As of 19:58 PST

Weather in SeaTac, WA

54°

SeaTac, Tuesday, 10 November, 19:58

Rain. Feels like 54°. High 54°, low 49°.

Pressure30.00 inHg

Wind6 mph E

Humidity93%

Visibility6.2 mi

Dew point52°

See detailed hourly forecast

Monthly outlook for SeaTac, WA: average high 53.8°, average low 45.6°. That is 3.1° above the climate normal for November. Precipitation is expected on 10 days (about 3.1 inches), against a normal of 10 days and 4.2 inches. The warmest day looks like 11 November (67.2°), the coolest 20 November (37.3°).

53.8°/45.6°

Average high / low

+3.1°

Above normal

10 / 10

Wet days / normal

3.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 November – 19 November	55.6°	49.3°	+3.5°
20 November – 29 November	50.8°	45.9°	+2.7°
30 November – 9 December	at normal	44.2°	—

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).

Wed, 1167° / 53°

67 °

SeaTac, Wednesday, 11 November

Overcast. High 67°, low 53°.

Pressure29.94 inHg

Wind6.1 mph S

Humidity56%

Visibility6.2 mi

Dew point48°

Thu, 1259° / 53°

59 °

SeaTac, Thursday, 12 November

Overcast. High 59°, low 53°.

Pressure29.74 inHg

Wind0.7 mph S

Humidity81%

Visibility6.2 mi

Dew point51°

Fri, 1362° / 48°

0.07

62 °

SeaTac, Friday, 13 November

Light rain. High 62°, low 48°.

Pressure29.32 inHg

Wind7.4 mph SW

Humidity74%

Visibility6.2 mi

Dew point46°

Sat, 1457° / 49°

0.07

57 °

SeaTac, Saturday, 14 November

Light rain. High 57°, low 49°.

Pressure29.71 inHg

Wind11.3 mph S

Humidity62%

Visibility6.2 mi

Dew point44°

Sun, 1552° / 48°

0.53

52 °

SeaTac, Sunday, 15 November

Light rain. High 52°, low 48°.

Pressure29.74 inHg

Wind12 mph SE

Humidity90%

Visibility—

Dew point47°

Mon, 1654° / 45°

0.09

54 °

SeaTac, Monday, 16 November

Light rain. High 54°, low 45°.

Pressure29.97 inHg

Wind11 mph SW

Humidity87%

Visibility—

Dew point44°

Tue, 1755° / 47°

0.32

55 °

SeaTac, Tuesday, 17 November

Rain. High 55°, low 47°.

Pressure29.91 inHg

Wind7.8 mph S

Humidity72%

Visibility—

Dew point42°

Wed, 1847° / 42°

0.38

47 °

SeaTac, Wednesday, 18 November

Rain. High 47°, low 42°.

Pressure29.80 inHg

Wind11.2 mph S

Humidity80%

Visibility—

Dew point41°

Thu, 1949° / 39°

49 °

SeaTac, Thursday, 19 November

Partly cloudy. High 49°, low 39°.

Pressure30.15 inHg

Wind4.1 mph N

Humidity72%

Visibility—

Dew point35°

Fri, 2048° / 37°

48 °

SeaTac, Friday, 20 November

Overcast. High 48°, low 37°.

Pressure30.39 inHg

Wind4.6 mph N

Humidity61%

Visibility—

Dew point30°

Sat, 2153° / 42°

53 °

SeaTac, Saturday, 21 November

Overcast. High 53°, low 42°.

Pressure30.45 inHg

Wind4.7 mph N

Humidity58%

Visibility—

Dew point32°

Sun, 2253° / 40°

53 °

SeaTac, Sunday, 22 November

Overcast. High 53°, low 40°.

Pressure30.24 inHg

Wind2.6 mph E

Humidity51%

Visibility—

Dew point28°

Mon, 2348° / 44°

0.17

48 °

SeaTac, Monday, 23 November

Light rain. High 48°, low 44°.

Pressure30.09 inHg

Wind2.1 mph S

Humidity56%

Visibility—

Dew point32°

Tue, 2450° / 46°

0.43

50 °

SeaTac, Tuesday, 24 November

Light rain. High 50°, low 46°.

Pressure29.88 inHg

Wind5.1 mph SE

Humidity88%

Visibility—

Dew point43°

Wed, 2553° / 49°

0.21

53 °

SeaTac, Wednesday, 25 November

Rain. High 53°, low 49°.

Pressure30.09 inHg

Wind6.2 mph S

Humidity91%

Visibility—

Dew point48°

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

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)

Fri, 0444° / 35°

0.27

44 °

SeaTac, Friday, 4 December

Climate normal for this date — 60-year average.

Average high44°

Average low35°

Average precipitation0.27 in

Chance of precipitation55%

Record high57° (2023)

Record low17° (1970)

Sat, 0543° / 35°

0.19

43 °

SeaTac, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high43°

Average low35°

Average precipitation0.19 in

Chance of precipitation47%

Record high59° (2023)

Record low23° (1994)

Sun, 0644° / 35°

0.19

44 °

SeaTac, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high44°

Average low35°

Average precipitation0.19 in

Chance of precipitation53%

Record high55° (2019)

Record low24° (1972)

Mon, 0743° / 35°

0.19

43 °

SeaTac, Monday, 7 December

Climate normal for this date — 60-year average.

Average high43°

Average low35°

Average precipitation0.19 in

Chance of precipitation55%

Record high55° (2025)

Record low17° (1972)

Tue, 0844° / 35°

0.23

44 °

SeaTac, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high44°

Average low35°

Average precipitation0.23 in

Chance of precipitation53%

Record high56° (2025)

Record low14° (1972)

Wed, 0944° / 35°

0.26

44 °

SeaTac, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high44°

Average low35°

Average precipitation0.26 in

Chance of precipitation65%

Record high55° (2025)

Record low22° (1972)

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.