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Onset MA Weather - Clear - 56°F
Clear
56°F
Updated 1:36 am
Feels Like 52°F
Humidity 86%
Wind N 0 mph
Barometer  30.13 in
Dew Point 52°F
Onset MA Weather - Clear - 13°C
Clear
13°C
Updated 1:36 am
Feels Like 11°C
Humidity 86%
Wind N 0 km/h
Barometer  102 kPa
Dew Point 11°C
Onset, MA Weather and Current Conditionsonset ma weather forecast

Onset, MA Weather Forecast

Onset Massachusetts WeatherOnset, Massachusetts Weather Weather Forecast
14 day API weather forecast for Onset, Massachusetts. Note: The 7-day weather forecast for Onset, MA is the most reliable and accurate weather forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days ahead.
Onset, MA Weather Forecast Dated: 136 AM Tue Sep 08 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Tuesday, September 8, 2026

Mid-Morning
Onset Weather - 2026-09-08 - Morning - Overcast
66°F 19°C
Overcast
Mid-Afternoon
Onset Weather - 2026-09-08 - Afternoon - Cloudy
80°F 26°C
Cloudy
Early-Evening
Onset Weather - 2026-09-08 - Evening - Overcast
69°F 20°C
Overcast
Warm and summery near 80°F 26°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure.

Wednesday, September 9, 2026

Mid-Morning
Onset Weather - 2026-09-09 - Morning - Overcast
71°F 22°C
Overcast
Mid-Afternoon
Onset Weather - 2026-09-09 - Afternoon - Partly Cloudy
73°F 23°C
Partly Cloudy
Early-Evening
Onset Weather - 2026-09-09 - Evening - Overcast
72°F 22°C
Overcast
Comfortable with temperatures reaching 73°F 23°C, overcast in the morning, partly cloudy in the afternoon, and overcast this evening, with increasing humidity and barometric pressure falling. Winds picking up from WNW at 2 mph 3 km/h to SSW at 13 mph 21 km/h. Gusts up to 29 mph 46 km/h.

Thursday, September 10, 2026

Mid-Morning
Onset Weather - 2026-09-10 - Morning - Scattered Showers
74°F 23°C
Scattered Showers
Mid-Afternoon
Onset Weather - 2026-09-10 - Afternoon - Partly Cloudy
76°F 24°C
Partly Cloudy
Early-Evening
Onset Weather - 2026-09-10 - Evening - Overcast
73°F 23°C
Overcast
Enjoyable around 76°F 24°C, locally heavy downpours at times, with steady humidity and barometric pressure falling. Winds switching from the SW to the WSW at 13 mph 21 km/h. Gusts up to 30 mph 48 km/h.

Friday, September 11, 2026

Mid-Morning
Onset Weather - 2026-09-11 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Onset Weather - 2026-09-11 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
Onset Weather - 2026-09-11 - Evening - Sunny
65°F 18°C
Sunny
Mild temperatures up to 75°F 24°C, sunny throughout the day, with steady humidity and barometric pressure rising. Winds moving from the NNW to the S at 4 mph 7 km/h.

Saturday, September 12, 2026

Mid-Morning
Onset Weather - 2026-09-12 - Morning - Overcast
66°F 19°C
Overcast
Mid-Afternoon
Onset Weather - 2026-09-12 - Afternoon - Cloudy
72°F 22°C
Cloudy
Early-Evening
Onset Weather - 2026-09-12 - Evening - Overcast
65°F 19°C
Overcast
Mild with a high of 72°F 22°C, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with increasing humidity and steady pressure. Winds swinging from the NNE to the S at 9 mph 14 km/h.

Sunday, September 13, 2026

Mid-Morning
Onset Weather - 2026-09-13 - Morning - Overcast
70°F 21°C
Overcast
Mid-Afternoon
Onset Weather - 2026-09-13 - Afternoon - Sunny
76°F 25°C
Sunny
Early-Evening
Onset Weather - 2026-09-13 - Evening - Cloudy
70°F 21°C
Cloudy
Pleasant near 76°F 25°C, overcast in the morning, sunny in the afternoon, and partly cloudy this evening, with increasing humidity and steady pressure. Winds shifting from the S to the SW at 8 mph 12 km/h.

