Monthly Precipitation Data
Grand Rapids, Michigan
(July 1977 through June 1987)

Month/Year

Actual
precipitation

Normal
precipitation

Deviation
from normal

Snowfall/Ice

Cumulative
seasonal snowfall
July 1977 5.16 3.09 2.07 0 0
Aug. 1977 4.77 2.54 2.23 0 0
Sept. 1977 4.26 3.3 0.96 0 0
Oct. 1977 2.28 2.56 -0.28 0 0
Nov. 1977 2.34 2.8 -0.46 10.6 10.6
Dec. 1977 3.35 2.16 1.19 23.2 33.8
Jan. 1978 2.22 1.94 0.28 35.8 69.6
Feb. 1978 0.54 1.5 -0.96 8.8 78.4
Mar. 1978 2.01 2.5 -0.49 6.2 84.6
April 1978 2.55 3.39 -0.84 Trace 84.6
May 1978 2.91 3.19 -0.28 0 84.6
June 1978 4.65 3.42 1.23 0 84.6
July 1978 2.83 3.09 -0.26 0 0
Aug. 1978 5 2.54 2.46 0 0
Sept. 1978 5.62 3.3 2.32 0 0
Oct. 1978 3.05 2.56 0.49 Trace Trace
Nov. 1978 1.83 2.8 -0.97 6.2 6.2
Dec. 1978 3.32 2.16 1.16 30 36.2
Jan. 1979 2.09 1.94 0.15 45.5 81.7
Feb. 1979 0.61 1.5 -0.89 5.3 87
Mar. 1979 3.72 2.5 1.22 7.2 94.2
April 1979 3.56 3.39 0.17 1.8 96
May 1979 1.37 3.19 -1.82 0 96
June 1979 4.16 3.42 0.74 0 96
July 1979 2.27 3.09 -0.82 0 0
Aug. 1979 4.33 2.54 1.79 0 0
Sept. 1979 Trace 3.3 -3.3 0 0
Oct. 1979 2.1 2.56 -0.46 Trace Trace
Nov. 1979 5.46 2.8 2.66 9.4 9.4
Dec. 1979 2.97 2.16 0.81 2.6 12
Jan. 1980 1.76 1.94 -0.18 13.3 25.3
Feb. 1980 1.76 1.5 0.26 12.6 37.9
Mar. 1980 1.74 2.5 -0.76 6.6 44.5
April 1980 3.64 3.39 0.25 4 48.5
May 1980 3.19 3.19 0 Trace 48.5
June 1980 4 3.42 0.58 0 48.5
July 1980 5.9 3.09 2.81 0 0
Aug. 1980 3.18 2.54 0.64 0 0
Sept. 1980 4.57 3.3 1.27 0 0
Oct. 1980 1.99 2.56 -0.57 0.4 0.4
Nov. 1980 1.57 2.8 -1.23 5.5 5.9
Dec. 1980 3.6 2.16 1.44 17.3 23.2
Jan. 1981 0.47 1.94 -1.47 8.1 31.3
Feb. 1981 2.03 1.5 0.53 18.8 50.1
Mar. 1981 1.29 2.5 -1.21 1.4 51.5
April 1981 6.11 3.39 2.72 Trace 51.5
May 1981 8.29 3.19 5.1 0 51.5
June 1981 4.22 3.42 0.8 0 51.5
July 1981 3.74 3.09 0.65 0 0
Aug. 1981 2.95 2.54 0.41 0 0
Sept. 1981 9.52 3.3 6.22 0 0
Oct. 1981 2.54 2.56 -0.02 0 0
Nov. 1981 2.58 2.8 -0.22 4.4 4.4
Dec. 1981 1.1 2.16 -1.06 8.9 13.3
Jan. 1982 2.98 1.94 1.04 30.3 43.6
Feb. 1982 0.36 1.5 -1.14 6.7 50.3
Mar. 1982 3.36 2.5 0.86 11.8 62.1
