Keene weather in December: Keene, New Hampshire: normal highs, lows, rain and records for December
Keene in December has a normal high of 36°F and a normal low of 18°F, a daily mean of 27°F, falling from 41°F on the 1st to 32°F by the 31st. Measurable precipitation falls on 12 days in a normal December, 3.92 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 2°C and low of −8°C, 100 mm of precipitation and 37 cm of snow in December.
- NOAA stationKeene
- Station IDUSC00274399
- Location42.94°N 72.32°W
- Elevation511 ft (156 m)
- From the center1 miles
- Population23,036
- Jan 30° 10°
- Feb 34° 11°
- Mar 43° 20°
- Apr 57° 30°
- May 69° 41°
- Jun 77° 51°
- Jul 82° 56°
- Aug 81° 54°
- Sep 73° 47°
- Oct 60° 36°
- Nov 47° 27°
- Dec 36° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Keene in December?
The normal high is 36°F and the normal low 18°F, for a daily mean of 26.7°F. December is 10.0°F cooler than November and 6.3°F warmer than January. December is the 10th warmest month of the year in Keene and the 6th wettest. Across the month the normal high falls 9°F, from 41°F on December 1 to 32°F on December 31. From one year to the next December's mean temperature typically moves about 3.8°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 23°F and 31°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 | 41°F | 22°F | 39% | 23% |
| December 8 | 38°F | 20°F | 38% | 24% |
| December 15 | 36°F | 18°F | 38% | 24% |
| December 22 | 34°F | 16°F | 39% | 24% |
| December 31 | 32°F | 13°F | 39% | 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 | 41°F | 22°F | 39% | 23% | 9 h 20 min |
| December 2 | 40°F | 22°F | 39% | 23% | 9 h 20 min |
| December 3 | 40°F | 22°F | 39% | 23% | 9 h 10 min |
| December 4 | 40°F | 22°F | 39% | 23% | 9 h 10 min |
| December 5 | 39°F | 21°F | 39% | 23% | 9 h 10 min |
| December 6 | 39°F | 21°F | 39% | 23% | 9 h 10 min |
| December 7 | 38°F | 21°F | 38% | 24% | 9 h 10 min |
| December 8 | 38°F | 20°F | 38% | 24% | 9 h 10 min |
| December 9 | 38°F | 20°F | 38% | 24% | 9 h 10 min |
| December 10 | 37°F | 20°F | 38% | 24% | 9 h 10 min |
| December 11 | 37°F | 19°F | 38% | 24% | 9 h 10 min |
| December 12 | 37°F | 19°F | 38% | 24% | 9 h |
| December 13 | 36°F | 19°F | 38% | 24% | 9 h |
| December 14 | 36°F | 18°F | 38% | 24% | 9 h |
| December 15 | 36°F | 18°F | 38% | 24% | 9 h |
| December 16 | 35°F | 18°F | 39% | 24% | 9 h |
| December 17 | 35°F | 17°F | 39% | 24% | 9 h |
| December 18 | 35°F | 17°F | 39% | 24% | 9 h |
| December 19 | 34°F | 17°F | 39% | 24% | 9 h |
| December 20 | 34°F | 17°F | 39% | 24% | 9 h |
| December 21 | 34°F | 16°F | 39% | 24% | 9 h |
| December 22 | 34°F | 16°F | 39% | 24% | 9 h |
| December 23 | 33°F | 16°F | 39% | 24% | 9 h |
| December 24 | 33°F | 15°F | 39% | 25% | 9 h |
| December 25 | 33°F | 15°F | 39% | 25% | 9 h |
| December 26 | 33°F | 15°F | 39% | 25% | 9 h |
| December 27 | 32°F | 15°F | 39% | 25% | 9 h |
| December 28 | 32°F | 14°F | 39% | 25% | 9 h |
| December 29 | 32°F | 14°F | 39% | 25% | 9 h |
| December 30 | 32°F | 14°F | 39% | 25% | 9 h |
| December 31 | 32°F | 13°F | 39% | 25% | 9 h |
- Normal high
- 36°FDecember average
- Normal low
- 18°FDecember average
- Precipitation
- 3.92 inmonth total
- Days with precipitation
- 120.01 inch or more
- Snowfall
- 14.4 inmonth total
- Nights at 32°F or colder
- 29
- 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 USC00274399; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Keene in December?
On a given December day the chance of 0.01 inch or more is 39% on average, highest around December 22 (39%). In all, 3.92 in falls on 12 days of a normal December, 1 of them with an inch or more.
In a normal December in Keene, 29 nights fall to freezing, 10 days stay below freezing all day and snowfall averages 14.4 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 USC00274399.
What are the records for December in Keene?
The warmest December temperature on this station's record (since 1893) is 70°F, on December 8, 1998; the coldest is −29°F, on December 30, 1933. The wettest December brought 8.86 in (1973); the snowiest, 32.5 inches (2007).
The December mean against the 1991-2020 normal of 26.7°F: 2021 31.0°F (+4.3), 2022 28.8°F (+2.1), 2023 33.9°F (+7.2), 2024 25.9°F (−0.8), 2025 21.8°F (−4.9). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 31.0°F | +4.3°F | 3.52 in |
| 2022 | 28.8°F | +2.1°F | 4.56 in |
| 2023 | 33.9°F | +7.2°F | 5.11 in |
| 2024 | 25.9°F | −0.8°F | 3.80 in |
| 2025 | 21.8°F | −4.9°F | 3.34 in |
Source: records: ACIS, station USC00274399; recent months: ACIS, station USC00274399. Records and recent months use complete months only.
How does December in Keene 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; Keene's is 36°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.