Climatological Report (Monthly)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
969
CXUS51 KLWX 020434
CLMIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1234 AM EDT THU MAY 02 2024
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...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF APRIL 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 93 04/06/2010
04/17/2002
LOW 17 04/01/1969
HIGHEST 91 04/29 85 6 88
LOWEST 34 04/04 25 9 30
04/07
04/23
AVG. MAXIMUM 69.7 66.8 2.9 72.7
AVG. MINIMUM 48.4 43.2 5.2 45.6
MEAN 59.0 55.0 4.0 59.1
DAYS MAX >= 90 1 0.4 0.6 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 3.7 -3.7 2
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.41 2014
MINIMUM 0.33 1985
TOTALS 1.74 3.47 -1.73 3.30
DAILY AVG. 0.06 0.12 -0.06 0.11
DAYS >= .01 10 11.0 -1.0 8
DAYS >= .10 6 6.3 -0.3 5
DAYS >= .50 1 2.0 -1.0 2
DAYS >= 1.00 0 0.8 -0.8 2
GREATEST
24 HR. TOTAL 0.89 04/02 TO 04/03 1.43
STORM TOTAL 0.66 1.41
(MM/DD(HH))
SNOWFALL (INCHES)
RECORDS
TOTAL 4.0 1990
TOTALS T 0.1 -0.1 0.0
SINCE 7/1 11.7 21.0 -9.3 MM
DAYS >= TRACE 1 0.1 0.9 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0
DEGREE DAYS
HEATING TOTAL 215 320 -105 213
SINCE 7/1 3643 4477 -834 MM
COOLING TOTAL 44 20 24 44
SINCE 1/1 47 22 25 MM
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WIND (MPH)
AVERAGE WIND SPEED 8.0
HIGHEST WIND SPEED/DIRECTION 35/290
HIGHEST GUST SPEED/DIRECTION 53/290
SKY COVER
AVERAGE SKY COVER 0.63
AVERAGE RH (PERCENT) 60
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 6
LIGHT RAIN 16 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 1
FOG 10 FOG W/VIS <= 1/4 MILE 1
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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