As of 15:13 PST

Weather in SeaTac, WA

56°

SeaTac, Wednesday, 4 November, 15:13

Overcast. Feels like 54°. High 56°, low 38°.

Pressure30.00 inHg

Wind6.9 mph S

Humidity74%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Monthly outlook for SeaTac, WA: average high 55.1°, average low 44.6°. That is 2.8° above the climate normal for November. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 10 days and 4.0 inches. The warmest day looks like 7 November (62.9°), the coolest 4 November (38°).

55.1°/44.6°

Average high / low

+2.8°

Above normal

7 / 10

Wet days / normal

1.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
4 November – 13 November	55.9°	51.1°	+2.7°
14 November – 23 November	53.8°	47.7°	+3.4°
24 November – 3 December	at normal	45.3°	—

November records over 66 years

65.8°2 November 1962All-time high

0.5°23 November 1985All-time low

Climate normals and records are computed from the nearest reference point — Riverton (4 mi).

Thu, 0556° / 45°

0.01

56 °

SeaTac, Thursday, 5 November

Light rain. High 56°, low 45°.

Pressure30.21 inHg

Wind7.6 mph S

Humidity73%

Visibility6.2 mi

Dew point47°

Fri, 0652° / 45°

0.54

52 °

SeaTac, Friday, 6 November

Rain. High 52°, low 45°.

Pressure30.09 inHg

Wind8.3 mph S

Humidity90%

Visibility6.2 mi

Dew point47°

Sat, 0763° / 45°

0.14

63 °

SeaTac, Saturday, 7 November

Rain. High 63°, low 45°.

Pressure29.91 inHg

Wind3.8 mph SW

Humidity72%

Visibility6.2 mi

Dew point53°

Sun, 0854° / 45°

0.4

54 °

SeaTac, Sunday, 8 November

Rain. High 54°, low 45°.

Pressure30.15 inHg

Wind10.5 mph SW

Humidity77%

Visibility4.5 mi

Dew point47°

Mon, 0952° / 40°

0.15

52 °

SeaTac, Monday, 9 November

Rain. High 52°, low 40°.

Pressure30.06 inHg

Wind9.8 mph SE

Humidity79%

Visibility—

Dew point38°

Tue, 1057° / 46°

0.06

57 °

SeaTac, Tuesday, 10 November

Light rain. High 57°, low 46°.

Pressure30.06 inHg

Wind7.6 mph S

Humidity49%

Visibility—

Dew point32°

Wed, 1157° / 44°

57 °

SeaTac, Wednesday, 11 November

Overcast. High 57°, low 44°.

Pressure30.00 inHg

Wind3.2 mph E

Humidity46%

Visibility—

Dew point30°

Thu, 1260° / 48°

0.01

60 °

SeaTac, Thursday, 12 November

Light rain. High 60°, low 48°.

Pressure29.94 inHg

Wind4.3 mph S

Humidity50%

Visibility—

Dew point34°

Fri, 1352° / 49°

0.1

52 °

SeaTac, Friday, 13 November

Light rain. High 52°, low 49°.

Pressure29.77 inHg

Wind3.9 mph W

Humidity76%

Visibility—

Dew point43°

Sat, 1452° / 49°

0.02

52 °

SeaTac, Saturday, 14 November

Light rain. High 52°, low 49°.

Pressure29.71 inHg

Wind3.4 mph N

Humidity71%

Visibility—

Dew point42°

Sun, 1557° / 48°

57 °

SeaTac, Sunday, 15 November

Overcast. High 57°, low 48°.

Pressure29.88 inHg

Wind4.6 mph SW

Humidity67%

Visibility—

Dew point43°

Mon, 1656° / 46°

56 °

SeaTac, Monday, 16 November

Overcast. High 56°, low 46°.

Pressure30.06 inHg

Wind5.3 mph S

Humidity66%

Visibility—

Dew point39°

Tue, 1754° / 43°

54 °

SeaTac, Tuesday, 17 November

Mostly clear. High 54°, low 43°.

