Monthly Precipitation Anomaly

Monthly Precipitation & Anomaly
M.U. Weather Center/Lancaster, PA

Much Below
Precip. < -1.25 SD

Below
Precip. < -0.5 SD

 Normal
-0.5 SD <= Precip. <= 0. 5 SD		 Above
Precip. > 0.5 SD		 Much Above
Precip. > 1.25 SD 

Bold type indicates wettest and driest month of record.
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1914 3.74 2.46 1.44 2.90 1.75 4.10 6.57 3.26 0.78 1.15 1.72 6.07 35.94
1915 4.56 4.13 1.00 4.30 3.70 6.60 3.80 9.62 2.78 2.63 1.78 3.56 48.46
1916 1.95 2.78 3.59 2.74 3.59 4.32 7.40 2.09 2.81 0.99 1.44 4.39 38.09
1917 3.10 0.89 2.67 1.38 2.18 5.03 3.80 2.25 3.17 4.81 0.96 0.76 31.00
1918 4.77 1.64 1.83 5.07 3.04 1.71 4.14 1.43 3.71 0.85 1.55 4.62 34.36
1919
 3.34 2.74 3.39 3.22 3.11 7.82 7.82 3.25 3.39 3.39 4.39 2.61 43.95
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1920 1.88 1.72 3.47 5.64 2.81 4.72 2.00 9.29 2.82 1.00 3.42 3.51 42.28
1921 3.14 2.34 1.94 3.15 3.39 0.92 3.45 3.48 1.91 1.37 5.34 1.83 32.26
1922 2.76 1.47 4.09 1.28 2.88 3.50 3.47 2.05 0.42 2.68 0.62 3.01 28.23
1923 4.71 2.39 3.66 3.37 3.12 1.79 2.94 2.41 3.46 4.14 2.61 4.26 38.86
1924 4.77 3.50 4.59 4.04 5.07 7.69 3.73 3.98 6.20 0.07 1.24 2.24 47.12
1925 2.59 1.36 2.85 3.48 2.32 1.61 6.17 2.75 1.98 5.46 2.53 1.46 34.56
1926 3.03 3.62 1.54 2.00 3.30 2.52 6.44 5.38 3.13 3.34 4.62 2.31 41.23
1927 2.07 2.97 1.83 3.54 2.29 4.31 5.02 5.70 7.00 5.66 3.08 4.12 47.59
1928 3.44 4.28 2.72 5.23 2.38 8.41 3.69 4.49 4.06 1.06 2.13 0.99 42.88
1929 2.82 3.42 3.10 4.98 3.33 4.65 2.98 2.55 3.32 4.65 2.90 1.83 40.53
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1930 2.85 2.69 2.79 2.25 2.41 3.43 1.69 0.92 3.00 0.65 1.11 2.58 26.37
1931 1.81 1.65 4.36 1.89 2.33 3.25 5.73 5.36 2.81 1.64 0.58 1.86 33.27
1932 4.29 1.89 6.19 1.41 3.99 4.28 3.61 5.23 1.67 8.39 4.13 3.14 48.22
1933 1.85 2.53 6.13 5.07 4.86 2.66 9.13 13.94 4.52 2.16 0.63 2.74 56.22
1934 2.41 2.10 4.55 3.76 4.35 3.51 5.41 4.39 9.83 1.36 3.40 2.58 47.65
1935 3.30 2.40 2.42 4.68 1.62 3.72 6.35 1.90 3.99 1.56 5.99 2.70 40.63
1936 5.83 2.41 6.60 2.86 1.73 4.55 4.55 6.92 0.94 3.27 1.01 5.30 45.97
1937 5.18 2.47 1.43 4.53 2.54 5.74 8.32 10.58 0.81 5.78 2.91 1.12 51.41
1938 1.99 2.20 2.94 2.12 3.46 6.89 7.11 3.04 4.62 2.53 2.88 2.78 42.56
1939 3.12 5.54 2.85 3.97 0.50 3.65 4.18 6.26 2.81 6.08 0.58  2.36 41.90
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1940 1.26 2.55 4.62 6.43 4.21 2.19 2.44 4.24 6.08 2.72 5.09 3.10 44.93
1941 2.72 1.39 3.07 1.97 2.16 3.97 9.48 4.21 0.69 1.16 2.33 3.13 36.28
1942 2.64 2.08 4.09 1.67 6.99 4.43 6.13 7.90 3.30 5.14 2.95 4.27 51.59
1943 2.26 1.94 2.84 2.91 6.46 3.41 4.17 1.38 0.18 7.46 3.10 1.19 37.30
1944 2.03 1.54 5.26 5.45 3.45 3.54 1.52 5.82 4.77 2.03 4.34 3.61 43.36
1945 3.48 2.46 2.24 4.31 3.91 5.42 9.62 5.05 4.16 2.08 4.42 4.08 51.23
1946 1.00 2.11 3.79 1.21 7.84 7.53 3.54 6.34 3.43 3.13 1.03 2.52 43.47
1947 3.40 2.12 1.74 2.71 5.24 4.93 2.88 2.94 2.73 2.17 4.74 1.24 36.84

