Climatological Report (Monthly)
Issued by NWS Sterling, VA

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000
CXUS51 KLWX 010929
CLMIAD

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
429 AM EST THU FEB 01 2024

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2024...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             79   01/26/2024
 LOW             -18   01/22/1984
HIGHEST           79R  01/26         63      16       69
LOWEST             7   01/22          2       5       23
AVG. MAXIMUM    45.5               42.6     2.9     50.9
AVG. MINIMUM    28.3               25.2     3.1     33.8
MEAN            36.9               33.9     3.0     42.3
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     6                5.6     0.4        0
DAYS MIN <= 32    21               24.3    -3.3       15
DAYS MIN <= 0      0                0.3    -0.3        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        6.61   1979
 MINIMUM        0.40   1981
TOTALS          6.00               2.94    3.06     1.36
DAILY AVG.      0.19               0.09    0.10     0.04
DAYS >= .01       12               10.3     1.7       10
DAYS >= .10        9                5.9     3.1        5
DAYS >= .50        4                2.0     2.0        0
DAYS >= 1.00       2                0.6     1.4        0
GREATEST
 24 HR. TOTAL   1.76   01/09 TO 01/09               0.46
 STORM TOTAL    1.76                                0.46
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL          30.9   1996
TOTALS           9.5                6.9     2.6        T
SINCE 7/1       10.0               10.0     0.0       MM
DAYS >= TRACE      7                3.1     3.9        2
DAYS >= 1.0        2                1.6     0.4        0
GREATEST
 SNOW DEPTH        6R  01/20                           0

DEGREE DAYS
HEATING TOTAL    867                964     -97      693
 SINCE 7/1      2313               2702    -389       MM
COOLING TOTAL      3                  0       3        0
 SINCE 1/1         3                  0       3       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.4
HIGHEST WIND SPEED/DIRECTION    32/300
HIGHEST GUST SPEED/DIRECTION    50/130

SKY COVER
AVERAGE SKY COVER           0.66

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       5
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                7     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      2
HAZE                      4

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

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