Pressure30.12 inHg

Wind4.8 mph N

Humidity69%

Visibility—

Dew point39°

Wed, 1852° / 41°

52 °

SeaTac, Wednesday, 18 November

Clear. High 52°, low 41°.

Pressure30.36 inHg

Wind3.1 mph N

Humidity78%

Visibility—

Dew point40°

Thu, 1951° / 41°

51 °

SeaTac, Thursday, 19 November

Overcast. High 51°, low 41°.

Pressure30.39 inHg

Wind4.4 mph N

Humidity74%

Visibility—

Dew point38°

From day 17 onward the outlook is built from 60-year climate statistics

Fri, 2048° / 38°

0.23

48 °

SeaTac, Friday, 20 November

Climate normal for this date — 60-year average.

Average high48°

Average low38°

Average precipitation0.23 in

Chance of precipitation58%

Record high60° (2002)

Record low22° (1985)

Sat, 2146° / 37°

0.24

46 °

SeaTac, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high46°

Average low37°

Average precipitation0.24 in

Chance of precipitation50%

Record high58° (2002)

Record low19° (1977)

Sun, 2246° / 36°

0.24

46 °

SeaTac, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high46°

Average low36°

Average precipitation0.24 in

Chance of precipitation65%

Record high64° (2017)

Record low10° (1985)

Mon, 2346° / 37°

0.33

46 °

SeaTac, Monday, 23 November

Climate normal for this date — 60-year average.

Average high46°

Average low37°

Average precipitation0.33 in

Chance of precipitation70%

Record high61° (2017)

Record low1° (1985)

Tue, 2446° / 37°

0.32

46 °

SeaTac, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high46°

Average low37°

Average precipitation0.32 in

Chance of precipitation63%

Record high57° (1995)

Record low5° (1985)

Wed, 2546° / 37°

0.35

46 °

SeaTac, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high46°

Average low37°

Average precipitation0.35 in

Chance of precipitation63%

Record high55° (1977)

Record low11° (1985)

Thu, 2646° / 37°

0.22

46 °

SeaTac, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high46°

Average low37°

Average precipitation0.22 in

Chance of precipitation57%

Record high57° (2014)

Record low20° (1985)

Fri, 2746° / 37°

0.28

46 °

SeaTac, Friday, 27 November

Climate normal for this date — 60-year average.

Average high46°

Average low37°

Average precipitation0.28 in

Chance of precipitation67%

Record high55° (2014)

Record low21° (1985)

Sat, 2845° / 36°

0.2

45 °

SeaTac, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high45°

Average low36°

Average precipitation0.2 in

Chance of precipitation58%

Record high57° (2021)

Record low17° (1985)

Sun, 2945° / 35°

0.21

45 °

SeaTac, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high45°

Average low35°

Average precipitation0.21 in

Chance of precipitation52%

Record high56° (2021)

Record low8° (1985)

Mon, 3045° / 36°

0.24

45 °

SeaTac, Monday, 30 November

Climate normal for this date — 60-year average.

Average high45°

Average low36°

Average precipitation0.24 in

Chance of precipitation63%

Record high56° (2008)

Record low9° (1985)

Tue, 0145° / 37°

0.25

45 °

SeaTac, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high45°

Average low37°

Average precipitation0.25 in

Chance of precipitation62%

Record high55° (2021)

Record low6° (1985)

Wed, 0245° / 36°

0.31

45 °

SeaTac, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high45°

Average low36°

Average precipitation0.31 in

Chance of precipitation68%

Record high54° (2021)

Record low20° (1985)

Thu, 0345° / 36°

0.31

45 °

SeaTac, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high45°

Average low36°

Average precipitation0.31 in

Chance of precipitation57%

Record high56° (1965)

Record low26° (1984)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for SeaTac, WA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in SeaTac, WA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.