Brockton, MA weather in December
In December, Brockton sees highs around 44°F and lows around 26°F: chilly, with frequent rain and some snow. Expect about 12 wet days. Snowfall averages about 9.2 in.
- Normal high
- 44°F
- Normal low
- 26°F
- Wet days
- 12
- 5.1 in total
- Snowfall
- 9.2 in
- snow on the ground 5 days
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 48°F | 40°F |
| Normal low | 30°F | 23°F |
| Chance of a wet day | 39% | 39% |
| Sunrise / sunset | 6:52 am / 4:13 pm | 7:12 am / 4:21 pm |
| Daylight | 9.3 h | 9.2 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 am32°Fdew point 26°F
- 9 am35°Fdew point 27°F
- Noon40°Fdew point 27°F
- 3 pm40°Fdew point 27°F
- 6 pm36°Fdew point 27°F
- 9 pm34°Fdew point 27°F
NOAA hourly normals (local standard time) from Plymouth Muni Airport (19 mi away); average wind 8 mph; clear or few clouds in 28% of daytime hours, mostly cloudy or overcast in 58%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F1 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 below25 of 31
- Snow on the groundsnow depth 1 in or more5 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain and snow in December
Normal precipitation is 5.1 in; a dry December brings about 3.1 in and a wet one about 6.4 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more. Normal snowfall is 9.2 in, with about 2 days of an inch or more.
How December varies from year to year
- Warmest December, 1991-20202015: average high 54°F
- Coolest December1995: average high 37°F
- Wettest December1992: 10.7 in
- Driest December1998: 1.6 in
- Highest reading78°F (December 7, 1998)
- Lowest reading-1°F (December 25, 1998)
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 | 54°F | 44°F | 39°F |
| Normal low | 34°F | 26°F | 21°F |
| Wet days | 11 | 12 | 11 |
| Comfortable days | 4 | 1 | 0 |
| Daylight | 9.8 h | 9.2 h | 9.5 h |
Highs change by -10°F from November and -5°F into January.
Nearby alternatives in December
- Cooler: Worcester, MA42 mi · high 38°F · 12 wet days
How Brockton ranks in December
- Normal high254th warmest of 378 cities; 4th of 9 in Massachusetts
- Wet days309th driest of 378
- Comfortable days217th most of 340
What to pack for Brockton in December
- A warm jacket – lows near 26°F, highs near 44°F
- A rain jacket or umbrella – rain or snow on about 12 days
- Waterproof boots – about 9.2 in of snow in a typical year
- A hat and gloves – about 25 freezing nights
Heating and cooling
December has 928 heating degree days and 0 cooling degree days (base 65°F), 14% of the year's total heating and cooling demand.
Questions
How cold is Brockton in December?
The normal high is 44°F and the normal low is 26°F. From 1991 to 2020 the coldest December reading was -1°F (December 25, 1998).
Does it rain a lot in Brockton in December?
About 12 days in December have at least 0.01 in of precipitation, and the normal total is 5.1 in. The wettest December in 1991-2020 was in 1992 (10.7 in); the driest was in 1998 (1.6 in).
Does it snow in Brockton in December?
Yes. Normal snowfall in December is 9.2 in, and snow covers the ground on about 5 days.
Is December a good time to visit Brockton?
December ranks 11th of 12 months on our comfort score for Brockton (32 out of 100). It has about 1 comfortable day. The best month is May.
Where the numbers come from
- Temperature, rain, snow depth and frost dates: Brockton (USC00190860), 2.5 mi SSE of the city center, 75 ft . NOAA normals and daily records, 1991-2020.
- Snowfall: Norton W (USC00195984), 9.9 mi SW of the city center, 95 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Plymouth Muni Airport (USW00054769), 19 mi SE of the city center, 149 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Boston Logan Intl Airport (USW00014739), 19 mi N of the city center, 12 ft (101 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Gen E L Logan International Airport (725090-14739), 19 mi N of the city center, 11 ft (102 ft lower than the city). Hourly observations, 1991-2020.