Lebanon weather in December: Lebanon, Tennessee: normal highs, lows, rain and records for December
Lebanon in December has a normal high of 51°F and a normal low of 31°F, a daily mean of 41°F, falling from 55°F on the 1st to 48°F by the 31st. Measurable precipitation falls on 11 days in a normal December, 5.16 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 10°C and low of 0°C, 131 mm of precipitation in December.
- NOAA stationLebanon
- Station IDUSC00405108
- Location36.23°N 86.32°W
- Elevation525 ft (160 m)
- Population51,501
- Jan 47° 28°
- Feb 52° 30°
- Mar 61° 38°
- Apr 71° 46°
- May 79° 56°
- Jun 87° 65°
- Jul 90° 69°
- Aug 90° 67°
- Sep 84° 60°
- Oct 73° 47°
- Nov 61° 37°
- Dec 51° 31°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lebanon in December?
The normal high is 51°F and the normal low 31°F, for a daily mean of 40.9°F. December is 7.8°F cooler than November and 3.3°F warmer than January. December is the 11th warmest month of the year in Lebanon and the 2nd wettest. Across the month the normal high falls 7°F, from 55°F on December 1 to 48°F on December 31. From one year to the next December's mean temperature typically moves about 4.0°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 37°F and 45°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 37%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 55°F | 34°F | 34% | 24% |
| December 8 | 53°F | 32°F | 36% | 25% |
| December 15 | 51°F | 31°F | 37% | 26% |
| December 22 | 49°F | 30°F | 37% | 26% |
| December 31 | 48°F | 29°F | 37% | 25% |
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 | 55°F | 34°F | 34% | 24% | 9 h 50 min |
| December 2 | 54°F | 33°F | 34% | 24% | 9 h 50 min |
| December 3 | 54°F | 33°F | 34% | 24% | 9 h 50 min |
| December 4 | 54°F | 33°F | 35% | 24% | 9 h 50 min |
| December 5 | 53°F | 33°F | 35% | 25% | 9 h 50 min |
| December 6 | 53°F | 33°F | 35% | 25% | 9 h 50 min |
| December 7 | 53°F | 33°F | 35% | 25% | 9 h 50 min |
| December 8 | 53°F | 32°F | 36% | 25% | 9 h 50 min |
| December 9 | 52°F | 32°F | 36% | 25% | 9 h 50 min |
| December 10 | 52°F | 32°F | 36% | 25% | 9 h 50 min |
| December 11 | 52°F | 32°F | 36% | 25% | 9 h 40 min |
| December 12 | 51°F | 32°F | 36% | 25% | 9 h 40 min |
| December 13 | 51°F | 32°F | 36% | 26% | 9 h 40 min |
| December 14 | 51°F | 31°F | 37% | 26% | 9 h 40 min |
| December 15 | 51°F | 31°F | 37% | 26% | 9 h 40 min |
| December 16 | 50°F | 31°F | 37% | 26% | 9 h 40 min |
| December 17 | 50°F | 31°F | 37% | 26% | 9 h 40 min |
| December 18 | 50°F | 31°F | 37% | 26% | 9 h 40 min |
| December 19 | 50°F | 31°F | 37% | 26% | 9 h 40 min |
| December 20 | 50°F | 30°F | 37% | 26% | 9 h 40 min |
| December 21 | 49°F | 30°F | 37% | 26% | 9 h 40 min |
| December 22 | 49°F | 30°F | 37% | 26% | 9 h 40 min |
| December 23 | 49°F | 30°F | 37% | 26% | 9 h 40 min |
| December 24 | 49°F | 30°F | 37% | 26% | 9 h 40 min |
| December 25 | 49°F | 30°F | 37% | 26% | 9 h 40 min |
| December 26 | 49°F | 30°F | 37% | 26% | 9 h 40 min |
| December 27 | 48°F | 30°F | 37% | 26% | 9 h 40 min |
| December 28 | 48°F | 29°F | 37% | 26% | 9 h 40 min |
| December 29 | 48°F | 29°F | 37% | 26% | 9 h 40 min |
| December 30 | 48°F | 29°F | 37% | 25% | 9 h 40 min |
| December 31 | 48°F | 29°F | 37% | 25% | 9 h 40 min |
- Normal high
- 51°FDecember average
- Normal low
- 31°FDecember average
- Precipitation
- 5.16 inmonth total
- Days with precipitation
- 110.01 inch or more
- Nights at 32°F or colder
- 20
- Daylight
- 9 h 50 min to 9 h 40 minDecember 1 to December 31
- Days at 70°F or more
- 1
- Sunshine
- 64%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00405108; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lebanon in December?
On a given December day the chance of 0.01 inch or more is 36% on average, highest around December 23 (37%). In all, 5.16 in falls on 11 days of a normal December, 1 of them with an inch or more.
In a normal December in Lebanon, 20 nights fall to freezing and 2 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00405108.
What are the records for December in Lebanon?
The warmest December temperature on this station's record (since 1902) is 79°F, on December 7, 1998; the coldest is −11°F, on December 23, 1989. The wettest December brought 14.62 in (1926); the snowiest, 10.0 inches (1917).
The December mean against the 1991-2020 normal of 40.9°F: 2024 42.9°F (+2.0), 2025 41.9°F (+1.0). 2 of 2 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2024 | 42.9°F | +2.0°F | 4.21 in |
| 2025 | 41.9°F | +1.0°F | 2.51 in |
Source: records: ACIS, station USC00405108; recent months: ACIS, station USC00405108. Records and recent months use complete months only.
How does December in Lebanon compare across Tennessee?
Across the 116 places PlainClimate covers in Tennessee, December normal highs run from 47°F in Monterey to 55°F in Ardmore; Lebanon's is 51°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.