New Jersey weather in August: Statewide normals and every place, NOAA 1991-2020
In August, New Jersey's statewide normal high is 84°F and normal low 63°F; normal highs run from 82°F in Andover to 87°F in Lambertville (NOAA 1991-2020 normals).
- Statewide normal high
- 84°FAugust, 1991-2020
- Statewide normal low
- 63°FAugust, 1991-2020
- Statewide normal precipitation
- 4.57 inAugust
- Warmest place
- 87°Fnormal high, Lambertville
- Coolest place
- 82°Fnormal high, Andover
Where is New Jersey warmest and wettest in August?
Lambertville has the warmest August afternoons (87°F) and Andover the coolest (82°F). Long Branch gets the most precipitation (6.27 in) and Boonton the least (3.67 in).
Statewide, August averaged 75.9°F in 2021, 77.2°F in 2022, 73.2°F in 2023, 73.8°F in 2024, 70.7°F in 2025, 74.9°F in 2026, against a 1991-2020 normal of 73.6°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Newark | 85°F | 68°F | 4.15 | 0.0 |
| Toms River | 84°F | 62°F | 5.02 | – |
| Trenton | 84°F | 65°F | 4.22 | 0.0 |
| New Brunswick | 85°F | 64°F | 4.66 | 0.0 |
| Plainfield | 86°F | 64°F | 3.99 | 0.0 |
| Atlantic City | 85°F | 65°F | 4.59 | 0.0 |
| Long Branch | 82°F | 65°F | 6.27 | – |
| Millville | 84°F | 64°F | 4.61 | – |
| Glassboro | 85°F | 66°F | – | – |
| Harrison | 85°F | 67°F | 4.38 | 0.0 |
| Phillipsburg | 83°F | 62°F | 5.18 | – |
| Hammonton | 85°F | 64°F | 4.69 | 0.0 |
| Moorestown-Lenola | 85°F | 64°F | 4.61 | – |
| Somerville | 84°F | 61°F | 5.18 | – |
| Freehold | 85°F | 63°F | 4.13 | – |
| Wanaque | 83°F | 63°F | 4.57 | – |
| Caldwell | 84°F | 64°F | 4.49 | – |
| Boonton | 84°F | 62°F | 3.67 | – |
| Newton | 83°F | 60°F | – | – |
| Hightstown | 85°F | 61°F | 4.29 | 0.0 |
| Flemington | 84°F | 61°F | 4.24 | 0.0 |
| Lambertville | 87°F | 61°F | 4.69 | 0.0 |
| Woodstown | 86°F | 64°F | 4.61 | 0.0 |
| Cape May | 84°F | 67°F | 4.01 | 0.0 |
| Belvidere | 83°F | 59°F | 4.55 | 0.0 |
| Essex Fells | 84°F | 63°F | 4.47 | – |
| Sussex | 82°F | 60°F | 3.93 | – |
| Cranford | 84°F | 66°F | 4.14 | 0.0 |
| Estell Manor | 85°F | 64°F | 5.52 | 0.0 |
| Seabrook Farms | 84°F | 65°F | 4.93 | 0.0 |
| Belleplain | 86°F | 64°F | – | – |
| Andover | 82°F | 60°F | 4.85 | – |
| Teterboro | 85°F | 67°F | 4.25 | – |
| Brant Beach-Beach Haven | 83°F | 69°F | 4.90 | 0.0 |
| Canoe Brook | 85°F | 64°F | 4.94 | 0.0 |
| Charlotteburg Reservoir | 81°F | 60°F | 4.33 | – |
| Indian Mills (2 mi W) | 85°F | 62°F | 5.34 | 0.0 |
| Little Falls | 84°F | 64°F | – | – |
| Margate | 84°F | 70°F | – | – |
| Mount Holly S Jersey Airport | 85°F | 64°F | 4.40 | – |
| Pennsauken (1 mi N) | 85°F | 66°F | 4.07 | – |
| Philadelphia/Mount Holly Weather Office | 83°F | 64°F | 4.49 | 0.0 |
| Wertsville (4 mi NE) | 83°F | 62°F | 4.27 | 0.0 |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.