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Weather Forecast for Boston

Massachusetts, United States of America

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Overcast

Current Weather - Boston: 17°C

Massachusetts, United States of America

Overcast

Feels like 18°C

Wind

4 km/h S

Humidity

86%

Pressure

1023 mb

UV Index

0

Visibility

10 km
Overcast

Overcast

Wednesday, September 09, 2026

High

26°C

Low

17°C

Rain Chance

41%

Hourly Forecast

Overcast 18°C
07:00
Overcast 18°C
08:00
Overcast 19°C
09:00
Overcast 20°C
10:00
Overcast 22°C
11:00
Overcast 23°C
12:00
Overcast 24°C
13:00
Overcast 26°C
14:00
Overcast 26°C
15:00
Overcast 25°C
16:00
Overcast 24°C
17:00
Overcast 23°C
18:00
Overcast 23°C
19:00
Light rain shower 22°C
20:00
Overcast 21°C
21:00
Patchy rain nearby 21°C
22:00
Patchy rain nearby 22°C
23:00
Sep 10

Day Statistics

Maximum Wind

23 km/h

Humidity

74%

Precipitation

0 mm

UV Index

6

Visibility

10 km

Rain Chance

41%

Snow Chance

0%

Sun & Moon

Sunrise

06:18 AM

Sunset

07:05 PM

Moonrise

03:58 AM

Moonset

06:14 PM

Moon Phase

New Moon

Moon Illumination

2%

Air Quality

PM2.5

16.6

μg/m³

PM10

17.9

μg/m³

NO₂

28.9

μg/m³

O₃

64.1

μg/m³

SO₂

1.5

μg/m³

CO

262.5

μg/m³

US EPA Index: 2 GB DEFRA Index: 2

Weather Alerts

Small Craft Advisory issued September 8 at 1:49PM EDT until September 10 at 8:00PM EDT by NWS Boston/Norton MA

Boston Harbor Sep 8, 01:49 PM - Sep 9, 08:00 AM
Severity: Minor Urgency: Expected

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and waves around 2 feet expected. * WHERE...Boston Harbor. * WHEN...From 8 PM Wednesday to 8 PM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Event: Small Craft Advisory Certainty: Likely Category: Met