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Monsoon
statistics for
Phoenix (1896-2008)
|
Top
10 Wettest Monsoon |
Top
10 Driest Monsoon |
1)
9.56"/1984 |
6)
6.96"/1951 |
1)
0.35"/1924 |
6)
0.78"/1980 |
2)
9.31"/1911 |
7)
6.15"/1943 |
2)
0.51"/1914 |
7)
0.79"/1910 |
3)
7.45"/1946 |
8)
6.03"/1897 |
3T)
0.61"/1993 |
8T)
0.86"/1962 |
4)
7.30"/1939 |
9)
5.99"/1955 |
3T)
0.61"/1932 |
8T)
0.86"/1944 |
5)
7.20"/1896 |
10)
5.70"/2008*** |
5)
0.74"/2007 |
10)
1.01"/1977 |
|
YEAR |
Month
by month rainfall
(thru September 23rd)
|
June
(15-30) |
July |
August |
September |
Total |
AVG |
0.09" |
0.99" |
0.94" |
0.75" |
2.77" |
2008 |
Trace |
2.15" |
3.55" |
Trace |
5.70" |
2007 |
0.00" |
0.36" |
0.31" |
0.07" |
0.74" |
2006 |
0.00" |
1.29" |
1.26" |
0.78" |
3.33" |
2005 |
Trace |
0.16" |
1.21" |
0.16" |
1.53" |
2004 |
0.00" |
0.59" |
0.36" |
0.15" |
1.10" |
2003 |
0.00" |
0.61" |
0.51" |
0.25" |
1.37" |
2002 |
Trace |
1.18" |
Trace |
0.50" |
1.68" |
2001 |
0.01" |
0.67" |
0.46" |
0.00" |
1.14" |
2000 |
0.34" |
0.28" |
0.58" |
0.01" |
1.21" |
1999 |
0.00" |
2.96" |
0.92" |
1.31" |
5.19" |
1998 |
0.00" |
1.94" |
1.05" |
0.58" |
3.57" |
1997 |
0.00" |
0.17" |
1.39" |
0.45" |
2.01" |
1996 |
0.00" |
1.04" |
0.34" |
0.54" |
1.92" |
1995 |
Trace |
Trace |
3.50" |
1.08" |
4.58" |
1994 |
Trace |
0.25" |
0.02" |
1.74" |
2.01" |
1993 |
0.00" |
Trace |
0.55" |
0.06" |
0.61" |
1992 |
0.00" |
2.95" |
1.30" |
0.03" |
4.28" |
1991 |
0.00" |
0.14" |
0.12" |
0.81" |
1.07" |
1990 |
0.00" |
1.05" |
2.70" |
1.11" |
4.86" |
1989 |
0.00" |
0.13" |
1.11" |
0.47" |
1.71" |
1988 |
0.02" |
0.87" |
0.63" |
0.00" |
1.52" |
1987 |
0.00" |
1.08" |
0.45" |
0.57" |
2.10" |
1986 |
0.01" |
1.19" |
1.27" |
0.47" |
2.94" |
1985 |
0.00" |
0.98" |
0.21" |
1.60" |
2.79" |
1984 |
0.18" |
5.15" |
0.87" |
3.36" |
9.56" |
1983 |
0.00" |
0.38" |
2.48" |
2.43" |
5.29" |
1982 |
Trace |
0.43" |
1.97" |
0.12" |
2.52" |
1981 |
Trace |
1.14" |
0.11" |
0.18" |
1.43" |
1980 |
0.03" |
0.56" |
0.06" |
0.13" |
0.78" |
1979 |
Trace |
0.34" |
1.18" |
0.09" |
1.61" |
1978 |
0.01" |
1.44" |
1.79" |
Trace |
3.24" |
1977 |
0.00" |
0.30" |
0.18" |
0.53" |
1.01" |
1976 |
0.09" |
1.48" |
0.12" |
1.69" |
3.38" |
1975 |
0.00" |
0.38" |
Trace |
0.82" |
1.20" |
1974 |
0.00" |
0.84" |
1.15" |
1.07" |
3.06" |
1973 |
0.00" |
1.30" |
Trace |
0.00" |
1.30" |
1972 |
1.64" |
0.72" |
1.20" |
0.28" |
3.84" |
1971 |
0.00" |
0.24" |
0.99" |
0.92" |
2.15" |
1970 |
0.00" |
0.48" |
1.02" |
2.85" |
4.35" |
1969 |
0.00" |
0.28" |
0.14" |
2.11" |
2.53" |
1968 |
0.00" |
1.70" |
