Juneau weather in January

In January, Juneau sees average daytime highs of 27°F and overnight lows near 19°F, with 9.8 in of precipitation across 19.8 wet days and about 6.8 hours of daylight. It is the 12th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°F through the month. The sky is clear or mostly clear about 16% of the time in January, and the air most often feels dry.

Daylight stretches from about 6 h 12 min at the start of January to 7 h 42 min by month's end. Set against the rest of the year, January is Juneau's 5th-clearest and 2nd-windiest month. For the whole year in context, see Juneau's year-round climate.

Daytime high
27°
12th warmest
Overnight low
19°
1st coldest
Precipitation
9.8 in
19.8 wet days
Daylight
6 h 48 min
8:44 AM – 3:30 PM
Cloud cover
77%
5th clearest
Wind
6 mph
2nd windiest
Solar energy
0.43 kWh/m²
Travel score
0.0
out of 10

Juneau is consolidated city-borough and capital of the U.S. state of Alaska.

Density
4/km²
people per km²
Founded
1881

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°F through the month.

A typical January day in Juneau reaches about 27°F in the afternoon and slips back to 19°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 8°F and 39°F. Set against its neighbours, January runs about 2°F cooler than December and about 3°F cooler than February.

20°40°151015202531
Avg high (°F)Avg low (°F)
12619
22618
32618
42618
52618
62618
72618
82618
92618
102618
112619
122619
132619
142719
152719
162719
172719
182720
192720
202820
212820
222820
232820
242820
252820
262820
272820
282820
292820
302820
312820

How January really feels in Juneau

Once humidity and wind are folded in, January averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
31
31 feel bitter (≤ 14°F)

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

Juneau weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan27° / 19°9.819.819.46.80.0
Feb29° / 20°7.416.615.98.90.0
Mar33° / 22°7.217.917.711.40.0
Apr41° / 30°5.616.511.9140.2
May50° / 37°5.4163.616.41.9
Jun58° / 46°5.316.5017.83.3
Jul60° / 50°7.018.9017.23.7
Aug59° / 49°9.319.3015.13.5
Sep53° / 43°13.0210.212.52.2
Oct43° / 34°13.022.78.29.90.4
Nov33° / 24°10.320.918.67.50.0
Dec29° / 21°10.821.120.46.20.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 5% of January, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22476
32575
42575
52575
62674
72674
82575
92674
102575
112476
122377
132278
142179
152080
162080
171882
181882
191882
201783
211783
221783
231882
241981
251981
261981
272080
282179
292179
302278
312278

Chance of precipitation in January

Any precipitationSnow

Juneau gets around 9.8 in of rain and snow over 19.8 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 63% and peaks near 67% on the wettest days, and about 19 days bring snow.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
16060
26059
35959
45959
55959
65959
75959
86060
96060
106160
116161
126261
136362
146362
156463
166563
176563
186664
196664
206764
216765
226765
236765
246765
256765
266764
276664
286664
296563
306563
316462

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 6 mph in January.

Across January, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 6 h 12 min at the start of January to 7 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 90 minutes over January. Sunrise moves from 8:55 AM to 8:19 AM, and sunset from 3:06 PM to 4:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
16.28:553:06
26.28:553:07
36.28:553:09
46.38:543:10
56.38:543:11
66.38:533:13
76.48:533:14
86.48:523:16
96.48:513:18
106.58:503:19
116.58:493:21
126.68:483:23
136.68:473:25
146.78:463:26
156.78:453:28
166.88:443:30
176.88:423:32
186.98:413:34
196.98:403:36
207.08:383:39
217.18:373:41
227.18:353:43
237.28:333:45
247.38:323:47
257.38:303:49
267.48:283:52
277.58:263:54
287.58:253:56
297.68:233:59
307.78:214:01
317.78:194:03

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.43 kWh/m².

For context, solar energy here swings from a low near 0.29 kWh/m² to a high of 5.09 kWh/m² in May across the year — January's 0.43 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.3Dim
20.3Dim
30.3Dim
40.3Dim
50.3Dim
60.4Dim
70.4Dim
80.4Dim
90.4Dim
100.4Dim
110.4Dim
120.4Dim
130.4Dim
140.4Dim
150.4Dim
160.4Dim
170.4Dim
180.4Dim
190.5Dim
200.5Dim
210.5Dim
220.5Dim
230.5Dim
240.5Dim
250.6Dim
260.6Dim
270.6Dim
280.6Dim
290.7Dim
300.7Dim
310.7Dim
Planning a trip in January

Is January a good time to visit Juneau?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
8th-best month of the year
Beach & pool
never really warm enough

January is a weaker month for outdoor sightseeing in Juneau.

What to pack for Juneau in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Juneau sees daytime highs around 27°F and nights near 19°F. Pack a warm layer, a heavy coat and rain gear. About 20 days see rain.

a warm layera heavy coatrain gear

UV index in Juneau in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 0. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Juneau peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowJul 15UV 9Dec 20UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr4Moderate
May5Moderate
Jun7High
Jul9Very high
Aug5High
Sep4Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Juneau?

Juneau sits at 58.3°N, 134.4°W, 56 ft above sea level, in United States. The nearest listed city is Whitehorse, 168 mi away.

TerraceDawson CityFort St. JohnPrince GeorgeEagle RiverAnchorageBadger

Topography around Juneau

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Juneau.

Within 2 miles, the terrain around Juneau has large variations in elevation — a maximum elevation change of 3,556 ft around an average of 945 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 5,486 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 7,946 ft.

The land around Juneau is covered by trees (57%) within 2 miles, trees (40%) and water (22%) within 10 miles, and trees (35%), snow and ice (25%) and water (24%) within 50 miles.

2 miles
3,556 ft
10 miles
5,486 ft
50 miles
7,946 ft
treesgrasslandartificial surfacesbare terrainsnow and icewatermoss and lichen
January weather nearby: Whitehorse 168 mi · Terrace 343 mi · Dawson City 431 mi · Fort St. John 525 mi · Prince George 541 mi · Eagle River 564 mi · Anchorage 574 mi · Badger 621 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Juneau (58.3019°, -134.4197°, elevation 56 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).