Williamstown Weather Forecast 15 Days, Weather in Williamstown Today
Current weather conditions and 15 day weather forecast for Williamstown, 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 Williamstown
| 19 December 2025 Friday 8.9 ° C / 48°F  Partly cloudy |
Feels Like : 6.3 ° C / 43.4°F Humidity : % 89 Pressure : 1016 mb Wind Speed : 16.9 kmph / 10.5 miles from SSE  Visibility : 13 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15 day weather forecast for Williamstown, NJ, USA
Weather Forecast for next 15 Days for Williamstown 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 Williamstown, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 18 December 2025 Thursday |  Sunny |
0.3 ° C (32.5°F) |
15.6 ° C (60.1°F) |
6.2 ° C (43.2°F) |
% 76 | 0% | 0.4 | Sunrise:07:17 AM Sunset: 04:38 PM |
Moonrise:06:18 AM Moonset: 03:13 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Heavy rain |
-1.1 ° C (30°F) |
14.3 ° C (57.7°F) |
9.1 ° C (48.4°F) |
% 80 | 89% | 0.1 | Sunrise:07:17 AM Sunset: 04:38 PM |
Moonrise:07:16 AM Moonset: 04:01 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Sunny |
-4.5 ° C (23.9°F) |
0.6 ° C (33.1°F) |
-1.7 ° C (29°F) |
% 66 | 0% | 0.3 | Sunrise:07:18 AM Sunset: 04:39 PM |
Moonrise:08:07 AM Moonset: 04:56 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Sunny |
-1.8 ° C (28.8°F) |
9.2 ° C (48.6°F) |
2.8 ° C (37.1°F) |
% 70 | 0% | 0.3 | Sunrise:07:18 AM Sunset: 04:39 PM |
Moonrise:08:52 AM Moonset: 05:58 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Sunny |
-2.5 ° C (27.5°F) |
1.3 ° C (34.4°F) |
-1.1 ° C (29.9°F) |
% 42 | 0% | 0.3 | Sunrise:07:19 AM Sunset: 04:40 PM |
Moonrise:09:30 AM Moonset: 07:03 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Light freezing rain |
-1.6 ° C (29.1°F) |
2.1 ° C (35.8°F) |
0.2 ° C (32.4°F) |
% 54 | 79% | 0 | Sunrise:07:19 AM Sunset: 04:40 PM |
Moonrise:10:01 AM Moonset: 08:09 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Partly Cloudy |
-1.1 ° C (30°F) |
3.4 ° C (38.1°F) |
2.1 ° C (35.8°F) |
% 51 | 0% | 2 | Sunrise:07:20 AM Sunset: 04:41 PM |
Moonrise:10:28 AM Moonset: 09:15 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Partly Cloudy |
-1.9 ° C (28.5°F) |
4.1 ° C (39.4°F) |
1.9 ° C (35.5°F) |
% 55 | 0% | 2 | Sunrise:07:20 AM Sunset: 04:42 PM |
Moonrise:10:52 AM Moonset: 10:21 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Patchy rain nearby |
6.7 ° C (44.1°F) |
16.8 ° C (62.3°F) |
12 ° C (53.6°F) |
% 80 | 0% | 3 | Sunrise:07:20 AM Sunset: 04:42 PM |
Moonrise:11:15 AM Moonset: 11:28 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Sunny |
5.1 ° C (41.1°F) |
9.6 ° C (49.2°F) |
7.1 ° C (44.8°F) |
% 71 | 0% | 3 | Sunrise:07:21 AM Sunset: 04:43 PM |
Moonrise:11:38 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Patchy rain nearby |
5.9 ° C (42.7°F) |
8.2 ° C (46.8°F) |
7.7 ° C (45.8°F) |
% 90 | 87% | 2 | Sunrise:07:21 AM Sunset: 04:44 PM |
Moonrise:12:02 PM Moonset: 12:37 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Patchy rain nearby |
1.9 ° C (35.4°F) |
10.4 ° C (50.7°F) |
7.2 ° C (45°F) |
% 77 | 89% | 2 | Sunrise:07:21 AM Sunset: 04:44 PM |
Moonrise:12:29 PM Moonset: 01:50 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Sunny |
-0.7 ° C (30.7°F) |
3.8 ° C (38.8°F) |
1.3 ° C (34.4°F) |
% 48 | 0% | 2 | Sunrise:07:21 AM Sunset: 04:45 PM |
Moonrise:01:04 PM Moonset: 03:06 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Sunny |
-0.5 ° C (31.1°F) |
6.5 ° C (43.6°F) |
2.1 ° C (35.7°F) |
% 60 | 0% | 2 | Sunrise:07:22 AM Sunset: 04:46 PM |
Moonrise:01:47 PM Moonset: 04:24 AM Moon Phase ( Waxing Gibbous ) |
|
Add a link to your web page; copy and paste this html to your web page