Temperature Data | Precipitation Data | Detailed Data

Annual Climatology: Seattle, WA (SEA)

Elev: 121.9 m    Lat: 47o 28'N    Long: 122o 19'W

Seattle Metric Units

Figure 1: Average Temperatures and Precipitation 1971-2000. (NCDC Data)

 

 


Temperature Data (oC) :

Month

Daily Max

Daily Min

Mean

Maximum Daily Temperature

Minimum Daily Temperature

January

7.7

2.2

4.9

17.8

-17.8

February

9.7

2.9

6.3

21.1

-17.2

March

11.8

3.9

7.9

23.9

-11.7

April

14.6

5.6

10.1

29.4

-1.7

May

18.0

8.4

13.2

33.9

-2.2

June

20.9

10.9

15.9

35.6

3.3

July

24.1

12.9

18.5

37.8

6.1

August

24.2

13.2

18.7

37.2

6.7

September

21.2

11.1

16.2

36.7

1.7

October

15.4

7.6

11.5

31.7

-2.2

November

10.3

4.4

7.3

23.3

-14.4

December

7.5

2.2

4.8

17.8

-14.4

Annual

15.4

7.1

11.3

37.8

-17.8

 

Precipitation Data (mm):

Month

Mean

Median

Extreme

Year

Snow*

January

130.3

124.5

239.0

1990

61.0

February

106.2

111.5

212.1

1996

33.0

March

95.3

94.0

207.0

1997

15.2

April

65.8

60.7

165.9

1991

2.5

May

45.2

42.2

94.0

1977

0.0

June

37.8

35.1

77.5

1990

0.0

July

20.1

16.8

60.7

1983

0.0

August

25.9

16.5

116.6

1975

0.0

September

41.4

37.1

151.1

1978

0.0

October

81.0

75.9

196.9

1975

2.5

November

149.9

135.1

295.1

1998

27.9

December

142.7

134.9

301.0

1979

63.5

Annual

941.6

902.0

 

 

205.7

* Snowfall totals represent mean snowfall 1971-2000


 
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