1948

 3.94 1.93 2.91 3.86 9.42 4.43 3.22 5.02 1.42 3.04 4.72 4.35 48.26
1949 5.63 2.78 1.20 4.14 3.23 0.67 6.01 1.54 2.50 2.74 1.44 3.94 35.82
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1950 1.97 3.83 5.23 1.84 5.70 3.32 4.35 2.71 3.46 2.35 4.76 4.01 43.53
1951 2.97 4.10 2.54 3.27 1.96 7.52 1.73 3.65 4.60 2.65 6.01 4.00 45.00
1952 4.19 1.55 4.68 8.35 4.45 2.00 7.05 4.59 5.60 1.23 4.63 3.61 51.93
1953 4.66 2.51 5.69 4.50 6.65 4.13 2.81 0.78 4.12 2.79 3.44 4.44 46.52
1954 1.92 1.13 3.66 3.45 3.41 0.35 1.64 5.16 1.90 3.44 3.00 2.36 31.42
1955 0.56 2.29 5.59 2.76 1.22 4.59 0.60  12.99 1.73 4.75 1.50 0.16 38.74
1956 1.88 3.81 4.81 2.79 1.96 3.79 4.92 3.71 4.29 4.19 3.22 3.45 42.82
1957 1.71 2.21 2.56 4.52 1.06 2.90 2.13 0.56 3.42 2.84 2.85 1.54 28.30

1958

 3.92 4.21 5.55 4.43 3.71 2.43 6.75 3.56 3.18 2.10 4.06 1.17 45.07
1959 1.85 1.58 2.55 3.09 1.08 3.74 5.89 4.10 1.79 4.52 2.16 3.51 35.86
YEAR
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
1960 2.48 3.12 2.11 3.62 6.37 3.41 5.86 4.23 10.07 1.31 2.50 2.32 47.40
1961 3.64 3.43 4.27 5.19 3.14 3.08 7.43 3.66 0.73 1.48 3.25 2.85 42.15
1962 1.87 3.55 2.37 4.15 1.46 4.27 0.46 5.61 3.31 3.27 4.40 2.77 37.49
1963 3.06 2.17 3.77 0.63 2.59 2.34 1.73 2.86 4.68 0.00 7.24 1.77 32.84
1964 3.89 2.89 2.12 7.51 1.19 1.86 3.10 1.54 1.80 1.90 2.04 3.30 33.14
1965 2.67 2.22 3.37 1.50 2.22 1.99 4.57 3.51 4.90 2.49 1.82 1.00 32.26
1966 3.33 3.20 1.49 3.96 3.46 0.54 1.75 2.41 5.26 3.23 2.75 2.76 34.14
1967 1.75 1.66 4.62 2.83 3.86 2.12 4.48 5.04 0.71 2.41 2.50 4.20 36.18

