Danbury weather in December: Danbury, Connecticut: normal highs, lows, rain and records for December
Danbury in December has a normal high of 41°F and a normal low of 24°F, a daily mean of 32°F, falling from 45°F on the 1st to 37°F by the 31st. Measurable precipitation falls on 12 days in a normal December, 4.24 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 5°C and low of −5°C, 108 mm of precipitation in December.
- NOAA stationDanbury Municipal Airport
- Station IDUSW00054734
- Location41.37°N 73.48°W
- Elevation457 ft (139 m)
- From the center2 miles
- Population88,692
- Jan 36° 18°
- Feb 39° 20°
- Mar 47° 27°
- Apr 59° 37°
- May 69° 46°
- Jun 78° 56°
- Jul 82° 62°
- Aug 80° 60°
- Sep 74° 52°
- Oct 62° 41°
- Nov 51° 31°
- Dec 41° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Danbury in December?
The normal high is 41°F and the normal low 24°F, for a daily mean of 32.4°F. December is 8.8°F cooler than November and 5.4°F warmer than January. December is the 10th warmest month of the year in Danbury and the 6th wettest. Across the month the normal high falls 8°F, from 45°F on December 1 to 37°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 29°F and 36°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 45°F | 28°F | 39% | 23% |
| December 8 | 43°F | 26°F | 39% | 23% |
| December 15 | 41°F | 24°F | 39% | 23% |
| December 22 | 39°F | 22°F | 38% | 23% |
| December 31 | 37°F | 20°F | 37% | 23% |
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 | 45°F | 28°F | 39% | 23% | 9 h 30 min |
| December 2 | 45°F | 27°F | 39% | 23% | 9 h 20 min |
| December 3 | 45°F | 27°F | 39% | 23% | 9 h 20 min |
| December 4 | 44°F | 27°F | 39% | 23% | 9 h 20 min |
| December 5 | 44°F | 27°F | 39% | 23% | 9 h 20 min |
| December 6 | 44°F | 26°F | 39% | 23% | 9 h 20 min |
| December 7 | 43°F | 26°F | 39% | 23% | 9 h 20 min |
| December 8 | 43°F | 26°F | 39% | 23% | 9 h 20 min |
| December 9 | 43°F | 26°F | 39% | 23% | 9 h 20 min |
| December 10 | 42°F | 25°F | 39% | 23% | 9 h 20 min |
| December 11 | 42°F | 25°F | 39% | 23% | 9 h 20 min |
| December 12 | 42°F | 25°F | 39% | 23% | 9 h 10 min |
| December 13 | 41°F | 25°F | 39% | 23% | 9 h 10 min |
| December 14 | 41°F | 24°F | 39% | 23% | 9 h 10 min |
| December 15 | 41°F | 24°F | 39% | 23% | 9 h 10 min |
| December 16 | 41°F | 24°F | 39% | 23% | 9 h 10 min |
| December 17 | 40°F | 24°F | 39% | 23% | 9 h 10 min |
| December 18 | 40°F | 23°F | 38% | 23% | 9 h 10 min |
| December 19 | 40°F | 23°F | 38% | 23% | 9 h 10 min |
| December 20 | 40°F | 23°F | 38% | 23% | 9 h 10 min |
| December 21 | 39°F | 23°F | 38% | 23% | 9 h 10 min |
| December 22 | 39°F | 22°F | 38% | 23% | 9 h 10 min |
| December 23 | 39°F | 22°F | 38% | 23% | 9 h 10 min |
| December 24 | 39°F | 22°F | 38% | 23% | 9 h 10 min |
| December 25 | 38°F | 22°F | 38% | 23% | 9 h 10 min |
| December 26 | 38°F | 22°F | 38% | 23% | 9 h 10 min |
| December 27 | 38°F | 21°F | 38% | 23% | 9 h 10 min |
| December 28 | 38°F | 21°F | 38% | 23% | 9 h 10 min |
| December 29 | 38°F | 21°F | 38% | 23% | 9 h 10 min |
| December 30 | 37°F | 21°F | 37% | 23% | 9 h 10 min |
| December 31 | 37°F | 20°F | 37% | 23% | 9 h 10 min |
- Normal high
- 41°FDecember average
- Normal low
- 24°FDecember average
- Precipitation
- 4.24 inmonth total
- Days with precipitation
- 120.01 inch or more
- Nights at 32°F or colder
- 25
- Daylight
- 9 h 30 min to 9 h 10 minDecember 1 to December 31
- Sunshine
- 65%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00054734; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Danbury in December?
On a given December day the chance of 0.01 inch or more is 38% on average, highest around December 7 (39%). In all, 4.24 in falls on 12 days of a normal December, 1 of them with an inch or more.
In a normal December in Danbury, 25 nights fall to freezing and 6 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00054734.
What are the records for December in Danbury?
The warmest December temperature on this station's record (since 1998) is 74°F, on December 7, 1998; the coldest is −4°F, on December 15, 2005. The wettest December brought 8.07 in (2023).
The December mean against the 1991-2020 normal of 32.4°F: 2021 39.7°F (+7.3), 2022 34.5°F (+2.1), 2023 39.7°F (+7.3), 2024 33.1°F (+0.7), 2025 29.8°F (−2.6). 4 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 39.7°F | +7.3°F | 1.24 in |
| 2022 | 34.5°F | +2.1°F | 4.10 in |
| 2023 | 39.7°F | +7.3°F | 8.07 in |
| 2024 | 33.1°F | +0.7°F | 4.44 in |
| 2025 | 29.8°F | −2.6°F | 3.49 in |
Source: records: ACIS, station USW00054734; recent months: ACIS, station USW00054734. Records and recent months use complete months only.
How does December in Danbury compare across Connecticut?
Across the 13 places PlainClimate covers in Connecticut, December normal highs run from 35°F in Norfolk to 44°F in Groton; Danbury's is 41°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.