Sister Bay, WI weather in December
In December, Sister Bay sees highs around 32°F and lows around 19°F: cold and snowy. Rain or snow falls on about 10 days. Snowfall averages about 12.0 in. Dress for deep cold.
- Normal high
- 32°F
- Normal low
- 19°F
- Wet days
- 10
- 1.8 in total
- Snowfall
- 12.0 in
- snow on the ground 16 days
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 37°F | 28°F |
| Normal low | 24°F | 15°F |
| Chance of a wet day | 31% | 31% |
| Sunrise / sunset | 7:07 am / 4:07 pm | 7:27 am / 4:15 pm |
| Daylight | 9.0 h | 8.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)0 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain (temperature and rain only)0 of 31
- Hot dayshigh 90°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in5 of 31
- Freezing nightslow 32°F or below28 of 31
- Snow on the groundsnow depth 1 in or more16 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain and snow in December
Normal precipitation is 1.8 in; a dry December brings about 1.2 in and a wet one about 2.1 in (25th and 75th percentiles). About 1 day brings half an inch or more. Normal snowfall is 12.0 in, with about 4 days of an inch or more.
How December varies from year to year
- Warmest December, 1991-20202015: average high 40°F
- Coolest December2013: average high 23°F
- Wettest December2015: 5.2 in
- Driest December1994: 0.2 in
- Highest reading58°F (December 6, 2001)
- Lowest reading-6°F (December 29, 2000)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
December compared with November and January
| November | December | January | |
|---|---|---|---|
| Normal high | 42°F | 32°F | 26°F |
| Normal low | 29°F | 19°F | 11°F |
| Wet days | 9 | 10 | 10 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 9.6 h | 8.8 h | 9.2 h |
Highs change by -10°F from November and -6°F into January.
Nearby alternatives in December
- Warmer: Chicago, IL232 mi · high 38°F · 11 wet days
How Sister Bay ranks in December
- Normal high353rd warmest of 378 cities; 3rd of 5 in Wisconsin
- Wet days206th driest of 378
What to pack for Sister Bay in December
- A warm jacket – lows near 19°F, highs near 32°F
- A rain jacket or umbrella – rain or snow on about 10 days
- Waterproof boots – snow on the ground on about 16 days
- A hat and gloves – about 28 freezing nights
Heating and cooling
December has 1221 heating degree days and 0 cooling degree days (base 65°F), 14% of the year's total heating and cooling demand.
Questions
How cold is Sister Bay in December?
The normal high is 32°F and the normal low is 19°F. From 1991 to 2020 the coldest December reading was -6°F (December 29, 2000).
Does it rain a lot in Sister Bay in December?
About 10 days in December have at least 0.01 in of precipitation, and the normal total is 1.8 in. The wettest December in 1991-2020 was in 2015 (5.2 in); the driest was in 1994 (0.2 in).
Does it snow in Sister Bay in December?
Yes. Normal snowfall in December is 12.0 in, and snow covers the ground on about 16 days.
Is December a good time to visit Sister Bay?
December ranks 11th of 12 months on our comfort score for Sister Bay (24 out of 100). It has almost no comfortable days (judged by temperature only). The best months are June, July and August.
Where the numbers come from
- Temperature, rain and snowfall: Washington Is (USC00478905), 16 mi NE of the city center, 686 ft (73 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snow depth: Sturgeon Bay Exp Farm (USC00478267), 24 mi SSW of the city center, 699 ft (86 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Ephraim 1NE-Wwtp (USC00472626), 2.0 mi SW of the city center, 733 ft (120 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Not available for this location: humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).