308
CXUS51 KLWX 011016
CLMDCA
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
616 AM EDT WED OCT 01 2025
...............................
...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
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
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TEMPERATURE (F)
RECORD
HIGH 104 09/07/1881
LOW 36 09/23/1904
HIGHEST 93 09/06 92 1 87
LOWEST 56 09/09 48 8 56
AVG. MAXIMUM 80.5 80.7 -0.2 79.7
AVG. MINIMUM 64.0 64.1 -0.1 65.3
MEAN 72.2 72.4 -0.2 72.5
DAYS MAX >= 90 2 3.6 -1.6 0
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 3.72 3.93 -0.21 2.31
DAILY AVG. 0.12 0.13 -0.01 0.08
DAYS >= .01 9 8.7 0.3 13
DAYS >= .10 7 5.8 1.2 6
DAYS >= .50 3 2.5 0.5 1
DAYS >= 1.00 1 1.0 0.0 0
GREATEST
24 HR. TOTAL 1.96 09/06 TO 09/07 0.59
STORM TOTAL 1.35 0.57
(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 0 16 -16 0
SINCE 7/1 0 14 -14 MM
COOLING TOTAL 226 238 -12 233
SINCE 1/1 1691 1690 1 MM
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WIND (MPH)
AVERAGE WIND SPEED 7.4
HIGHEST WIND SPEED/DIRECTION 38/310
HIGHEST GUST SPEED/DIRECTION 59/290
SKY COVER
AVERAGE SKY COVER 0.62
AVERAGE RH (PERCENT) 70
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 5
LIGHT RAIN 16 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 11 FOG W/VIS <= 1/4 MILE 0
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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