Climate averages 1991–2020
Quincy weather
in August.
A warm, moderately wet month: the 2nd warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Quincy: daytime highs average 25.8°C and nights cool to about 18.3°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 85 mm of rain on roughly 9 days, which makes August a moderately wet month (the 4th 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 Dorchester (8 km away). In August its highs average 26.3°C, 0.5°C warmer than Quincy, with 85 mm of rain.
Among the 498 cities listed in the United States, Quincy ranks joint 456th of 498 for the warmest August highs and joint 291st of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Quincy is 4.1°C cooler than that mean.
From August to September, average highs fall by 3.9°C to 21.9°C, and monthly rainfall rises from 85 mm to 88 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
Quincy climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.0°C-5.4°C | -5.4°C | 94 | 10.0 | 9.59 h |
| February | 3.2°C-4.6°C | -4.6°C | 84 | 8.9 | 10.511 h |
| March | 6.6°C-1.2°C | -1.2°C | 116 | 11.1 | 11.912 h |
| April | 12.5°C4.2°C | 4.2°C | 100 | 11.0 | 13.313 h |
| May | 18.0°C9.7°C | 9.7°C | 81 | 10.6 | 14.615 h |
| June | 23.2°C15.2°C | 15.2°C | 87 | 10.1 | 15.215 h |
| July | 26.6°C18.8°C | 18.8°C | 73 | 9.6 | 14.915 h |
| August, selected | 25.8°C18.3°C | 18.3°C | 85 | 9.1 | 13.914 h |
| September | 21.9°C14.8°C | 14.8°C | 88 | 8.1 | 12.513 h |
| October | 15.9°C9.0°C | 9.0°C | 108 | 9.8 | 11.111 h |
| November | 10.0°C3.4°C | 3.4°C | 95 | 9.6 | 9.810 h |
| December | 4.9°C-1.6°C | -1.6°C | 115 | 10.8 | 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
- Dorchester in AugustUnited States · 8 kmHigh 26.3°C · Low 18.1°C · 85 mm rain
- Boston in AugustUnited States · 13 kmHigh 26.6°C · Low 17.9°C · 85 mm rain
- Brockton in AugustUnited States · 19 kmHigh 26.2°C · Low 18.2°C · 89 mm rain
- Newton in AugustUnited States · 19 kmHigh 26.8°C · Low 18.1°C · 88 mm rain
- Lynn in AugustUnited States · 24 kmHigh 24.6°C · Low 18.3°C · 85 mm rain
- Lowell in AugustUnited States · 50 kmHigh 26.9°C · Low 17.6°C · 84 mm rain
- Pawtucket in AugustUnited States · 52 kmHigh 27.2°C · Low 18.4°C · 96 mm rain
- Lawrence (Massachusetts), United States in AugustUnited States · 52 kmHigh 26.9°C · Low 17.8°C · 84 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 Quincy) is explained once on the Quincy year overview and on the Sources, method and limits page.
Boston and Dorchester lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.