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SeaTac Weather in January, USA

Slide and Tap Other Months

  • What is Average Temperature?
    The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

    Temperature

    5°C
    41°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    High Temperature

    7°C
    45°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    Low Temperature

    3°C
    37°F
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall Days

    22 days
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall

    120 mm

January, 2026

Sun
Mon
Tue
Wed
Thu
1 Avg 36º
Fri
2 Avg 37º
Sat
3 Avg 37º
4 Avg 39º
5 Avg 41º
6 Avg 41º
7 Avg 41º
8 Avg 43º
9 Avg 43º
10 Avg 43º
11 Avg 41º
12 Avg 41º
13 Avg 41º
14 Avg 41º
15 Avg 43º
16 Avg 43º
17 Avg 43º
18 Avg 45º
19 Avg 41º
20 Avg 43º
21 Avg 41º
22 Avg 43º
23 Avg 43º
24 Avg 43º
25 Avg 45º
26 Avg 45º
27 Avg 45º
28 Avg 46º
29
30
31
  • 8

    46

    Hour 2

    2:00

  • 8

    46

    Hour 3

    3:00

  • 8

    46

    Hour 4

    4:00

  • 8

    46

    Hour 5

    5:00

  • 8

    46

    Hour 6

    6:00

  • 8

    46

    Hour 7

    7:00

  • Sunset

    07:40

  • 9

    48

    Hour 8

    8:00

  • 9

    48

    Hour 9

    9:00

  • 9

    48

    Hour 10

    10:00

  • 10

    50

    Hour 11

    11:00

  • 9

    48

    Hour 12

    12:00

  • 9

    48

    Hour 13

    13:00

  • 9

    48

    Hour 14

    14:00

  • 10

    50

    Hour 15

    15:00

  • 10

    50

    Hour 16

    16:00

  • 9

    48

    Hour 17

    17:00

  • Sunset

    17:05

  • 9

    48

    Hour 18

    18:00

  • 9

    48

    Hour 19

    19:00

  • 9

    48

    Hour 20

    20:00

  • 9

    48

    Hour 21

    21:00

  • 8

    46

    Hour 22

    22:00

  • 9

    48

    Hour 23

    23:00

  • Friday
  • 8

    46

    0:00

  • 8

    46

    1:00

    • 02:00

      Moderate rain at times

      46º

    • 03:00

      Moderate rain at times

      46º

    • 04:00

      Overcast

      46º

    • 05:00

      Moderate rain

      46º

    • 06:00

      Overcast

      46º

    • 07:00

      Overcast

      46º

    • 07 40

      SUNRISE https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunrise.png
    • 08:00

      Light rain

      48º

    • 09:00

      Overcast

      48º

    • 10:00

      Overcast

      48º

    • 11:00

      Overcast

      10º

      50º

    • 12:00

      Overcast

      48º

    • 13:00

      Overcast

      48º

    • 14:00

      Overcast

      48º

    • 15:00

      Overcast

      10º

      50º

    • 16:00

      Overcast

      10º

      50º

    • 17:00

      Overcast

      48º

    • 17 05

      SUNSET https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunset.png
    • 18:00

      Moderate rain at times

      48º

    • 19:00

      Moderate rain at times

      48º

    • 20:00

      Light rain

      48º

    • 21:00

      Light rain

      48º

    • 22:00

      Light rain

      46º

    • 23:00

      Light drizzle

      48º

    • 00:00

      Fri

      Light drizzle

      48º

    • 01:00

      Light drizzle

      48º

  • 9

    48

    Hour 2

    2:00

  • 9

    48

    Hour 3

    3:00

  • 9

    48

    Hour 4

    4:00

  • 9

    48

    Hour 5

    5:00

  • 10

    50

    Hour 6

    6:00

  • 10

    50

    Hour 7

    7:00

  • Sunset

    07:39

  • 10

    50

    Hour 8

    8:00

  • 9

    48

    Hour 9

    9:00

  • 9

    48

    Hour 10

    10:00

  • 9

    48

    Hour 11

    11:00

  • 8

    46

    Hour 12

    12:00

  • 8

    46

    Hour 13

    13:00

  • 8

    46

    Hour 14

    14:00

  • 8

    46

    Hour 15

    15:00

  • 8

    46

    Hour 16

    16:00

  • 8

    46

    Hour 17

    17:00

  • Sunset

    17:07

  • 8

    46

    Hour 18

    18:00

  • 9

    48

    Hour 19

    19:00

  • 9

    48

    Hour 20

    20:00

  • 9

    48

    Hour 21

    21:00

  • 9

    48

    Hour 22

    22:00

  • 9

    48

    Hour 23

    23:00

  • Saturday
  • 9

    48

    0:00

  • 9

    48

    1:00

    • 06:00

      Overcast

      10º

      50º

    • 07:00

      Overcast

      10º

      50º

    • 07 39

      SUNRISE https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunrise.png
    • 08:00

