WFO Monthly/Daily Climate Data
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CXUS51 KLWX 190915
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: WASHINGTON DULLES DC
MONTH: JANUARY
YEAR: 2025
LATITUDE: 38 57 N
LONGITUDE: 77 27 W
TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND
================================================================================
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18
12Z AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR
================================================================================
1 49 37 43 8 22 0 0.00 0.0 0 15.9 32 300 M M 7 12 48 330
2 42 34 38 3 27 0 0.00 0.0 0 13.5 30 300 M M 7 41 310
3 42 26 34 -1 31 0 0.05 0.2 0 10.2 33 300 M M 5 13 43 300
4 31 24 28 -6 37 0 0.00 0.0 0 18.0 32 290 M M 6 47 310
5 35 15 25 -9 40 0 0.00 0.0 0 4.3 15 320 M M 5 21 300
6 30 26 28 -6 37 0 0.64 6.0 4 9.4 24 320 M M 10 148 35 330
7 34 22 28 -6 37 0 0.00 0.0 4 18.6 30 300 M M 7 40 310
8 32 22 27 -7 38 0 0.00 0.0 4 15.0 33 300 M M 8 40 300
9 31 18 25 -9 40 0 0.00 0.0 4 15.5 30 320 M M 1 43 300
10 33 19 26 -8 39 0 0.06 0.8 4 6.7 16 200 M M 5 26 210
11 36 25 31 -3 34 0 0.06 1.8 5 10.6 31 300 M M 7 41 290
12 41 25 33 -1 32 0 0.00 0.0 4 5.6 21 300 M M 4 24 300
13 46 19 33 -1 32 0 0.00 0.0 3 4.6 15 290 M M 4 22 280
14 35 24 30 -4 35 0 T T 2 10.3 25 330 M M 3 35 310
15 30 19 25 -9 40 0 0.00 0.0 1 12.6 23 310 M M 1 31 310
16 35 9 22 -12 43 0 0.01 0.3 1 4.3 17 320 M M 7 24 320
17 44 32 38 4 27 0 0.00 0.0 1 7.2 22 310 M M 5 29 310
18 45 32 39 5 26 0 0.03 0.0 T 6.0 14 180 M M 7 22 190
================================================================================
SM 671 428 617 0 0.85 9.1 188.3 M 99
================================================================================
AV 37.3 23.8 10.5 FASTST M M 6 MAX(MPH)
MISC ----> # 33 300 48 330
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2
STATION: WASHINGTON DULLES DC
MONTH: JANUARY
YEAR: 2025
LATITUDE: 38 57 N
LONGITUDE: 77 27 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 30.5 TOTAL FOR MONTH: 0.85 1 = FOG OR MIST
DPTR FM NORMAL: -3.6 DPTR FM NORMAL: -0.85 2 = FOG REDUCING VISIBILITY
HIGHEST: 49 ON 1 GRTST 24HR 0.64 ON 6- 6 TO 1/4 MILE OR LESS
LOWEST: 9 ON 16 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: 9.1 INCHES 5 = HAIL
GRTST 24HR 6.0 ON 6- 6 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: 5 ON 11 7 = DUSTSTORM OR SANDSTORM:
VSBY 1/2 MILE OR LESS
8 = SMOKE OR HAZE
[NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW
X = TORNADO
MAX 32 OR BELOW: 5 0.01 INCH OR MORE: 6
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 1
MIN 32 OR BELOW: 16 0.50 INCH OR MORE: 1
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
TOTAL THIS MO. 617 CLEAR (SCALE 0-3) 2
DPTR FM NORMAL 63 PTCLDY (SCALE 4-7) 14
TOTAL FM JUL 1 2114 CLOUDY (SCALE 8-10) 2
DPTR FM NORMAL -185
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 0 HIGHEST SLP M ON M
DPTR FM NORMAL 0 LOWEST SLP 29.54 ON 1
[REMARKS]