SOURCE: National Weather Service Portland, Oregon
PORTLAND's
TOP 10 WETTEST DAYS OF EACH MONTH
and TOP 20 WET DAYS ON RECORD
Period of Record...October 1940 - May 1999
| Rank |
January |
February |
March |
April |
| |
Rainfall |
Date |
Rainfall |
Date |
Rainfall |
Date |
Rainfall |
Date |
| 1. |
2.48 |
6th 1948 |
2.16 |
6th 1996 |
1.54 |
29th 1983 |
1.25 |
21st 1988 |
| 2. |
2.33 |
31st 1987 |
1.90 |
7th 1996 |
1.47 |
31st 1943 |
1.23 |
12th 1955 |
| 3. |
2.03 |
22nd 1970 |
1.89 |
24th 1994 |
1.36 |
21st 1948 |
1.20 |
22nd 1996 |
| 4. |
1.98 |
15th 1974 |
1.86 |
8th 1996 |
1.27 |
9th 1983 |
1.20 |
7th 1984 |
| 5. |
1.98 |
19th 1950 |
1.78 |
17th 1949 |
1.26 |
3rd 1987 |
1.17 |
9th 1971 |
| 6. |
1.93 |
4th 1956 |
1.72 |
10th 1961 |
1.25 |
28th 1943 |
1.03 |
27th 1962 |
| 7. |
1.76 |
17th 1997 |
1.71 |
20th 1982 |
1.23 |
25th 1962 |
1.02 |
7th 1945 |
| 8. |
1.75 |
4th 1954 |
1.54 |
5th 1946 |
1.07 |
29th 1963 |
1.01 |
19th 1965 |
| 9. |
1.73 |
20th 1972 |
1.51 |
9th 1949 |
1.06 |
29th 1960 |
1.00 |
25th 1989 |
| 10. |
1.56 |
27th 1954 |
1.42 |
16th 1970 |
1.02 |
13th 1961 |
0.95 |
22nd 1961 |
| Rank |
May |
June |
July |
August |
| |
Rainfall |
Date |
Rainfall |
Date |
Rainfall |
Date |
Rainfall |
Date |
| 1. |
1.47 |
19th 1968 |
1.70 |
6th 1958 |
1.06 |
9th 1995 |
1.47 |
25th 1977 |
| 2. |
1.45 |
31st 1997 |
1.46 |
20th 1984 |
0.89 |
19th 1983 |
1.29 |
25th 1956 |
| 3. |
1.34 |
16th 1945 |
1.39 |
20th 1991 |
0.89 |
8th 1946 |
1.20 |
23rd 1977 |
| 4. |
1.20 |
17th 1991 |
1.36 |
6th 1985 |
0.84 |
20th 1954 |
1.20 |
19th 1968 |
| 5. |
1.08 |
31st 1993 |
1.02 |
7th 1981 |
0.81 |
16th 1989 |
1.13 |
29th 1983 |
| 6. |
1.08 |
13th 1978 |
0.97 |
1st 1968 |
0.81 |
8th 1974 |
0.94 |
6th 1976 |
| 7. |
1.07 |
5th 1948 |
0.92 |
6th 1994 |
0.81 |
2nd 1966 |
0.90 |
17th 1948 |
| 8. |
1.04 |
5th 1963 |
0.89 |
13th 1980 |
0.80 |
15th 1978 |
0.89 |
24th 1973 |
| 9. |
0.96 |
23rd 1997 |
0.87 |
23rd 1969 |
0.64 |
17th 1993 |
0.89 |
29th 1943 |
| 10. |
0.93 |
26th 1953 |
0.82 |
24th 1971 |
0.63 |
18th 1987 |
0.73 |
15th 1976 |
| Rank |
September |
October |
November |
December |
| |
Rainfall |
Date |
Rainfall |
Date |
Rainfall |
Date |
Rainfall |
Date |
| 1. |
2.23 |
17th 1969 |
2.44 |
31st 1994 |
2.69 |
19th 1996 |
2.17 |
27th 1942 |
| 2. |
2.03 |
14th 1996 |
2.44 |
27th 1994 |
2.43 |
15th 1950 |
2.08 |
2nd 1980 |
| 3. |
1.56 |
20th 1982 |
2.33 |
26th 1994 |
2.42 |
15th 1973 |
2.02 |
27th 1998 |
| 4. |
1.48 |
25th 1986 |
1.66 |
9th 1955 |
2.31 |
24th 1960 |
1.99 |
21st 1955 |
| 5. |
1.48 |
1st 1971 |
1.65 |
10th 1959 |
2.26 |
26th 1945 |
1.84 |
15th 1982 |
| 6. |
1.30 |
27th 1955 |
1.63 |
31st 1942 |
2.11 |
25th 1998 |
1.84 |
13th 1977 |
| 7. |
1.18 |
10th 1985 |
1.62 |
28th 1982 |
2.01 |
11th 1995 |
1.80 |
5th 1981 |
| 8. |
1.18 |
3rd 1945 |
1.40 |
18th 1979 |
1.99 |
26th 1945 |
1.80 |
21st 1964 |
| 9. |
1.11 |
26th 1948 |
1.32 |
19th 1947 |
1.97 |
27th 1984 |
1.79 |
27th 1965 |
| 10. |
1.00 |
4th 1959 |
1.31 |
22nd 1951 |
1.88 |
3rd 1983 |
1.74 |
2nd 1977 |
TOP 20 WETTEST DAYS SINCE 1940***
| Rank |
Rainfall |
Date of Occurrence |
| 1. |
2.69" |
November 19th, 1996 |
| 2. |
2.48" |
January 6th, 1948 |
| 3. |
2.44" |
October 31st, 1994 |
| 3. |
2.44" |
October 27th, 1994 |
| 5. |
2.43" |
November 15th, 1950 |
| 6. |
2.42" |
November 15th, 1973 |
| 7. |
2.33" |
October 26th, 1994 |
| 7. |
2.33" |
January 31st, 1987 |
| 9. |
2.31" |
November 24th, 1960 |
| 10. |
2.26" |
November 26th, 1945 |
| 11. |
2.16" |
February 6th, 1996 |
| 12. |
2.11" |
November 25th, 1998 |
| 13. |
2.03" |
September 14th, 1996 |
| 13. |
2.03" |
January 22nd, 1970 |
| 15. |
2.01" |
November 11th, 1995 |
| 16. |
1.99" |
November 18th, 1946 |
| 17. |
1.98" |
January 15th, 1974 |
| 17. |
1.98" |
January 19th, 1950 |
| 19. |
1.97" |
November 27th, 1984 |
| 20. |
1.93" |
January 4th, 1956 |
*** Including Downtown Portland records, the wettest day was December 13th, 1882 with 6.68 inches.
1Day is defined as midnight to midnight.