Monday, September 14, 2026

Mid-Morning
Onset Weather - 2026-09-14 - Morning - Overcast
71°F 22°C
Overcast
Mid-Afternoon
Onset Weather - 2026-09-14 - Afternoon - Overcast
67°F 20°C
Overcast
Early-Evening
Onset Weather - 2026-09-14 - Evening - Overcast
65°F 19°C
Overcast
Comfortable at 67°F 20°C, overcast throughout the day, with steady humidity and steady pressure.

Tuesday, September 15, 2026

Mid-Morning
Onset Weather - 2026-09-15 - Morning - Overcast
65°F 18°C
Overcast
Mid-Afternoon
Onset Weather - 2026-09-15 - Afternoon - Rain
64°F 18°C
Rain
Early-Evening
Onset Weather - 2026-09-15 - Evening - Scattered Showers
66°F 19°C
Scattered Showers
Cool with a high near 64°F 18°C, scattered downpours possible, with increasing humidity and barometric pressure falling. Winds turning from the E to the S at 12 mph 19 km/h. Gusts up to 29 mph 46 km/h.

Wednesday, September 16, 2026

Mid-Morning
Onset Weather - 2026-09-16 - Morning - Overcast
73°F 23°C
Overcast
Mid-Afternoon
Onset Weather - 2026-09-16 - Afternoon - Light Showers
80°F 27°C
Light Showers
Early-Evening
Onset Weather - 2026-09-16 - Evening - Overcast
64°F 18°C
Overcast
Very warm near 80°F 27°C, though humidity makes it feel like 85°F 29°C, dry early, with showers developing in the afternoon, with lower humidity and barometric pressure rising. Winds switching from the SW to the NE at 9 mph 14 km/h.

Thursday, September 17, 2026

Mid-Morning
Onset Weather - 2026-09-17 - Morning - Overcast
61°F 16°C
Overcast
Mid-Afternoon
Onset Weather - 2026-09-17 - Afternoon - Overcast
65°F 18°C
Overcast
Early-Evening
Onset Weather - 2026-09-17 - Evening - Overcast
61°F 16°C
Overcast
Mildly cool near 65°F 18°C, overcast throughout the day, with increasing humidity and steady pressure. Winds moving from the NE to the NNE at 7 mph 12 km/h.

Friday, September 18, 2026

Mid-Morning
Onset Weather - 2026-09-18 - Morning - Partly Cloudy
60°F 16°C
Partly Cloudy
Mid-Afternoon
Onset Weather - 2026-09-18 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Onset Weather - 2026-09-18 - Evening - Sunny
62°F 16°C
Sunny
Pleasant near 71°F 22°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling.

Saturday, September 19, 2026

Mid-Morning
Onset Weather - 2026-09-19 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Onset Weather - 2026-09-19 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Onset Weather - 2026-09-19 - Evening - Sunny
62°F 17°C
Sunny
Comfortable with temperatures reaching 71°F 22°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the SW to the SSW at 8 mph 13 km/h.

Sunday, September 20, 2026

Mid-Morning
Onset Weather - 2026-09-20 - Morning - Sunny
65°F 19°C
Sunny
Mid-Afternoon
Onset Weather - 2026-09-20 - Afternoon - Overcast
75°F 24°C
Overcast
Early-Evening
Onset Weather - 2026-09-20 - Evening - Overcast
67°F 20°C
Overcast
Enjoyable around 75°F 24°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds shifting from the SW to the NW at 9 mph 15 km/h. Gusts up to 20 mph 32 km/h.

Monday, September 21, 2026

Mid-Morning
Onset Weather - 2026-09-21 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Onset Weather - 2026-09-21 - Afternoon - Sunny
58°F 14°C
Sunny
Early-Evening
Onset Weather - 2026-09-21 - Evening - Sunny
55°F 13°C
Sunny
Mildly cool near 58°F 14°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the NNE to the SE at 10 mph 16 km/h. Gusts up to 21 mph 33 km/h.

