Climate averages 1991–2020

Plymouth, United States weather
in December.

A freezing month with light precipitation: the 10th warmest and the 3rd driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high -2.5°C Daytime mean, December
Average low -9.6°C Night-time mean, December
Precipitation 34 mm 6 days with ≥1 mm
Daylight 9 h Sunrise to sunset, per day
Every month in Plymouth · average highYear overview

December is a freezing month in Plymouth, United States: daytime highs average -2.5°C and nights cool to about -9.6°C. By daytime temperature it is the 10th warmest of the 12 months.

Expect about 34 mm of precipitation on roughly 6 days, which makes December a month with light precipitation (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 51 min on an average December day.

The nearest other city in this atlas is Brooklyn Park (12 km away). In December its highs average -2.5°C, about as warm as Plymouth, United States, with 35 mm of precipitation.

Among the 498 cities listed in the United States, Plymouth, United States ranks joint 492nd of 498 for the warmest December highs and joint 62nd of 498 for the driest December (precipitation, lowest first). The mean December high of those 498 cities is 10.5°C; Plymouth, United States is 13.1°C cooler than that mean.

From December to January, average highs fall by 3.0°C to -5.5°C, and monthly precipitation falls from 34 mm to 24 mm.

The annual picture

December in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -20-15-10-5051015202530 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly precipitation

Average total · mm
Average monthly precipitation totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Plymouth, United States climate table

1991–2020
Monthly climate averages for Plymouth, United States, 1991–2020
MonthAverage highHigh / lowAverage lowPrecipitation mm/monthWet days ≥1 mm/dayDaylight hours/dayDay­light h/day
January -5.5°C-13.6°C-13.6°C245.89.29 h
February -2.6°C-11.3°C-11.3°C264.910.410 h
March 4.6°C-4.8°C-4.8°C517.811.912 h
April 12.3°C2.3°C2.3°C8110.413.513 h
May 19.2°C9.6°C9.6°C10812.014.815 h
June 24.6°C15.7°C15.7°C11112.315.516 h
July 27.1°C18.5°C18.5°C9010.315.215 h
August 25.9°C17.5°C17.5°C999.814.114 h
September 21.5°C13.3°C13.3°C829.612.613 h
October 13.4°C5.9°C5.9°C668.711.011 h
November 4.6°C-2.0°C-2.0°C486.99.610 h
December, selected -2.5°C-9.6°C-9.6°C346.18.89 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

December in nearby cities

Distance from Plymouth

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Plymouth) is explained once on the Plymouth, United States year overview and on the Sources, method and limits page.