Pontiac weather in December: Pontiac, Michigan: normal highs, lows, rain and records for December
Pontiac in December has a normal high of 35°F and a normal low of 23°F, a daily mean of 29°F, falling from 40°F on the 1st to 32°F by the 31st. Measurable precipitation falls on 10 days in a normal December, 1.59 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 2°C and low of −5°C, 40 mm of precipitation in December.
- NOAA stationPontiac Oakland County International Airport
- Station IDUSW00094817
- Location42.66°N 83.42°W
- Elevation976 ft (298 m)
- From the center7 miles
- Population62,528
- Jan 30° 17°
- Feb 33° 18°
- Mar 43° 26°
- Apr 57° 36°
- May 69° 48°
- Jun 78° 58°
- Jul 82° 62°
- Aug 80° 61°
- Sep 73° 53°
- Oct 60° 42°
- Nov 46° 32°
- Dec 35° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Pontiac in December?
The normal high is 35°F and the normal low 23°F, for a daily mean of 28.9°F. December is 10.1°F cooler than November and 5.4°F warmer than January. December is the 10th warmest month of the year in Pontiac and the 11th wettest. Across the month the normal high falls 8°F, from 40°F on December 1 to 32°F on December 31. From one year to the next December's mean temperature typically moves about 4.5°F either way (NOAA's standard deviation), so roughly two Decembers 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 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 40°F | 27°F | 33% | 15% |
| December 8 | 37°F | 25°F | 34% | 15% |
| December 15 | 35°F | 23°F | 35% | 14% |
| December 22 | 33°F | 21°F | 35% | 14% |
| December 31 | 32°F | 19°F | 35% | 14% |
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 | 40°F | 27°F | 33% | 15% | 9 h 20 min |
| December 2 | 39°F | 27°F | 33% | 15% | 9 h 20 min |
| December 3 | 39°F | 27°F | 33% | 15% | 9 h 20 min |
| December 4 | 38°F | 26°F | 33% | 15% | 9 h 10 min |
| December 5 | 38°F | 26°F | 33% | 15% | 9 h 10 min |
| December 6 | 38°F | 26°F | 34% | 15% | 9 h 10 min |
| December 7 | 37°F | 25°F | 34% | 15% | 9 h 10 min |
| December 8 | 37°F | 25°F | 34% | 15% | 9 h 10 min |
| December 9 | 37°F | 25°F | 34% | 15% | 9 h 10 min |
| December 10 | 36°F | 24°F | 34% | 15% | 9 h 10 min |
| December 11 | 36°F | 24°F | 34% | 14% | 9 h 10 min |
| December 12 | 36°F | 24°F | 34% | 14% | 9 h 10 min |
| December 13 | 35°F | 24°F | 34% | 14% | 9 h 10 min |
| December 14 | 35°F | 23°F | 34% | 14% | 9 h |
| December 15 | 35°F | 23°F | 35% | 14% | 9 h |
| December 16 | 35°F | 23°F | 35% | 14% | 9 h |
| December 17 | 34°F | 22°F | 35% | 14% | 9 h |
| December 18 | 34°F | 22°F | 35% | 14% | 9 h |
| December 19 | 34°F | 22°F | 35% | 14% | 9 h |
| December 20 | 34°F | 22°F | 35% | 14% | 9 h |
| December 21 | 33°F | 21°F | 35% | 14% | 9 h |
| December 22 | 33°F | 21°F | 35% | 14% | 9 h |
| December 23 | 33°F | 21°F | 35% | 14% | 9 h |
| December 24 | 33°F | 21°F | 35% | 14% | 9 h |
| December 25 | 33°F | 20°F | 35% | 14% | 9 h |
| December 26 | 32°F | 20°F | 35% | 14% | 9 h |
| December 27 | 32°F | 20°F | 35% | 14% | 9 h |
| December 28 | 32°F | 20°F | 35% | 14% | 9 h |
| December 29 | 32°F | 19°F | 35% | 14% | 9 h |
| December 30 | 32°F | 19°F | 35% | 14% | 9 h |
| December 31 | 32°F | 19°F | 35% | 14% | 9 h 10 min |
- Normal high
- 35°FDecember average
- Normal low
- 23°FDecember average
- Precipitation
- 1.59 inmonth total
- Days with precipitation
- 100.01 inch or more
- Nights at 32°F or colder
- 27
- Daylight
- 9 h 20 min to 9 h 10 minDecember 1 to December 31
- Sunshine
- 54%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094817; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Pontiac in December?
On a given December day the chance of 0.01 inch or more is 34% on average, highest around December 28 (35%). In all, 1.59 in falls on 10 days of a normal December.
In a normal December in Pontiac, 27 nights fall to freezing and 13 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094817.
What are the records for December in Pontiac?
The warmest December temperature on this station's record (since 1998) is 66°F, on December 6, 1998; the coldest is −10°F, on December 28, 2017. The wettest December brought 3.44 in (2006).
The December mean against the 1991-2020 normal of 28.9°F: 2021 34.5°F (+5.6), 2022 30.7°F (+1.8), 2023 38.4°F (+9.5), 2024 31.4°F (+2.5), 2025 24.9°F (−4.0). 4 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 34.5°F | +5.6°F | 2.37 in |
| 2022 | 30.7°F | +1.8°F | 1.31 in |
| 2023 | 38.4°F | +9.5°F | 2.24 in |
| 2024 | 31.4°F | +2.5°F | 1.83 in |
| 2025 | 24.9°F | −4.0°F | 2.77 in |
Source: records: ACIS, station USW00094817; recent months: ACIS, station USW00094817. Records and recent months use complete months only.
How does December in Pontiac compare across Michigan?
Across the 140 places PlainClimate covers in Michigan, December normal highs run from 26°F in Bergland to 39°F in South Haven; Pontiac's is 35°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.