As of 17:08 EDT

Weather in Onset, MA

83°

Onset, Saturday, 8 August, 17:08

Clear. Feels like 91°. High 87°, low 72°.

Pressure29.85 inHg

Wind10 mph W

Humidity77%

Visibility6.2 mi

Dew point75°

See detailed hourly forecast

Sun, 0994° / 71°

94 °

Onset, Sunday, 9 August

Clear. High 94°, low 71°.

Pressure29.88 inHg

Wind9.6 mph SW

Humidity44%

Visibility6.2 mi

Dew point65°

Mon, 1088° / 70°

88 °

Onset, Monday, 10 August

Overcast. High 88°, low 70°.

Pressure29.97 inHg

Wind8.6 mph S

Humidity41%

Visibility6.2 mi

Dew point59°

Tue, 1191° / 70°

0.01

91 °

Onset, Tuesday, 11 August

Light rain. High 91°, low 70°.

Pressure29.80 inHg

Wind11.7 mph NW

Humidity36%

Visibility6.2 mi

Dew point58°

Wed, 1272° / 63°

0.2

72 °

Onset, Wednesday, 12 August

Light rain. High 72°, low 63°.

Pressure29.74 inHg

Wind8.7 mph E

Humidity84%

Visibility6.2 mi

Dew point62°

Thu, 1382° / 61°

0.09

82 °

Onset, Thursday, 13 August

Light rain. High 82°, low 61°.

Pressure29.74 inHg

Wind12.8 mph NW

Humidity64%

Visibility—

Dew point64°

Fri, 1477° / 58°

77 °

Onset, Friday, 14 August

Overcast. High 77°, low 58°.

Pressure29.91 inHg

Wind12.4 mph SW

Humidity47%

Visibility—

Dew point46°

Sat, 1576° / 59°

76 °

Onset, Saturday, 15 August

Clear. High 76°, low 59°.

Pressure30.09 inHg

Wind9.8 mph NE

Humidity44%

Visibility—

Dew point48°

Sun, 1677° / 57°

0.02

77 °

Onset, Sunday, 16 August

Light rain. High 77°, low 57°.

Pressure30.27 inHg

Wind8.1 mph N

Humidity40%

Visibility—

Dew point46°

Mon, 1778° / 61°

78 °

Onset, Monday, 17 August

Overcast. High 78°, low 61°.

Pressure30.21 inHg

Wind14.2 mph SW

Humidity43%

Visibility—

Dew point51°

Tue, 1877° / 69°

0.58

77 °

Onset, Tuesday, 18 August

Rain. High 77°, low 69°.

Pressure30.03 inHg

Wind16.7 mph SW

Humidity62%

Visibility—

Dew point62°

Wed, 1977° / 65°

0.09

77 °

Onset, Wednesday, 19 August

Light rain. High 77°, low 65°.

Pressure29.85 inHg

Wind9 mph NE

Humidity70%

Visibility—

Dew point65°

Thu, 2075° / 64°

0.05

75 °

Onset, Thursday, 20 August

Light rain. High 75°, low 64°.

Pressure29.97 inHg

Wind8.2 mph NE

Humidity62%

Visibility—

Dew point60°

Fri, 2176° / 64°

0.72

76 °

Onset, Friday, 21 August

Heavy rain. High 76°, low 64°.

Pressure30.00 inHg

Wind10.1 mph S

Humidity49%

Visibility—

Dew point54°

Sat, 2273° / 66°

1.33

73 °

Onset, Saturday, 22 August

Heavy rain. High 73°, low 66°.

Pressure29.80 inHg

Wind10.2 mph S

Humidity89%

Visibility—

Dew point67°

Sun, 2373° / 56°

73 °

Onset, Sunday, 23 August

Partly cloudy. High 73°, low 56°.

Pressure29.80 inHg

Wind16.7 mph W

Humidity52%

Visibility—

Dew point49°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Onset, MA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Onset, MA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.