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Current weather in Onset is overcast clouds.

Where can I find the hourly weather forecast for Onset?

This page shows hourly weather forecast for Onset, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Onset updated regularly?

Weather data for Onset is updated regularly with the latest available observations and forecasts.

Now · 3:52 PM

Onset Weather & Hourly Forecast

United States · Massachusetts · 02558

72°F

Overcast

Feels like: 69°F

💧 Humidity 50% 🌡 Pressure 30.12 inHg 💨 Wind 7 mph 👁 Visibility 30.3 mi ☁ Clouds 100% ☀️ UV index 3.8 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Onset

Today

4:00 PM

Overcast

72° 💧 None 💨 7 mph H 50%30.12 inHg

7:00 PM

Partly cloudy night

66° 💧 None 💨 6 mph H 67%30.09 inHg

10:00 PM

Mostly cloudy night

63° 💧 None 💨 7 mph H 90%30.12 inHg

Tomorrow

1:00 AM

Mostly clear night

66° 💧 None 💨 8 mph H 90%30.09 inHg

4:00 AM

Mostly cloudy night

68° 💧 None 💨 9 mph H 87%30.03 inHg

7:00 AM

Overcast

69° 💧 0.032 in 💨 9 mph H 85%30.00 inHg

10:00 AM

Light rain

70° 💧 0.361 in 💨 11 mph H 96%29.94 inHg

1:00 PM

Moderate rain

71° 💧 0.659 in 💨 13 mph H 98%29.88 inHg

4:00 PM

Light rain

71° 💧 0.107 in 💨 9 mph H 98%29.80 inHg

7:00 PM

Partly cloudy night

71° 💧 None 💨 7 mph H 98%29.80 inHg

10:00 PM

Mostly clear night

70° 💧 None 💨 7 mph H 99%29.83 inHg

Monday

1:00 AM

Clear night

69° 💧 None 💨 7 mph H 99%29.80 inHg

4:00 AM

Mostly clear night

69° 💧 None 💨 9 mph H 97%29.83 inHg

7:00 AM

Partly cloudy

64° 💧 0.026 in 💨 9 mph H 94%29.88 inHg

10:00 AM

Sunny

68° 💧 0.000 in 💨 7 mph H 85%29.94 inHg

1:00 PM

Sunny

74° 💧 None 💨 10 mph H 48%29.94 inHg

Today

4:00 PM

Overcast

72° 💧 None 💨 7 mph H 50%30.12 inHg

5:00 PM

Overcast

71° 💧 None 💨 7 mph H 55%30.12 inHg

6:00 PM

Mostly cloudy

69° 💧 None 💨 6 mph H 60%30.09 inHg

7:00 PM

Partly cloudy night

66° 💧 None 💨 6 mph H 67%30.09 inHg

8:00 PM

Mostly clear night

64° 💧 None 💨 6 mph H 76%30.12 inHg

9:00 PM

Partly cloudy night

63° 💧 None 💨 6 mph H 84%30.12 inHg

10:00 PM

Mostly cloudy night

63° 💧 None 💨 7 mph H 90%30.12 inHg

11:00 PM

Partly cloudy night

64° 💧 None 💨 7 mph H 93%30.12 inHg

Tomorrow

12:00 AM

Clear night

65° 💧 None 💨 8 mph H 93%30.09 inHg

1:00 AM

Mostly clear night

66° 💧 None 💨 8 mph H 90%30.09 inHg

2:00 AM

Overcast night

67° 💧 None 💨 9 mph H 89%30.06 inHg

3:00 AM

Mostly cloudy night

67° 💧 None 💨 9 mph H 87%30.06 inHg

4:00 AM

Mostly cloudy night

68° 💧 None 💨 9 mph H 87%30.03 inHg

5:00 AM

Overcast night

68° 💧 None 💨 9 mph H 87%30.03 inHg

6:00 AM

Overcast night

68° 💧 None 💨 8 mph H 87%30.00 inHg

7:00 AM

Overcast

69° 💧 None 💨 9 mph H 85%30.00 inHg

8:00 AM

Overcast

71° 💧 None 💨 9 mph H 82%30.00 inHg

9:00 AM

Light rain

71° 💧 0.032 in 💨 11 mph H 88%29.97 inHg

10:00 AM

Light rain

70° 💧 0.086 in 💨 11 mph H 96%29.94 inHg

11:00 AM

Moderate rain

70° 💧 0.117 in 💨 14 mph H 97%29.94 inHg

12:00 PM

Moderate rain

71° 💧 0.158 in 💨 14 mph H 97%29.91 inHg

1:00 PM

Moderate rain

71° 💧 0.210 in 💨 13 mph H 98%29.88 inHg

2:00 PM

Thunderstorms

71° 💧 0.276 in 💨 9 mph H 98%29.85 inHg

3:00 PM

Thunderstorms

