Dallas, OR Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Dallas's primary NOAA station, DALLAS 2 NE.
The climate verdict for Dallas
Water is the standout signal in Dallas, Oregon: 47.8 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 53°F. Its climate comfort score of 68/100 (good) lands mid-pack nationally, exceeding 56% of station-mapped location scores.
- 53°F
- annual average temperature (NOAA normal)
- 68/100
- comfort score, above 56% of station-mapped location scores
- 47.8"
- precipitation, annual total
- 199 days
- frost-free days per growing season
Dallas: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00352112 · Dallas, OR 53°F mean · 47.8" 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 #3,705
- PHOTO-FINISH ≈ Eugene Mahlon S…
- PRCP-MID 47.8"
- SWING-NARROW 28°F
- COMF-MID 68/100
- LOAD-HEAT 4,633 HDD
- STN-1 USC00352112
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Eugene Mahlon Sweet, 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.
- Dallas (this station) 53°F
- Cold Corvallis State…, OR 53°F
- Hot Eugene Mahlon S…, OR 53°F
- Near Silverton, OR 53°F
- Near Mcminnville, OR 53°F
Climate Living Index · Dallas
Dallas: 71/100 · grade B
Dallas publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Dallas, 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 | 199 days/year | 64/100 · C |
| Precipitation balance | 47.8 in · 12.8 from 35 in | 55/100 · C |
| Annual temperature balance | 53.1°F · 14.4° from 67.5°F | 53/100 · D |
Dallas · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Dallas is a temperate Köppen climate: Csb
Coldest-month mean 40.1°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
- 40.1°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 Dallas sits across the climate record
Three NOAA fields for Dallas's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 54th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Top 25% wettest
- Dallas's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 93%
- Warmest-to-coldest month gap for Dallas is compact versus 6,861 complete station-years.
How Dallas compares across U.S. station-mapped locations
Dallas'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
Dallas's measured station temperature trend
MethodologyAcross 68 complete annual observations from 1937 to 2025, DALLAS 2 NE warmed at a fitted rate of 0.14°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Dallas primary station fitted change +0.14 °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 | 47°F (8°C) | 35°F (2°C) | 41°F (5°C) | 7.5" | 10.9 | 0.0 |
| February | 51°F (10°C) | 36°F (2°C) | 43°F (6°C) | 5.6" | 9.2 | 0.0 |
| March | 56°F (13°C) | 38°F (3°C) | 47°F (8°C) | 5.1" | 6.5 | 0.0 |
| April | 61°F (16°C) | 40°F (5°C) | 50°F (10°C) | 3.7" | 2.5 | 0.0 |
| May | 68°F (20°C) | 45°F (7°C) | 57°F (14°C) | 2.4" | 0.3 | 0.2 |
| June | 73°F (23°C) | 49°F (9°C) | 61°F (16°C) | 1.5" | 0.0 | 1.6 |
| July | 83°F (28°C) | 52°F (11°C) | 67°F (20°C) | 0.3" | 0.0 | 6.0 |
| August | 83°F (28°C) | 52°F (11°C) | 68°F (20°C) | 0.5" | 0.0 | 6.8 |
| September | 78°F (25°C) | 49°F (10°C) | 63°F (17°C) | 1.6" | 0.0 | 2.7 |
| October | 65°F (18°C) | 44°F (7°C) | 54°F (12°C) | 3.8" | 1.5 | 0.0 |
| November | 52°F (11°C) | 38°F (4°C) | 45°F (7°C) | 7.2" | 6.4 | 0.0 |
| December | 46°F (8°C) | 35°F (2°C) | 40°F (5°C) | 8.7" | 11.5 | 0.0 |
The year, day by day
The calendar barely moves in Dallas: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 35°F near December 16 and 85°F near July 28.
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 35°F around December 16.
The widest day
July 28 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 Dallas.
Monthly Precipitation
Average monthly rainfall
Dallas's wet season runs through the cold months
December, January and February carry 46% 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 27.5°F seasonal spread.
- Wettest month
- December, 8.7"
- Driest month
- July, 0.3"
- Wettest three months
- December, January, November (49% 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.
Frost Dates & Growing Season
First Fall Freeze
November 1
50% probability date
Last Spring Freeze
April 16
50% probability date
Growing Season
199 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,633
Higher = more heating needed
Cooling Degree Days
294
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Dallas 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).
- Allentown, PA 53°F · 0.0°F off
- Danville, IL 53°F · 0.0°F off
- Decatur, IL 53°F · 0.0°F off
- Downieville, CA 53°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (47.8" here), excluding temperature-peer places.
- Reidsville, NC 47.8" · 0.0" off
- Wadesboro, NC 47.8" · 0.0" off
- Fairmont, WV 47.8" · 0.0" off
- Greenfield, IN 47.8" · 0.0" off
Data-derived climate profile
How Dallas's climate pattern fits together
heating led · wet · low swing
Heating is the larger measured load in Dallas, at 4,633 degree days versus 294 for cooling. Unlike a strongly continental record, however, its 27.5°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Dallas's frost-free season lasts about 199 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
Dallas's 27.5°F seasonal spread is compact even though precipitation is abundant. August and December mark the typical warm and cold ends of the calendar. The annual average is 53°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
Alongside its heating load, Dallas carries 47.8 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 Dallas'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 Dallas, not an official NOAA class or a year-ahead forecast.
Questions about Dallas's climate
How much rain does Dallas get? ▼
How much energy does heating and cooling require in Dallas? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Dallas's primary station: DALLAS 2 NE (USC00352112). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 4117700). Match rule for Dallas: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Dallas 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.