Green Bay, WI weather in January
Green Bay is very cold and snowy in January: highs average 26°F and nights drop to about 11°F. Expect about 11 wet days. Snowfall averages about 14.3 in. This is the depth of winter in Green Bay. Pack for serious cold.
- Normal high
- 26°F
- Normal low
- 11°F
- Wet days
- 11
- 1.4 in total
- Snowfall
- 14.3 in
- snow on the ground 24 days
How January changes from start to finish
| January 1 | January 31 | |
|---|---|---|
| Normal high | 27°F | 26°F |
| Normal low | 14°F | 10°F |
| Chance of a wet day | 35% | 33% |
| Sunrise / sunset | 7:28 am / 4:22 pm | 7:11 am / 4:59 pm |
| Daylight | 8.9 h | 9.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical January day
- 6 am16°Fdew point 11°F
- 9 am18°Fdew point 12°F
- Noon22°Fdew point 14°F
- 3 pm24°Fdew point 14°F
- 6 pm21°Fdew point 13°F
- 9 pm19°Fdew point 12°F
NOAA hourly normals (local standard time) from Green Bay (5 mi away); average wind 9 mph; clear or few clouds in 45% of daytime hours, mostly cloudy or overcast in 51%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph0 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow11 of 31
- Notable rainat least 0.10 in4 of 31
- Freezing nightslow 32°F or below30 of 31
- Snow on the groundsnow depth 1 in or more24 of 31
Average days per January, counted from daily records for each year 1991-2020.
Rain and snow in January
Normal precipitation is 1.4 in; a dry January brings about 0.7 in and a wet one about 1.8 in (25th and 75th percentiles). Days with half an inch or more are rare. Normal snowfall is 14.3 in, with about 5 days of an inch or more.
How January varies from year to year
- Warmest January, 1991-20202006: average high 36°F
- Coolest January1994: average high 15°F
- Wettest January2008: 3.6 in
- Driest January2015: 0.6 in
- Highest reading53°F (January 9, 2002)
- Lowest reading-28°F (January 19, 1994)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
January compared with December and February
| December | January | February | |
|---|---|---|---|
| Normal high | 31°F | 26°F | 29°F |
| Normal low | 18°F | 11°F | 13°F |
| Wet days | 11 | 11 | 9 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 8.9 h | 9.3 h | 10.5 h |
Highs change by -5°F from December and +3°F into February.
Nearby alternatives in January
- Warmer: Milwaukee, WI102 mi · high 31°F · 11 wet days
- Drier: Wisconsin Dells, WI107 mi · high 26°F · 7 wet days
How Green Bay ranks in January
- Normal high366th warmest of 378 cities; 5th of 5 in Wisconsin
- Wet days270th driest of 378
- Comfortable days334th most of 339
What to pack for Green Bay in January
- A warm jacket – lows near 11°F, highs near 26°F
- A rain jacket or umbrella – rain or snow on about 11 days
- Waterproof boots – snow on the ground on about 24 days
- A hat and gloves – about 30 freezing nights
Heating and cooling
January has 1448 heating degree days and 0 cooling degree days (base 65°F), 18% of the year's total heating and cooling demand.
Questions
How cold is Green Bay in January?
The normal high is 26°F and the normal low is 11°F. From 1991 to 2020 the coldest January reading was -28°F (January 19, 1994).
Does it rain a lot in Green Bay in January?
About 11 days in January have at least 0.01 in of precipitation, and the normal total is 1.4 in. The wettest January in 1991-2020 was in 2008 (3.7 in); the driest was in 2015 (0.6 in).
Does it snow in Green Bay in January?
Yes. Normal snowfall in January is 14.3 in, and snow covers the ground on about 24 days.
Is January a good time to visit Green Bay?
January ranks 12th of 12 months on our comfort score for Green Bay (23 out of 100). It has almost no comfortable days. The best months are May, June and September.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Green Bay (USW00014898), 4.7 mi WSW of the city center, 682 ft (89 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Austin Straubel International Airport (726450-14898), 6.4 mi WSW of the city center, 684 ft (91 ft higher than the city). Hourly observations, 1991-2020.