SOURCE: National Weather Service Portland, Oregon

PORTLAND's ROSE FESTIVAL
Grand Floral Parade
Weather Statistics & Records, 1955-2006

The annual Rose Festival Parade is held in downtown Portland during early June, a time of transition from spring into summer. The weather can be cool and rainy, or hot and dry.

31 of the past parades have had measurable rain. The wettest parade day was June 9th, 1950 when 0.57 inch of rainfall fell. The next wettest was June 12th, 1982 with 0.50 inch of rain.

The warmest parade day was June 15th, 1963 when the temperature rose to 93 degrees while the coldest day was June 9th, 1933 with a cool 57 degree high temperature. On average, parade day temperatures top in the lower 70s (70.9 degrees).

Here are some quick statistics (based on 1955-2006 data):

Here is the early history of weather on Parade Day1:

Date/Year
High Temp
Low Temp
Rainfall
.
Date/Year
High Temp
Low Temp
Rainfall
June 4, 1908
64
49
0.00"
.
June 9, 1933
57
46
0.31
June 8, 1909
82
51
0.00"
.
June 14, 1934
75
53
0.00"
June 9, 1910
74
48
0.00"
.
June 7, 1935
72
58
0.00"
June 8, 1911
63
47
0.00"
.
June 12, 1936
78
58
0.00"
June 13, 1912
66
51
0.12"
.
June 11, 1937
70
55
0.40"
June 12, 1913
73
56
0.09"
.
June 10, 1938
82
48
0.00"
June 11, 1914
77
55
0.00"
.
June 9, 1939
71
55
Trace
June 10, 1915
62
48
0.25"
.
June 7, 1940
68
54
0.03"
June 8, 1916
66
50
0.00"
.
June 13, 1941
69
55
0.00"
June 12, 1919
72
49
0.13"
.
June 7, 1946
70
51
0.17"
June 24, 1920
59
45
0.11"
.
June 13, 1947
69
54
Trace
June 13, 1923
58
49
0.03"
.
June 12, 1948
66
56
0.19"
June 12, 1924
72
56
0.00"
.
June 10, 1949
71
58
0.00"
June 18, 1925
74
53
0.00"
.
June 9, 1950
77
53
0.57"
June 16, 1927
70
54
0.08"
.
June 8, 1951
72
49
0.00"
June 13, 1930
66
50
0.00"
.
June 12, 1952
69
46
0.04"
June 12, 1931
80
53
Trace
.
June 12, 1953
61
52
0.38"
June 17, 1932
75
46
0.00"
.
June 12, 1954
65
54
0.11"

1Some years are not listed. This is due to no parade that year, such as during World War II, or incomplete weather data.

