47.687°N, 122.255°W · station SEWthr · 133 years of record
62°F
HOTTEST OCT 17 SINCE 2025
forecast high · Oct 17
7-Day Forecast
NWS NDFD forecast high temperature for Seattle City.
This Day in History
Every year's high on each of the next 7 forecast dates at Seattle City — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.
Ranks
#30 / 131
warmest Oct 17 in 131 yrs of record
Warmest Oct 17 ever
72°F
set in 2003
Coolest Oct 17 ever
46°F
set in 1905
Forecast high 62°F — 30th warmest Oct 17 of 131 years · record 72°F (2003) · warmest since 2025.
Ranks
#71 / 131
warmest Oct 18 in 131 yrs of record
Warmest Oct 18 ever
73°F
set in 1895
Coolest Oct 18 ever
45°F
set in 1905
Forecast high 59°F — 71st warmest Oct 18 of 131 years · record 73°F (1895) · warmest since 2023.
Ranks
#65 / 130
warmest Oct 19 in 130 yrs of record
Warmest Oct 19 ever
74°F
set in 1938
Coolest Oct 19 ever
46°F
set in 1920
Forecast high 59°F — 65th warmest Oct 19 of 130 years · record 74°F (1938) · warmest since 2025.
Ranks
#69 / 131
warmest Oct 20 in 131 yrs of record
Warmest Oct 20 ever
70°F
set in 1938
Coolest Oct 20 ever
47°F
set in 1908
Forecast high 59°F — 69th warmest Oct 20 of 131 years · record 70°F (1938) · warmest since 2025.
Ranks
#38 / 131
warmest Oct 21 in 131 yrs of record
Warmest Oct 21 ever
74°F
set in 1901
Coolest Oct 21 ever
47°F
set in 1894
Forecast high 61°F — 38th warmest Oct 21 of 131 years · record 74°F (1901) · warmest since 2025.
Ranks
#56 / 131
warmest Oct 22 in 131 yrs of record
Warmest Oct 22 ever
79°F
set in 1901
Coolest Oct 22 ever
46°F
set in 1912
Forecast high 58°F — 56th warmest Oct 22 of 131 years · record 79°F (1901) · warmest since 2025.
Ranks
#69 / 131
warmest Oct 23 in 131 yrs of record
Warmest Oct 23 ever
75°F
set in 1965
Coolest Oct 23 ever
46°F
set in 1919
Forecast high 57°F — 69th warmest Oct 23 of 131 years · record 75°F (1965) · warmest since 2025.
The hottest and coldest ever recorded at Seattle City in each calendar month, and for the whole 1894–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
67°FJan 28, 1931
11°FJan 15, 1907
Feb
74°FFeb 29, 1968
11°FFeb 4, 1989
Mar
78°FMar 29, 2004
20°FMar 12, 1897
Apr
89°FApr 18, 2016
30°FApr 9, 1920
May
92°FMay 13, 1934
35°FMay 1, 1954
Jun
107°FJun 28, 2021
40°FJun 6, 1924
Jul
105°FJul 29, 2009
44°FJul 4, 1902
Aug
97°FAug 8, 1960
46°FAug 28, 1899
Sep
92°FSep 14, 1937
36°FSep 21, 1895
Oct
88°FOct 16, 2022
29°FOct 25, 1919
Nov
76°FNov 3, 2010
13°FNov 15, 1955
Dec
65°FDec 4, 1939
9°FDec 21, 1990
All-time
107°FJun 28, 2021
9°FDec 21, 1990
2026 Records So Far
Records set or tied at Seattle City so far this year — through Oct 15.
Record Highs in 2026
2 broke
plus 3 tied — daily record highs set this year
Record Lows in 2026
0 broke
plus 0 tied — daily record lows set this year
Record Warm Nights & Cold Days
Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.
Warmest low ever
73°F
record high minimum — the night it never cooled · Jun 28, 2021
Coldest high ever
18°F
record low maximum — the day it never warmed · Jan 7, 1909
Month
Warmest low
Coldest high
Jan
54°FJan 24, 1935
18°FJan 7, 1909
Feb
54°FFeb 28, 1901
20°FFeb 13, 1923
Mar
57°FMar 10, 1900
31°FMar 1, 1896
Apr
56°FApr 26, 1992
41°FApr 11, 1911
May
65°FMay 9, 1940
46°FMay 15, 1894
Jun
73°FJun 28, 2021
50°FJun 1, 1908
Jul
71°FJul 29, 2009
56°FJul 1, 1954
Aug
69°FAug 18, 2022
56°FAug 21, 1899
Sep
64°FSep 4, 1949
49°FSep 26, 1972
Oct
63°FOct 18, 1940
35°FOct 30, 1935
Nov
58°FNov 4, 2020
23°FNov 12, 1955
Dec
56°FDec 26, 1980
19°FDec 16, 1924
All-time
73°FJun 28, 2021
18°FJan 7, 1909
Hot Streaks
Current run
0 days
consecutive days with a high ≥ 90°F
Longest ever
6 days
record run, ended Jul 31 2022
So far in 2026
5 days
days with a high ≥ 90°F this year
Climate Normals
Normal high & low by month, from Seattle City's own 1991–2020 record. Today's normal high: 60°F · forecast is +2° vs normal.
Seattle City's observed daily high for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
2026 So Far
Every day this year against Seattle City's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.
Each cell is one day's high at Seattle City, coloured by temperature — 133 years of record, so heat waves read as warm streaks and cold snaps as blue.
Days Above the Mark
How many days a year hit a given high at Seattle City — counted through Oct 17 each year, so you can see whether 2026 is running hot. Pick a threshold:
5 days ≥90°F so far in 2026 — tied for the 7th most in 133 years. Normal for this point: 2. Record: 8 in 2015.
Share Card
A ready-to-share summary of Seattle City's outlook — post it, or link this page.