Concord weather in December: Concord, New Hampshire: normal highs, lows, rain and records for December
Concord in December has a normal high of 37°F and a normal low of 20°F, a daily mean of 28°F, falling from 42°F on the 1st to 33°F by the 31st. Measurable precipitation falls on 12 days in a normal December, 3.70 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 3°C and low of −7°C, 94 mm of precipitation and 36 cm of snow in December.
- NOAA stationConcord Municipal Airport
- Station IDUSW00014745
- Location43.20°N 71.50°W
- Elevation346 ft (106 m)
- From the center4 miles
- Population44,674
- Jan 32° 13°
- Feb 35° 15°
- Mar 44° 23°
- Apr 58° 33°
- May 69° 44°
- Jun 78° 54°
- Jul 83° 59°
- Aug 82° 57°
- Sep 74° 49°
- Oct 61° 38°
- Nov 48° 29°
- Dec 37° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Concord in December?
The normal high is 37°F and the normal low 20°F, for a daily mean of 28.3°F. December is 10.3°F cooler than November and 6.0°F warmer than January. December is the 10th warmest month of the year in Concord and the 3rd wettest. Across the month the normal high falls 9°F, from 42°F on December 1 to 33°F on December 31. From one year to the next December's mean temperature typically moves about 3.6°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 25°F and 32°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 | 42°F | 24°F | 39% | 23% |
| December 8 | 39°F | 22°F | 39% | 23% |
| December 15 | 37°F | 20°F | 39% | 23% |
| December 22 | 35°F | 18°F | 39% | 23% |
| December 31 | 33°F | 16°F | 38% | 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 | 42°F | 24°F | 39% | 23% | 9 h 20 min |
| December 2 | 42°F | 24°F | 39% | 23% | 9 h 10 min |
| December 3 | 41°F | 23°F | 39% | 23% | 9 h 10 min |
| December 4 | 41°F | 23°F | 39% | 23% | 9 h 10 min |
| December 5 | 41°F | 23°F | 39% | 23% | 9 h 10 min |
| December 6 | 40°F | 22°F | 39% | 23% | 9 h 10 min |
| December 7 | 40°F | 22°F | 39% | 23% | 9 h 10 min |
| December 8 | 39°F | 22°F | 39% | 23% | 9 h 10 min |
| December 9 | 39°F | 22°F | 39% | 23% | 9 h 10 min |
| December 10 | 39°F | 21°F | 39% | 23% | 9 h |
| December 11 | 38°F | 21°F | 39% | 23% | 9 h |
| December 12 | 38°F | 21°F | 39% | 23% | 9 h |
| December 13 | 38°F | 20°F | 39% | 23% | 9 h |
| December 14 | 37°F | 20°F | 39% | 23% | 9 h |
| December 15 | 37°F | 20°F | 39% | 23% | 9 h |
| December 16 | 37°F | 19°F | 39% | 23% | 9 h |
| December 17 | 37°F | 19°F | 39% | 23% | 9 h |
| December 18 | 36°F | 19°F | 39% | 23% | 9 h |
| December 19 | 36°F | 19°F | 39% | 23% | 9 h |
| December 20 | 36°F | 18°F | 39% | 23% | 9 h |
| December 21 | 36°F | 18°F | 39% | 23% | 9 h |
| December 22 | 35°F | 18°F | 39% | 23% | 9 h |
| December 23 | 35°F | 18°F | 39% | 23% | 9 h |
| December 24 | 35°F | 17°F | 39% | 23% | 9 h |
| December 25 | 35°F | 17°F | 39% | 22% | 9 h |
| December 26 | 34°F | 17°F | 39% | 22% | 9 h |
| December 27 | 34°F | 16°F | 39% | 22% | 9 h |
| December 28 | 34°F | 16°F | 39% | 22% | 9 h |
| December 29 | 34°F | 16°F | 39% | 22% | 9 h |
| December 30 | 33°F | 16°F | 38% | 22% | 9 h |
| December 31 | 33°F | 16°F | 38% | 22% | 9 h |
- Normal high
- 37°FDecember average
- Normal low
- 20°FDecember average
- Precipitation
- 3.70 inmonth total
- Days with precipitation
- 120.01 inch or more
- Snowfall
- 14.3 inmonth total
- Nights at 32°F or colder
- 28
- Daylight
- 9 h 20 min to 9 hDecember 1 to December 31
- Sunshine
- 62%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014745; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Concord in December?
On a given December day the chance of 0.01 inch or more is 39% on average, highest around December 15 (39%). In all, 3.70 in falls on 12 days of a normal December, 1 of them with an inch or more.
In a normal December in Concord, 28 nights fall to freezing, 10 days stay below freezing all day and snowfall averages 14.3 inches.
Snow falls on 6 days in a normal December, and an inch or more covers the ground on 17 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014745.
How humid and windy is Concord in December?
At 3 p.m. the normal temperature is 31°F with 55% relative humidity and a dew point of 17°F; at 6 a.m. it is 22°F with 77% humidity. The wind averages 6.4 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. | 22°F | 16°F | 77% | 5.2 mph | 49% |
| 9 a.m. | 24°F | 16°F | 73% | 5.9 mph | 53% |
| noon | 30°F | 17°F | 59% | 8.8 mph | 51% |
| 3 p.m. | 31°F | 17°F | 55% | 8.9 mph | 49% |
| 6 p.m. | 27°F | 17°F | 64% | 6.3 mph | 55% |
| 9 p.m. | 25°F | 16°F | 70% | 6.0 mph | 57% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014745. 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 Concord?
The warmest December temperature on Concord's official record (since 1868) is 73°F, on December 7, 1998; the coldest is −24°F, on December 20, 1875. The wettest December brought 7.64 in (1936); the snowiest, 44.5 inches (2007).
The December mean against the 1991-2020 normal of 28.3°F: 2021 31.4°F (+3.1), 2022 30.5°F (+2.2), 2023 35.1°F (+6.8), 2024 27.7°F (−0.6), 2025 23.1°F (−5.2). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 31.4°F | +3.1°F | 3.99 in |
| 2022 | 30.5°F | +2.2°F | 4.02 in |
| 2023 | 35.1°F | +6.8°F | 6.93 in |
| 2024 | 27.7°F | −0.6°F | 3.42 in |
| 2025 | 23.1°F | −5.2°F | 3.37 in |
Source: records: ACIS, NWS threaded record CONthr; recent months: ACIS, station USW00014745. Records and recent months use complete months only.
How does December in Concord compare across New Hampshire?
Across the 28 places PlainClimate covers in New Hampshire, December normal highs run from 30°F in Colebrook to 40°F in Nashua; Concord's is 37°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.