220
CXUS51 KLWX 011103
CLMIAD

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
603 AM EST SUN FEB 01 2026

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026

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           62   01/07         63      -1       59
LOWEST             3   01/27          2       1        4
AVG. MAXIMUM    39.8               42.6    -2.8     38.6
AVG. MINIMUM    21.5               25.2    -3.7     22.1
MEAN            30.6               33.9    -3.3     30.4
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     9                5.6     3.4        9
DAYS MIN <= 32    27               24.3     2.7       27
DAYS MIN <= 0      0                0.3    -0.3        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        6.61   1979
 MINIMUM        0.40   1981
TOTALS          3.18               2.94    0.24     2.00
DAILY AVG.      0.10               0.09    0.01     0.06
DAYS >= .01        7               10.3    -3.3        9
DAYS >= .10        2                5.9    -3.9        3
DAYS >= .50        2                2.0     0.0        2
DAYS >= 1.00       2                0.6     1.4        0
GREATEST
 24 HR. TOTAL   2.05   01/25 TO 01/25               0.85
 STORM TOTAL    1.84                                0.84
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL          30.9   1996
TOTALS           8.2                6.9     1.3     10.5
SINCE 7/1       10.2               10.0     0.2       MM
DAYS >= TRACE      6                3.1     2.9        8
DAYS >= 1.0        1                1.6    -0.6        3
GREATEST
 SNOW DEPTH        8R  01/26                           5

DEGREE DAYS
HEATING TOTAL   1058                964      94     1068
 SINCE 7/1      2785               2702      83       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1         0                  0       0       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.9
HIGHEST WIND SPEED/DIRECTION    36/320
                                36/300
HIGHEST GUST SPEED/DIRECTION    46/300

SKY COVER
AVERAGE SKY COVER           0.58

AVERAGE RH (PERCENT)     57

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

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

$$