1968

 1.76 0.37 3.14 1.60 6.85 7.88 3.26 2.91 4.11 3.08 3.26 2.68 40.90
1969 1.07 1.19 1.86 1.36 1.12 4.03 8.01 3.13 3.71 0.85 2.52 5.92 34.77
YEAR
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
1970 0.99 3.20 3.69 5.71 2.67 3.91 8.71 2.23 1.34 3.86 5.36 3.74 45.41
1971 2.91 5.15 2.94 1.55 6.34 2.69 4.08 10.70 3.15 3.68 4.91 1.02 49.12
1972 2.24 4.37 2.10 3.93 4.39 14.14 4.63 0.43 2.64 2.20 8.05 4.64 53.76
1973 3.47 1.65 1.93 6.13 4.23 6.50 1.98 2.16 4.64 3.61 0.85 6.32 43.47
1974 2.32 0.82 3.97 5.28 4.04 4.73 1.93 7.61 4.66 1.71 1.91 4.27 43.25
1975 2.94 2.50 3.66 3.10 4.76 7.16 5.71 3.17 11.51 5.08 2.64 2.99 55.22
1976 5.65 1.84 3.03 1.14 4.80 5.40 3.79 3.40 5.99 6.21 0.76 1.60 43.61
1977 1.33 0.82 5.17 4.96 1.44 4.70 2.25 5.30 2.98 3.96 5.35 4.95 43.21

1978

 7.57 1.24 4.65 1.58 4.83 5.66 3.88 7.73 0.87 1.30 2.28 4.28 45.87
1979 8.12 3.94 1.83 3.68 3.84 1.70 4.63 4.04 6.69 3.67 2.17 1.77 46.08
YEAR
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
1980 1.17 0.48 6.02 5.25 4.63 3.31 2.66 1.47 1.24 2.52 3.19 0.61 32.55
1981 0.35 3.09 0.99 3.12 2.54 4.89 3.87 1.50 2.64 2.52 1.01 2.88 29.40
1982 3.13 2.95 2.18 4.30 2.61 5.51 2.48 1.63 2.75 1.65 3.52 1.85 34.56
1983 1.76 2.17 4.11 9.26 4.55 3.63 0.36 3.66 1.48 5.31 6.06 9.50 51.85
1984 1.76 5.61 5.36 4.12 5.02 3.62 8.53 2.23 1.67 4.60 2.70 1.99 47.21
1985 1.30 3.16 2.18 0.39  4.90 2.67 5.65 2.30 7.39 1.77 5.87 1.23 38.81
1986 2.72 3.69 2.00 3.58 1.67 7.88 6.58 6.85 1.31 2.77 6.37 5.19 50.61
1987 3.85 1.50 1.26 4.01 4.27 1.69 1.80 2.34 7.02 2.85 4.20 1.34 36.13

1988

 2.73 2.88 2.12 2.72 6.49 1.45 7.99 3.15 2.18 2.66 3.73 0.98 39.08
1989 2.81 2.21 2.78 1.49 10.07 4.93 6.71 1.94 3.80 4.95 3.20 1.26 46.15
YEAR
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
1990 4.31 1.58 2.05 2.98 5.39 2.19 3.84 6.02 2.39 4.28 3.16 4.69 42.88
1991 2.28 1.23 4.13 1.87 0.94 1.78 2.81 3.26 6.46 3.36 2.18 4.70 35.00
1992 1.32 1.17 4.16 1.70 3.46 2.60 3.40 1.66 4.07 1.92 3.73 3.03 32.22
1993 2.17 2.67 7.28 6.90 1.23 1.54 1.90 6.89 5.32 3.13 3.99 3.33 46.35
1994 4.28 4.21 5.92 1.97 4.87 3.71 6.89 5.10 3.76 1.64 3.18 2.87 48.40
1995 2.96 2.24 2.09 1.72 6.65 2.67 5.89 0.82 3.28 7.28 5.11 2.52 43.23
1996 7.06 1.84 4.44 4.43 4.12 5.59 6.71 4.51 4.51 6.11 4.91 5.85 59.05
1997 2.15 1.66 3.82 0.89 3.30 2.20 3.08 2.82 1.65 2.08 4.49 1.65 29.79

