Climate averages 1991–2020
Brockton weather
in August.
A warm, moderately wet month: the 2nd warmest and the joint 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Brockton: daytime highs average 26.2°C and nights cool to about 18.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 89 mm of rain on roughly 10 days, which makes August a moderately wet month (the joint 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 53 min on an average August day.
The nearest other city in this atlas is Quincy (19 km away). In August its highs average 25.8°C, about as warm as Brockton, with 85 mm of rain.
Among the 498 cities listed in the United States, Brockton ranks joint 430th of 498 for the warmest August highs and joint 317th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Brockton is 3.7°C cooler than that mean.
From August to September, average highs fall by 4.1°C to 22.1°C, and monthly rainfall stays at 89 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages 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
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 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, selected | 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
August in nearby cities
- Quincy in AugustUnited States · 19 kmHigh 25.8°C · Low 18.3°C · 85 mm rain
- Dorchester in AugustUnited States · 24 kmHigh 26.3°C · Low 18.1°C · 85 mm rain
- Boston in AugustUnited States · 31 kmHigh 26.6°C · Low 17.9°C · 85 mm rain
- Newton in AugustUnited States · 32 kmHigh 26.8°C · Low 18.1°C · 88 mm rain
- Pawtucket in AugustUnited States · 38 kmHigh 27.2°C · Low 18.4°C · 96 mm rain
- Lynn in AugustUnited States · 43 kmHigh 24.6°C · Low 18.3°C · 85 mm rain
- Providence in AugustUnited States · 44 kmHigh 27.0°C · Low 18.6°C · 98 mm rain
- Fall River in AugustUnited States · 44 kmHigh 25.8°C · Low 18.8°C · 92 mm rain
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 limitsHow 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.