York weather in December: York, Pennsylvania: normal highs, lows, rain and records for December
York in December has a normal high of 44°F and a normal low of 25°F, a daily mean of 35°F, falling from 48°F on the 1st to 40°F by the 31st. Measurable precipitation falls on 10 days in a normal December, 3.06 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 7°C and low of −4°C, 78 mm of precipitation in December.
- NOAA stationYork Airport
- Station IDUSW00093778
- Location39.92°N 76.87°W
- Elevation486 ft (148 m)
- From the center8 miles
- Population45,241
- Jan 39° 21°
- Feb 42° 22°
- Mar 51° 29°
- Apr 63° 39°
- May 73° 50°
- Jun 81° 59°
- Jul 85° 63°
- Aug 84° 61°
- Sep 77° 54°
- Oct 66° 42°
- Nov 54° 33°
- Dec 44° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is York in December?
The normal high is 44°F and the normal low 25°F, for a daily mean of 34.5°F. December is 9.0°F cooler than November and 4.4°F warmer than January. December is the 10th warmest month of the year in York and the 10th wettest. Across the month the normal high falls 8°F, from 48°F on December 1 to 40°F on December 31. From one year to the next December's mean temperature typically moves about 4.3°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 30°F and 39°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 48°F | 29°F | 33% | 21% |
| December 8 | 46°F | 27°F | 33% | 21% |
| December 15 | 44°F | 25°F | 32% | 20% |
| December 22 | 42°F | 24°F | 31% | 20% |
| December 31 | 40°F | 22°F | 31% | 19% |
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 | 48°F | 29°F | 33% | 21% | 9 h 30 min |
| December 2 | 48°F | 28°F | 33% | 21% | 9 h 30 min |
| December 3 | 48°F | 28°F | 33% | 21% | 9 h 30 min |
| December 4 | 47°F | 28°F | 33% | 21% | 9 h 30 min |
| December 5 | 47°F | 28°F | 33% | 21% | 9 h 30 min |
| December 6 | 47°F | 27°F | 33% | 21% | 9 h 30 min |
| December 7 | 46°F | 27°F | 33% | 21% | 9 h 30 min |
| December 8 | 46°F | 27°F | 33% | 21% | 9 h 30 min |
| December 9 | 46°F | 27°F | 33% | 21% | 9 h 30 min |
| December 10 | 45°F | 26°F | 33% | 21% | 9 h 20 min |
| December 11 | 45°F | 26°F | 32% | 21% | 9 h 20 min |
| December 12 | 45°F | 26°F | 32% | 20% | 9 h 20 min |
| December 13 | 44°F | 26°F | 32% | 20% | 9 h 20 min |
| December 14 | 44°F | 26°F | 32% | 20% | 9 h 20 min |
| December 15 | 44°F | 25°F | 32% | 20% | 9 h 20 min |
| December 16 | 44°F | 25°F | 32% | 20% | 9 h 20 min |
| December 17 | 43°F | 25°F | 32% | 20% | 9 h 20 min |
| December 18 | 43°F | 25°F | 32% | 20% | 9 h 20 min |
| December 19 | 43°F | 24°F | 32% | 20% | 9 h 20 min |
| December 20 | 43°F | 24°F | 31% | 20% | 9 h 20 min |
| December 21 | 42°F | 24°F | 31% | 20% | 9 h 20 min |
| December 22 | 42°F | 24°F | 31% | 20% | 9 h 20 min |
| December 23 | 42°F | 24°F | 31% | 20% | 9 h 20 min |
| December 24 | 42°F | 24°F | 31% | 20% | 9 h 20 min |
| December 25 | 41°F | 23°F | 31% | 19% | 9 h 20 min |
| December 26 | 41°F | 23°F | 31% | 19% | 9 h 20 min |
| December 27 | 41°F | 23°F | 31% | 19% | 9 h 20 min |
| December 28 | 41°F | 23°F | 31% | 19% | 9 h 20 min |
| December 29 | 41°F | 23°F | 31% | 19% | 9 h 20 min |
| December 30 | 41°F | 23°F | 31% | 19% | 9 h 20 min |
| December 31 | 40°F | 22°F | 31% | 19% | 9 h 20 min |
- Normal high
- 44°FDecember average
- Normal low
- 25°FDecember average
- Precipitation
- 3.06 inmonth total
- Days with precipitation
- 100.01 inch or more
- Nights at 32°F or colder
- 25
- Daylight
- 9 h 30 min to 9 h 20 minDecember 1 to December 31
- Days at 70°F or more
- 1
- Sunshine
- 67%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093778; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in York in December?
On a given December day the chance of 0.01 inch or more is 32% on average, highest around December 6 (33%). In all, 3.06 in falls on 10 days of a normal December, 1 of them with an inch or more.
In a normal December in York, 25 nights fall to freezing and 4 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093778.
What are the records for December in York?
The warmest December temperature on this station's record (since 1997) is 78°F, on December 1, 1998; the coldest is −10°F, on December 7, 2002. The wettest December brought 5.27 in (2008).
The December mean against the 1991-2020 normal of 34.5°F: 2021 40.1°F (+5.6), 2022 33.6°F (−0.9), 2023 39.2°F (+4.7), 2024 35.3°F (+0.8), 2025 30.3°F (−4.2). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 40.1°F | +5.6°F | 0.74 in |
| 2022 | 33.6°F | −0.9°F | 3.90 in |
| 2023 | 39.2°F | +4.7°F | 4.80 in |
| 2024 | 35.3°F | +0.8°F | 3.18 in |
| 2025 | 30.3°F | −4.2°F | 1.84 in |
Source: records: ACIS, station USW00093778; recent months: ACIS, station USW00093778. Records and recent months use complete months only.
How does December in York compare across Pennsylvania?
Across the 108 places PlainClimate covers in Pennsylvania, December normal highs run from 34°F in Laporte to 48°F in Marcus Hook; York's is 44°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.