Tempearture:

All Time Record High: 100 on July 20, 1994
All Time Record Low: 0 on January 31, 1950

Most Consecutive Days:
80 and over: 15 (7/30 - 8/13/77)
85 and over: 9   (8/5 - 8/13/77)
90 and over: 5   (8/7 - 8/11/81)

32 and under: 10 (1/21 - 1/30/69)
28 and under: 6 (1/27 - 2/1/77)
25 and under: 6 (1/13 - 1/18/50)

Low Temps 32 and under: 24 (12/23/46 - 1/15/47)
Low Temps 28 and under: 12 (1/24 - 2/4/72)
Low Temps 25 and under: 11 (1/25 - 2/4/72)

Rainfall:

Most Consecutive Days:
With Rain: 33 (1/6 - 2/7/53)
Wiith Rain (May-Sep): 11 (5/9 - 5/19/45)

With No Rain: 51 (7/7 - 8/26/51)
With No Rain (Nov-Feb): 21 (12/8 - 12/28/85)

Daily Records:

Greatest 48 Hr. Rainfall: 5.24" (10/20-10/21/03)
Greatest 24 Hr. Rainfall: 5.02" (10/20/03)
Greatest 2 Hr. Rainfall: 0.85" (10/6/81)
Greatest 1 Hr. Rainfall: 0.54" (9/8/79)
Greatest 30 Min. Rainfall: 0.35" (6/22/93)
Greatest 15 Min. Rainfall: 0.26" (6/22/93)
Greatest 10 Min. Rainfall: 0.20" (8/9/91)
Greatest 5 Min. Rainfall: 0.18"  (8/9/91)Wettest Day In Seattle: 5.02" on Oct. 20, 2003
Snowiest Day In Seattle: 20" on Jan. 13, 1950*
* 21.5" fell at the Federal Bldg. on Feb 2, 1916. 

Other Records:

Most Consecutive Days With Dense Fog (visibility 1/4 mile or less): 13 (12/16-12/28/85)
Fastest Wind Speed: 66 mph,  Nov. 13, 1981
Cloudiest Year: 1948
Sunniest Year: 1995