71° 💧 0.173 in 💨 8 mph H 99%29.83 inHg

4:00 PM

Light rain

71° 💧 0.096 in 💨 9 mph H 98%29.80 inHg

5:00 PM

Light rain

72° 💧 0.010 in 💨 10 mph H 97%29.80 inHg

6:00 PM

Overcast

72° 💧 0.001 in 💨 9 mph H 97%29.80 inHg

7:00 PM

Partly cloudy night

71° 💧 None 💨 7 mph H 98%29.80 inHg

8:00 PM

Partly cloudy night

71° 💧 None 💨 7 mph H 99%29.80 inHg

9:00 PM

Clear night

70° 💧 None 💨 7 mph H 99%29.83 inHg

10:00 PM

Mostly clear night

70° 💧 None 💨 7 mph H 99%29.83 inHg

11:00 PM

Clear night

70° 💧 None 💨 6 mph H 99%29.83 inHg

Monday

12:00 AM

Clear night

70° 💧 None 💨 7 mph H 99%29.83 inHg

1:00 AM

Clear night

69° 💧 None 💨 7 mph H 99%29.80 inHg

2:00 AM

Clear night

69° 💧 None 💨 7 mph H 99%29.80 inHg

3:00 AM

Mostly cloudy night

69° 💧 None 💨 8 mph H 98%29.80 inHg

4:00 AM

Mostly clear night

69° 💧 None 💨 9 mph H 97%29.83 inHg

5:00 AM

Mostly clear night

67° 💧 None 💨 8 mph H 96%29.83 inHg

6:00 AM

Mostly clear night

65° 💧 None 💨 9 mph H 95%29.85 inHg

7:00 AM

Partly cloudy

64° 💧 None 💨 9 mph H 94%29.88 inHg

8:00 AM

Overcast

65° 💧 None 💨 10 mph H 89%29.91 inHg

9:00 AM

Light rain

65° 💧 0.026 in 💨 8 mph H 90%29.91 inHg

10:00 AM

Sunny

68° 💧 0.000 in 💨 7 mph H 85%29.94 inHg

11:00 AM

Sunny

72° 💧 None 💨 10 mph H 66%29.94 inHg

12:00 PM

Sunny

74° 💧 None 💨 10 mph H 53%29.94 inHg

1:00 PM

Sunny

74° 💧 None 💨 10 mph H 48%29.94 inHg

2:00 PM

Sunny

75° 💧 None 💨 10 mph H 46%29.94 inHg

3:00 PM

Sunny

75° 💧 None 💨 9 mph H 46%29.97 inHg

4:00 PM

Sunny

74° 💧 None 💨 9 mph H 47%29.97 inHg

5:00 PM

Sunny

73° 💧 None 💨 9 mph H 48%30.00 inHg

6:00 PM

Sunny

70° 💧 None 💨 8 mph H 53%30.03 inHg

7:00 PM

Clear night

66° 💧 None 💨 8 mph H 58%30.06 inHg

8:00 PM

Clear night

64° 💧 None 💨 10 mph H 56%30.12 inHg

9:00 PM

Clear night

63° 💧 None 💨 9 mph H 59%30.15 inHg

10:00 PM

Clear night

61° 💧 None 💨 9 mph H 62%30.18 inHg

11:00 PM

Clear night

60° 💧 None 💨 8 mph H 65%30.21 inHg

Tuesday

12:00 AM

Clear night

59° 💧 None 💨 8 mph H 66%30.21 inHg

1:00 AM

Clear night

58° 💧 None 💨 7 mph H 71%30.21 inHg

2:00 AM

Clear night

58° 💧 None 💨 7 mph H 73%30.24 inHg

3:00 AM

Clear night

56° 💧 None 💨 6 mph H 76%30.24 inHg

4:00 AM

Clear night

56° 💧 None 💨 6 mph H 78%30.24 inHg

5:00 AM

Clear night

55° 💧 None 💨 6 mph H 80%30.27 inHg

6:00 AM

Clear night

55° 💧 None 💨 5 mph H 82%30.30 inHg

7:00 AM

Sunny

56° 💧 None 💨 5 mph H 82%30.33 inHg

8:00 AM

Sunny

60° 💧 None 💨 5 mph H 75%30.36 inHg

11:00 AM

Sunny

66° 💧 None 💨 7 mph H 57%30.39 inHg

2:00 PM

Mostly sunny

69° 💧 None 💨 4 mph H 56%30.36 inHg

5:00 PM

Mostly sunny

67° 💧 None 💨 4 mph H 60%30.36 inHg

8:00 PM

Clear night

58° 💧 None 💨 6 mph H 82%30.36 inHg

11:00 PM

Clear night

56° 💧 None 💨 4 mph H 88%30.36 inHg

Wednesday

2:00 AM

Mostly clear night

55° 💧 None 💨 2 mph H 90%30.36 inHg

5:00 AM

Overcast night

55° 💧 None 💨 2 mph H 91%30.36 inHg

8:00 AM

Sunny

62° 💧 None 💨 2 mph H 85%30.39 inHg

11:00 AM

Sunny

69° 💧 None 💨 5 mph H 67%30.39 inHg

2:00 PM

Mostly sunny

70° 💧 None 💨 7 mph H 66%30.33 inHg

5:00 PM

Partly cloudy

68° 💧 None 💨 8 mph H 75%30.30 inHg

8:00 PM

Clear night

64° 💧 None 💨 6 mph H 88%30.33 inHg

11:00 PM

Mostly clear night

