Climatological Report (Monthly)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
793
CXUS51 KLWX 011500
CLMIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1100 AM EDT TUE JUL 01 2025
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...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JUNE 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 102 06/29/2012
LOW 36 06/08/1977
HIGHEST 97 06/24 93 4 100
LOWEST 43 06/02 45 -2 47
AVG. MAXIMUM 85.2 83.1 2.1 88.8
AVG. MINIMUM 64.7 61.9 2.8 64.1
MEAN 74.9 72.5 2.4 76.5
DAYS MAX >= 90 10 5.7 4.3 14
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 18.19 1972
MINIMUM 0.52 1988
TOTALS 6.93 4.30 2.63 0.69
DAILY AVG. 0.23 0.14 0.09 0.02
DAYS >= .01 14 10.8 3.2 8
DAYS >= .10 8 6.7 1.3 2
DAYS >= .50 4 2.9 1.1 0
DAYS >= 1.00 3 1.2 1.8 0
GREATEST
24 HR. TOTAL 2.98 06/14 TO 06/15 0.36
STORM TOTAL 1.52 0.36
(MM/DD(HH))
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 15.5 21.0 -5.5 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 15 13 2 0
SINCE 7/1 4106 4603 -497 MM
COOLING TOTAL 321 238 83 354
SINCE 1/1 439 344 95 MM
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WIND (MPH)
AVERAGE WIND SPEED 5.1
HIGHEST WIND SPEED/DIRECTION 49/060
HIGHEST GUST SPEED/DIRECTION 70/070
SKY COVER
AVERAGE SKY COVER 0.61
AVERAGE RH (PERCENT) 74
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 11 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 7
LIGHT RAIN 17 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 13 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.
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