Climate averages 1991–2020

Brockton weather
in January.

A cold, wet month: the coolest and the 8th driest of the year.

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

Average high 2.2°C Daytime mean, January

Average low -5.4°C Night-time mean, January

Rainfall 92 mm 10 days with ≥1 mm

Daylight 9 h Sunrise to sunset, per day

January is a cold month in Brockton: daytime highs average 2.2°C and nights cool to about -5.4°C. By daytime temperature it is the coolest month of the year.

Expect about 92 mm of rain on roughly 10 days, which makes January a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 29 min on an average January day.

The nearest other city in this atlas is Quincy (19 km away). In January its highs average 2.0°C, about as warm as Brockton, with 94 mm of rain.

Among the 498 cities listed in the United States, Brockton ranks joint 386th of 498 for the warmest January highs and joint 371st of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Brockton is 7.2°C cooler than that mean.

From January to February, average highs rise by 1.2°C to 3.4°C, and monthly rainfall falls from 92 mm to 81 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

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

Every month, side by side

Brockton climate table

1991–2020

Monthly climate averages for Brockton, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	2.2°C-5.4°C	-5.4°C	92	9.7	9.59 h
February	3.4°C-4.7°C	-4.7°C	81	9.1	10.511 h
March	6.9°C-1.2°C	-1.2°C	112	11.1	11.912 h
April	12.9°C4.2°C	4.2°C	95	11.2	13.313 h
May	18.4°C9.7°C	9.7°C	77	10.6	14.515 h
June	23.6°C15.1°C	15.1°C	86	9.7	15.215 h
July	27.1°C18.7°C	18.7°C	77	9.9	14.915 h
August	26.2°C18.2°C	18.2°C	89	9.6	13.914 h
September	22.1°C14.7°C	14.7°C	89	8.1	12.513 h
October	16.0°C8.9°C	8.9°C	104	9.4	11.111 h
November	10.2°C3.4°C	3.4°C	91	8.9	9.910 h
December	5.1°C-1.6°C	-1.6°C	110	10.6	9.29 h

Rainfall is the average of the 30 separate monthly totals. A rain 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

January in nearby cities

Distance from Brockton

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 Brockton) is explained once on the Brockton year overview and on the Sources, method and limits page.