Juneau weather in January: Juneau, Alaska: normal highs, lows, rain and records for January
Juneau in January has a normal high of 33°F and a normal low of 24°F, a daily mean of 29°F, holding near 33°F all month. Measurable precipitation falls on 20 days in a normal January, 6.02 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 1°C and low of −5°C, 153 mm of precipitation and 62 cm of snow in January.
- NOAA stationJuneau Airport
- Station IDUSW00025309
- Location58.36°N 134.56°W
- Elevation16 ft (5 m)
- Population31,572
- Jan 33° 24°
- Feb 36° 25°
- Mar 39° 27°
- Apr 49° 33°
- May 58° 40°
- Jun 62° 47°
- Jul 64° 50°
- Aug 63° 49°
- Sep 56° 44°
- Oct 47° 37°
- Nov 38° 29°
- Dec 35° 26°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Juneau in January?
The normal high is 33°F and the normal low 24°F, for a daily mean of 28.5°F. January is 1.8°F cooler than December and 1.6°F cooler than February. January is the 12th warmest month of the year in Juneau and the 6th wettest, and the snowiest. Across the month the normal high rises 1°F, from 33°F on January 1 to 34°F on January 31. From one year to the next January's mean temperature typically moves about 4.5°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 24°F and 33°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 66%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 33°F | 24°F | 66% | 43% |
| January 8 | 33°F | 24°F | 66% | 43% |
| January 15 | 33°F | 24°F | 66% | 43% |
| January 22 | 33°F | 24°F | 65% | 42% |
| January 31 | 34°F | 24°F | 64% | 41% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 31, coldest night January 11)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 33°F | 24°F | 66% | 43% | 6 h 30 min |
| January 2 | 33°F | 24°F | 66% | 43% | 6 h 30 min |
| January 3 | 33°F | 24°F | 66% | 43% | 6 h 30 min |
| January 4 | 33°F | 24°F | 66% | 43% | 6 h 30 min |
| January 5 | 33°F | 24°F | 66% | 43% | 6 h 40 min |
| January 6 | 33°F | 24°F | 66% | 43% | 6 h 40 min |
| January 7 | 33°F | 24°F | 66% | 43% | 6 h 40 min |
| January 8 | 33°F | 24°F | 66% | 43% | 6 h 40 min |
| January 9 | 33°F | 24°F | 66% | 43% | 6 h 50 min |
| January 10 | 33°F | 24°F | 66% | 43% | 6 h 50 min |
| January 11 | 33°F | 24°F | 66% | 43% | 6 h 50 min |
| January 12 | 33°F | 24°F | 66% | 43% | 6 h 50 min |
| January 13 | 33°F | 24°F | 66% | 43% | 7 h |
| January 14 | 33°F | 24°F | 66% | 43% | 7 h |
| January 15 | 33°F | 24°F | 66% | 43% | 7 h |
| January 16 | 33°F | 24°F | 66% | 43% | 7 h 10 min |
| January 17 | 33°F | 24°F | 66% | 43% | 7 h 10 min |
| January 18 | 33°F | 24°F | 65% | 43% | 7 h 10 min |
| January 19 | 33°F | 24°F | 65% | 43% | 7 h 20 min |
| January 20 | 33°F | 24°F | 65% | 43% | 7 h 20 min |
| January 21 | 33°F | 24°F | 65% | 43% | 7 h 30 min |
| January 22 | 33°F | 24°F | 65% | 42% | 7 h 30 min |
| January 23 | 33°F | 24°F | 65% | 42% | 7 h 30 min |
| January 24 | 34°F | 24°F | 65% | 42% | 7 h 40 min |
| January 25 | 34°F | 24°F | 65% | 42% | 7 h 40 min |
| January 26 | 34°F | 24°F | 65% | 42% | 7 h 50 min |
| January 27 | 34°F | 24°F | 65% | 42% | 7 h 50 min |
| January 28 | 34°F | 24°F | 64% | 42% | 7 h 50 min |
| January 29 | 34°F | 24°F | 64% | 42% | 8 h |
| January 30 | 34°F | 24°F | 64% | 41% | 8 h |
| January 31 | 34°F | 24°F | 64% | 41% | 8 h 10 min |
- Normal high
- 33°FJanuary average
- Normal low
- 24°FJanuary average
- Precipitation
- 6.02 inmonth total
- Days with precipitation
- 200.01 inch or more
- Snowfall
- 24.5 inmonth total
- Nights at 32°F or colder
- 23
- Daylight
- 6 h 30 min to 8 h 10 minJanuary 1 to January 31
- Sunshine
- 46%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00025309; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Juneau in January?
On a given January day the chance of 0.01 inch or more is 65% on average, highest around January 1 (66%). In all, 6.02 in falls on 20 days of a normal January, 1 of them with an inch or more.
In a normal January in Juneau, 23 nights fall to freezing, 12 days stay below freezing all day and snowfall averages 24.5 inches.
Snow falls on 10 days in a normal January, and an inch or more covers the ground on 18 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00025309.
How humid and windy is Juneau in January?
At 3 p.m. the normal temperature is 32°F with 79% relative humidity and a dew point of 26°F; at 6 a.m. it is 29°F with 85% humidity. The wind averages 7.4 mph, most often from the east-southeast in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 29°F | 25°F | 85% | 7.1 mph | – |
| 9 a.m. | 29°F | 25°F | 86% | 7.3 mph | 13% |
| noon | 32°F | 26°F | 80% | 8.2 mph | – |
| 3 p.m. | 32°F | 26°F | 79% | 8.3 mph | 15% |
| 6 p.m. | 30°F | 26°F | 83% | 7.2 mph | – |
| 9 p.m. | 29°F | 25°F | 85% | 6.9 mph | 17% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00025309. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for January in Juneau?
The warmest January temperature on Juneau's official record (since 1943) is 57°F, on January 6, 1958; the coldest is −22°F, on January 12, 1972. The wettest January brought 12.29 in (2022); the snowiest, 76.8 inches (2024).
The January mean against the 1991-2020 normal of 28.5°F: 2021 33.9°F (+5.4), 2022 29.0°F (+0.5), 2023 34.6°F (+6.1), 2024 28.1°F (−0.4), 2025 33.2°F (+4.7), 2026 28.9°F (+0.4). 5 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 33.9°F | +5.4°F | 6.21 in |
| 2022 | 29.0°F | +0.5°F | 12.29 in |
| 2023 | 34.6°F | +6.1°F | 6.74 in |
| 2024 | 28.1°F | −0.4°F | 9.68 in |
| 2025 | 33.2°F | +4.7°F | 6.74 in |
| 2026 | 28.9°F | +0.4°F | 7.20 in |
Source: records: ACIS, NWS threaded record JNUthr; recent months: ACIS, station USW00025309. Records and recent months use complete months only.
How does January in Juneau compare across Alaska?
Across the 85 places PlainClimate covers in Alaska, January normal highs run from −11°F in Chicken to 41°F in Metlakatla; Juneau's is 33°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.