      Overcast

      10º

      50º

    • 09:00

      Overcast

      48º

    • 10:00

      Overcast

      48º

    • 11:00

      Overcast

      48º

    • 12:00

      Moderate or heavy rain shower

      46º

    • 13:00

      Moderate or heavy rain shower

      46º

    • 14:00

      Moderate rain

      46º

    • 15:00

      Moderate rain

      46º

    • 16:00

      Moderate rain

      46º

    • 17:00

      Moderate or heavy rain with thunder

      46º

    • 17 07

      SUNSET https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunset.png
    • 18:00

      Moderate or heavy rain with thunder

      46º

    • 19:00

      Moderate or heavy rain with thunder

      48º

    • 20:00

      Overcast

      48º

    • 21:00

      Overcast

      48º

    • 22:00

      Overcast

      48º

    • 23:00

      Overcast

      48º

    • 00:00

      Sat

      Overcast

      48º

    • 01:00

      Overcast

      48º

    • 02:00

      Overcast

      48º

    • 03:00

      Overcast

      48º

    • 04:00

      Overcast

      48º

    • 05:00

      Overcast

      48º

  • 9

    48

    Hour 2

    2:00

  • 9

    48

    Hour 3

    3:00

  • 9

    48

    Hour 4

    4:00

  • 9

    48

    Hour 5

    5:00

  • 9

    48

    Hour 6

    6:00

  • 9

    48

    Hour 7

    7:00

  • Sunset

    07:38

  • 9

    48

    Hour 8

    8:00

  • 9

    48

    Hour 9

    9:00

  • 10

    50

    Hour 10

    10:00

  • 11

    52

    Hour 11

    11:00

  • 12

    54

    Hour 12

    12:00

  • 13

    55

    Hour 13

    13:00

  • 14

    57

    Hour 14

    14:00

  • 14

    57

    Hour 15

    15:00

  • 14

    57

    Hour 16

    16:00

  • 12

    54

    Hour 17

    17:00

  • Sunset

    17:08

  • 10

    50

    Hour 18

    18:00

  • 9

    48

    Hour 19

    19:00

  • 8

    46

    Hour 20

    20:00

  • 8

    46

    Hour 21

    21:00

  • 8

    46

    Hour 22

    22:00

  • 8

    46

    Hour 23

    23:00

  • Sunday
  • 9

    48

    0:00

  • 9

    48

    1:00

    • 06:00

      Overcast

      48º

    • 07:00

      Overcast

      48º

    • 07 38

      SUNRISE https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunrise.png
    • 08:00

      Overcast

      48º

    • 09:00

      Overcast

      48º

    • 10:00

      Overcast

      10º

      50º

    • 11:00

      Partly cloudy

      11º

      52º

    • 12:00

      Partly cloudy

      12º

      54º

    • 13:00

      Partly cloudy

      13º

      55º

    • 14:00

      Partly cloudy

      14º

      57º

    • 15:00

      Partly cloudy

      14º

      57º

    • 16:00

      Partly cloudy

      14º

      57º

    • 17:00

      Overcast

      12º

      54º

    • 17 08

      SUNSET https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunset.png
    • 18:00

      Overcast

      10º

      50º

    • 19:00

      Cloudy

      48º

    • 20:00

      Overcast

      46º

    • 21:00

      Overcast

      46º

    • 22:00

      Overcast

      46º

    • 23:00

      Mist

      46º

    • 00:00

      Sun

      Mist

      46º

    • 01:00

      Mist

      45º

    • 02:00

      Mist

      45º

    • 03:00

      Mist

      45º

    • 04:00

      Mist

      45º

    • 05:00

      Mist

      45º

Forecast
Avg Historical Daily Average
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