Onset Weather Forecast 15 Days, Weather in Onset Today
Current weather conditions and 15 day weather forecast for Onset, 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 Onset
| 17 March 2026 Tuesday 14.4 ° C / 57.9°F  Light rain |
Feels Like : 11.9 ° C / 53.4°F Humidity : % 94 Pressure : 1006 mb Wind Speed : 38.9 kmph / 24.2 miles from S  Visibility : 4.8 km Precipitation (rainfall) : 0.33 mm Cloud (%) : 100 |
15 day weather forecast for Onset, MA, USA
Weather Forecast for next 15 Days for Onset 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 Onset, 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 March 2026 Monday |  Heavy rain |
2.1 ° C (35.8°F) |
15.1 ° C (59.2°F) |
11.5 ° C (52.6°F) |
% 93 | 89% | 0.2 | Sunrise:06:53 AM Sunset: 06:50 PM |
Moonrise:05:46 AM Moonset: 04:20 PM Moon Phase ( Waning Crescent ) |
|
| 17 March 2026 Tuesday |  Moderate rain |
-1.7 ° C (28.9°F) |
7.7 ° C (45.9°F) |
6.3 ° C (43.3°F) |
% 63 | 88% | 1 | Sunrise:06:51 AM Sunset: 06:51 PM |
Moonrise:06:09 AM Moonset: 05:31 PM Moon Phase ( Waning Crescent ) |
|
| 18 March 2026 Wednesday |  Overcast |
-2.8 ° C (27°F) |
1.2 ° C (34.2°F) |
-1.2 ° C (29.9°F) |
% 40 | 0% | 0.7 | Sunrise:06:49 AM Sunset: 06:53 PM |
Moonrise:06:31 AM Moonset: 06:43 PM Moon Phase ( Waning Crescent ) |
|
| 19 March 2026 Thursday |  Partly Cloudy |
-0.9 ° C (30.4°F) |
5.9 ° C (42.6°F) |
1.7 ° C (35.1°F) |
% 57 | 0% | 0.9 | Sunrise:06:47 AM Sunset: 06:54 PM |
Moonrise:06:53 AM Moonset: 07:56 PM Moon Phase ( New Moon ) |
|
| 20 March 2026 Friday | Partly Cloudy |
-0.6 ° C (30.9°F) |
7.3 ° C (45.1°F) |
3.4 ° C (38.1°F) |
% 72 | 0% | 0.9 | Sunrise:06:46 AM Sunset: 06:55 PM |
Moonrise:07:17 AM Moonset: 09:13 PM Moon Phase ( Waxing Crescent ) |
|
| 21 March 2026 Saturday | Moderate rain |
1.5 ° C (34.7°F) |
5.9 ° C (42.7°F) |
4.9 ° C (40.7°F) |
% 73 | 69% | 0 | Sunrise:06:44 AM Sunset: 06:56 PM |
Moonrise:07:43 AM Moonset: 10:31 PM Moon Phase ( Waxing Crescent ) |
|
| 22 March 2026 Sunday |  Patchy rain nearby |
1.2 ° C (34.1°F) |
8.7 ° C (47.6°F) |
5.7 ° C (42.3°F) |
% 72 | 81% | 2 | Sunrise:06:42 AM Sunset: 06:57 PM |
Moonrise:08:15 AM Moonset: 11:51 PM Moon Phase ( Waxing Crescent ) |
|
| 23 March 2026 Monday |  Sunny |
-5 ° C (22.9°F) |
1.2 ° C (34.2°F) |
-1.4 ° C (29.4°F) |
% 42 | 0% | 2 | Sunrise:06:40 AM Sunset: 06:58 PM |
Moonrise:08:55 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 24 March 2026 Tuesday | Sunny |
-5.4 ° C (22.3°F) |
5.1 ° C (41.1°F) |
-0.7 ° C (30.7°F) |
% 39 | 0% | 2 | Sunrise:06:39 AM Sunset: 06:59 PM |
Moonrise:09:46 AM Moonset: 01:07 AM Moon Phase ( Waxing Crescent ) |
|
| 25 March 2026 Wednesday | Patchy rain nearby |
-0.5 ° C (31.1°F) |
6.8 ° C (44.2°F) |
4.2 ° C (39.5°F) |
% 87 | 87% | 1 | Sunrise:06:37 AM Sunset: 07:00 PM |
Moonrise:10:48 AM Moonset: 02:14 AM Moon Phase ( First Quarter ) |
|
| 26 March 2026 Thursday | Patchy rain nearby |
6.7 ° C (44°F) |
11.3 ° C (52.4°F) |
8.8 ° C (47.8°F) |
% 96 | 82% | 2 | Sunrise:06:35 AM Sunset: 07:02 PM |
Moonrise:11:58 AM Moonset: 03:11 AM Moon Phase ( Waxing Gibbous ) |
|
| 27 March 2026 Friday |  Cloudy |
6.1 ° C (42.9°F) |
14.8 ° C (58.7°F) |
10.3 ° C (50.5°F) |
% 81 | 0% | 3 | Sunrise:06:34 AM Sunset: 07:03 PM |
Moonrise:01:13 PM Moonset: 03:55 AM Moon Phase ( Waxing Gibbous ) |
|
| 28 March 2026 Saturday | Partly Cloudy |
-1 ° C (30.2°F) |
6.2 ° C (43.2°F) |
3.6 ° C (38.5°F) |
% 52 | 0% | 2 | Sunrise:06:32 AM Sunset: 07:04 PM |
Moonrise:02:27 PM Moonset: 04:29 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 March 2026 Sunday | Sunny |
-2.5 ° C (27.4°F) |
7.9 ° C (46.3°F) |
2.2 ° C (35.9°F) |
% 38 | 0% | 2 | Sunrise:06:30 AM Sunset: 07:05 PM |
Moonrise:03:40 PM Moonset: 04:56 AM Moon Phase ( Waxing Gibbous ) |
|
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