Seattle Weather in 2018

Historical record of Seattle, Washington weather for the year 2018 based on NOAA data.
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Year:
2018 Seattle Weather Extremes
Highest temperature 94 °F August 8
Lowest temperature 24 °F February 23
Highest daily low 65 °F August 21
Lowest daily high 34 °F February 21
Most daily precipitation 1.8 inches November 27
Most daily snow 1.0 inches February 21
Total annual precipitation 35.7 inches -
Total annual snow 1.0 inches -
Highest Temperatures in Seattle in 2018
Rank Temperature Date
1 94 °F Aug 8
1 94 °F Jul 29
3 93 °F Aug 9
3 93 °F Jul 15
5 92 °F Aug 7
5 92 °F Jul 26
5 92 °F Jul 25
5 92 °F Jul 16
9 91 °F Aug 21
9 91 °F Jul 24
Lowest Temperatures in Seattle in 2018
Rank Temperature Date
1 24 °F February 23
2 26 °F February 22
2 26 °F February 21
4 27 °F February 20
5 28 °F February 19
6 29 °F February 13
7 30 °F February 18
8 31 °F December 5
8 31 °F January 1
10 32 °F December 4
10 32 °F February 26
10 32 °F February 12
January 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
44 31 0.00 0.0
44 34 0.00 0.0
49 33 0.00 0.0
47 35 0.13 0.0
51 45 0.51 0.0
48 42 0.17 0.0
45 41 0.33 0.0
49 43 0.16 0.0
50 43 0.18 0.0
45 41 0.17 0.0
50 42 1.12 0.0
51 48 0.10 0.0
58 45 0.01 0.0
56 40 0.00 0.0
64 41 0.06 0.0
56 44 0.19 0.0
56 45 0.43 0.0
52 39 0.40 0.0
46 38 0.03 0.0
49 39 0.08 0.0
51 39 0.11 0.0
47 40 0.36 0.0
48 40 0.88 0.0
49 41 0.44 0.0
44 37 0.15 0.0
42 38 0.41 0.0
48 41 0.55 0.0
57 43 0.06 0.0
52 43 1.09 0.0
47 39 0.00 0.0
45 39 0.00 0.0
February 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
46 43 0.57 0.0
53 45 0.08 0.0
51 48 0.14 0.0
55 49 0.01 0.0
50 46 0.03 0.0
48 44 0.05 0.0
54 47 0.00 0.0
53 42 0.05 0.0
49 39 0.00 0.0
46 33 0.00 0.0
46 33 0.00 0.0
47 32 0.00 0.0
48 29 0.14 0.0
44 37 0.10 0.0
45 36 0.01 0.0
47 40 0.11 0.0
49 39 0.30 0.0
39 30 0.06 0.0
37 28 0.00 0.0
36 27 0.00 0.0
34 26 0.06 1.0
38 26 0.00 0.0
40 24 0.03 0.0
45 36 0.06 0.0
43 35 0.20 0.0
45 32 0.00 0.0
47 37 0.01 0.0
47 39 0.15 0.0
March 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
51 37 0.03 0.0
45 37 0.18 0.0
52 34 0.00 0.0
48 33 0.13 0.0
47 39 0.00 0.0
53 37 0.00 0.0
50 35 0.04 0.0
52 39 0.35 0.0
52 40 0.00 0.0
59 34 0.00 0.0
64 39 0.00 0.0
73 42 0.00 0.0
64 44 0.27 0.0
53 40 0.03 0.0
56 35 0.00 0.0
58 39 0.00 0.0
54 38 0.00 0.0
55 39 0.00 0.0
55 37 0.00 0.0
56 36 0.00 0.0
58 36 0.10 0.0
49 39 0.46 0.0
49 34 0.35 0.0
47 34 0.23 0.0
52 37 0.04 0.0
