Dorena, 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 Dorena's primary NOAA station, DORENA.
The climate verdict for Dorena
Water is the standout signal in Dorena, Oregon: 46.5 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 52°F. Its climate comfort score of 68/100 (good) lands mid-pack nationally, exceeding 56% of station-mapped location scores.
- 52°F
- yearly average temperature, NOAA normal
- 68/100
- comfort score, above 56% of station-mapped location scores
- 46.5"
- yearly precipitation total
- 195 days
- frost-free growing season
Dorena: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00352374 · Dorena, OR 52°F mean · 46.5" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-NARROW · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 52°F
- RANK-MID #3,362
- PHOTO-FINISH ≈ Fern Ridge-vene…
- PRCP-MID 46.5"
- SWING-NARROW 26°F
- COMF-MID 68/100
- LOAD-HEAT 4,933 HDD
- STN-1 USC00352374
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Fern Ridge-veneta, OR (+ 0.1 °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.
- Dorena (this station) 52°F
- Hot Cottage Grove, OR 52°F
- Near Fern Ridge-vene…, OR 52°F
- Near Cottage Grove D…, OR 52°F
- Near Corvallis, OR 52°F
Climate Living Index · Dorena
Dorena: 70/100 · grade B
Dorena publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Dorena, not an official NOAA rating. Rankings still use Comfort Score 68/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Frost-free season | 195 days/year | 61/100 · C |
| Precipitation balance | 46.5 in · 11.5 from 35 in | 59/100 · C |
| Annual temperature balance | 52.0°F · 15.5° from 67.5°F | 49/100 · D |
Dorena · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Dorena is a temperate Köppen climate: Csb
Coldest-month mean 39.9°F and warmest-month mean 66.0°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
- 66.0°F
- Coldest month
- 39.9°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 Dorena sits across the climate record
Three NOAA fields for Dorena's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 49th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 28% wettest
- Dorena's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 94%
- Warmest-to-coldest month gap for Dorena is compact versus 6,861 complete station-years.
How Dorena compares across U.S. station-mapped locations
Dorena's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
68 Top 44% score exceeds 56% 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%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 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
Dorena's measured station temperature trend
MethodologyAcross 49 complete annual observations from 1951 to 2023, DORENA warmed at a fitted rate of 0.16°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Dorena primary station fitted change +0.16 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 48°F (9°C) | 34°F (1°C) | 41°F (5°C) | 6.2" | 12.8 | 0.0 |
| February | 51°F (11°C) | 34°F (1°C) | 43°F (6°C) | 4.7" | 12.6 | 0.0 |
| March | 56°F (13°C) | 36°F (2°C) | 46°F (8°C) | 5.6" | 8.9 | 0.0 |
| April | 60°F (15°C) | 39°F (4°C) | 49°F (10°C) | 4.5" | 3.7 | 0.0 |
| May | 67°F (19°C) | 44°F (7°C) | 55°F (13°C) | 3.5" | 1.0 | 0.3 |
| June | 72°F (22°C) | 48°F (9°C) | 60°F (15°C) | 2.1" | 0.1 | 1.1 |
| July | 81°F (27°C) | 51°F (11°C) | 66°F (19°C) | 0.4" | 0.0 | 5.6 |
| August | 82°F (28°C) | 50°F (10°C) | 66°F (19°C) | 0.6" | 0.0 | 5.6 |
| September | 76°F (24°C) | 46°F (8°C) | 61°F (16°C) | 1.8" | 0.1 | 2.0 |
| October | 64°F (18°C) | 42°F (5°C) | 53°F (11°C) | 3.8" | 2.2 | 0.2 |
| November | 53°F (11°C) | 38°F (3°C) | 45°F (7°C) | 6.5" | 7.2 | 0.0 |
| December | 46°F (8°C) | 34°F (1°C) | 40°F (4°C) | 7.2" | 13.7 | 0.0 |
The year, day by day
The calendar barely moves in Dorena: 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 84°F near July 27.
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 6, when 65% of years recorded at least a hundredth of an inch. The driest is July 27 at 6%. Summed across the calendar, that is about 147 wet dates a year.
The widest day
August 2 carries the biggest normal gap between afternoon and dawn, 32°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Dorena.
Monthly Precipitation
Average monthly rainfall
19.8 days with precipitation
16.0 days with precipitation
18.2 days with precipitation
16.5 days with precipitation
11.8 days with precipitation
6.0 days with precipitation
1.8 days with precipitation
2.5 days with precipitation
4.3 days with precipitation
12.1 days with precipitation
18.0 days with precipitation
19.7 days with precipitation
Dorena's wet season runs through the cold months
December, January and February carry 39% of the year's precipitation here, while June through August contribute 6%. 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 26.1°F seasonal spread.
- Wettest month
- December, 7.2"
- Driest month
- July, 0.4"
- Wettest three months
- December, November, January (43% 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 Dorena's precipitation splits across the calendar
About 147 days a year record measurable precipitation here, carrying 46.5" between them, or roughly 0.32 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.
Frost Dates & Growing Season
First Fall Freeze
October 28
50% probability date
Last Spring Freeze
April 16
50% probability date
Growing Season
195 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,933
Higher = more heating needed
Cooling Degree Days
200
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Dorena 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 (52°F here).
- Arapahoe, CO 52°F · 0.0°F off
- Athens, IL 52°F · 0.0°F off
- Congerville, IL 52°F · 0.0°F off
- Farmington, UT 52°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (46.5" here), excluding temperature-peer places.
- Manteo, NC 46.5" · 0.0" off
- Mound Valley, KS 46.5" · 0.0" off
- Newberry, SC 46.5" · 0.0" off
- Cavendish, VT 46.5" · 0.0" off
Data-derived climate profile
How Dorena's climate pattern fits together
heating led · wet · low swing
Heating is the larger measured load in Dorena, at 4,933 degree days versus 200 for cooling. Unlike a strongly continental record, however, its 26.1°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Dorena's frost-free season lasts about 195 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
Dorena's 26.1°F seasonal spread is compact even though precipitation is abundant. July and December mark the typical warm and cold ends of the calendar. The annual average is 52°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
Alongside its heating load, Dorena carries 46.5 inches of precipitation in a normal year, inside PlainClimate's wet range. Snowfall is not added to the interpretation because its annual value is missing. That distinction matters because a wet annual total can arrive as rain, snow, or a mixture at different times.
These labels group NOAA 1991-2020 normals from Dorena'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 Dorena, not an official NOAA class or a year-ahead forecast.
Questions about Dorena's climate
How much rain does Dorena get? ▼
How much energy does heating and cooling require in Dorena? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Dorena's primary station: DORENA (USC00352374). 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 Dorena; 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 Dorena 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.