Temperature Data | Precipitation Data | Detailed Data

Annual Climatology: Seattle, WA (SEA)

Elev: 400 ft    Lat: 47o 28'N    Long: 122o 19'W

Seattle English Units

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

 

 


Temperature Data (oF) :

Month

Daily Max

Daily Min

Mean

Maximum Daily Temperature

Minimum Daily Temperature

January

45.8

35.9

40.9

64

0

February

49.5

37.2

43.3

70

1

March

53.2

39.1

46.2

75

11

April

58.2

42.1

50.2

85

29

May

64.4

47.2

55.8

93

28

June

69.6

51.7

60.7

96

38

July

75.3

55.3

65.3

100

43

August

75.6

55.7

65.6

99

44

September

70.2

51.9

61.1

98

35

October

59.7

45.7

52.7

89

28

November

50.5

39.9

45.2

74

6

December

45.5

35.9

40.7

64

6

Annual

59.8

44.8

52.3

100

0

 

Precipitation Data (in):

Month

Mean

Median

Extreme

Year

Snow*

January

5.13

4.90

9.41

1990

2.4

February

4.18

4.39

8.35

1996

1.3

March

3.75

3.70

8.15

1997

0.6

April

2.59

2.39

6.53

1991

0.1

May

1.78

1.66

3.70

1977

0.0

June

1.49

1.38

3.05

1990

0.0

July

0.79

0.66

2.39

1983

0.0

August

1.02

0.65

4.59

1975

0.0

September

1.63

1.46

5.95

1978

0.0

October

3.19

2.99

7.75

1975

0.1

November

5.90

5.32

11.62

1998

1.1

December

5.62

5.31

11.85

1979

2.5

Annual

37.07

35.51

 

 

8.1

* Snowfall totals represent mean snowfall 1971-2000


 
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