46 40 0.15 0.0
52 45 0.08 0.0
54 44 0.00 0.0
55 43 0.00 0.0
57 46 0.00 0.0
59 45 0.00 0.0
April 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
50 38 0.00 0.0
53 36 0.00 0.0
50 39 0.00 0.0
50 41 0.29 0.0
56 46 0.21 0.0
65 49 0.05 0.0
62 46 0.82 0.0
51 46 0.39 0.0
62 44 0.00 0.0
60 46 0.18 0.0
54 42 0.21 0.0
51 41 0.11 0.0
53 43 0.66 0.0
53 45 1.70 0.0
51 43 0.12 0.0
47 41 0.59 0.0
53 42 0.01 0.0
60 41 0.00 0.0
62 41 0.00 0.0
63 43 0.00 0.0
56 45 0.03 0.0
59 44 0.00 0.0
69 41 0.00 0.0
77 49 0.00 0.0
75 51 0.00 0.0
82 51 0.00 0.0
58 49 0.01 0.0
55 47 0.31 0.0
61 46 0.00 0.0
59 47 0.00 0.0
May 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
62 48 0.00 0.0
70 45 0.00 0.0
74 50 0.00 0.0
64 50 0.00 0.0
68 48 0.01 0.0
77 52 0.00 0.0
69 53 0.00 0.0
75 50 0.03 0.0
67 52 0.00 0.0
62 50 0.04 0.0
67 50 0.00 0.0
77 49 0.00 0.0
85 52 0.00 0.0
88 58 0.00 0.0
69 54 0.00 0.0
68 53 0.00 0.0
67 53 0.00 0.0
66 53 0.00 0.0
72 53 0.04 0.0
68 55 0.00 0.0
72 54 0.00 0.0
79 51 0.00 0.0
80 55 0.00 0.0
70 54 0.00 0.0
68 52 0.00 0.0
68 52 0.00 0.0
75 51 0.00 0.0
70 52 0.00 0.0
65 50 0.00 0.0
67 48 0.00 0.0
67 49 0.00 0.0
June 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
68 48 0.00 0.0
77 54 0.00 0.0
63 53 0.01 0.0
69 49 0.00 0.0
69 49 0.00 0.0
75 51 0.00 0.0
68 55 0.00 0.0
64 52 0.25 0.0
63 49 0.09 0.0
62 48 0.06 0.0
68 48 0.00 0.0
69 48 0.00 0.0
67 53 0.02 0.0
68 53 0.00 0.0
73 53 0.00 0.0
78 54 0.00 0.0
88 58 0.00 0.0
87 60 0.00 0.0
85 57 0.00 0.0
88 59 0.00 0.0
69 58 0.00 0.0
69 57 0.00 0.0
72 56 0.07 0.0
79 54 0.13 0.0
71 55 0.00 0.0
73 53 0.00 0.0
67 54 0.00 0.0
69 53 0.00 0.0
72 55 0.00 0.0
66 56 0.00 0.0
July 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
71 56 0.04 0.0
70 53 0.00 0.0
76 50 0.00 0.0
83 57 0.00 0.0
85 59 0.00 0.0
78 60 0.00 0.0
74 58 0.01 0.0
81 58 0.00 0.0
72 57 0.00 0.0
78 58 0.00 0.0
82 59 0.00 0.0
89 59 0.00 0.0
85 61 0.00 0.0
87 58 0.00 0.0
93 63 0.00 0.0
92 63 0.00 0.0
85 60 0.00 0.0
77 58 0.00 0.0
70 54 0.00 0.0
74 55 0.00 0.0
79 56 0.00 0.0
86 61 0.00 0.0
90 63 0.00 0.0
91 59 0.00 0.0
92 62 0.00 0.0
92 60 0.00 0.0
88 57 0.00 0.0
85 58 0.00 0.0
94 60 0.00 0.0
89 62 0.00 0.0
80 60 0.00 0.0
August 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
75 59 0.00 0.0
70 58 0.02 0.0
76 59 0.01 0.0
81 58 0.00 0.0
86 59 0.00 0.0
89 59 0.00 0.0
92 60 0.00 0.0
94 62 0.00 0.0
93 60 0.00 0.0
82 62 0.00 0.0
72 62 0.05 0.0
73 59 0.00 0.0
79 59 0.00 0.0
85 62 0.00 0.0
86 61 0.00 0.0
73 58 0.00 0.0
74 54 0.00 0.0
