Cohasset, MA Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Cohasset, MA.

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Current Conditions — Cohasset, MA

BOSTON (KBOS)

Mostly Cloudy

60.8 F
Humidity:27%
Wind Speed:W 16.1 G 21.9 mph
Barometer:29.78 in
Dewpoint:26.6 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
May 8 2026, 01:50 PM EDT
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5-Day Forecast — Cohasset, MA

Friday

High 64 °F
Chance of Rain Showers
Friday
Night
Low 46 °F
Mostly Cloudy
Saturday

High 59 °F
Rain Showers
Saturday
Night
Low 50 °F
T-storms
Sunday

High 73 °F
Mostly Cloudy
Sunday
Night
Low 48 °F
Rain Likely
Monday

High 57 °F
Rain Showers Likely
Monday
Night
Low 44 °F
Rain
Tuesday

High 59 °F
Chance of Showers

Detailed Forecast — Cohasset, MA

Friday
Chance of Rain Showers. High near 64°F. Wind 9 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly Cloudy. Low around 46°F. Wind 6 to 10 mph, with gusts as high as 12 mph.
Saturday
Rain Showers. High near 59°F. Wind 5 to 16 mph, with gusts as high as 22 mph.
Saturday Night
Thunderstorms. Low around 50°F. Wind 8 to 14 mph, with gusts as high as 20 mph.
Sunday
Mostly Cloudy. High near 73°F. Wind 7 to 9 mph, with gusts as high as 16 mph.
Sunday Night
Rain Likely. Low around 48°F. Wind 5 to 6 mph, with gusts as high as 13 mph.
Monday
Rain Showers Likely. High near 57°F. Wind 5 to 6 mph, with gusts as high as 10 mph.
Monday Night
Rain. Low around 44°F. Wind 3 to 7 mph, with gusts as high as 14 mph.
Tuesday
Chance of Showers. High near 59°F. Wind 8 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Partly Cloudy. Low around 44°F. Wind 3 to 6 mph, with gusts as high as 12 mph.
Wednesday
Mostly Cloudy. High near 62°F. Wind 5 to 8 mph, with gusts as high as 12 mph.
Wednesday Night
Chance of Rain. Low around 46°F. Wind 5 to 7 mph, with gusts as high as 14 mph.
Thursday
Chance of Rain Showers. High near 60°F. Wind 5 to 9 mph, with gusts as high as 14 mph.
MA Radar
Current Radar • MA
Day 1 Outlook • May 8, 2026

Observation History — Cohasset, MA

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
01:50 PM EDT W 16.1 G 21.9 10.00 Mostly Cloudy -- 60.8 26.6 27% NA NA 29.78 1008.5
01:45 PM EDT G 25.3 10.00 Mostly Cloudy -- 60.8 26.6 27% NA NA 29.78 1008.5
01:35 PM EDT W 16.1 G 25.3 10.00 Mostly Cloudy -- 60.8 28.4 29% NA NA 29.78 1008.5
01:25 PM EDT SW 15.0 10.00 Cloudy -- 60.8 28.4 29% NA NA 29.78 1008.5
01:20 PM EDT 18.4 10.00 Mostly Cloudy -- 60.8 28.4 29% NA NA 29.78 1008.5
01:05 PM EDT 18.4 10.00 Mostly Cloudy -- 60.8 28.4 29% NA NA 29.78 1008.5
01:00 PM EDT 10.00 Mostly Cloudy -- 59.0 28.4 31% NA NA 29.78 1008.5
12:50 PM EDT W 16.1 G 25.3 10.00 Mostly Cloudy -- 59.0 28.4 31% NA NA 29.78 1008.5
12:45 PM EDT W 18.4 G 24.2 10.00 Partly Cloudy -- 60.8 28.4 29% NA NA 29.78 1008.5
12:30 PM EDT W 13.8 10.00 Partly Cloudy -- 59.0 28.4 31% NA NA 29.79 1008.8
12:20 PM EDT SW 12.7 10.00 Mostly Cloudy -- 60.8 28.4 29% NA NA 29.79 1008.8
12:15 PM EDT 18.4 10.00 Mostly Cloudy -- 60.8 28.4 29% NA NA 29.79 1008.8
12:05 PM EDT W 10.4 10.00 Partly Cloudy -- 57.2 28.4 33% NA NA 29.79 1008.8
12:00 PM EDT W 15.0 10.00 Partly Cloudy -- 60.8 28.4 29% NA NA 29.80 1009.1
11:50 AM EDT W 5.7 10.00 Partly Cloudy -- 59.0 28.4 31% NA NA 29.80 1009.1
11:30 AM EDT W 11.5 G 19.6 10.00 Mostly Cloudy -- 57.2 28.4 33% NA NA 29.81 1009.5
11:25 AM EDT W 5.7 10.00 Mostly Cloudy -- 57.2 28.4 33% NA NA 29.81 1009.5
11:20 AM EDT W 9.2 10.00 Mostly Cloudy -- 57.2 28.4 33% NA NA 29.81 1009.5
11:10 AM EDT W 11.5 G 17.3 10.00 Partly Cloudy -- 57.2 26.6 31% NA NA 29.81 1009.5
11:05 AM EDT W 11.5 10.00 Partly Cloudy -- 59.0 28.4 31% NA NA 29.81 1009.5
11:00 AM EDT W 13.8 10.00 Partly Cloudy -- 59.0 28.4 31% NA NA 29.81 1009.5
10:50 AM EDT 13.8 G 19.6 10.00 Partly Cloudy -- 57.2 28.4 33% NA NA 29.81 1009.5
10:45 AM EDT W 11.5 10.00 Mostly Clear -- 57.2 28.4 33% NA NA 29.81 1009.5
10:40 AM EDT 11.5 G 18.4 10.00 Clear -- 57.2 28.4 33% NA NA 29.81 1009.5

Regional Weather Observation

BOSTON (KBOS)

Mostly Cloudy
60.8 F

NORWOOD (KOWD)

Mostly Clear
60.8 F

LAWRENCE (KLWM)

Cloudy
57.2 F

BEDFORD (KBED)

Mostly Cloudy
60.8 F

BEVERLY (KBVY)

Mostly Cloudy
60.8 F

MARSHFIELD (KGHG)

Mostly Cloudy
59.0 F
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