Current weather conditions and 15 day weather forecast for Merrimack Valley Seaplane Base, 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.
| 18 December 2025 Thursday 1.7 ° C / 35.1°F ![]() Clear |
Feels Like : -2.2 ° C / 28.1°F Humidity : % 75 Pressure : 1021 mb Wind Speed : 14 kmph / 8.7 miles from WNW ![]() Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 18 December 2025 Thursday | Sunny |
-2.7 ° C (27.1°F) |
6.4 ° C (43.5°F) |
1.6 ° C (34.9°F) |
% 85 | 0% | 0.3 | Sunrise:07:11 AM Sunset: 04:13 PM |
Moonrise:06:14 AM Moonset: 02:44 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday | Heavy rain |
0.5 ° C (32.8°F) |
12.5 ° C (54.5°F) |
7.7 ° C (45.8°F) |
% 90 | 87% | 0 | Sunrise:07:11 AM Sunset: 04:13 PM |
Moonrise:07:13 AM Moonset: 03:31 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Sunny |
-6 ° C (21.2°F) |
-1.3 ° C (29.7°F) |
-2.3 ° C (27.8°F) |
% 60 | 0% | 0.2 | Sunrise:07:12 AM Sunset: 04:13 PM |
Moonrise:08:05 AM Moonset: 04:27 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Patchy rain nearby |
-2.6 ° C (27.3°F) |
5.9 ° C (42.6°F) |
1.4 ° C (34.6°F) |
% 64 | 82% | 0.2 | Sunrise:07:12 AM Sunset: 04:14 PM |
Moonrise:08:48 AM Moonset: 05:30 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Sunny |
-6.6 ° C (20.2°F) |
-2.1 ° C (28.3°F) |
-3.9 ° C (25°F) |
% 52 | 0% | 0 | Sunrise:07:13 AM Sunset: 04:14 PM |
Moonrise:09:24 AM Moonset: 06:36 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Partly Cloudy |
-7.8 ° C (17.9°F) |
-1.5 ° C (29.2°F) |
-4.7 ° C (23.5°F) |
% 38 | 0% | 2 | Sunrise:07:13 AM Sunset: 04:15 PM |
Moonrise:09:53 AM Moonset: 07:45 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Light freezing rain |
-3.5 ° C (25.6°F) |
2.7 ° C (36.8°F) |
-1.5 ° C (29.3°F) |
% 71 | 76% | 1 | Sunrise:07:14 AM Sunset: 04:16 PM |
Moonrise:10:18 AM Moonset: 08:54 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Sunny |
-4.3 ° C (24.2°F) |
1.1 ° C (34°F) |
-2.2 ° C (28°F) |
% 62 | 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 | Light freezing rain |
-6.9 ° C (19.6°F) |
-2.1 ° C (28.2°F) |
-4.2 ° C (24.5°F) |
% 49 | 73% | 1 | Sunrise:07:14 AM Sunset: 04:17 PM |
Moonrise:11:00 AM Moonset: 11:12 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Patchy rain nearby |
-2.7 ° C (27.1°F) |
6.8 ° C (44.2°F) |
3.1 ° C (37.7°F) |
% 83 | 76% | 1 | Sunrise:07:15 AM Sunset: 04:18 PM |
Moonrise:11:20 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Light freezing rain |
-7.8 ° C (18°F) |
-0.7 ° C (30.8°F) |
-2.7 ° C (27.1°F) |
% 60 | 70% | 1 | 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 |
-9.5 ° C (15°F) |
-3.7 ° C (25.4°F) |
-6.8 ° C (19.8°F) |
% 48 | 0% | 2 | Sunrise:07:15 AM Sunset: 04:19 PM |
Moonrise:12:07 PM Moonset: 01:39 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Moderate snow |
-6.9 ° C (19.7°F) |
-1.8 ° C (28.8°F) |
-4.1 ° C (24.7°F) |
% 50 | 76% | 1 | Sunrise:07:15 AM Sunset: 04:20 PM |
Moonrise:12:38 PM Moonset: 02:58 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Fog |
-1.2 ° C (29.8°F) |
1.2 ° C (34.2°F) |
0.4 ° C (32.7°F) |
% 99 | 88% | 1 | Sunrise:07:15 AM Sunset: 04:21 PM |
Moonrise:01:19 PM Moonset: 04:19 AM Moon Phase ( Waxing Gibbous ) |
|