106
CXUS51 KLWX 030002
CLMDCA
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
802 PM EDT MON OCT 02 2023
...............................
...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2023
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..........................................................
TEMPERATURE (F)
RECORD
HIGH 104 09/07/1881
LOW 36 09/23/1904
HIGHEST 99 09/05 92 7 91
LOWEST 55 09/28 48 7 51
AVG. MAXIMUM 81.6 80.7 0.9 81.6
AVG. MINIMUM 65.1 64.1 1.0 63.8
MEAN 73.4 72.4 1.0 72.7
DAYS MAX >= 90 6 3.6 2.4 2
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 17.45 1934
MINIMUM 0.11 2005
TOTALS 3.60 3.93 -0.33 2.27
DAILY AVG. 0.12 0.13 -0.01 0.08
DAYS >= .01 11 8.7 2.3 8
DAYS >= .10 5 5.8 -0.8 4
DAYS >= .50 3 2.5 0.5 2
DAYS >= 1.00 1 1.0 0.0 0
GREATEST
24 HR. TOTAL 2.01 09/23 TO 09/24 0.91
STORM TOTAL 1.36 0.86
(MM/DD(HH))
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0 MM
DAYS >= TRACE 0 0.0 0.0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0
DEGREE DAYS
HEATING TOTAL 9 16 -7 17
SINCE 7/1 9 14 -5 MM
COOLING TOTAL 269 238 31 258
SINCE 1/1 1635 1690 -55 MM
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WIND (MPH)
AVERAGE WIND SPEED 8.0
HIGHEST WIND SPEED/DIRECTION 30/100
30/040
HIGHEST GUST SPEED/DIRECTION 43/060
SKY COVER
AVERAGE SKY COVER 0.61
AVERAGE RH (PERCENT) 67
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 5 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 5
LIGHT RAIN 14 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 7 FOG W/VIS <= 1/4 MILE 0
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
AFTER RECORD HEAT TO BEGIN THE MONTH, SEPTEMBER WOUND UP JUST ABOUT 1
DEGREE ABOVE NORMAL. THUNDERSTORMS JUST AFTER THE EARLY MONTH HEAT
BROKE, AND THE REMNANTS OF TROPICAL STORM OPHELIA LATE IN THE MONTH
WERE NOT ENOUGH TO KEEP PRECIPITATION FROM BEING JUST BELOW NORMAL.
DHOF
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