Iselin, New Jersey Climate
United States
Pop. 18,695 Elev. 22 m / 72 ft
TZ: America/New_York (UTC-4) ·
Iselin has warm summers with average highs of 88°F (31°C) in July, and cold winters averaging 26°F (-3°C) in January. Humidity pushes the summer feels-like temperature to 100°F (38°C), while wind chill can drive winter lows to 17°F (-8°C). Rain falls on about 61 days per year (36.0 in / 916 mm total), with snow on 4 days and 25 in (634 mm) of annual accumulation. The city averages 125 sunny days per year and around 25 thunderstorm days. Ocean water temperatures reach 78°F (25°C) in summer.
| Temperature | 88°F (31°C) high | 26°F (-4°C) low |
| Feels like | 100°F (38°C) high | 17°F (-8°C) low |
| Rain | 61 days | 36.0 in (916 mm) /yr |
| Snow | 4 days | 25.0 in (634 mm) /yr |
| Sky | 125 sunny | 25 stormy |
| Wind | 3.2 mph (1.4 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jun, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
39
Jan 62
Feb 51
Mar 68
Apr 73
May 67
Jun 58
Jul 44
Aug 55
Sep 42
Oct 51
Nov 57
Dec Humidity (%)
57
Jan 59
Feb 54
Mar 56
Apr 68
May 67
Jun 70
Jul 67
Aug 72
Sep 65
Oct 60
Nov 63
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 11 mi Newark Liberty International Airport (EWR)
Ski resort 21 mi Big Snow American Dream
National park 155 mi Connecticut River Greenway State Park
Mountain peak
(4,971 ft) 245 mi Schofield Cobble
Hospital 2 mi JFK Medical Center
Hiking trail 5 mi Ellis Swamp Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 37°F 3°C | 26°F -4°C | 0.9 in 22 mm | 4.9 in125 mm | 16 |
| February | 42°F 5°C | 30°F -1°C | 2.3 in 58 mm | 8.9 in227 mm | 6 |
| March | 57°F 14°C | 39°F 4°C | 3.6 in 91 mm | — | 12 |
| April | 64°F 18°C | 48°F 9°C | 3.9 in 100 mm | 0.2 in5 mm | 5 |
| May | 71°F 22°C | 57°F 14°C | 5.7 in 145 mm | — | 4 |
| June | 82°F 28°C | 67°F 19°C | 2.5 in 63 mm | — | 8 |
| July | 88°F 31°C | 74°F 23°C | 5.9 in 149 mm | — | 7 |
| August | 80°F 27°C | 65°F 18°C | 1.8 in 44 mm | — | 16 |
| September | 77°F 25°C | 63°F 17°C | 3.0 in 75 mm | — | 10 |
| October | 66°F 19°C | 51°F 11°C | 2.8 in 72 mm | — | 18 |
| November | 53°F 12°C | 41°F 5°C | 2.0 in 52 mm | 0.0 in1 mm | 14 |
| December | 40°F 4°C | 27°F -3°C | 1.7 in 43 mm | 10.9 in278 mm | 9 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 16 | 1 |
| February | 6 | 1 |
| March | 12 | 1 |
| April | 5 | 2 |
| May | 4 | 4 |
| June | 8 | 2 |
| July | 7 | 7 |
| August | 16 | 1 |
| September | 10 | 3 |
| October | 18 | 3 |
| November | 14 | 0 |
| December | 9 | 0 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 49°F 9°C | 33°F 0°C |
| February | 42°F 6°C | 32°F 0°C |
| March | 44°F 7°C | 43°F 6°C |
| April | 51°F 11°C | 52°F 11°C |
| May | 59°F 15°C | 63°F 17°C |
| June | 73°F 23°C | 72°F 22°C |
| July | 78°F 25°C | 81°F 27°C |
| August | 76°F 25°C | 74°F 23°C |
| September | 71°F 22°C | 69°F 20°C |
| October | 70°F 21°C | 58°F 15°C |
| November | 61°F 16°C | 45°F 7°C |
| December | 52°F 11°C | 33°F 1°C |