Juneau Dwtn, AK Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Juneau Dwtn's primary NOAA station, JUNEAU DWTN.
The climate verdict for Juneau Dwtn
Water is the standout signal in Juneau Dwtn, Alaska: 89.6 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 44°F. At 33/100 (below average) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 2% of scores.
- 44°F
- average temperature, NOAA 1991-2020 normal
- 33/100
- comfort score, above 2% of station-mapped location scores
- 89.6"
- yearly precipitation total
- 185 days
- frost-free days per growing season
Juneau Dwtn: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00504094 · Juneau Dwtn, AK 44°F mean · 89.6" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-WET · SWING-NARROW · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 44°F
- RANK-COOL #892
- PHOTO-FINISH ≈ Guffey
- PRCP-WET 89.6"
- SWING-NARROW 27°F
- COMF-LOW 33/100
- LOAD-HEAT 7,827 HDD
- STN-1 USC00504094
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Guffey, CO (+ 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 AK station list.
- Juneau Dwtn (this station) 44°F
- Hot Vallecito Dam, CO 44°F
- Near Guffey, CO 44°F
- Cold Sitka, AK 43°F
- Near Tahoma, CA 43°F
Juneau Dwtn sits in Alaska, the #1 coldest U.S. state at 33.5°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · Juneau Dwtn
Juneau Dwtn: 30/100 · grade F
Juneau Dwtn publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Juneau Dwtn, not an official NOAA rating. Rankings still use Comfort Score 33/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 185 days/year | 54/100 · D |
| Normal heat + freeze calendar | 138 calendar days | 54/100 · D |
| Annual temperature balance | 43.5°F · 24.0° from 67.5°F | 14/100 · F |
| Precipitation balance | 89.6 in · 54.6 from 35 in | 0/100 · F |
Juneau Dwtn · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Juneau Dwtn is a continental Köppen climate: Dfb
Coldest-month mean 30.3°F and warmest-month mean 57.3°F place this station in continental, no dry season, warm summer climates (Dfb). Class Dfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, warm summer.
- Köppen code
- Dfb
- Group
- Continental
- Warmest month
- 57.3°F
- Coldest month
- 30.3°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 Juneau Dwtn sits across the climate record
Three NOAA fields for Juneau Dwtn's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 87%
- Among 6,861 stations, Juneau Dwtn sits in the cooler third of annual means.
- Annual precipitation
- Top 1% wettest
- Juneau Dwtn'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 Juneau Dwtn is compact versus 6,861 complete station-years.
How Juneau Dwtn compares across U.S. station-mapped locations
Juneau Dwtn's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
33 2nd percentile score exceeds 2% 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%). This entry sits in this band.
- 40–50: 1,113 station-mapped locations (18%). Above this entry.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 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
Juneau Dwtn's measured station temperature trend
MethodologyAcross 79 complete annual observations from 1890 to 2020, JUNEAU DWTN warmed at a fitted rate of 0.13°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Juneau Dwtn primary station fitted change +0.13 °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 | 34°F (1°C) | 27°F (-3°C) | 30°F (-1°C) | 5.9" | 21.5 | 0.0 |
| February | 37°F (3°C) | 28°F (-2°C) | 32°F (0°C) | 5.2" | 18.8 | 0.0 |
| March | 39°F (4°C) | 30°F (-1°C) | 35°F (1°C) | 6.2" | 20.1 | 0.0 |
| April | 49°F (9°C) | 36°F (2°C) | 42°F (6°C) | 4.8" | 6.2 | 0.0 |
| May | 57°F (14°C) | 43°F (6°C) | 50°F (10°C) | 5.1" | 0.1 | 0.0 |
| June | 62°F (17°C) | 49°F (9°C) | 56°F (13°C) | 4.9" | 0.1 | 0.0 |
| July | 63°F (17°C) | 52°F (11°C) | 57°F (14°C) | 6.2" | 0.0 | 0.0 |
| August | 62°F (17°C) | 51°F (11°C) | 57°F (14°C) | 7.8" | 0.0 | 0.0 |
| September | 56°F (13°C) | 46°F (8°C) | 51°F (11°C) | 12.7" | 0.2 | 0.0 |
| October | 48°F (9°C) | 39°F (4°C) | 44°F (7°C) | 12.3" | 4.1 | 0.0 |
| November | 40°F (4°C) | 32°F (0°C) | 36°F (2°C) | 8.8" | 14.2 | 0.0 |
| December | 36°F (2°C) | 29°F (-2°C) | 33°F (0°C) | 9.9" | 19.4 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 64°F around July 31, short of 90°F on every date, while 138 dates carry a normal low at or below freezing, the coldest 26°F near January 8.
The freezing stretch
The normal low stays at or below 32°F into March 30, then returns to freezing around November 14, covering 138 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
The widest day
May 29 carries the biggest normal gap between afternoon and dawn, 14°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Juneau Dwtn.
Where Juneau Dwtn Stands Nationally
This is one of the wettest normals climates ranked: about 90 inches of precipitation in a normal year, a total fewer than one station in ten surpasses.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 14°F.
Juneau Dwtn earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
Juneau Dwtn spreads its precipitation across the year
Neither half of the year dominates here: June through August take 21% of the annual total and December through February 23%, with neither reaching the 35% that would mark a distinct wet season. Juneau Dwtn has no dry season to plan around, though it does carry an unusually narrow 27°F seasonal spread.
The gap between the wettest and driest month still matters: September averages 12.7" and April 4.8". The three wettest months together take 39% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Frost Dates & Growing Season
First Fall Freeze
October 22
50% probability date
Last Spring Freeze
April 20
50% probability date
Growing Season
185 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,827
Higher = more heating needed
Cooling Degree Days
12
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside AK closest to Juneau Dwtn 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 (44°F here).
- Alpena, MI 44°F · 0.0°F off
- Amery, WI 44°F · 0.0°F off
- Blanca, CO 44°F · 0.0°F off
- Bynum, MT 44°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (89.6" here), excluding temperature-peer places.
- Government Camp, OR 89.8" · 0.2" off
- Tillamook, OR 89.8" · 0.2" off
- Paauilo, HI 90.4" · 0.8" off
- Highlands, NC 88.3" · 1.3" off
Data-derived climate profile
How Juneau Dwtn's climate pattern fits together
heating led · wet · low swing
Heating is the larger measured load in Juneau Dwtn, at 7,827 degree days versus 12 for cooling. Unlike a strongly continental record, however, its 27.0°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Juneau Dwtn's frost-free season lasts about 185 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
Juneau Dwtn's 27.0°F seasonal spread is compact even though precipitation is abundant. July and January mark the typical warm and cold ends of the calendar. The annual average is 44°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
Alongside its heating load, Juneau Dwtn carries 89.6 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 Juneau Dwtn'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 Juneau Dwtn, not an official NOAA class or a year-ahead forecast.
Questions about Juneau Dwtn's climate
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Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Juneau Dwtn's primary station: JUNEAU DWTN (USC00504094). 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 Juneau Dwtn; 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 Juneau Dwtn 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.