Williamstown Weather Forecast 15 Days, Weather in Williamstown Today
Current weather conditions and 15 day weather forecast for Williamstown, Massachusetts, 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
| 06 December 2025 Saturday -3.9 ° C / 25°F  Overcast |
Feels Like : -5.4 ° C / 22.3°F Humidity : % 62 Pressure : 1015 mb Wind Speed : 4 kmph / 2.5 miles from SE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Williamstown, MA, 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, Massachusetts 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 06 December 2025 Saturday | Overcast |
-6 ° C (21.2°F) |
2.3 ° C (36.1°F) |
-2 ° C (28.3°F) |
% 79 | 0% | 0.2 | Sunrise:07:09 AM Sunset: 04:19 PM |
Moonrise:05:55 PM Moonset: 09:21 AM Moon Phase ( Waning Gibbous ) |
|
| 07 December 2025 Sunday | Overcast |
-1.7 ° C (28.9°F) |
0.6 ° C (33.1°F) |
-0.7 ° C (30.7°F) |
% 89 | 0% | 0.2 | Sunrise:07:10 AM Sunset: 04:19 PM |
Moonrise:07:14 PM Moonset: 10:10 AM Moon Phase ( Waning Gibbous ) |
|
| 08 December 2025 Monday |  Moderate or heavy snow showers |
-15.5 ° C (4.2°F) |
-3.4 ° C (26°F) |
-6.2 ° C (20.8°F) |
% 74 | 62% | 0.3 | Sunrise:07:11 AM Sunset: 04:19 PM |
Moonrise:08:32 PM Moonset: 10:48 AM Moon Phase ( Waning Gibbous ) |
|
| 09 December 2025 Tuesday |  Moderate snow |
-15.5 ° C (4°F) |
-4.8 ° C (23.3°F) |
-9.9 ° C (14.2°F) |
% 78 | 78% | 0.2 | Sunrise:07:12 AM Sunset: 04:19 PM |
Moonrise:09:46 PM Moonset: 11:18 AM Moon Phase ( Waning Gibbous ) |
|
| 10 December 2025 Wednesday |  Light freezing rain |
-6.4 ° C (20.4°F) |
4.9 ° C (40.8°F) |
-2.1 ° C (28.3°F) |
% 89 | 73% | 0 | Sunrise:07:12 AM Sunset: 04:19 PM |
Moonrise:10:56 PM Moonset: 11:41 AM Moon Phase ( Waning Gibbous ) |
|
| 11 December 2025 Thursday |  Light snow showers |
-12.3 ° C (9.8°F) |
-3 ° C (26.7°F) |
-5 ° C (23.1°F) |
% 86 | 52% | 1 | Sunrise:07:13 AM Sunset: 04:19 PM |
Moonrise:No moonrise Moonset: 12:01 PM Moon Phase ( Last Quarter ) |
|
| 12 December 2025 Friday |  Heavy snow |
-10.1 ° C (13.9°F) |
1.4 ° C (34.6°F) |
-4.7 ° C (23.5°F) |
% 91 | 83% | 1 | Sunrise:07:14 AM Sunset: 04:19 PM |
Moonrise:12:01 AM Moonset: 12:19 PM Moon Phase ( Waning Crescent ) |
|
| 13 December 2025 Saturday |  Partly Cloudy |
-15.7 ° C (3.7°F) |
-4.4 ° C (24°F) |
-10.8 ° C (12.5°F) |
% 90 | 0% | 2 | Sunrise:07:15 AM Sunset: 04:19 PM |
Moonrise:01:05 AM Moonset: 12:37 PM Moon Phase ( Waning Crescent ) |
|
| 14 December 2025 Sunday | Heavy snow |
-9.4 ° C (15.1°F) |
-6.2 ° C (20.8°F) |
-7.4 ° C (18.7°F) |
% 91 | 84% | 1 | Sunrise:07:16 AM Sunset: 04:19 PM |
Moonrise:02:08 AM Moonset: 12:57 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Freezing fog |
-15.3 ° C (4.4°F) |
-7.3 ° C (18.8°F) |
-12 ° C (10.4°F) |
% 94 | 0% | 1 | Sunrise:07:16 AM Sunset: 04:20 PM |
Moonrise:03:11 AM Moonset: 01:18 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Freezing fog |
-15.8 ° C (3.6°F) |
-6.8 ° C (19.7°F) |
-11.8 ° C (10.8°F) |
% 94 | 66% | 1 | Sunrise:07:17 AM Sunset: 04:20 PM |
Moonrise:04:15 AM Moonset: 01:44 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Light snow |
-18 ° C (-0.5°F) |
-12 ° C (10.5°F) |
-14.3 ° C (6.3°F) |
% 93 | 74% | 1 | Sunrise:07:18 AM Sunset: 04:20 PM |
Moonrise:05:20 AM Moonset: 02:14 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Freezing fog |
-18.4 ° C (-1.2°F) |
-5.5 ° C (22.1°F) |
-12.7 ° C (9.2°F) |
% 94 | 0% | 1 | Sunrise:07:18 AM Sunset: 04:21 PM |
Moonrise:06:22 AM Moonset: 02:52 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Mist |
-14.3 ° C (6.3°F) |
-1.5 ° C (29.3°F) |
-7 ° C (19.5°F) |
% 91 | 63% | 1 | Sunrise:07:19 AM Sunset: 04:21 PM |
Moonrise:07:21 AM Moonset: 03:40 PM Moon Phase ( New Moon ) |
|
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