550
CXUS51 KLWX 082335
CLMDCA

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
635 PM EST WED JAN 08 2025

...................................

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             79   12/07/1998
 LOW             -13   12/31/1880
HIGHEST           69   12/08         66       3       63
LOWEST            21   12/23         17       4       29
AVG. MAXIMUM    49.4               48.8     0.6     53.1
AVG. MINIMUM    34.4               34.5    -0.1     38.0
MEAN            41.9               41.7     0.2     45.5
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                1.3    -1.3        0
DAYS MIN <= 32    13               13.3    -0.3        6
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        7.56   1901
 MINIMUM        0.19   1889
TOTALS          2.88               3.41   -0.53     6.43
DAILY AVG.      0.09               0.11   -0.02     0.21
DAYS >= .01       11               10.1     0.9       11
DAYS >= .10        6                6.4    -0.4        8
DAYS >= .50        2                2.7    -0.7        4
DAYS >= 1.00       0                0.6    -0.6        3
GREATEST
 24 HR. TOTAL   0.94   12/10 TO 12/11               2.41
 STORM TOTAL    0.90                                1.92
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL          16.6   2009
TOTALS           0.1                1.7    -1.6      0.1
SINCE 7/1        0.1                1.8    -1.7       MM
DAYS >= TRACE      3                1.3     1.7        2
DAYS >= 1.0        0                0.5    -0.5        0
GREATEST
 SNOW DEPTH        0                                   0

DEGREE DAYS
HEATING TOTAL    708                724     -16      597
 SINCE 7/1      1131               1370    -239       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1      2029               1737     292       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.7
HIGHEST WIND SPEED/DIRECTION    37/280
HIGHEST GUST SPEED/DIRECTION    58/290

SKY COVER
AVERAGE SKY COVER           0.67

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       5
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                3     SLEET                      1
FOG                      10     FOG W/VIS <= 1/4 MILE      4
HAZE                      6

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$