Newark weather in December: Newark, New Jersey: normal highs, lows, rain and records for December
Newark in December has a normal high of 45°F and a normal low of 31°F, a daily mean of 38°F, falling from 49°F on the 1st to 41°F by the 31st. Measurable precipitation falls on 11 days in a normal December, 4.14 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 7°C and low of 0°C, 105 mm of precipitation and 14 cm of snow in December.
- NOAA stationNewark Liberty International Airport
- Station IDUSW00014734
- Location40.68°N 74.17°W
- Elevation7 ft (2 m)
- From the center3 miles
- Population317,303
- Jan 40° 26°
- Feb 43° 27°
- Mar 51° 34°
- Apr 63° 44°
- May 73° 54°
- Jun 82° 64°
- Jul 87° 69°
- Aug 85° 68°
- Sep 78° 61°
- Oct 66° 49°
- Nov 55° 39°
- Dec 45° 31°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Newark in December?
The normal high is 45°F and the normal low 31°F, for a daily mean of 38.0°F. December is 9.0°F cooler than November and 5.2°F warmer than January. December is the 10th warmest month of the year in Newark and the 4th wettest. Across the month the normal high falls 8°F, from 49°F on December 1 to 41°F on December 31. From one year to the next December's mean temperature typically moves about 3.9°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 34°F and 42°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 | 49°F | 35°F | 34% | 21% |
| December 8 | 47°F | 33°F | 35% | 22% |
| December 15 | 45°F | 31°F | 35% | 23% |
| December 22 | 43°F | 30°F | 35% | 22% |
| December 31 | 41°F | 28°F | 35% | 22% |
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 | 49°F | 35°F | 34% | 21% | 9 h 30 min |
| December 2 | 49°F | 35°F | 34% | 21% | 9 h 30 min |
| December 3 | 49°F | 34°F | 34% | 22% | 9 h 30 min |
| December 4 | 48°F | 34°F | 35% | 22% | 9 h 30 min |
| December 5 | 48°F | 34°F | 35% | 22% | 9 h 30 min |
| December 6 | 48°F | 34°F | 35% | 22% | 9 h 20 min |
| December 7 | 47°F | 33°F | 35% | 22% | 9 h 20 min |
| December 8 | 47°F | 33°F | 35% | 22% | 9 h 20 min |
| December 9 | 47°F | 33°F | 35% | 22% | 9 h 20 min |
| December 10 | 46°F | 33°F | 35% | 22% | 9 h 20 min |
| December 11 | 46°F | 32°F | 35% | 22% | 9 h 20 min |
| December 12 | 46°F | 32°F | 35% | 22% | 9 h 20 min |
| December 13 | 45°F | 32°F | 35% | 23% | 9 h 20 min |
| December 14 | 45°F | 32°F | 35% | 23% | 9 h 20 min |
| December 15 | 45°F | 31°F | 35% | 23% | 9 h 20 min |
| December 16 | 45°F | 31°F | 35% | 23% | 9 h 20 min |
| December 17 | 44°F | 31°F | 35% | 22% | 9 h 20 min |
| December 18 | 44°F | 31°F | 35% | 22% | 9 h 20 min |
| December 19 | 44°F | 31°F | 35% | 22% | 9 h 20 min |
| December 20 | 44°F | 30°F | 35% | 22% | 9 h 20 min |
| December 21 | 43°F | 30°F | 35% | 22% | 9 h 20 min |
| December 22 | 43°F | 30°F | 35% | 22% | 9 h 20 min |
| December 23 | 43°F | 30°F | 35% | 22% | 9 h 20 min |
| December 24 | 43°F | 29°F | 35% | 22% | 9 h 20 min |
| December 25 | 42°F | 29°F | 35% | 22% | 9 h 20 min |
| December 26 | 42°F | 29°F | 35% | 22% | 9 h 20 min |
| December 27 | 42°F | 29°F | 35% | 22% | 9 h 20 min |
| December 28 | 42°F | 28°F | 35% | 22% | 9 h 20 min |
| December 29 | 42°F | 28°F | 35% | 22% | 9 h 20 min |
| December 30 | 41°F | 28°F | 35% | 22% | 9 h 20 min |
| December 31 | 41°F | 28°F | 35% | 22% | 9 h 20 min |
- Normal high
- 45°FDecember average
- Normal low
- 31°FDecember average
- Precipitation
- 4.14 inmonth total
- Days with precipitation
- 110.01 inch or more
- Snowfall
- 5.4 inmonth total
- Nights at 32°F or colder
- 18
- Daylight
- 9 h 30 min to 9 h 20 minDecember 1 to December 31
- Sunshine
- 66%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014734; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Newark in December?
On a given December day the chance of 0.01 inch or more is 35% on average, highest around December 16 (35%). In all, 4.14 in falls on 11 days of a normal December, 1 of them with an inch or more.
In a normal December in Newark, 18 nights fall to freezing, 3 days stay below freezing all day and snowfall averages 5.4 inches.
Snow falls on 3 days in a normal December, and an inch or more covers the ground on 3 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014734.
How humid and windy is Newark in December?
At 3 p.m. the normal temperature is 40°F with 51% relative humidity and a dew point of 24°F; at 6 a.m. it is 33°F with 69% humidity. The wind averages 10.6 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 33°F | 23°F | 69% | 9.1 mph | 36% |
| 9 a.m. | 34°F | 24°F | 65% | 10.8 mph | 24% |
| noon | 39°F | 24°F | 55% | 12.3 mph | 20% |
| 3 p.m. | 40°F | 24°F | 51% | 12.6 mph | 21% |
| 6 p.m. | 37°F | 23°F | 57% | 10.9 mph | 33% |
| 9 p.m. | 35°F | 23°F | 61% | 10.4 mph | 34% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014734. 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 December in Newark?
The warmest December temperature on Newark's official record (since 1843) is 76°F, on December 7, 1998; the coldest is −13°F, on December 30, 1917. The wettest December brought 9.47 in (1983); the snowiest, 29.1 inches (1947).
The December mean against the 1991-2020 normal of 38.0°F: 2021 44.5°F (+6.5), 2022 38.3°F (+0.3), 2023 44.3°F (+6.3), 2024 37.9°F (−0.1), 2025 33.2°F (−4.8). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 44.5°F | +6.5°F | 1.28 in |
| 2022 | 38.3°F | +0.3°F | 4.53 in |
| 2023 | 44.3°F | +6.3°F | 7.55 in |
| 2024 | 37.9°F | −0.1°F | 4.39 in |
| 2025 | 33.2°F | −4.8°F | 3.13 in |
Source: records: ACIS, NWS threaded record EWRthr; recent months: ACIS, station USW00014734. Records and recent months use complete months only.
How does December in Newark compare across New Jersey?
Across the 33 places PlainClimate covers in New Jersey, December normal highs run from 41°F in Sussex to 51°F in Belleplain; Newark's is 45°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.