National Weather Service National Headquarters

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS51 KLWX 041529
CLMDCA

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1029 AM EST THU JAN 04 2024

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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2024

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           63   12/10         66      -3       65
LOWEST            29   12/14         17      12        9
                       12/20
AVG. MAXIMUM    53.1               48.8     4.3     48.5
AVG. MINIMUM    38.0               34.5     3.5     31.7
MEAN            45.5               41.7     3.8     40.1
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                1.3    -1.3        1
DAYS MIN <= 32     6               13.3    -7.3       16
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        7.56   1901
 MINIMUM        0.19   1889
TOTALS          6.43               3.41    3.02     3.86
DAILY AVG.      0.21               0.11    0.10     0.12
DAYS >= .01       11               10.1     0.9        7
DAYS >= .10        8                6.4     1.6        6
DAYS >= .50        4                2.7     1.3        2
DAYS >= 1.00       3                0.6     2.4        2
GREATEST
 24 HR. TOTAL   2.41   12/17 TO 12/18               1.88
 STORM TOTAL    1.92                                1.88
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL          16.6   2009
TOTALS           0.1                1.7    -1.6        T
SINCE 7/1        0.1                1.8    -1.7       MM
DAYS >= TRACE      2                1.3     0.7        1
DAYS >= 1.0        0                0.5    -0.5        0
GREATEST
 SNOW DEPTH        0                                   0

DEGREE DAYS
HEATING TOTAL    597                724    -127      766
 SINCE 7/1      1186               1370    -184       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1      1710               1737     -27       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.6
HIGHEST WIND SPEED/DIRECTION    31/340
                                31/320
HIGHEST GUST SPEED/DIRECTION    52/310

SKY COVER
AVERAGE SKY COVER           0.69

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       7
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     SLEET                      1
FOG                      12     FOG W/VIS <= 1/4 MILE      5
HAZE                      0

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

$$