Oshkosh weather in December: Oshkosh, Wisconsin: normal highs, lows, rain and records for December
Oshkosh in December has a normal high of 32°F and a normal low of 18°F, a daily mean of 25°F, falling from 37°F on the 1st to 28°F by the 31st. Measurable precipitation falls on 8 days in a normal December, 1.27 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 0°C and low of −8°C, 32 mm of precipitation in December.
- NOAA stationOshkosh Wittman Airport
- Station IDUSW00094855
- Location43.98°N 88.56°W
- Elevation782 ft (238 m)
- Population67,242
- Jan 26° 11°
- Feb 30° 14°
- Mar 42° 24°
- Apr 55° 36°
- May 67° 47°
- Jun 77° 57°
- Jul 81° 61°
- Aug 79° 60°
- Sep 72° 51°
- Oct 59° 40°
- Nov 44° 29°
- Dec 32° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Oshkosh in December?
The normal high is 32°F and the normal low 18°F, for a daily mean of 24.8°F. December is 11.5°F cooler than November and 6.3°F warmer than January. December is the 10th warmest month of the year in Oshkosh and the 10th wettest. Across the month the normal high falls 9°F, from 37°F on December 1 to 28°F on December 31. From one year to the next December's mean temperature typically moves about 5.0°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 20°F and 30°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 27%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 37°F | 23°F | 27% | 12% |
| December 8 | 34°F | 20°F | 27% | 11% |
| December 15 | 32°F | 18°F | 27% | 11% |
| December 22 | 30°F | 16°F | 27% | 11% |
| December 31 | 28°F | 14°F | 26% | 10% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 37°F | 23°F | 27% | 12% | 9 h 10 min |
| December 2 | 37°F | 22°F | 27% | 12% | 9 h 10 min |
| December 3 | 36°F | 22°F | 27% | 12% | 9 h 10 min |
| December 4 | 36°F | 22°F | 27% | 12% | 9 h 10 min |
| December 5 | 35°F | 21°F | 27% | 12% | 9 h |
| December 6 | 35°F | 21°F | 27% | 12% | 9 h |
| December 7 | 35°F | 21°F | 27% | 11% | 9 h |
| December 8 | 34°F | 20°F | 27% | 11% | 9 h |
| December 9 | 34°F | 20°F | 27% | 11% | 9 h |
| December 10 | 33°F | 20°F | 27% | 11% | 9 h |
| December 11 | 33°F | 19°F | 27% | 11% | 9 h |
| December 12 | 33°F | 19°F | 27% | 11% | 9 h |
| December 13 | 32°F | 19°F | 27% | 11% | 9 h |
| December 14 | 32°F | 18°F | 27% | 11% | 9 h |
| December 15 | 32°F | 18°F | 27% | 11% | 9 h |
| December 16 | 31°F | 18°F | 27% | 11% | 8 h 50 min |
| December 17 | 31°F | 18°F | 27% | 11% | 8 h 50 min |
| December 18 | 31°F | 17°F | 27% | 11% | 8 h 50 min |
| December 19 | 31°F | 17°F | 27% | 11% | 8 h 50 min |
| December 20 | 30°F | 17°F | 27% | 11% | 8 h 50 min |
| December 21 | 30°F | 16°F | 27% | 11% | 8 h 50 min |
| December 22 | 30°F | 16°F | 27% | 11% | 8 h 50 min |
| December 23 | 29°F | 16°F | 27% | 11% | 8 h 50 min |
| December 24 | 29°F | 15°F | 27% | 11% | 8 h 50 min |
| December 25 | 29°F | 15°F | 26% | 11% | 8 h 50 min |
| December 26 | 29°F | 15°F | 26% | 10% | 8 h 50 min |
| December 27 | 28°F | 15°F | 26% | 10% | 8 h 50 min |
| December 28 | 28°F | 14°F | 26% | 10% | 8 h 50 min |
| December 29 | 28°F | 14°F | 26% | 10% | 9 h |
| December 30 | 28°F | 14°F | 26% | 10% | 9 h |
| December 31 | 28°F | 14°F | 26% | 10% | 9 h |
- Normal high
- 32°FDecember average
- Normal low
- 18°FDecember average
- Precipitation
- 1.27 inmonth total
- Days with precipitation
- 80.01 inch or more
- Nights at 32°F or colder
- 28
- Daylight
- 9 h 10 min to 9 hDecember 1 to December 31
- Sunshine
- 59%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094855; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Oshkosh in December?
On a given December day the chance of 0.01 inch or more is 27% on average, highest around December 1 (27%). In all, 1.27 in falls on 8 days of a normal December.
In a normal December in Oshkosh, 28 nights fall to freezing and 16 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094855.
What are the records for December in Oshkosh?
The warmest December temperature on this station's record (since 1996) is 65°F, on December 5, 2001; the coldest is −20°F, on December 25, 2000. The wettest December brought 4.08 in (2015); the snowiest, 19.9 inches (2009).
The December mean against the 1991-2020 normal of 24.8°F: 2021 28.9°F (+4.1), 2022 24.5°F (−0.3), 2023 35.2°F (+10.4), 2024 26.1°F (+1.3), 2025 19.1°F (−5.7). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 28.9°F | +4.1°F | 1.22 in |
| 2022 | 24.5°F | −0.3°F | 1.53 in |
| 2023 | 35.2°F | +10.4°F | 1.17 in |
| 2024 | 26.1°F | +1.3°F | 0.83 in |
| 2025 | 19.1°F | −5.7°F | 1.58 in |
Source: records: ACIS, station USW00094855; recent months: ACIS, station USW00094855. Records and recent months use complete months only.
How does December in Oshkosh compare across Wisconsin?
Across the 165 places PlainClimate covers in Wisconsin, December normal highs run from 24°F in Drummond to 37°F in Kenosha; Oshkosh's is 32°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.