Climatological Report (Monthly)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
089
CXUS51 KLWX 060401
CLMDCA
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1201 AM EDT FRI JUN 06 2025
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...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF MAY 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
..............................................................
TEMPERATURE (F)
RECORD
HIGH 99 05/31/1991
LOW 33 05/11/1906
HIGHEST 87 05/16 90 -3 91
05/17
LOWEST 49 05/10 44 5 48
AVG. MAXIMUM 74.7 76.5 -1.8 77.4
AVG. MINIMUM 59.3 58.0 1.3 61.2
MEAN 67.0 67.2 -0.2 69.3
DAYS MAX >= 90 0 2.1 -2.1 1
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 10.69 1953
MINIMUM 0.41 1939
TOTALS 7.73 3.94 3.79 4.30
DAILY AVG. 0.25 0.13 0.12 0.14
DAYS >= .01 15 11.6 3.4 17
DAYS >= .10 12 7.3 4.7 10
DAYS >= .50 7 2.8 4.2 3
DAYS >= 1.00 2 0.8 1.2 0
GREATEST
24 HR. TOTAL 1.68 05/13 TO 05/14 0.82
STORM TOTAL 1.58 0.82
(MM/DD(HH))
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 14.9 13.7 1.2 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 39 63 -24 33
SINCE 7/1 3291 3765 -474 MM
COOLING TOTAL 109 132 -23 176
SINCE 1/1 201 167 34 MM
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WIND (MPH)
AVERAGE WIND SPEED 8.5
HIGHEST WIND SPEED/DIRECTION 44/260
HIGHEST GUST SPEED/DIRECTION 69/260
SKY COVER
AVERAGE SKY COVER 0.74
AVERAGE RH (PERCENT) 68
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 9 MIXED PRECIP 0
HEAVY RAIN 9 RAIN 10
LIGHT RAIN 20 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 14 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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