0.59" |
0.00" |
2.29" |
1967 |
0.44" |
0.99" |
0.02" |
0.13" |
1.58" |
1966 |
0.22" |
0.09" |
2.17" |
2.00" |
4.48" |
1965 |
0.91" |
0.16" |
0.18" |
0.60" |
1.85" |
1964 |
0.00" |
0.60" |
1.29" |
1.80" |
3.69" |
1963 |
0.00" |
0.03" |
2.68" |
Trace |
2.71" |
1962 |
0.12" |
0.10" |
0.25" |
0.39" |
0.86" |
1961 |
Trace |
0.40" |
2.11" |
0.22" |
2.73" |
1960 |
0.00" |
0.25" |
0.82" |
0.12" |
1.19" |
1959 |
Trace |
0.45" |
1.36" |
0.04" |
1.85" |
1958 |
0.05" |
0.31" |
0.72" |
2.25" |
3.33" |
1957 |
Trace |
0.72" |
0.85" |
0.00" |
1.57" |
1956 |
0.01" |
0.92" |
0.46" |
0.02" |
1.41" |
1955 |
0.00" |
4.19" |
1.80" |
Trace |
5.99" |
1954 |
0.02" |
0.36" |
0.55" |
0.44" |
1.37" |
1953 |
0.00" |
0.74" |
0.53" |
0.00" |
1.27" |
1952 |
0.00" |
1.46" |
1.41" |
0.06" |
2.93" |
1951 |
Trace |
1.30" |
5.33" |
0.33" |
6.96" |
1950 |
0.10" |
0.93" |
0.45" |
0.87" |
2.35" |
1949 |
0.14" |
0.36" |
0.41" |
0.89" |
1.80" |
1948 |
0.00" |
0.79" |
0.25" |
Trace |
1.04" |
1947 |
0.00" |
0.13" |
1.21" |
0.39" |
1.73" |
1946 |
0.00" |
2.56" |
2.01" |
2.88" |
7.45" |
1945 |
0.00" |
0.93" |
0.41" |
Trace |
1.34" |
1944 |
0.00" |
0.70" |
0.09" |
0.07" |
0.86" |
1943 |
0.01" |
0.25" |
4.92" |
0.97" |
6.15" |
1942 |
0.00" |
1.24" |
1.10" |
0.21" |
2.55" |
1941 |
Trace |
1.39" |
0.85" |
1.79" |
4.03" |
1940 |
Trace |
0.66" |
0.48" |
1.43" |
2.57" |
1939 |
0.00" |
0.71" |
1.18" |
5.41" |
7.30" |
1938 |
0.28" |
0.25" |
0.97" |
Trace |
1.50" |
1937 |
Trace |
0.49" |
0.05" |
1.17" |
1.71" |
1936 |
Trace |
2.49" |
0.32" |
0.43" |
3.24" |
1935 |
0.00" |
0.93" |
1.27" |
1.30" |
3.50" |
1934 |
0.03" |
0.11" |
1.07" |
0.66" |
1.87" |
1933 |
0.21" |
0.30" |
0.38" |
1.62" |
2.51" |
1932 |
0.06" |
0.11" |
0.10" |
0.34" |
0.61" |
1931 |
Trace |
0.02" |
1.70" |
0.23" |
1.95" |
1930 |
0.16" |
0.68" |
0.59" |
0.51" |
1.94" |
1929 |
Trace |
0.79" |
2.09" |
0.19" |
3.07" |
1928 |
0.00" |
0.11" |
1.47" |
0.44" |
2.02" |
1927 |
0.07" |
0.24" |
0.69" |
0.83" |
1.83" |
1926 |
Trace |
1.31" |
0.11" |
3.52" |
4.94" |
1925 |
0.21" |
0.03" |
0.61" |
0.95" |
1.80" |
1924 |
Trace |
0.09" |
0.14" |
0.12" |
0.35" |
1923 |
0.00" |
0.77" |
0.65" |
0.97" |
2.39" |
1922 |
Trace |
0.74" |
0.58" |
0.13" |
1.45" |
1921 |
0.00" |
0.38" |
1.62" |
0.33" |
2.33" |
1920 |
Trace |
0.25" |
0.75" |
0.10" |
1.10" |
1919 |
Trace |
1.05" |
2.40" |
1.93" |
5.38" |
1918 |
0.08" |
1.02" |
3.47" |
0.39" |
4.96" |
1917 |
0.00" |
3.97" |
0.11" |
0.55" |
4.63" |
1916 |
0.00" |
0.77" |
0.30" |
1.66" |
2.73" |
1915 |
0.00" |
1.12" |
0.25" |
0.10" |
1.47" |
1914 |
Trace |
0.21" |
