Chattanooga weather in December: Chattanooga, Tennessee: normal highs, lows, rain and records for December
Chattanooga in December has a normal high of 53°F and a normal low of 35°F, a daily mean of 44°F, falling from 57°F on the 1st to 51°F by the 31st. Measurable precipitation falls on 11 days in a normal December, 5.25 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 12°C and low of 2°C, 133 mm of precipitation and 1 cm of snow in December.
- NOAA stationChattanooga Airport
- Station IDUSW00013882
- Location35.03°N 85.20°W
- Elevation671 ft (205 m)
- From the center4 miles
- Population191,496
- Jan 51° 32°
- Feb 56° 36°
- Mar 64° 42°
- Apr 74° 50°
- May 81° 59°
- Jun 88° 67°
- Jul 91° 71°
- Aug 90° 70°
- Sep 84° 64°
- Oct 74° 51°
- Nov 62° 40°
- Dec 53° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Chattanooga in December?
The normal high is 53°F and the normal low 35°F, for a daily mean of 44.3°F. December is 6.9°F cooler than November and 2.6°F warmer than January. December is the 11th warmest month of the year in Chattanooga and the 2nd wettest. Across the month the normal high falls 6°F, from 57°F on December 1 to 51°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 40°F and 48°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 | 57°F | 37°F | 34% | 24% |
| December 8 | 55°F | 36°F | 35% | 25% |
| December 15 | 53°F | 36°F | 37% | 25% |
| December 22 | 52°F | 35°F | 37% | 25% |
| December 31 | 51°F | 33°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 | 57°F | 37°F | 34% | 24% | 10 h |
| December 2 | 56°F | 37°F | 34% | 24% | 10 h |
| December 3 | 56°F | 37°F | 34% | 24% | 10 h |
| December 4 | 56°F | 37°F | 34% | 24% | 10 h |
| December 5 | 55°F | 37°F | 35% | 24% | 10 h |
| December 6 | 55°F | 37°F | 35% | 24% | 9 h 50 min |
| December 7 | 55°F | 36°F | 35% | 25% | 9 h 50 min |
| December 8 | 55°F | 36°F | 35% | 25% | 9 h 50 min |
| December 9 | 54°F | 36°F | 35% | 25% | 9 h 50 min |
| December 10 | 54°F | 36°F | 36% | 25% | 9 h 50 min |
| December 11 | 54°F | 36°F | 36% | 25% | 9 h 50 min |
| December 12 | 54°F | 36°F | 36% | 25% | 9 h 50 min |
| December 13 | 54°F | 36°F | 36% | 25% | 9 h 50 min |
| December 14 | 53°F | 36°F | 36% | 25% | 9 h 50 min |
| December 15 | 53°F | 36°F | 37% | 25% | 9 h 50 min |
| December 16 | 53°F | 35°F | 37% | 25% | 9 h 50 min |
| December 17 | 53°F | 35°F | 37% | 25% | 9 h 50 min |
| December 18 | 53°F | 35°F | 37% | 25% | 9 h 50 min |
| December 19 | 52°F | 35°F | 37% | 25% | 9 h 50 min |
| December 20 | 52°F | 35°F | 37% | 25% | 9 h 50 min |
| December 21 | 52°F | 35°F | 37% | 25% | 9 h 50 min |
| December 22 | 52°F | 35°F | 37% | 25% | 9 h 50 min |
| December 23 | 52°F | 35°F | 37% | 25% | 9 h 50 min |
| December 24 | 52°F | 34°F | 37% | 25% | 9 h 50 min |
| December 25 | 52°F | 34°F | 37% | 25% | 9 h 50 min |
| December 26 | 51°F | 34°F | 37% | 25% | 9 h 50 min |
| December 27 | 51°F | 34°F | 37% | 25% | 9 h 50 min |
| December 28 | 51°F | 34°F | 37% | 25% | 9 h 50 min |
| December 29 | 51°F | 34°F | 37% | 25% | 9 h 50 min |
| December 30 | 51°F | 34°F | 37% | 25% | 9 h 50 min |
| December 31 | 51°F | 33°F | 37% | 25% | 9 h 50 min |
- Normal high
- 53°FDecember average
- Normal low
- 35°FDecember average
- Precipitation
- 5.25 inmonth total
- Days with precipitation
- 110.01 inch or more
- Snowfall
- 0.3 inmonth total
- Nights at 32°F or colder
- 15
- Daylight
- 10 h to 9 h 50 minDecember 1 to December 31
- Days at 70°F or more
- 2
- Sunshine
- 65%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013882; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Chattanooga in December?
On a given December day the chance of 0.01 inch or more is 36% on average, highest around December 22 (37%). In all, 5.25 in falls on 11 days of a normal December, 2 of them with an inch or more.
In a normal December in Chattanooga, 15 nights fall to freezing, 1 days stay below freezing all day and snowfall averages 0.3 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013882.
How humid and windy is Chattanooga in December?
At 3 p.m. the normal temperature is 49°F with 54% relative humidity and a dew point of 33°F; at 6 a.m. it is 37°F with 81% humidity. The wind averages 5.4 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 37°F | 32°F | 81% | 4.6 mph | 36% |
| 9 a.m. | 38°F | 33°F | 80% | 4.7 mph | 32% |
| noon | 45°F | 33°F | 63% | 6.7 mph | 34% |
| 3 p.m. | 49°F | 33°F | 54% | 7.2 mph | 33% |
| 6 p.m. | 46°F | 33°F | 60% | 6.0 mph | 38% |
| 9 p.m. | 42°F | 34°F | 72% | 4.6 mph | 42% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013882. 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 Chattanooga?
The warmest December temperature on Chattanooga's official record (since 1879) is 78°F, on December 7, 1951; the coldest is −2°F, on December 13, 1962. The wettest December brought 13.68 in (1961); the snowiest, 14.8 inches (1886).
The December mean against the 1991-2020 normal of 44.3°F: 2021 52.8°F (+8.5), 2022 45.0°F (+0.7), 2023 47.0°F (+2.7), 2024 45.7°F (+1.4), 2025 46.0°F (+1.7). 5 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 52.8°F | +8.5°F | 4.72 in |
| 2022 | 45.0°F | +0.7°F | 6.10 in |
| 2023 | 47.0°F | +2.7°F | 6.19 in |
| 2024 | 45.7°F | +1.4°F | 3.28 in |
| 2025 | 46.0°F | +1.7°F | 1.91 in |
Source: records: ACIS, NWS threaded record CHAthr; recent months: ACIS, station USW00013882. Records and recent months use complete months only.
How does December in Chattanooga 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; Chattanooga's is 53°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Chattanooga in November62°F by day, 40°F at night
- Chattanooga in January51°F by day, 32°F at night
- Chattanooga through the yearEvery month, frost dates, records and recent years
- Tennessee in DecemberThe statewide normal and the warmest and coolest places
- Ardmore: Tennessee's warmest Decembernormal high 55°F