Juneau Forecast Office, AK 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 Juneau Forecast Office's primary NOAA station, JUNEAU FORECAST OFFICE.
The climate verdict for Juneau Forecast Office
Water is the standout signal in Juneau Forecast Office, Alaska: 81.3 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 40°F. At 28/100 (below average) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 0% of scores.
- 40°F
- yearly average temperature, NOAA normal
- 28/100
- comfort score, above 0% of station-mapped location scores
- 81.3"
- yearly precipitation total
- 148 days
- frost-free growing season
Juneau Forecast Office: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00504103 · Juneau Forecast Office, AK 40°F mean · 81.3" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-WET · SWING-NARROW · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 40°F
- RANK-COOL #412
- PHOTO-FINISH ≈ Los Alamos
- PRCP-WET 81.3"
- SWING-NARROW 29°F
- COMF-LOW 28/100
- LOAD-HEAT 9,000 HDD
- STN-1 USC00504103
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Los Alamos, NM (+ 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 AK station list.
- Juneau Forecast… (this station) 40°F
- Hot Seward, AK 40°F
- Near Los Alamos, NM 40°F
- Near Lake City, CO 40°F
- Near Florissant Foss…, CO 40°F
Juneau Forecast Office 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 Forecast Office
Juneau Forecast Office: 15/100 · grade F
Juneau Forecast Office 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 Forecast Office, not an official NOAA rating. Rankings still use Comfort Score 28/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 175 calendar days | 29/100 · F |
| Frost-free season | 148 days/year | 24/100 · F |
| Annual temperature balance | 40.3°F · 27.2° from 67.5°F | 5/100 · F |
| Precipitation balance | 81.3 in · 46.3 from 35 in | 0/100 · F |
Juneau Forecast Office · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Juneau Forecast Office is a continental Köppen climate: Dfc
Coldest-month mean 25.7°F and warmest-month mean 54.2°F place this station in continental, no dry season, cool summer climates (Dfc). Class Dfc is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, cool summer.
- Köppen code
- Dfc
- Group
- Continental
- Warmest month
- 54.2°F
- Coldest month
- 25.7°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 Forecast Office sits across the climate record
Three NOAA fields for Juneau Forecast Office's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 94%
- Among 6,861 stations, Juneau Forecast Office sits in the cooler third of annual means.
- Annual precipitation
- Top 1% wettest
- Juneau Forecast Office's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 92%
- Warmest-to-coldest month gap for Juneau Forecast Office is compact versus 6,861 complete station-years.
How Juneau Forecast Office compares across U.S. station-mapped locations
Juneau Forecast Office's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
28 0th percentile score exceeds 0% 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%). This entry sits in this band.
- 30–40: 280 station-mapped locations (5%). Above this entry.
- 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 30°F (-1°C) | 21°F (-6°C) | 26°F (-4°C) | 6.6" | 25.8 | 0.0 |
| February | 34°F (1°C) | 22°F (-5°C) | 28°F (-2°C) | 4.6" | 23.8 | 0.0 |
| March | 40°F (4°C) | 24°F (-4°C) | 32°F (0°C) | 4.0" | 27.7 | 0.0 |
| April | 49°F (9°C) | 31°F (0°C) | 40°F (5°C) | 4.6" | 17.8 | 0.0 |
| May | 58°F (14°C) | 38°F (3°C) | 48°F (9°C) | 4.7" | 3.0 | 0.0 |
| June | 62°F (17°C) | 44°F (7°C) | 53°F (12°C) | 4.9" | 0.0 | 0.0 |
| July | 62°F (16°C) | 47°F (8°C) | 54°F (12°C) | 6.4" | 0.0 | 0.0 |
| August | 61°F (16°C) | 46°F (8°C) | 54°F (12°C) | 8.9" | 0.0 | 0.0 |
| September | 55°F (13°C) | 41°F (5°C) | 48°F (9°C) | 10.6" | 1.1 | 0.0 |
| October | 46°F (8°C) | 35°F (2°C) | 41°F (5°C) | 10.0" | 11.3 | 0.0 |
| November | 36°F (2°C) | 28°F (-2°C) | 32°F (0°C) | 8.0" | 22.0 | 0.0 |
| December | 32°F (0°C) | 24°F (-4°C) | 28°F (-2°C) | 8.1" | 25.5 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 62°F around July 30, short of 90°F on every date, while 175 dates carry a normal low at or below freezing, the coldest 21°F near January 14.
The freezing stretch
The normal low stays at or below 32°F into April 17, then returns to freezing around October 26, covering 175 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 23 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 Juneau Forecast Office.
Where Juneau Forecast Office Stands Nationally
This is one of the wettest normals climates ranked: about 81 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 20°F.
Juneau Forecast Office 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 Forecast Office spreads its precipitation across the year
Neither half of the year dominates here: June through August take 25% of the annual total and December through February 24%, with neither reaching the 35% that would mark a distinct wet season. Juneau Forecast Office has no dry season to plan around, though it does carry an unusually narrow 28.5°F seasonal spread.
The gap between the wettest and driest month still matters: September averages 10.6" and March 4.0". The three wettest months together take 36% 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 4
50% probability date
Last Spring Freeze
May 9
50% probability date
Growing Season
148 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
9,000
Higher = more heating needed
Cooling Degree Days
1
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside AK closest to Juneau Forecast Office 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 (40°F here).
- Deer Lodge, MT 40°F · 0.0°F off
- Elliston, MT 40°F · 0.0°F off
- Jamestown, ND 40°F · 0.0°F off
- Lake City, CO 40°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (81.3" here), excluding temperature-peer places.
- Falls City, OR 81.2" · 0.1" off
- Cloverdale, OR 79.7" · 1.6" off
- Darrington, WA 83.0" · 1.7" off
- Raymond, WA 83.7" · 2.3" off
Data-derived climate profile
How Juneau Forecast Office's climate pattern fits together
heating led · wet · low swing
Heating is the larger measured load in Juneau Forecast Office, at 9,000 degree days versus 1 for cooling. Unlike a strongly continental record, however, its 28.5°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Only about 148 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
Juneau Forecast Office's 28.5°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 40°F. Temperature is relatively steady; the monthly rows show how rain and snow observations vary across the calendar.
Alongside its heating load, Juneau Forecast Office carries 81.3 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 Forecast Office'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 Forecast Office, not an official NOAA class or a year-ahead forecast.
Questions about Juneau Forecast Office's climate
How much rain does Juneau Forecast Office get? ▼
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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 Forecast Office's primary station: JUNEAU FORECAST OFFICE (USC00504103). 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 Forecast Office; 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 Forecast Office 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.