Aurora State, OR Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Aurora State's primary NOAA station, AURORA STATE AP.
The climate verdict for Aurora State
A compact 28°F seasonal swing gives Aurora State, Oregon a steadier-than-extreme annual shape. NOAA reports an annual average of 55°F. Its climate comfort score of 73/100 (good) lands mid-pack nationally, exceeding 66% of station-mapped location scores.
- 55°F
- average temperature, NOAA 1991-2020 normal
- 73/100
- comfort score, above 66% of station-mapped location scores
- 39.5"
- annual precipitation
- 243 days
- frost-free days per growing season
Aurora State: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00094281 · Aurora State, OR 55°F mean · 39.5" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-NARROW · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 55°F
- RANK-MID #4,048
- PHOTO-FINISH ≈ Portland Kgw-tv
- PRCP-MID 39.5"
- SWING-NARROW 28°F
- COMF-MID 73/100
- LOAD-HEAT 4,162 HDD
- STN-1 USW00094281
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Portland Kgw-tv, 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.
- Aurora State (this station) 55°F
- Cold Portland Kgw-tv, OR 55°F
- Hot Lebanon, OR 55°F
- Near Portland Troutd…, OR 55°F
- Near Winchester, OR 55°F
Climate Living Index · Aurora State
Aurora State: 81/100 · grade B
Aurora State publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Aurora State, 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 |
| Frost-free season | 243 days/year | 86/100 · A |
| Precipitation balance | 39.5 in · 4.5 from 35 in | 84/100 · B |
| Annual temperature balance | 54.8°F · 12.7° from 67.5°F | 59/100 · C |
Aurora State · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Aurora State is a temperate Köppen climate: Csb
Coldest-month mean 41.8°F and warmest-month mean 69.8°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
- 69.8°F
- Coldest month
- 41.8°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 Aurora State sits across the climate record
Three NOAA fields for Aurora State's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 59th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 57th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 93%
- Warmest-to-coldest month gap for Aurora State is compact versus 6,861 complete station-years.
How Aurora State compares across U.S. station-mapped locations
Aurora State'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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 49°F (9°C) | 36°F (2°C) | 42°F (6°C) | 5.5" | 10.0 | 0.0 |
| February | 53°F (11°C) | 37°F (3°C) | 45°F (7°C) | 4.0" | 7.5 | 0.0 |
| March | 57°F (14°C) | 39°F (4°C) | 48°F (9°C) | 4.4" | 3.7 | 0.0 |
| April | 62°F (17°C) | 43°F (6°C) | 52°F (11°C) | 3.4" | 0.5 | 0.0 |
| May | 69°F (21°C) | 48°F (9°C) | 59°F (15°C) | 2.5" | 0.0 | 0.5 |
| June | 75°F (24°C) | 52°F (11°C) | 63°F (17°C) | 1.5" | 0.0 | 1.8 |
| July | 83°F (28°C) | 56°F (13°C) | 70°F (21°C) | 0.4" | 0.0 | 6.7 |
| August | 83°F (29°C) | 56°F (13°C) | 70°F (21°C) | 0.5" | 0.0 | 6.4 |
| September | 77°F (25°C) | 52°F (11°C) | 65°F (18°C) | 1.6" | 0.0 | 2.4 |
| October | 64°F (18°C) | 46°F (8°C) | 55°F (13°C) | 3.7" | 0.6 | 0.0 |
| November | 54°F (12°C) | 40°F (4°C) | 47°F (8°C) | 5.8" | 5.3 | 0.0 |
| December | 48°F (9°C) | 36°F (2°C) | 42°F (5°C) | 6.2" | 11.0 | 0.0 |
The year, day by day
The calendar barely moves in Aurora State: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 36°F near December 18 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 36°F around December 18.
Where the wet dates fall
The likeliest wet date is December 22, when 67% of years recorded at least a hundredth of an inch. The driest is July 28 at 9%. Summed across the calendar, that is about 166 wet dates a year.
The widest day
July 20 carries the biggest normal gap between afternoon and dawn, 28°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Aurora State.
Monthly Precipitation
Average monthly rainfall
20.3 days with precipitation
17.4 days with precipitation
19.2 days with precipitation
16.7 days with precipitation
13.3 days with precipitation
8.7 days with precipitation
3.0 days with precipitation
3.5 days with precipitation
7.6 days with precipitation
15.3 days with precipitation
20.3 days with precipitation
20.2 days with precipitation
Aurora State's wet season runs through the cold months
December, January and February carry 40% 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 28°F seasonal spread.
- Wettest month
- December, 6.2"
- Driest month
- July, 0.4"
- Wettest three months
- December, November, January (44% 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 Aurora State's precipitation splits across the calendar
About 166 days a year record measurable precipitation here, carrying 39.5" between them, or roughly 0.24 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
November 14
50% probability date
Last Spring Freeze
March 16
50% probability date
Growing Season
243 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,162
Higher = more heating needed
Cooling Degree Days
455
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Aurora State 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 (55°F here).
- Courtland, KS 55°F · 0.0°F off
- Cynthiana, KY 55°F · 0.0°F off
- Free Union, VA 55°F · 0.0°F off
- Greensburg, KS 55°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (39.5" here), excluding temperature-peer places.
- Woodstock, VA 39.5" · 0.0" off
- Hillsdale, MI 39.5" · 0.0" off
- Gouverneur, NY 39.6" · 0.0" off
- Reedsburg, WI 39.6" · 0.0" off
Data-derived climate profile
How Aurora State's climate pattern fits together
heating led · moderate · low swing
Heating is the larger measured load in Aurora State, at 4,162 degree days versus 455 for cooling. Unlike a strongly continental record, however, its 28.0°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
The frost-free window extends for about 243 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
Temperature varies within a narrow 28.0°F band across the normal year. August and December mark the typical warm and cold ends of the calendar. The annual average is 55°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
Aurora State's 39.5 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Aurora State'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 Aurora State, not an official NOAA class or a year-ahead forecast.
Questions about Aurora State's climate
How much rain does Aurora State get? ▼
How much energy does heating and cooling require in Aurora State? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Aurora State's primary station: AURORA STATE AP (USW00094281). 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 Aurora State; 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 Aurora State 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.