Seatac, Washington Weather Forecast

Local

Seatac, WA, US

47.44846, -122.29217

Normals for December

	Temp ( °F °C )			Precip ( " mm )		Degree Days
	Min	Max	Avg	MTD	YTD	Heating	Cooling
1	38 3	49 9	44 6	0.19 undefined	33.81 undefined	21.5	0
2	38 3	49 9	43 6	0.38 undefined	34 undefined	21.7	0
3	38 3	48 9	43 6	0.57 undefined	34.19 undefined	21.9	0
4	38 3	48 9	43 6	0.76 undefined	34.38 undefined	22	0
5	38 3	48 9	43 6	0.95 undefined	34.57 undefined	22.2	0
6	38 3	48 9	43 6	1.14 undefined	34.76 undefined	22.3	0
7	37 3	48 9	43 6	1.33 undefined	34.95 undefined	22.5	0
8	37 3	48 9	42 6	1.52 undefined	35.14 undefined	22.6	0
9	37 3	47 9	42 6	1.7 undefined	35.32 undefined	22.7	0
10	37 3	47 8	42 6	1.89 undefined	35.51 undefined	22.8	0
11	37 3	47 8	42 6	2.07 undefined	35.69 undefined	22.9	0
12	37 3	47 8	42 6	2.25 undefined	35.87 undefined	23	0
13	37 3	47 8	42 6	2.43 undefined	36.05 undefined	23.1	0
14	37 3	47 8	42 5	2.61 undefined	36.23 undefined	23.2	0
15	37 3	47 8	42 5	2.79 undefined	36.41 undefined	23.2	0
16	37 3	47 8	42 5	2.97 undefined	36.59 undefined	23.3	0
17	37 3	47 8	42 5	3.14 undefined	36.76 undefined	23.4	0
18	37 3	47 8	42 5	3.32 undefined	36.94 undefined	23.4	0
19	37 3	46 8	42 5	3.5 undefined	37.12 undefined	23.4	0
20	37 3	46 8	42 5	3.68 undefined	37.3 undefined	23.4	0
21	37 3	46 8	42 5	3.87 undefined	37.49 undefined	23.5	0
22	37 3	46 8	42 5	4.06 undefined	37.68 undefined	23.5	0
23	37 3	46 8	42 5	4.24 undefined	37.86 undefined	23.5	0
24	37 3	46 8	42 5	4.43 undefined	38.05 undefined	23.4	0
25	37 3	46 8	42 5	4.62 undefined	38.24 undefined	23.4	0
26	37 3	46 8	42 5	4.81 undefined	38.43 undefined	23.4	0
27	37 3	46 8	42 5	5 undefined	38.62 undefined	23.4	0
28	37 3	47 8	42 5	5.18 undefined	38.8 undefined	23.3	0
29	37 3	47 8	42 5	5.36 undefined	38.98 undefined	23.3	0
30	37 3	47 8	42 5	5.54 undefined	39.16 undefined	23.2	0
31	37 3	47 8	42 6	5.72 undefined	39.34 undefined	23.1	0