Renton Muni, WA 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 Renton Muni's primary NOAA station, RENTON MUNI AP.
The climate verdict for Renton Muni
A compact 25.7°F seasonal swing gives Renton Muni, Washington a steadier-than-extreme annual shape. NOAA reports an annual average of 54°F. Its climate comfort score of 73/100 (good) lands mid-pack nationally, exceeding 66% of station-mapped location scores.
- 54°F
- annual average temperature (NOAA normal)
- 73/100
- comfort score, above 66% of station-mapped location scores
- 34.7"
- yearly precipitation total
- 248 days
- frost-free days per growing season
Renton Muni: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00094248 · Renton Muni, WA 54°F mean · 34.7" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-NARROW · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 54°F
- RANK-MID #3,774
- PHOTO-FINISH ≈ Seattle
- PRCP-MID 34.7"
- SWING-NARROW 26°F
- COMF-MID 73/100
- LOAD-HEAT 4,390 HDD
- STN-1 USW00094248
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Seattle, WA (+ 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 WA station list.
- Renton (this station) 54°F
- Hot Seattle Boeing…, WA 54°F
- Near Seattle, WA 54°F
- Near Tacoma, WA 54°F
- Near Kent, WA 54°F
Climate Living Index · Renton Muni
Renton Muni: 82/100 · grade B
Renton Muni publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Renton Muni, 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 |
| Precipitation balance | 34.7 in · 0.3 from 35 in | 95/100 · A |
| Frost-free season | 248 days/year | 88/100 · A |
| Annual temperature balance | 53.6°F · 13.9° from 67.5°F | 55/100 · C |
Renton Muni · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Renton Muni is a temperate Köppen climate: Csb
Coldest-month mean 41.8°F and warmest-month mean 67.5°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
- 67.5°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 Renton Muni sits across the climate record
Three NOAA fields for Renton Muni's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 55th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 47th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 94%
- Warmest-to-coldest month gap for Renton Muni is compact versus 6,861 complete station-years.
How Renton Muni compares across U.S. station-mapped locations
Renton Muni'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 | 48°F (9°C) | 37°F (3°C) | 43°F (6°C) | 4.9" | 7.4 | 0.0 |
| February | 50°F (10°C) | 37°F (3°C) | 44°F (6°C) | 3.2" | 7.1 | 0.0 |
| March | 55°F (13°C) | 40°F (4°C) | 47°F (8°C) | 3.7" | 3.1 | 0.0 |
| April | 60°F (15°C) | 43°F (6°C) | 51°F (11°C) | 2.8" | 0.2 | 0.0 |
| May | 66°F (19°C) | 49°F (9°C) | 58°F (14°C) | 1.9" | 0.0 | 0.1 |
| June | 71°F (22°C) | 54°F (12°C) | 62°F (17°C) | 1.5" | 0.0 | 0.5 |
| July | 77°F (25°C) | 58°F (14°C) | 67°F (20°C) | 0.6" | 0.0 | 1.7 |
| August | 78°F (25°C) | 57°F (14°C) | 68°F (20°C) | 0.9" | 0.0 | 1.4 |
| September | 72°F (22°C) | 53°F (12°C) | 62°F (17°C) | 1.5" | 0.0 | 0.1 |
| October | 61°F (16°C) | 46°F (8°C) | 54°F (12°C) | 3.5" | 0.4 | 0.0 |
| November | 52°F (11°C) | 40°F (5°C) | 46°F (8°C) | 5.6" | 4.3 | 0.0 |
| December | 47°F (8°C) | 37°F (3°C) | 42°F (5°C) | 4.5" | 7.9 | 0.0 |
The year, day by day
The calendar barely moves in Renton Muni: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 36°F near December 16 and 79°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 36°F around December 16.
Where the wet dates fall
The likeliest wet date is January 5, when 59% of years recorded at least a hundredth of an inch. The driest is July 31 at 13%. Summed across the calendar, that is about 154 wet dates a year.
The widest day
August 10 carries the biggest normal gap between afternoon and dawn, 20°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Renton Muni.
Where Renton Muni Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 20°F.
Renton Muni 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
18.2 days with precipitation
15.8 days with precipitation
17.6 days with precipitation
14.4 days with precipitation
11.2 days with precipitation
9.2 days with precipitation
4.3 days with precipitation
4.6 days with precipitation
9.0 days with precipitation
14.7 days with precipitation
17.1 days with precipitation
17.3 days with precipitation
Renton Muni's wet season runs through the cold months
December, January and February carry 37% of the year's precipitation here, while June through August contribute 9%. 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 25.7°F seasonal spread.
- Wettest month
- November, 5.6"
- Driest month
- July, 0.6"
- Wettest three months
- November, January, December (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 Renton Muni's precipitation splits across the calendar
About 153 days a year record measurable precipitation here, carrying 34.7" between them, or roughly 0.23 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 16
50% probability date
Last Spring Freeze
March 13
50% probability date
Growing Season
248 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,390
Higher = more heating needed
Cooling Degree Days
258
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside WA closest to Renton Muni 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 (54°F here).
- Bonner Springs, KS 54°F · 0.0°F off
- Brookfield, MO 54°F · 0.0°F off
- Capitan, NM 54°F · 0.0°F off
- Fairfield, OH 54°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (34.7" here), excluding temperature-peer places.
- Chelsea, MI 34.7" · 0.0" off
- New Hope, MN 34.7" · 0.0" off
- Sheboygan, WI 34.7" · 0.0" off
- Rochester, MN 34.7" · 0.0" off
Data-derived climate profile
How Renton Muni's climate pattern fits together
heating led · moderate · low swing
Heating is the larger measured load in Renton Muni, at 4,390 degree days versus 258 for cooling. Unlike a strongly continental record, however, its 25.7°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 248 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 25.7°F band across the normal year. August and December mark the typical warm and cold ends of the calendar. The annual average is 54°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
Renton Muni's 34.7 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 Renton Muni'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 Renton Muni, not an official NOAA class or a year-ahead forecast.
Questions about Renton Muni's climate
How much rain does Renton Muni get? ▼
How much energy does heating and cooling require in Renton Muni? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Renton Muni's primary station: RENTON MUNI AP (USW00094248). 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 Renton Muni; 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 Renton Muni 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.