0.30" |
Trace |
0.51" |
1913 |
0.00" |
0.94" |
0.32" |
0.13" |
1.39" |
1912 |
Trace |
1.29" |
0.72" |
0.14" |
2.15" |
1911 |
Trace |
6.47" |
1.68" |
1.16" |
9.31" |
1910 |
Trace |
0.65" |
0.14" |
Trace |
0.79" |
1909 |
Trace |
1.00" |
1.94" |
0.42" |
3.36" |
1908 |
0.00" |
2.98" |
0.81" |
0.51" |
4.30" |
1907 |
Trace |
2.18" |
0.80" |
0.02" |
3.00" |
1906 |
Trace |
0.20" |
2.07" |
Trace |
2.27" |
1905 |
Trace |
0.28" |
0.92" |
1.23" |
2.43" |
1904 |
Trace |
1.89" |
1.61" |
1.23" |
4.73" |
1903 |
0.00" |
0.70" |
0.70" |
3.16" |
4.56" |
1902 |
0.12" |
0.32" |
0.56" |
1.46" |
2.46" |
1901 |
0.00" |
0.35" |
1.73" |
Trace |
2.08" |
1900 |
0.00" |
1.70" |
0.01" |
0.12" |
1.83" |
1899 |
0.61" |
0.87" |
0.89" |
0.37" |
2.74" |
1898 |
0.01" |
0.24" |
1.03" |
0.04" |
1.32" |
1897 |
0.00" |
0.59" |
1.77" |
3.67" |
6.03" |
1896 |
Trace |
4.25" |
1.77" |
1.18" |
7.20" |
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Phoenix
Monsoon start date occurrences by date (1948-2007) |
The
monsoon start date is determined when the average daily
|
dewpoint
is
55 degrees or greater for "3" consecutive days. |
The
start date is the first of the "3"
consecutive days. |
|
Dates |
#
occurrences |
Year(s) |
June
17 |
1 |
2000 |
June
18 |
. |
. |
June
19 |
1 |
1958 |
June
20 |
. |
. |
June
21 |
1 |
2001 |
June
22 |
. |
. |
June
23 |
1 |
1954 |
June
24 |
. |
. |
June
25 |
2 |
1999,
1984 |
June
26 |
. |
. |
June
27 |
2 |
1966,
1962 |
June
28 |
1 |
1959 |
June
29 |
2 |
1990,
1986 |
June
30 |
1 |
1996 |
July
1 |
3 |
1993,
1977, 1949 |
July
2 |
2 |
2006,
1961 |
July
3 |
6 |
1975,
1973, 1968, 1967, 1957, 1952 |
July
4 |
4 |
1998,
1991, 1953, 1950 |
July
5 |
. |
. |
July
6 |
3 |
1992,
1982, 1981 |
July
7 |
3 |
1988,
1983, 1964 |
July
8 |
1 |
1989 |
July
9 |
5 |
2002,
1985, 1978, 1976, 1965 |
July
10 |
1 |
1956 |
July
11 |
4 |
1995,
1969, 1955, 1951 |
July
12 |
1 |
2004 |
July
13 |
2 |
1972,
1971 |
July
14 |
1 |
1974 |
July
15 |
. |
. |
July
16 |
. |
. |
July
17 |
4 |
1994,
1979, 1970, 1948 |
July
18 |
2 |
2005,
2003 |
July
19 |
3 |
2007,
1980, 1963 |
July
20 |
. |
. |
July
21 |
2 |
1997,
1960 |
July
22 |
. |
. |
July
23 |
. |
. |
July
24 |
. |
. |
July
25 |
1 |
1987 |
Average
start dates by decade |
1950s |
July
3 |
. |
1960s |
July
7 |
. |
1970s |
July
10 |
. |
1980s |
July
8 |
Latest
start on record (7/25/1987) |
1990s |
July
6 |
. |
2000s |
July
7 |
Earliest
start on record (6/17/2000) |
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National Weather Service
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