Nashua, NH weather in December
Expect cold, snowy weather in Nashua in December, with highs near 39°F and lows near 20°F. Rain or snow falls on about 12 days. Snowfall averages about 13.4 in. Pack for snow.
- Normal high
- 39°F
- Normal low
- 20°F
- Wet days
- 12
- 4.3 in total
- Snowfall
- 13.4 in
- snow on the ground 15 days
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 44°F | 35°F |
| Normal low | 24°F | 16°F |
| Chance of a wet day | 39% | 39% |
| Sunrise / sunset | 6:56 am / 4:13 pm | 7:16 am / 4:21 pm |
| Daylight | 9.3 h | 9.1 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical December day
- 6 am28°Fdew point 21°F
- 9 am30°Fdew point 21°F
- Noon35°Fdew point 22°F
- 3 pm37°Fdew point 22°F
- 6 pm33°Fdew point 22°F
- 9 pm31°Fdew point 22°F
NOAA hourly normals (local standard time) from Manchester Airport (12 mi away); average wind 7 mph; clear or few clouds in 49% of daytime hours, mostly cloudy or overcast in 46%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow12 of 31
- Notable rainat least 0.10 in8 of 31
- Freezing nightslow 32°F or below29 of 31
- Snow on the groundsnow depth 1 in or more15 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain and snow in December
Normal precipitation is 4.3 in; a dry December brings about 3.5 in and a wet one about 5.2 in (25th and 75th percentiles). About 4 days bring half an inch or more, and about 1 an inch or more. Normal snowfall is 13.4 in, with about 3 days of an inch or more.
How December varies from year to year
- Warmest December, 1991-20202015: average high 47°F
- Coolest December2017: average high 33°F
- Wettest December2020: 7.3 in
- Driest December1998: 1.2 in
- Highest reading74°F (December 8, 1998)
- Lowest reading-11°F (December 29, 2017)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
December compared with November and January
| November | December | January | |
|---|---|---|---|
| Normal high | 49°F | 39°F | 34°F |
| Normal low | 28°F | 20°F | 13°F |
| Wet days | 11 | 12 | 12 |
| Comfortable days | 2 | 0 | 0 |
| Daylight | 9.8 h | 9.1 h | 9.4 h |
Highs change by -10°F from November and -5°F into January.
Nearby alternatives in December
- Warmer: New Bedford, MA83 mi · high 44°F · 12 wet days
- Cooler: Stowe, VT132 mi · high 32°F · 15 wet days
How Nashua ranks in December
- Normal high293rd warmest of 378 cities; 1st of 4 in New Hampshire
- Wet days304th driest of 378
- Comfortable days245th most of 340
What to pack for Nashua in December
- A warm jacket – lows near 20°F, highs near 39°F
- A rain jacket or umbrella – rain or snow on about 12 days
- Waterproof boots – snow on the ground on about 15 days
- A hat and gloves – about 29 freezing nights
Heating and cooling
December has 1107 heating degree days and 0 cooling degree days (base 65°F), 15% of the year's total heating and cooling demand.
Questions
How cold is Nashua in December?
The normal high is 39°F and the normal low is 20°F. From 1991 to 2020 the coldest December reading was -11°F (December 29, 2017).
Does it rain a lot in Nashua in December?
About 12 days in December have at least 0.01 in of precipitation, and the normal total is 4.4 in. The wettest December in 1991-2020 was in 2020 (7.3 in); the driest was in 1998 (1.2 in).
Does it snow in Nashua in December?
Yes. Normal snowfall in December is 13.4 in, and snow covers the ground on about 15 days.
Is December a good time to visit Nashua?
December ranks 11th of 12 months on our comfort score for Nashua (28 out of 100). It has almost no comfortable days. The best months are May and September.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Hudson 1 Sse (USC00274234), 3.0 mi ENE of the city center, 185 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Nashua 2 Nnw (USC00275712), 1.8 mi N of the city center, 135 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Manchester Airport (USW00014710), 12 mi N of the city center, 225 ft (66 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Concord Muni Airport (USW00014745), 30 mi N of the city center, 346 ft (187 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Manchester Airport (743945-14710), 12 mi N of the city center, 229 ft (70 ft higher than the city). Hourly observations, 1991-2020.