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August weather forecast in Somerville

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

27 July, sun

	755 mmHg		70%
	4.1 m/s

27 July, Sunday. day, 28°; night, 19°; clear

28 July, mon

	755 mmHg		73%
	3.8 m/s

28 July, Monday. day, 28°; night, 19°; rain

29 July, tue

	755 mmHg		72%
	3.8 m/s

29 July, Tuesday. day, 28°; night, 19°; overcast

30 July, wed

	756 mmHg		68%
	3.8 m/s

30 July, Wednesday. day, 28°; night, 19°; clear

31 July, thu

	757 mmHg		69%
	3.5 m/s

31 July, Thursday. day, 27°; night, 18°; clear

1 August, fri

	757 mmHg		71%
	3.6 m/s

1 August, Friday. day, 28°; night, 18°; partly cloudy

2 August, sat

	756 mmHg		69%
	3.5 m/s

2 August, Saturday. day, 28°; night, 19°; clear

3 August, sun

	756 mmHg		71%
	3.7 m/s

3 August, Sunday. day, 28°; night, 19°; rain

4 August, mon

	756 mmHg		75%
	3.8 m/s

4 August, Monday. day, 28°; night, 19°; rain

5 August, tue

	756 mmHg		73%
	3.8 m/s

5 August, Tuesday. day, 28°; night, 19°; partly cloudy

6 August, wed

	756 mmHg		70%
	3.9 m/s

6 August, Wednesday. day, 27°; night, 18°; clear

7 August, thu

	756 mmHg		70%
	3.9 m/s

7 August, Thursday. day, 27°; night, 18°; rain

8 August, fri

	756 mmHg		71%
	3.6 m/s

8 August, Friday. day, 27°; night, 18°; rain

9 August, sat

	756 mmHg		69%
	4.1 m/s

9 August, Saturday. day, 28°; night, 18°; clear

10 August, sun

	755 mmHg		69%
	3.9 m/s

10 August, Sunday. day, 28°; night, 19°; rain

11 August, mon

	755 mmHg		71%
	3.9 m/s

11 August, Monday. day, 27°; night, 19°; rain

12 August, tue

	756 mmHg		73%
	3.8 m/s

12 August, Tuesday. day, 27°; night, 19°; rain

13 August, wed

	756 mmHg		74%
	3.7 m/s

13 August, Wednesday. day, 26°; night, 19°; rain

14 August, thu

	756 mmHg		72%
	3.8 m/s

14 August, Thursday. day, 27°; night, 18°; partly cloudy

15 August, fri

	757 mmHg		74%
	3.8 m/s

15 August, Friday. day, 26°; night, 18°; rain

16 August, sat

	757 mmHg		74%
	3.8 m/s

16 August, Saturday. day, 27°; night, 18°; partly cloudy

17 August, sun

	757 mmHg		72%
	3.6 m/s

17 August, Sunday. day, 27°; night, 18°; partly cloudy

18 August, mon

	756 mmHg		71%
	3.9 m/s

18 August, Monday. day, 27°; night, 18°; overcast

19 August, tue

	756 mmHg		68%
	3.8 m/s

19 August, Tuesday. day, 26°; night, 18°; clear

20 August, wed

	757 mmHg		69%
	3.7 m/s

20 August, Wednesday. day, 26°; night, 17°; clear

21 August, thu

	757 mmHg		73%
	3.8 m/s

21 August, Thursday. day, 27°; night, 17°; partly cloudy

22 August, fri

	756 mmHg		73%
	4.1 m/s

22 August, Friday. day, 26°; night, 18°; rain

23 August, sat

	757 mmHg		71%
	3.9 m/s

23 August, Saturday. day, 25°; night, 17°; clear

24 August, sun

	757 mmHg		70%
	3.8 m/s

24 August, Sunday. day, 26°; night, 17°; clear

25 August, mon

	758 mmHg		72%
	3.8 m/s

25 August, Monday. day, 26°; night, 17°; clear

26 August, tue

	758 mmHg		70%
	3.7 m/s

26 August, Tuesday. day, 27°; night, 17°; clear

27 August, wed

	757 mmHg		71%
	3.6 m/s

27 August, Wednesday. day, 26°; night, 17°; clear

28 August, thu

	757 mmHg		74%
	3.9 m/s

28 August, Thursday. day, 26°; night, 17°; overcast

29 August, fri

	757 mmHg		73%
	4 m/s

29 August, Friday. day, 25°; night, 17°; partly cloudy

30 August, sat

	757 mmHg		71%
	4 m/s

30 August, Saturday. day, 26°; night, 17°; clear

31 August, sun

	757 mmHg		68%
	4.19 m/s

31 August, Sunday. day, 26°; night, 17°; clear

1 September, mon

	758 mmHg		69%
	3.9 m/s

1 September, Monday. day, 25°; night, 17°; partly cloudy

2 September, tue

	758 mmHg		72%
	3.9 m/s

2 September, Tuesday. day, 24°; night, 16°; partly cloudy

3 September, wed

	757 mmHg		73%
	3.8 m/s

3 September, Wednesday. day, 25°; night, 16°; partly cloudy

4 September, thu

	756 mmHg		72%
	3.8 m/s

4 September, Thursday. day, 26°; night, 16°; clear

5 September, fri

	758 mmHg		69%
	4.19 m/s

5 September, Friday. day, 25°; night, 16°; clear

6 September, sat

	759 mmHg		72%
	4 m/s

6 September, Saturday. day, 25°; night, 15°; clear

Average data for 10 years

Somerville August

12

sunny days

10

days with precipitation

6

cloudy days

12 sunny days; 10 days with precipitation; 6 cloudy days;

71

%

air humidity

2.6

m/s

WindSW

88

mm of precipitation

(8% of annual average)

air humidity 71%; 88 millimeters of precipitation (8% of annual average); Wind south-westerly 2.6 Meters per second

Weather graphs for August

TemperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

SW

SW

SW

S

SW

SW

SW

SW

SW

SW

SW

S

S

SW

S

S

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

SW

S

S

SW

SW

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

New York
Boston
Islandia
Montreal
Colchester
Jamaica
Brookhaven
Lake George
Portland

Cities with similar weather in August

Toronto
Rio de Janeiro
Marseilles
Casablanca
Balkhash
Bali
San Remo
Triest
Loanda

The weather forecast for August 2025 is based on historical data from the past 10 years.

August in Somerville is the sunniest month of the year. In August, the weather in Somerville is typically warm. Average daily high temperature in August is about 27 degrees above zero. On average, Somerville has 12 sunny, 10 rainy, 7 partly cloudy, and 2 cloudy days in August. The rains are usually heavy.

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