64° 💧 None 💨 6 mph H 90%30.36 inHg

Thursday

2:00 AM

Overcast night

64° 💧 None 💨 4 mph H 90%30.33 inHg

5:00 AM

Overcast night

65° 💧 None 💨 3 mph H 93%30.30 inHg

8:00 AM

Overcast

68° 💧 None 💨 4 mph H 88%30.33 inHg

11:00 AM

Overcast

72° 💧 None 💨 6 mph H 77%30.33 inHg

2:00 PM

Overcast

75° 💧 None 💨 8 mph H 73%30.30 inHg

5:00 PM

Overcast

72° 💧 None 💨 7 mph H 79%30.24 inHg

8:00 PM

Mostly cloudy night

67° 💧 None 💨 8 mph H 90%30.24 inHg

11:00 PM

Overcast night

67° 💧 None 💨 6 mph H 90%30.21 inHg

Friday

2:00 AM

Light rain

68° 💧 None 💨 7 mph H 88%30.18 inHg

5:00 AM

Mostly cloudy night

66° 💧 None 💨 7 mph H 96%30.15 inHg

8:00 AM

Partly cloudy

69° 💧 None 💨 9 mph H 95%30.12 inHg

2:00 PM

Light rain

75° 💧 None 💨 11 mph H 74%30.03 inHg

8:00 PM

Light rain

70° 💧 None 💨 5 mph H 95%29.97 inHg

Saturday

2:00 AM

Moderate rain

66° 💧 None 💨 11 mph H 98%29.97 inHg

8:00 AM

Overcast

63° 💧 None 💨 11 mph H 82%30.06 inHg

2:00 PM

Mostly cloudy

65° 💧 None 💨 11 mph H 59%30.12 inHg

8:00 PM

Mostly cloudy night

56° 💧 None 💨 5 mph H 73%30.15 inHg

Sunday

2:00 AM

Partly cloudy night

52° 💧 None 💨 4 mph H 84%30.12 inHg

8:00 AM

Overcast

56° 💧 None 💨 4 mph H 76%30.12 inHg

2:00 PM

Overcast

63° 💧 None 💨 3 mph H 53%30.12 inHg

8:00 PM

Mostly cloudy night

55° 💧 None 💨 4 mph H 83%30.12 inHg

Monday

2:00 AM

Mostly clear night

53° 💧 None 💨 4 mph H 91%30.18 inHg

8:00 AM

Overcast

60° 💧 None 💨 7 mph H 83%30.24 inHg

2:00 PM

Overcast

67° 💧 None 💨 11 mph H 54%30.30 inHg

8:00 PM

Mostly cloudy night

56° 💧 None 💨 6 mph H 91%30.30 inHg

Tuesday

2:00 AM

Mostly cloudy night

55° 💧 None 💨 6 mph H 92%30.30 inHg

8:00 AM

Overcast

61° 💧 None 💨 6 mph H 84%30.24 inHg

2:00 PM

Overcast

69° 💧 None 💨 5 mph H 71%30.18 inHg

8:00 PM

Overcast night

62° 💧 None 💨 8 mph H 95%30.15 inHg

Wednesday

2:00 AM

Moderate rain

61° 💧 None 💨 10 mph H 98%30.15 inHg

8:00 AM

Light rain

56° 💧 None 💨 12 mph H 95%30.18 inHg

2:00 PM

Overcast

63° 💧 None 💨 13 mph H 77%30.21 inHg

8:00 PM

Overcast night

57° 💧 None 💨 10 mph H 96%30.27 inHg

Thursday

2:00 AM

Partly cloudy night

57° 💧 None 💨 8 mph H 77%30.30 inHg

8:00 AM

Mostly cloudy

61° 💧 None 💨 10 mph H 67%30.36 inHg

2:00 PM

Overcast

62° 💧 None 💨 13 mph H 65%30.42 inHg

8:00 PM

Mostly cloudy night

58° 💧 None 💨 7 mph H 76%30.39 inHg

Friday

2:00 AM

Mostly cloudy night

56° 💧 None 💨 5 mph H 78%30.39 inHg

8:00 AM

Partly cloudy

61° 💧 None 💨 7 mph H 79%30.39 inHg

2:00 PM

Overcast

67° 💧 None 💨 7 mph H 68%30.36 inHg

8:00 PM

Mostly clear night

57° 💧 None 💨 5 mph H 95%30.33 inHg

Saturday

2:00 AM

Overcast night

55° 💧 None 💨 5 mph H 95%30.24 inHg

8:00 AM

Overcast

61° 💧 None 💨 5 mph H 93%30.21 inHg

2:00 PM

Overcast

70° 💧 None 💨 8 mph H 68%30.12 inHg

8:00 PM

Overcast night

67° 💧 None 💨 10 mph H 89%30.03 inHg

Sunday

2:00 AM

Moderate rain

69° 💧 None 💨 15 mph H 93%29.91 inHg

8:00 AM

Light rain

69° 💧 None 💨 14 mph H 99%29.80 inHg

