Table 15. Monthly and annual average number of days (%) when the minimum daily air temperature
was at or below 32 degrees F. and at or below 0 degrees F. at CFA(a).

                      Number of Days                        Number of Days
               with Minimum <= 32 degrees F.         with Minimum <= 0 degrees F.
              Average     Highest     Lowest        Average     Highest     Lowest
                 (%)        (%)        (%)             (%)        (%)        (%)

January          99        100         94              37         77          0
February         99        100         89              26         86          0
March            95        100         68               6         42          0
April            73        100         37               0          0          0
May              30         65          3               0          0          0
June              6         17          0               0          0          0
July              0          6          0               0          0          0
August            1         16          0               0          0          0
September        25         57          0               0          0          0
October          74         97         39               0         10          0
November         94        100         73               7         27          0
December         99        100         84              32         68          0

ANNUAL           58         64         51               9         24          3

a. Data period of record spans January 1950 through December 2023.