Merrimac Weather Forecast 15 Days, Weather in Merrimac Today
Current weather conditions and 15 day weather forecast for Merrimac, 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 Merrimac
| 16 December 2025 Tuesday -1.7 ° C / 28.9°F  Clear |
Feels Like : -4 ° C / 24.7°F Humidity : % 51 Pressure : 1020 mb Wind Speed : 6.1 kmph / 3.8 miles from SSW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Merrimac, MA, USA
Weather Forecast for next 15 Days for Merrimac 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 Merrimac, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 16 December 2025 Tuesday | Sunny |
-8.7 ° C (16.3°F) |
4.1 ° C (39.4°F) |
-3.4 ° C (25.9°F) |
% 58 | 0% | 0.3 | Sunrise:07:09 AM Sunset: 04:11 PM |
Moonrise:04:07 AM Moonset: 01:35 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Partly Cloudy |
-3.2 ° C (26.2°F) |
3.2 ° C (37.8°F) |
-0.1 ° C (31.8°F) |
% 71 | 0% | 0.3 | Sunrise:07:10 AM Sunset: 04:12 PM |
Moonrise:05:11 AM Moonset: 02:05 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Partly Cloudy |
-2.3 ° C (27.9°F) |
3.2 ° C (37.8°F) |
1.2 ° C (34.1°F) |
% 86 | 0% | 0.2 | Sunrise:07:10 AM Sunset: 04:12 PM |
Moonrise:06:14 AM Moonset: 02:43 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Moderate rain |
-4 ° C (24.8°F) |
13.8 ° C (56.9°F) |
7.8 ° C (46.1°F) |
% 83 | 86% | 0 | Sunrise:07:11 AM Sunset: 04:12 PM |
Moonrise:07:13 AM Moonset: 03:31 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Sunny |
-5.4 ° C (22.2°F) |
-0.8 ° C (30.6°F) |
-4 ° C (24.9°F) |
% 43 | 0% | 0 | Sunrise:07:11 AM Sunset: 04:13 PM |
Moonrise:08:04 AM Moonset: 04:26 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Cloudy |
-0.8 ° C (30.6°F) |
5.7 ° C (42.2°F) |
2.3 ° C (36.2°F) |
% 74 | 0% | 1 | Sunrise:07:12 AM Sunset: 04:13 PM |
Moonrise:08:48 AM Moonset: 05:29 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Sunny |
-5.3 ° C (22.4°F) |
0.3 ° C (32.5°F) |
-1.9 ° C (28.6°F) |
% 59 | 0% | 2 | Sunrise:07:12 AM Sunset: 04:14 PM |
Moonrise:09:24 AM Moonset: 06:36 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Moderate or heavy snow showers |
-5.4 ° C (22.2°F) |
0.2 ° C (32.4°F) |
-1.8 ° C (28.8°F) |
% 70 | 78% | 1 | Sunrise:07:13 AM Sunset: 04:14 PM |
Moonrise:09:53 AM Moonset: 07:45 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Sunny |
-2.5 ° C (27.5°F) |
3.9 ° C (39.1°F) |
1.1 ° C (34°F) |
% 67 | 0% | 2 | Sunrise:07:13 AM Sunset: 04:15 PM |
Moonrise:10:17 AM Moonset: 08:53 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Partly Cloudy |
-5.5 ° C (22.1°F) |
-1.2 ° C (29.9°F) |
-3.5 ° C (25.8°F) |
% 52 | 0% | 2 | Sunrise:07:14 AM Sunset: 04:16 PM |
Moonrise:10:39 AM Moonset: 10:02 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Heavy snow |
-2.9 ° C (26.8°F) |
2.5 ° C (36.5°F) |
0.3 ° C (32.6°F) |
% 89 | 74% | 1 | Sunrise:07:14 AM Sunset: 04:16 PM |
Moonrise:10:59 AM Moonset: 11:11 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Light snow |
-6.7 ° C (20°F) |
-0.5 ° C (31.1°F) |
-2.6 ° C (27.3°F) |
% 88 | 85% | 1 | Sunrise:07:14 AM Sunset: 04:17 PM |
Moonrise:11:20 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Partly Cloudy |
-8.3 ° C (17°F) |
-3.2 ° C (26.2°F) |
-6.6 ° C (20.2°F) |
% 86 | 0% | 2 | Sunrise:07:15 AM Sunset: 04:18 PM |
Moonrise:11:42 AM Moonset: 12:23 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Sunny |
-10.9 ° C (12.5°F) |
-2.8 ° C (27°F) |
-7.7 ° C (18.2°F) |
% 84 | 0% | 2 | Sunrise:07:15 AM Sunset: 04:18 PM |
Moonrise:12:06 PM Moonset: 01:38 AM Moon Phase ( Waxing Gibbous ) |
|
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