Weather in Passaic County, New Jersey for August 2025
Coastal Flood Advisory - See hour by hour.
Until now, August 2025 in Passaic County has been nearly identical to the historical average, with a temperature of 28.9 °F (showing only a slight deviation of 0.3 °F).
The forecast for the upcoming days in Passaic County predicts a temperature of 29.1 °F, which is slightly above the historical average.
In general, the average temperature in Passaic County at the beginning of August is 28.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.4 °F by the end of August.
Passaic County in August brings notable rainfall, with an average of 19 rainy days and a total precipitation of 157.5 mm.
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Passaic County Weather August
Temperatures trend during August in Passaic County
August weather in Passaic County day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Partly cloudy | 27° /17° | 32.8 mm | 6 | |
| Aug. 2 | Partly cloudy | 29° /18° | 2.9 mm | 7 | |
| Aug. 3 |  Patchy rain possible | 30° /18° | 7 mm | 7 | |
| Aug. 4 | Patchy rain possible | 30° /19° | 4.8 mm | 7 | |
| Aug. 5 | Partly cloudy | 32° /20° | 0.4 mm | 8 | |
| Aug. 6 |  Overcast | 28° /19° | 3.3 mm | 6 | |
| Aug. 7 |  Moderate or heavy rain shower | 24° /18° | 13 mm | 5 | |
| Aug. 8 |  Heavy rain at times | 26° /18° | 4.7 mm | 6 | |
| Aug. 9 | Overcast | 29° /19° | 4.6 mm | 7 | |
| Aug. 10 | Moderate or heavy rain shower | 31° /19° | 8 mm | 7 | |
| Aug. 11 |  Sunny | 31° /18° | 0 mm | 7 | |
| Aug. 12 | Moderate rain at times | 30° /19° | 0.4 mm | 7 | |
| Aug. 13 | Patchy rain possible | 29° /20° | 6.6 mm | 7 | |
| Aug. 14 |  Cloudy | 29° /20° | 0.6 mm | 6 | |
| Aug. 15 | Moderate rain at times | 29° /20° | 8.2 mm | 7 | |
| Aug. 16 | Patchy rain possible | 29° /20° | 1.2 mm | 7 | |
| Aug. 17 | Patchy rain possible | 30° /21° | 1.1 mm | 6 | |
| Aug. 18 | Moderate or heavy rain shower | 26° /18° | 21.5 mm | 6 | |
| Aug. 19 | Overcast | 26° /16° | 0.5 mm | 6 | |
| Aug. 20 | Sunny | 27° /14° | 0.3 mm | 7 | |
| Aug. 21 | Overcast | 24° /15° | 0 mm | 6 | |
| Aug. 22 | Sunny | 31° /15° | 0 mm | 2.1 | |
| Aug. 23 | Sunny | 31° /19° | 0 mm | 2 | |
| Aug. 24 | Partly cloudy | 28° /20° | 0 mm | 1.3 | |
| Aug. 25 |  Moderate rain | 29° /21° | 6.8 mm | 1.9 | |
| Aug. 26 | Sunny | 26° /17° | 0 mm | 0.1 | |
| Aug. 27 | Partly cloudy | 24° /15° | 0 mm | 5 | |
| Aug. 28 | Sunny | 27° /14° | 0 mm | 6 | |
| Aug. 29 | Sunny | 28° /17° | 0 mm | 6 | |
| Aug. 30 | Sunny | 28° /17° | 0 mm | 6 | |
| Aug. 31 | Sunny | 30° /17° | 0 mm | 6 | |
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Passaic County in August - FAQ
August rainfall patterns in Passaic County
UV exposure in Passaic County during August
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Where is Passaic County?Get accurate weather forecasts for Passaic County, located at latitude 40.917 and longitude -74.172. Stay updated with localized weather information tailored for Passaic County.