1998

 4.45 3.87 4.81 4.39 5.20 4.96 2.78 1.40 1.50 3.66 0.82 0.47 38.31
1999 5.35 2.75 3.04 2.52 1.60 1.63 1.35 3.11 11.71  2.59 2.21 2.63 40.49
YEAR
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
2000
2.49
2.23
4.66
2.18
4.34
3.50
1.51
1.70
6.85
0.55
1.12
3.61
34.74
2001
1.97
1.39
3.50
1.28
1.84
2.03
1.44
4.47
2.40
0.59
0.76
1.01
22.68
2002
2.38
0.27
3.09
1.79
3.51
3.63
0.74
2.16
2.60
6.33
3.08
4.19
33.77
2003
1.71
4.65
2.91
2.12
3.01
5.35
3.81
5.08
8.59
3.71
4.49
4.24
49.86
2004
2.06
2.63
1.88
4.53
3.06
5.82
5.64
4.55
4.38
1.82
3.48
2.71
42.56
2005
3.76
2.11
3.01
3.76
1.14
2.96
5.04
1.08
1.02
9.04
2.79
3.16
38.87
2006
3.66
2.30
0.65
4.36
2.33
13.34
3.34
1.06
5.87
2.95
6.46
2.11
48.43
2007
2.33
2.40
3.66
5.04
1.24
3.77
3.87
5.28
0.44
4.55
2.75
4.22
39.45
2008
0.97
4.43
3.21
3.06
5.12
2.72
3.16
1.38
7.74
2.12
1.81
4.64
40.36
2009
1.77
0.33
1.64
4.31
4.83
5.25
2.28
8.23
5.56
5.78
2.04
5.55
47.57
YEAR
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
ANNUAL
2010 1.66 3.40
3.13
1.84
5.39
 3.00 7.40 1.31 7.36 3.44 2.35 2.09 42.37
2011 2.36 2.48 4.61 6.14 3.87 3.42 1.99 6.98 10.78 3.72 4.13 3.09 53.57
2012 1.70 1.80 0.89 2.32 3.29 5.15 3.50 1.58 5.11 8.28 0.99 3.07 37.68
2013 4.58 1.23 2.38 2.71 3.01 5.66 6.26 3.11 1.93 8.20 2.07 4.71 45.85
2014 2.93 4.96 2.84 5.81 2.92 2.51 7.19 1.57 1.36 4.59 3.02 3.04 42.58
2015 2.54 0.83 3.84 1.56 3.35 8.37 3.81 1.57 6.68 3.10 1.15 3.37 40.13
2016 3.40 4.10 1.68 2.09 3.95 3.31 5.71 1.26 2.55 1.15 2.30 2.17 33.67
2017 2.94 1.47 3.57 3.34 3.52 2.49 5.03 4.28 1.98 2.94 2.07 1.40 35.03
2018 1.56 4.80 2.89 3.96 5.08 7.33 6.98 8.24 6.30 2.03 7.61 4.55 61.33
2019 2.89 2.31 5.38 2.83 5.21 3.43 3.89 2.36 1.52 5.73 1.18 3.64 40.37
2020 3.71 2.28 3.15 5.36 2.65 2.35 2.30 7.18 2.55 3.05 2.81 4.27 41.66
2021 1.70 3.70 2.60 2.60 2.84 2.69 6.30 6.52 7.47 3.40 0.99 0.65 41.46
2022 2.56 2.50 2.34 3.42 5.61 1.49 3.32 3.86