Iselin Weather Forecast 15 Days, Weather in Iselin Today
Current weather conditions and 15 day weather forecast for Iselin, New Jersey, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Iselin
| 15 December 2025 Monday -6.7 ° C / 19.9°F  Clear |
Feels Like : -14 ° C / 6.7°F Humidity : % 54 Pressure : 1025 mb Wind Speed : 22 kmph / 13.6 miles from NW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 25 |
15 day weather forecast for Iselin, NJ, USA
Weather Forecast for next 15 Days for Iselin including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Iselin, New Jersey state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 December 2025 Monday |  Partly Cloudy |
-10.4 ° C (13.3°F) |
-2.4 ° C (27.7°F) |
-5.9 ° C (21.4°F) |
% 71 | 0% | 0.3 | Sunrise:07:14 AM Sunset: 04:31 PM |
Moonrise:03:11 AM Moonset: 01:28 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Partly Cloudy |
-5.1 ° C (22.8°F) |
0.4 ° C (32.7°F) |
-2.1 ° C (28.2°F) |
% 70 | 0% | 0.4 | Sunrise:07:15 AM Sunset: 04:31 PM |
Moonrise:04:13 AM Moonset: 01:54 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Partly Cloudy |
-2.5 ° C (27.5°F) |
4.9 ° C (40.8°F) |
1.1 ° C (33.9°F) |
% 74 | 0% | 0.3 | Sunrise:07:15 AM Sunset: 04:31 PM |
Moonrise:05:16 AM Moonset: 02:26 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Patchy rain nearby |
-1.3 ° C (29.7°F) |
4 ° C (39.3°F) |
2.2 ° C (36°F) |
% 72 | 65% | 0.2 | Sunrise:07:16 AM Sunset: 04:32 PM |
Moonrise:06:18 AM Moonset: 03:06 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Moderate rain |
-0.6 ° C (30.8°F) |
12.8 ° C (55°F) |
7.9 ° C (46.2°F) |
% 79 | 64% | 0 | Sunrise:07:17 AM Sunset: 04:32 PM |
Moonrise:07:16 AM Moonset: 03:54 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Partly Cloudy |
-1.6 ° C (29.1°F) |
1.6 ° C (34.9°F) |
0.1 ° C (32.2°F) |
% 49 | 0% | 2 | Sunrise:07:17 AM Sunset: 04:32 PM |
Moonrise:08:08 AM Moonset: 04:49 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Patchy rain nearby |
2.7 ° C (36.9°F) |
6.6 ° C (43.9°F) |
4.5 ° C (40.2°F) |
% 81 | 86% | 1 | Sunrise:07:18 AM Sunset: 04:33 PM |
Moonrise:08:52 AM Moonset: 05:51 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Sunny |
-1.2 ° C (29.8°F) |
0.3 ° C (32.6°F) |
-0.4 ° C (31.3°F) |
% 47 | 0% | 2 | Sunrise:07:18 AM Sunset: 04:34 PM |
Moonrise:09:29 AM Moonset: 06:56 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Cloudy |
-0.8 ° C (30.5°F) |
3.3 ° C (38°F) |
1.5 ° C (34.6°F) |
% 49 | 0% | 1 | Sunrise:07:19 AM Sunset: 04:34 PM |
Moonrise:10:00 AM Moonset: 08:03 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Overcast |
3.9 ° C (39°F) |
7.9 ° C (46.2°F) |
5.6 ° C (42.2°F) |
% 69 | 0% | 2 | Sunrise:07:19 AM Sunset: 04:35 PM |
Moonrise:10:26 AM Moonset: 09:10 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Sunny |
-3.7 ° C (25.3°F) |
-2.1 ° C (28.3°F) |
-2 ° C (28.4°F) |
% 39 | 0% | 2 | Sunrise:07:19 AM Sunset: 04:35 PM |
Moonrise:10:49 AM Moonset: 10:17 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Heavy snow |
-3.5 ° C (25.7°F) |
-0.2 ° C (31.7°F) |
-1.7 ° C (28.9°F) |
% 67 | 66% | 1 | Sunrise:07:20 AM Sunset: 04:36 PM |
Moonrise:11:12 AM Moonset: 11:25 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Sunny |
-8.1 ° C (17.4°F) |
-5.5 ° C (22.1°F) |
-5.7 ° C (21.8°F) |
% 72 | 0% | 2 | Sunrise:07:20 AM Sunset: 04:37 PM |
Moonrise:11:34 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Partly Cloudy |
-8.2 ° C (17.3°F) |
-3.3 ° C (26.1°F) |
-5.9 ° C (21.3°F) |
% 77 | 0% | 2 | Sunrise:07:20 AM Sunset: 04:37 PM |
Moonrise:11:57 AM Moonset: 12:34 AM Moon Phase ( Waxing Gibbous ) |
|
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