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Weather by the Numbers

Tue, 8th
Onset MA Weather - Tuesday, Sep 8, 2026 - Overcast
Hi: 81°F 27°C
Lo: 53°F 12°C
Sunrise 06:16 AM
Sunset 07:04 PM
Wind NW 5 mph8 km/h
Dew Point 52°F11°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 10% *
Humidity 39%
Wed, 9th
Onset MA Weather - Wednesday, Sep 9, 2026 - Overcast
Hi: 77°F 25°C
Lo: 62°F 17°C
Sunrise 06:17 AM
Sunset 07:03 PM
Wind SSW 9 mph14 km/h
Dew Point 58°F14°C
uv Index 6
Barometric Pressure 30.18 in1022 mb
POP 13% *
Humidity 56%
Thu, 10th
Onset MA Weather - Thursday, Sep 10, 2026 - Patchy Rain Nearby
Hi: 80°F 27°C
Lo: 70°F 21°C
Sunrise 06:18 AM
Sunset 07:01 PM
Wind SW 11 mph17 km/h
Dew Point 67°F19°C
uv Index 5
Barometric Pressure 29.83 in1010 mb
POP 35% *
Humidity 84%
Fri, 11th
Onset MA Weather - Friday, Sep 11, 2026 - Sunny
Hi: 75°F 24°C
Lo: 59°F 15°C
Sunrise 06:19 AM
Sunset 06:59 PM
Wind NW 7 mph12 km/h
Dew Point 45°F7°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 39%
Sat, 12th
Onset MA Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 74°F 23°C
Lo: 53°F 12°C
Sunrise 06:20 AM
Sunset 06:57 PM
Wind S 6 mph10 km/h
Dew Point 52°F11°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 2% *
Humidity 50%
Sun, 13th
Onset MA Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 77°F 25°C
Lo: 63°F 17°C
Sunrise 06:21 AM
Sunset 06:56 PM
Wind SSW 11 mph18 km/h
Dew Point 59°F15°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 9% *
Humidity 60%
Mon, 14th
Onset MA Weather - Monday, Sep 14, 2026 - Overcast
Hi: 76°F 25°C
Lo: 62°F 17°C
Sunrise 06:22 AM
Sunset 06:54 PM
Wind SW 5 mph9 km/h
Dew Point 56°F14°C
uv Index 5
Barometric Pressure 30.09 in1019 mb
POP 13% *
Humidity 56%
Tue, 15th
Onset MA Weather - Tuesday, Sep 15, 2026 - Overcast
Hi: 71°F 22°C
Lo: 61°F 16°C
Sunrise 06:23 AM
Sunset 06:52 PM
Wind SE 10 mph16 km/h
Dew Point 54°F12°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 16% *
Humidity 66%
Wed, 16th
Onset MA Weather - Wednesday, Sep 16, 2026 - Patchy Rain Nearby
Hi: 82°F 28°C
Lo: 57°F 14°C
Sunrise 06:24 AM
Sunset 06:50 PM
Wind SW 10 mph17 km/h
Dew Point 72°F22°C
uv Index 6
Barometric Pressure 29.85 in1011 mb
POP 24% *
Humidity 82%
Thu, 17th
Onset MA Weather - Thursday, Sep 17, 2026 - Overcast
Hi: 66°F 19°C
Lo: 55°F 13°C
Sunrise 06:25 AM
Sunset 06:49 PM
Wind NE 12 mph19 km/h
Dew Point 48°F9°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 13% *
Humidity 55%
Fri, 18th
Onset MA Weather - Friday, Sep 18, 2026 - Sunny
Hi: 73°F 23°C
Lo: 56°F 13°C
Sunrise 06:26 AM
Sunset 06:47 PM
Wind SE 4 mph7 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 30.33 in1027 mb
POP 3% *
Humidity 42%
Sat, 19th
Onset MA Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 73°F 23°C
Lo: 54°F 12°C
Sunrise 06:27 AM
Sunset 06:45 PM
Wind SSW 8 mph12 km/h
Dew Point 50°F10°C
uv Index 6
Barometric Pressure 30.18 in1022 mb
POP 2% *
Humidity 47%
Sun, 20th
Onset MA Weather - Sunday, Sep 20, 2026 - Cloudy
Hi: 77°F 25°C
Lo: 56°F 13°C
Sunrise 06:28 AM
Sunset 06:43 PM
Wind SW 12 mph19 km/h
Dew Point 54°F12°C
uv Index 5
Barometric Pressure 30 in1016 mb
POP 3% *
Humidity 48%
Mon, 21st
Onset MA Weather - Monday, Sep 21, 2026 - Sunny
Hi: 60°F 16°C
Lo: 52°F 11°C
Sunrise 06:29 AM
Sunset 06:42 PM
Wind NNE 17 mph27 km/h
Dew Point 37°F3°C
uv Index 4
Barometric Pressure 30.42 in1030 mb
POP 2% *
Humidity 46%
* POP = Probability of Precipitation. Data for 12:00 PM.