April 1982 2.11 3.39 -1.28 12.4 74.5
May 1982 3.63 3.19 0.44 0 74.5
June 1982 2.45 3.42 -0.97 0 74.5
July 1982 3.81 3.09 0.72 0 0
Aug. 1982 3.07 2.54 0.53 0 0
Sept. 1982 1.92 3.3 -1.38 0 0
Oct. 1982 1.42 2.56 -1.14 0 0
Nov. 1982 5.36 2.8 2.56 5.2 5.2
Dec. 1982 6.49 2.16 4.33 8.2 13.4
Jan. 1983 1.33 1.91 -0.58 5.7 19.1
Feb. 1983 1.12 1.53 -0.41 2.9 22
Mar. 1983 3.3 2.48 0.82 13.2 35.2
April 1983 5.06 3.56 1.5 0.7 35.9
May 1983 4.64 3.03 1.61 0 35.9
June 1983 2.09 3.86 -1.77 0 35.9
July 1983 4.76 3.02 1.74 0 0
Aug. 1983 1.49 3.45 -1.96 0 0
Sept. 1983 4.87 3.14 1.73 0 0
Oct. 1983 2.66 2.89 -0.23 Trace Trace
Nov. 1983 3 2.93 0.07 4.7 4.7
Dec. 1983 2.79 2.55 0.24 34.8 39.5
Jan. 1984 0.94 1.91 -0.97 19.6 59.1
Feb. 1984 1.15 1.53 -0.38 1.6 60.7
Mar. 1984 2.77 2.48 0.29 10.6 71.3
April 1984 2.1 3.56 -1.46 0.1 71.4
May 1984 4.77 3.03 1.74 Trace 71.4
June 1984 0.62 3.86 -3.24 0 0
July 1984 2.12 3.02 -0.9 0 0
Aug. 1984 1.49 3.45 -1.96 0 0
Sept. 1984 2.16 3.14 -0.98 0 0
Oct. 1984 3.34 2.89 0.45 0 0
Nov. 1984 2.85 2.93 -0.08 Trace Teace
Dec. 1984 4.37 2.55 1.82 15.7 15.7
Jan. 1985 1.94 1.91 0.03 22.6 38.3
Feb. 1985 3.26 1.53 1.73 21.3 59.6
Mar. 1985 4.2 2.48 1.72 6.7 66.3
April 1985 2.54 3.56 -1.02 3.3 69.6
May 1985 1.36 3.03 -1.67 0 69.6
June 1985 1.68 3.86 -2.18 0 69.6
July 1985 3.09 3.02 0.07 0 0
Aug. 1985 6.48 3.45 3.03 0 0
Sept. 1985 4.26 3.14 1.12 0 0
Oct. 1985 4.64 2.89 1.75 0 0
Nov. 1985 5.45 2.93 2.52 3.5 3.5
Dec. 1985 2 2.55 -0.55 30.7 34.2
Jan. 1986 1.07 1.91 -0.84 18.4 52.6
Feb. 1986 3.34 1.53 1.81 20.2 72.8
Mar. 1986 2.35 2.48 -0.13 6.1 78.9
April 1986 2.58 3.56 -0.98 0.2 79.1
May 1986 3.88 3.03 0.85 0 79.1
June 1986 7.14 3.86 3.28 0 79.1
July 1986 5.27 3.02 2.25 0 0
Aug. 1986 5.3 3.45 1.85 0 0
Sept. 1986 11.85 3.14 8.71 0 0
Oct. 1986 2.76 2.89 -0.13 0 0
Nov. 1986 0.95 2.93 -1.98 5.3 5.3
Dec. 1986 1.04 2.55 -1.51 12.7 18
Jan. 1987 0.67 1.91 -1.24 19.2 37.2
Feb. 1987 0.37 1.53 -1.16 0.9 38.1
Mar. 1987 1.15 2.48 -1.33 5.7 43.8
April 1987 2.4 3.56 -1.16 3.8 47.6
May 1987 0.94 3.03 -2.09 0 47.6
June 1987 3.56 3.86 -0.3 0 47.6