Here is more weather history of the Rose Festival Parade Day:
Temperatures
Date/Year
Parade Sky Cover & Weather
Parade
Time
Afternoon
High
Morning
Low
Avg. Relative
Humidity
Average
10-Noon Wind
Day's
Precipitation
6/11/1955
Mostly Cloudy
58
76
66
66%
NW 8 mph
0.00"
6/9/1956
Cloudy
66
77
56
66%
E 6 mph
0.12"
6/15/1957
Cloudy
58
67
50
75
NW 3 mph
Trace
6/14/1958
Cloudy
63
75
58
70
NW 10
0.00"
6/13/1959
Partly Cloudy
61
64
53
67
W 6 mph
0.00"
6/11/1960
Cloudy
61
75
52
63
NW 9 mph
0.00"
6/10/1961
Sunny
58
71
47
60
W 6 mph
0.06"
6/16/1962
Mostly Cloudy
60
74
53
56
NW 7 mph
0.00"
6/15/1963
Mostly Sunny
75
93
66
48
NW 4 mph
0.00"
6/13/1964
Cloudy/Light Rain
62
72
55
65%
NW 6 mph
0.02"
6/12/1965
Partly Cloudy
57
68
45
55
W 6 mph
0.00"
6/11/1966
Cloudy/Light Rain
59
66
51
77
S 8 mph
0.04"
6/10/1967
Cloudy/Light Rain
56
66
42
80
SE 13 mph
Trace
6/8/1968
Cloudy
57
61
54
74
NW 9 mph
0.00"
6/14/1969
Sunny
65
82
61
63
W 10 mph
Trace
6/13/1970
Cloudy/Sprinkles
64
70
58
58
Calm winds
Trace
6/12/1971
Cloudy
60
64
49
61%
NW 3 mph
0.00"
6/10/1972
Sunny
60
70
47
58
N 3 mph
0.00"
6/9/1973
Mostly Cloudy
61
69
50
45
N 5 mph
0.00"
6/15/1974
Cloudy
66
71
59
56
NW 6 mph
0.00"
6/14/1975
Partly Cloudy
70
84
58
55
N 5 mph
0.00"
6/12/1976
Cloudy
59
63
43
57
NW 8 mph
0.00"
6/11/1977
Cloudy
58
65
52
70
NE 5 mph
0.00"
6/10/1978
Cloudy/Rain
58
63
53
82
SW 12 mph
0.24"
6/9/1979
Sunny
74
85
53
50
NW 8 mph
0.00"
6/12/1980
Cloudy/Light Rain
60
62
56
75
SW 5 mph
0.06"
6/13/1981
Mostly Cloudy
55
66
48
72%
NW 10 mph
0.00"
6/12/1982
Cloudy/Rain
55
60
55
90
S 4 mph
0.50"
6/11/1983
Cloudy/evening rain
60
66
53
65
S 6 mph
0.19"
6/9/1984
Cloudy/Light Rain
56
66
52
71%
NW 5 mph
0.09"
6/8/1985
Partly Cloudy
62
71
45
64
NW 8 mph
0.00"
6/7/1986
Cloudy
59
69
53
75%
NW 6 mph
Trace
6/6/1987
Sunny
61
75
51
64
NW 7 mph
0.00"
6/11/1988
Sunny
59
73
46
55
W 7 mph
0.00"
6/10/1989
Sunny
61
78
50
65%
NW 4 mph
0.00"
6/9/1990
Cloudy/Rain
59
65
58
80
NW 8 mph
0.43"
6/8/1991
Partly Cloudy
65
73
54
65%
NW 6 mph
0.00"
6/6/1992
Partly Cloudy
69
82
52
55%
NW 7 mph
0.00"
6/12/1993
Partly Cloudy
59
71
51
65%
NW 4 mph
Trace
6/11/1994
Partly Cloudy
63
81
58
61
W 7 mph
0.00"
6/10/1995
Cloudy/Light Rain
61
64
50
72%
S 8 mph
0.10"
6/8/1996
Partly Cloudy
61
74
57
55%
W 7 mph
Trace
6/7/1997
Mostly Cloudy
62
67
54
52
NW 10 mph
0.00"
6/6/1998
Mostly Sunny
64
81
53
55%
NW 4 mph
0.00"
6/12/1999
Mostly Sunny
69
87
61
NA
W 11 mph
0.00"
6/10/2000
Cloudy, occasional light rain
54
55
50
70-78%
S 11 mph
0.16"
6/9/2001
Mostly Cloudy
60
66
54
60-65%
W 9 mph.
0.09"
6/8/2002
Mostly cloudy with Few Showers, then partly sunny.
53
62
45
60-70%
W 6 mph
0.05"
6/7/2003
Sunny
73
91
60
40-45%
Light
0.00"
6/12/2004
Mostly Cloudy, then Partly sunny.
59
68
51
55%
NE 3 mph
Trace
6/11/2005
Cloudy. Light Rain
58
62
52
70-80%
W 10 mph
0.10
6/10/2006
Morning clouds, then Partly Sunny
60
72
55
60-65%
NW 6 mph
Trace
6/9/2007