Spring (March–May): Average -1.7–11.6°C, cold and dry climate, windy, low rainfall. Common activities: Hiking (dress warmly), birdwatching. Suggested clothing: Thick coat, warm clothing, hat, scarf, waterproof jacket.
Summer (June–August): Average 16.2–20.3°C, mild climate, low rainfall. Common activities: Camping, hiking, boating. Suggested clothing: Light and breathable clothing, sun protection clothing, sun hat.
Autumn (September–November): Average 10.1–18.6°C, cool and dry climate, low rainfall. Common activities: Viewing autumn leaves (if applicable), outdoor walks. Suggested clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average -8.7–-1.7°C, cold and dry climate, very little rainfall. Common activities: Skiing (if nearby), indoor activities. Suggested clothing: Heavy coat, warm clothing, hat, gloves, scarf, waterproof boots.
Cohasset climatological average
Annual average temperature: approx. 6.8°C / Annual rainfall: approx. 25 mm / Summer humidity: 40%–50% / Rainiest month: June
Cohasset monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-8.7°C
0.5
February
-2.9°C
0.8
March
-1.7°C
1.3
April
5.1°C
2.3
May
11.6°C
3.3
June
16.2°C
4.7
July
20.3°C
3.2
August
19°C
2.9
September
18.6°C
1.6
October
10.1°C
1.2
November
1.1°C
1.9
December
-7.2°C
1.8
Cohasset weather for the next seven days
12/2
Tuesday
Overcast
-4.4°C/-11.1°C
12/3
Wednesday
Overcast
-5.9°C/-15.8°C
12/4
Thursday
Overcast
-11.5°C/-22.4°C
12/5
Friday
Light snow
-4.5°C/-12.8°C
12/6
Saturday
Light snow
-6.1°C/-11.1°C
12/7
Sunday
Partly Cloudy
-9.7°C/-16.9°C
12/8
Monday
Partly Cloudy
-9.5°C/-18.3°C
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