Historical Climate Data

Precipitation Summary
Station: 470045 AFTON, WI

1971-2000 NCDC Normals

 Element    JAN  FEB  MAR  APR MAY  JUN  JUL  AUG SEP  OCT  NOV  DEC ANN
 Precip (in)1.35 1.09 1.89 3.473.44 4.08 3.18 4.343.56 2.25 2.31 1.8232.78

Precipitation Extremes
Period of Record: 1987-2001

                                   1-Day
 Month High (in) Year Low (in) YearMax (in) Date
 JAN   2.64      1999 0.59     19891.08     01-19-1988
 FEB   3.15      1997 0.13     19951.65     02-09-2001
 MAR   3.94      1991 0.50     19991.61     03-31-1998
 APR   7.42      1993 1.37     19942.67     04-20-1993
 MAY   6.86      2000 1.00     19882.19     05-29-1996
 JUN   9.32      1993 0.51     19923.14     06-01-2000
 JUL   6.35      1992 1.34     19882.21     07-14-1992
 AUG   7.89      1998 0.61     19963.25     08-05-1998
 SEP   7.42      2001 1.37     19902.30     09-12-2000
 OCT   7.51      2001 0.54     19932.80     10-24-2001
 NOV   4.86      1992 0.65     19991.48     11-06-1994
 DEC   3.91      1987 0.42     19891.32     12-26-1988

 Annual47.05     1998 21.60    19893.25     08-05-1998
 Winter6.62      2001 3.16     19951.65     02-09-2001
 Spring15.68     1998 3.47     19942.67     04-20-1993
 Summer17.87     1998 6.72     19883.25     08-05-1998
 Fall  17.38     2001 4.03     19892.80     10-24-2001

Precipitation Threshold Climatology
Derived from 1987-2000 Averages

*Annual/seasonal totals may differ from the sum of the monthly totals due
to rounding.

       # Days        # Days        # Days        # Days
 Month Total ? 0.01" Total ? 0.10" Total ? 0.50" Total ? 1.00"
 JAN   11.5          5.1           0.5           0.1
 FEB   7.4           3.9           0.4           0.2
 MAR   9.7           4.3           1.1           0.3
 APR   12.6          6.6           2.6           0.6
 MAY   12.2          7.0           2.4           1.0
 JUN   11.1          6.9           2.8           1.5
 JUL   11.2          6.1           2.4           0.8
 AUG   10.3          6.0           2.9           1.0
 SEP   10.6          5.4           2.1           1.0
 OCT   9.8           4.6           1.4           0.4
 NOV   10.5          5.1           1.4           0.4
 DEC   10.2          4.4           0.6           0.2

 Annual127.0         65.4          20.6          7.4
 Winter29.2          13.4          1.5           0.5
 Spring34.5          18.0          6.1           1.9
 Summer32.5          19.0          8.1           3.2
 Fall  30.8          15.1          5.0           1.8