81 55 0.00 0.0
80 58 0.00 0.0
81 57 0.00 0.0
91 65 0.00 0.0
89 59 0.00 0.0
73 57 0.01 0.0
69 56 0.00 0.0
64 53 0.00 0.0
65 57 0.11 0.0
76 56 0.00 0.0
84 55 0.00 0.0
77 57 0.00 0.0
73 60 0.00 0.0
69 58 0.00 0.0
September 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
73 57 0.00 0.0
76 52 0.00 0.0
74 58 0.00 0.0
77 55 0.00 0.0
82 57 0.00 0.0
85 56 0.00 0.0
75 56 0.05 0.0
71 58 0.04 0.0
75 57 0.13 0.0
68 58 0.00 0.0
67 56 0.00 0.0
67 55 0.01 0.0
70 55 0.00 0.0
67 55 0.42 0.0
63 53 0.01 0.0
65 51 0.17 0.0
65 51 0.00 0.0
67 48 0.00 0.0
68 48 0.03 0.0
66 53 0.05 0.0
72 59 0.02 0.0
68 55 0.05 0.0
65 53 0.00 0.0
68 49 0.00 0.0
69 50 0.00 0.0
70 51 0.00 0.0
73 52 0.00 0.0
79 57 0.00 0.0
66 52 0.03 0.0
65 56 0.03 0.0
October 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
65 57 0.30 0.0
62 48 0.01 0.0
58 43 0.00 0.0
60 47 0.00 0.0
53 46 0.56 0.0
60 48 0.00 0.0
56 47 0.03 0.0
58 52 0.10 0.0
59 51 0.09 0.0
64 49 0.00 0.0
63 45 0.00 0.0
64 47 0.00 0.0
62 49 0.00 0.0
68 45 0.00 0.0
66 44 0.00 0.0
72 46 0.00 0.0
70 44 0.00 0.0
67 46 0.00 0.0
61 45 0.00 0.0
58 45 0.00 0.0
56 43 0.00 0.0
53 43 0.00 0.0
54 43 0.06 0.0
60 49 0.00 0.0
58 53 0.66 0.0
63 51 0.45 0.0
60 45 0.84 0.0
57 49 0.61 0.0
55 44 0.02 0.0
56 45 0.03 0.0
58 49 0.02 0.0
November 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
62 57 0.04 0.0
62 54 0.30 0.0
55 53 0.18 0.0
61 52 0.03 0.0
56 48 0.00 0.0
56 46 0.05 0.0
53 40 0.04 0.0
50 36 0.00 0.0
43 35 0.07 0.0
50 40 0.00 0.0
50 34 0.00 0.0
61 41 0.00 0.0
54 39 0.00 0.0
57 46 0.11 0.0
55 49 0.02 0.0
55 46 0.03 0.0
55 41 0.00 0.0
55 38 0.00 0.0
54 34 0.00 0.0
55 34 0.00 0.0
53 47 0.11 0.0
52 45 0.48 0.0
49 42 0.34 0.0
49 38 0.00 0.0
48 36 0.01 0.0
57 45 1.42 0.0
58 48 1.84 0.0
51 47 0.16 0.0
50 43 0.00 0.0
50 43 0.19 0.0
December 2018 Seattle Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
46 39 0.07 0.0
46 40 0.06 0.0
47 35 0.00 0.0
47 32 0.00 0.0
45 31 0.00 0.0
46 33 0.00 0.0
44 34 0.00 0.0
48 40 0.00 0.0
48 42 0.59 0.0
49 42 0.09 0.0
50 43 0.73 0.0
49 39 0.07 0.0
52 45 0.29 0.0
57 43 0.01 0.0
52 41 0.06 0.0
56 45 0.33 0.0
54 46 0.45 0.0
54 45 0.70 0.0
51 45 0.11 0.0
59 40 0.27 0.0
44 35 0.00 0.0
48 37 0.30 0.0
47 42 0.72 0.0
51 40 0.00 0.0
45 36 0.02 0.0
43 39 0.14 0.0
47 39 0.01 0.0
49 39 0.43 0.0
51 43 0.63 0.0
49 38 0.00 0.0
43 34 0.00 0.0
Weather Station Details
Years Station Coordinates
1948–2024 Seattle Tacoma International Airport location
1894–1947 University of Washington location