44% of the year's precipitation here, while June through August contribute 5%. That is the cool-season-dominant pattern of the West Coast and the higher inland West, where storm tracks swing south in winter and summer turns dry; the thermometer meanwhile shows an unusually narrow 27.3°F seasonal spread.
- Wettest month
- December, 7.7"
- Driest month
- July, 0.3"
- Wettest three months
- December, January, November (48% of the year)
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A cool-season label means the December-February share reaches 35%. Where snow falls, the monthly figures above report liquid-equivalent precipitation, so a wet winter month is not necessarily a rainy one.
How Corvallis State Univ's precipitation splits across the calendar
About 168 days a year record measurable precipitation here, carrying 43.0" between them, or roughly 0.26 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Snow reaches Corvallis State Univ, but rarely amounts to much
The normals record 2.9 inches of snow a year here, most likely in February. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 2 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
October 28
50% probability date
Last Spring Freeze
April 17
50% probability date
Growing Season
194 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,670
Higher = more heating needed
Cooling Degree Days
291
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Corvallis State Univ on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (53°F here).
- Chambersburg, PA 53°F · 0.0°F off
- Concordia, KS 53°F · 0.0°F off
- Harrisville, WV 53°F · 0.0°F off
- Monroe City, MO 53°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (43.0" here), excluding temperature-peer places.
- Pierce, ID 43.1" · 0.0" off
- Ravenna, OH 43.1" · 0.0" off
- Waynesburg, PA 43.1" · 0.0" off
- Limestone, ME 43.1" · 0.0" off
Data-derived climate profile
How Corvallis State Univ's climate pattern fits together
heating led · moderate · low swing
Heating is the larger measured load in Corvallis State Univ, at 4,670 degree days versus 291 for cooling. Unlike a strongly continental record, however, its 27.3°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Corvallis State Univ's frost-free season lasts about 194 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
Temperature varies within a narrow 27.3°F band across the normal year. August and December mark the typical warm and cold ends of the calendar. The annual average is 53°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
Corvallis State Univ's 43.0 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Annual snowfall totals 2.9 inches. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Corvallis State Univ's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Corvallis State Univ, not an official NOAA class or a year-ahead forecast.
Questions about Corvallis State Univ's climate
How much rain does Corvallis State Univ get? ▼
How much energy does heating and cooling require in Corvallis State Univ? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Corvallis State Univ's primary station: CORVALLIS STATE UNIV (USC00351862). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Corvallis State Univ; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Corvallis State Univ comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.