In Onset and, more broadly, across the state of Massachusetts: The late afternoon will feature a mix of sun and clouds, with temperatures ranging from the mid-60s to low 70s. Winds will be moderate from the south, blowing at around 10 mph, with occasional gusts reaching up to 21 mph. As evening approaches, skies will remain partly cloudy, and temperatures will gradually cool into the upper 50s to low 60s. No precipitation is expected tonight, so conditions will be dry. Overall, it should be a pleasant evening with mild temperatures and gentle breezes.

15-Day Weather Outlook for Onset

TomorrowTomorrow

Thunderstorms 72°/63° 💧 None 💨 14 mph

Monday, Sep 14Mon Sep 14

Partly cloudy 75°/64° 💧 None 💨 10 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 69°/55° 💧 1.185 in 💨 10 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 70°/55° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Overcast 75°/64° 💧 0.004 in 💨 8 mph

Friday, Sep 18Fri Sep 18

Light rain 75°/66° 💧 0.078 in 💨 11 mph

Saturday, Sep 19Sat Sep 19

Moderate rain 70°/63° 💧 0.538 in 💨 11 mph

Sunday, Sep 20Sun Sep 20

Mostly cloudy 63°/52° 💧 None 💨 5 mph

Monday, Sep 21Mon Sep 21

Mostly cloudy 67°/53° 💧 None 💨 11 mph

Tuesday, Sep 22Tue Sep 22

Overcast 69°/55° 💧 0.001 in 💨 6 mph

Wednesday, Sep 23Wed Sep 23

Moderate rain 63°/56° 💧 0.444 in 💨 13 mph

Thursday, Sep 24Thu Sep 24

Overcast 62°/57° 💧 0.112 in 💨 13 mph

Friday, Sep 25Fri Sep 25

Overcast 67°/56° 💧 0.020 in 💨 7 mph

Saturday, Sep 26Sat Sep 26

Overcast 70°/55° 💧 0.006 in 💨 8 mph

Sunday, Sep 27Sun Sep 27

Moderate rain 69°/67° 💧 0.612 in 💨 15 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Onset

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Onset

Hourly forecast · Updated every 2 hours

Moderate

Nearest forecast value 4:00 PM

PM2.5 Fine particles Good 4,3µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 6,7µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Moderate 110,0µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,6µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Sensitive people should reduce strenuous and prolonged outdoor exertion.

UV & HEALTH

UV, Sun & Health Outlook in Onset

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,3High 😐Moderate

Tomorrow UV 2,7Low 😐Moderate

Monday UV 5,7Moderate 🙂Fair

Tuesday UV 6,0High 🙂Fair

Wednesday UV 6,0High 🙂Fair

Thursday UV 6,0High —Unavailable

Friday UV 6,0High —Unavailable

Hourly UV index today

4:00 PMUV 2,1 5:00 PMUV 1,0 6:00 PMUV 0,2 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Caution for sensitive people

People with respiratory or cardiovascular conditions should reduce prolonged outdoor exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Onset

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ONSET, MASSACHUSETTS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 12:00 AM–1:00 AM.

90/100Best-hour score

BEST TIME TONIGHT 12:00 AM–1:00 AM Astronomical darkness: 8:32 PM–4:46 AM

☁ Cloud cover 9% Real hourly forecast for the best viewing hour.

☾ Moonlight 2% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 41° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min63%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Onset were last refreshed today at 3:52 PM. The current forecast period extends through 14/09/2026 at 1:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.