Portland Kgw-tv, OR Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Portland Kgw-tv's primary NOAA station, PORTLAND KGW-TV.
The climate verdict for Portland Kgw-tv
A compact 28°F seasonal swing gives Portland Kgw-tv, Oregon a steadier-than-extreme annual shape. NOAA reports an annual average of 55°F. It scores 77/100 for climate comfort (good), putting it in the top third of station-mapped location scores and exceeding 70% of them.
- 55°F
- yearly average temperature, NOAA normal
- 77/100
- comfort score, above 70% of station-mapped location scores
- 44.1"
- annual precipitation · 4" snow
- 279 days
- growing season, frost-free days
Portland Kgw-tv: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00356749 · Portland Kgw-tv, OR 55°F mean · 44.1" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-NARROW · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 55°F
- RANK-MID #4,048
- PHOTO-FINISH ≈ Portland Troutd…
- PRCP-MID 44.1"
- SWING-NARROW 28°F
- COMF-TOP 77/100
- LOAD-HEAT 4,167 HDD
- STN-1 USC00356749
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Portland Troutdale, 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.
- Portland Kgw-tv (this station) 55°F
- Hot Lebanon, OR 55°F
- Near Portland Troutd…, OR 55°F
- Near Aurora State, OR 55°F
- Near Winchester, OR 55°F
Climate Living Index · Portland Kgw-tv
Portland Kgw-tv: 78/100 · grade B
Portland Kgw-tv publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Portland Kgw-tv, not an official NOAA rating. Rankings still use Comfort Score 77/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Frost-free season | 279 days/year | 97/100 · A |
| Snowfall burden | 3.6 inches/year | 73/100 · B |
| Precipitation balance | 44.1 in · 9.1 from 35 in | 68/100 · C |
| Annual temperature balance | 54.7°F · 12.8° from 67.5°F | 58/100 · C |
Portland Kgw-tv · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Portland Kgw-tv is a temperate Köppen climate: Csb
Coldest-month mean 41.6°F and warmest-month mean 69.6°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
- 69.6°F
- Coldest month
- 41.6°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 Portland Kgw-tv sits across the climate record
Three NOAA fields for Portland Kgw-tv'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
- 66th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 93%
- Warmest-to-coldest month gap for Portland Kgw-tv is compact versus 6,861 complete station-years.
How Portland Kgw-tv compares across U.S. station-mapped locations
Portland Kgw-tv's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
77 Top 30% score exceeds 70% 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
Portland Kgw-tv's measured station temperature trend
MethodologyAcross 44 complete annual observations from 1974 to 2025, PORTLAND KGW-TV warmed at a fitted rate of 0.21°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Portland Kgw-tv primary station fitted change +0.21 °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 (8°C) | 37°F (3°C) | 42°F (6°C) | 6.4" | 1.3" | 5.4 | 0.0 |
| February | 51°F (10°C) | 39°F (4°C) | 45°F (7°C) | 4.7" | 1.4" | 3.6 | 0.0 |
| March | 56°F (13°C) | 41°F (5°C) | 48°F (9°C) | 4.8" | 0.0" | 1.0 | 0.0 |
| April | 61°F (16°C) | 44°F (7°C) | 53°F (11°C) | 3.6" | 0.0" | 0.0 | 0.0 |
| May | 68°F (20°C) | 49°F (10°C) | 59°F (15°C) | 2.6" | 0.0" | 0.0 | 0.5 |
| June | 73°F (23°C) | 53°F (12°C) | 63°F (17°C) | 1.5" | 0.0" | 0.0 | 1.3 |
| July | 80°F (27°C) | 58°F (14°C) | 69°F (21°C) | 0.4" | 0.0" | 0.0 | 3.8 |
| August | 81°F (27°C) | 59°F (15°C) | 70°F (21°C) | 0.5" | 0.0" | 0.0 | 4.1 |
| September | 75°F (24°C) | 55°F (13°C) | 65°F (18°C) | 1.6" | 0.0" | 0.0 | 1.4 |
| October | 63°F (17°C) | 48°F (9°C) | 55°F (13°C) | 4.0" | 0.0" | 0.1 | 0.0 |
| November | 52°F (11°C) | 42°F (5°C) | 47°F (8°C) | 6.6" | 0.0" | 2.1 | 0.0 |
| December | 46°F (8°C) | 37°F (3°C) | 42°F (5°C) | 7.3" | 0.9" | 5.4 | 0.0 |
The year, day by day
The calendar barely moves in Portland Kgw-tv: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 37°F near December 26 and 82°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 37°F around December 26.
Where the wet dates fall
The likeliest wet date is December 21, when 64% of years recorded at least a hundredth of an inch. The driest is July 30 at 8%. Summed across the calendar, that is about 155 wet dates a year.
The widest day
July 23 carries the biggest normal gap between afternoon and dawn, 23°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Portland Kgw-tv.
Where Portland Kgw-tv Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 23°F, is narrower than most stations record.
Portland Kgw-tv 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: 1.3"
19.5 days with precipitation
Snow: 1.4"
15.6 days with precipitation
17.7 days with precipitation
16.9 days with precipitation
12.1 days with precipitation
8.7 days with precipitation
3.1 days with precipitation
3.3 days with precipitation
6.7 days with precipitation
12.8 days with precipitation
18.6 days with precipitation
Snow: 0.9"
19.7 days with precipitation
Portland Kgw-tv's wet season runs through the cold months
December, January and February carry 42% 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, 7.3"
- Driest month
- July, 0.4"
- Wettest three months
- December, November, January (46% 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 Portland Kgw-tv's precipitation splits across the calendar
About 155 days a year record measurable precipitation here, carrying 44.1" between them, or roughly 0.28 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 Portland Kgw-tv, but rarely amounts to much
The normals record 3.6 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
December 1
50% probability date
Last Spring Freeze
February 25
50% probability date
Growing Season
279 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,167
Higher = more heating needed
Cooling Degree Days
448
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Portland Kgw-tv 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).
- Abingdon, VA 55°F · 0.0°F off
- Cottonwood Falls, KS 55°F · 0.0°F off
- Cranford, NJ 55°F · 0.0°F off
- Ellsworth, KS 55°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (44.1" here), excluding temperature-peer places.
- Ava, MO 44.1" · 0.0" off
- Hiram, OH 44.1" · 0.0" off
- Washington, MO 44.1" · 0.0" off
- Hanover, PA 44.1" · 0.0" off
Data-derived climate profile
How Portland Kgw-tv's climate pattern fits together
heating led · moderate · low swing
Heating is the larger measured load in Portland Kgw-tv, at 4,167 degree days versus 448 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 279 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.
Portland Kgw-tv's 44.1 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Annual snowfall totals 3.6 inches. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Portland Kgw-tv'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 Portland Kgw-tv, not an official NOAA class or a year-ahead forecast.
Questions about Portland Kgw-tv's climate
How much rain does Portland Kgw-tv get? ▼
How much energy does heating and cooling require in Portland Kgw-tv? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Portland Kgw-tv's primary station: PORTLAND KGW-TV (USC00356749). 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 Portland Kgw-tv; 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 Portland Kgw-tv 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.