Seattle-Tacoma Intl
Weather station · 47.4°N 122.3°W · 115 m above sea level
ICAO KSEAWMO 72793Station data since 1948
Record high
28.3°C
in 1957
Record low
4.4°C
in 1948
Average high
19.9°C
all years on record
9.4°C short of the record for 23 September
Today’s high 18.9°C against 28.3°C in 1957. A reading that beats it is flagged here automatically, once a second cycle confirms it.
All-time record high
42.2°C
- Date
- Monday, 28 June 2021
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Seattle-Tacoma Intl, United States
- Position
- 47.44°N 122.31°W · 115 m
Highest highest in available records since 1948. Source: NOAA GHCN-Daily.
All-time record low
−17.8°C
- Date
- Tuesday, 31 January 1950
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Seattle-Tacoma Intl, United States
- Position
- 47.44°N 122.31°W · 115 m
Highest and lowest lowest in available records since 1948. Source: NOAA GHCN-Daily.
Where Seattle-Tacoma Intl is
47.44°N 122.31°W
Every year on record
1948 to 2026
Annual average · °C
Trend over 78 years with data: +0.23 °C per decade
Source: NOAA GHCN-Daily. Years the station did not cover are left as gaps, never joined across. The dashed line is a least squares trend through the years that have data.
Records by month
Jan
17.8°
−17.8°
Feb
21.1°
−17.2°
Mar
26.1°
−11.7°
Apr
31.7°
−1.7°
May
33.9°
−2.2°
Jun
42.2°
3.3°
Jul
39.4°
6.1°
Aug
37.2°
6.7°
Sep
36.7°
Recent days
| Day | High | At | Low | At |
|---|---|---|---|---|
| 2026-09-23 | 18.9°C | 00:53 UTC | 12.8°C | 07:53 UTC |
| 2026-09-22 | 20.0°C | 22:53 UTC | 15.0°C | 15:19 UTC |
Nearby stations
Data sources for this page
| Figure | Source | Type |
|---|---|---|
| Right now, today so far | NOAA Aviation Weather Center (METAR) and NOAA NWS WMO bulletins (SYNOP) | Measured, station |
| All-time, monthly and on-this-day records | NOAA NCEI Global Historical Climatology Network daily (GHCN-Daily), 1948 to 2026 | Measured, station |
| Nearby stations and distances | Computed from station positions in our own database | Calculated |
