Climate averages 1991–2020
Passaic weather
in August.
A warm, wet month: the 2nd warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Passaic: daytime highs average 27.8°C and nights cool to about 19.1°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 102 mm of rain on roughly 11 days, which makes August a wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 48 min on an average August day.
The nearest other city in this atlas is Paterson (8 km away). In August its highs average 27.9°C, about as warm as Passaic, with 103 mm of rain.
Among the 498 cities listed in the United States, Passaic ranks joint 337th of 498 for the warmest August highs and joint 411th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Passaic is 2.1°C cooler than that mean.
From August to September, average highs fall by 4.0°C to 23.9°C, and monthly rainfall stays at 102 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
Passaic climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.9°C-4.9°C | -4.9°C | 85 | 9.2 | 9.610 h |
| February | 4.4°C-4.5°C | -4.5°C | 78 | 8.5 | 10.611 h |
| March | 8.8°C-0.6°C | -0.6°C | 107 | 10.2 | 11.912 h |
| April | 15.4°C5.2°C | 5.2°C | 94 | 10.8 | 13.313 h |
| May | 20.8°C11.1°C | 11.1°C | 90 | 11.7 | 14.414 h |
| June | 25.9°C16.5°C | 16.5°C | 104 | 11.2 | 15.115 h |
| July | 28.9°C19.8°C | 19.8°C | 106 | 11.0 | 14.815 h |
| August, selected | 27.8°C19.1°C | 19.1°C | 102 | 10.7 | 13.814 h |
| September | 23.9°C15.5°C | 15.5°C | 102 | 9.4 | 12.513 h |
| October | 17.3°C9.2°C | 9.2°C | 99 | 8.7 | 11.211 h |
| November | 11.1°C3.4°C | 3.4°C | 80 | 8.2 | 9.910 h |
| December | 5.6°C-1.4°C | -1.4°C | 103 | 9.7 | 9.39 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
- Paterson in AugustUnited States · 8 kmHigh 27.9°C · Low 19.1°C · 103 mm rain
- Newark in AugustUnited States · 14 kmHigh 28.1°C · Low 19.3°C · 102 mm rain
- Manhattan in AugustUnited States · 16 kmHigh 27.6°C · Low 19.2°C · 101 mm rain
- New York City in AugustUnited States · 19 kmHigh 27.4°C · Low 19.2°C · 101 mm rain
- Yonkers in AugustUnited States · 21 kmHigh 27.6°C · Low 19.5°C · 102 mm rain
- The Bronx in AugustUnited States · 22 kmHigh 27.6°C · Low 19.3°C · 98 mm rain
- Brooklyn in AugustUnited States · 27 kmHigh 27.5°C · Low 19.7°C · 101 mm rain
- Greenburgh in AugustUnited States · 31 kmHigh 27.3°C · Low 19.5°C · 100 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 Passaic) is explained once on the Passaic year overview and on the Sources, method and limits page.
Newark lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.