WFO Monthly/Daily Climate Data Issued by NWS Sterling, VA
895
CXUS51 KLWX 031925
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: WASHINGTON DULLES DC
MONTH: JANUARY
YEAR: 2021
LATITUDE: 38 57 N
LONGITUDE: 77 27 W
TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND
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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
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1 39 34 37 4 28 0 0.83 0.0 0 5.5 22 110 M M 10 1 30 110
2 56 35 46 13 19 0 0.00 0.0 0 6.7 22 290 M M 9 12 30 300
3 42 34 38 5 27 0 0.30 0.0 0 4.9 12 320 M M 9 1 16 320
4 44 28 36 3 29 0 0.00 0.0 0 3.7 10 350 M M 7 12 14 340
5 40 37 39 6 26 0 0.01 0.0 0 3.9 15 280 M M 10 1 18 280
6 41 34 38 5 27 0 0.00 0.0 0 10.4 22 330 M M 9 32 330
7 46 30 38 5 27 0 0.00 0.0 0 9.4 21 330 M M 4 30 330
8 39 29 34 1 31 0 0.00 0.0 0 6.9 13 340 M M 9 18 330
9 46 30 38 5 27 0 0.00 0.0 0 12.8 21 330 M M 3 30 340
10 48 25 37 4 28 0 0.00 0.0 0 7.1 18 330 M M 1 26 350
11 42 22 32 -1 33 0 0.00 0.0 0 1.1 7 200 M M 5 9 200
12 49 20 35 2 30 0 0.00 0.0 0 1.7 9 310 M M 1 12 300
13 51 22 37 4 28 0 0.00 0.0 0 2.5 12 190 M M 1 15 190
14 56 24 40 7 25 0 0.00 0.0 0 2.5 8 350 M M 4 13 310
15 52 27 40 7 25 0 0.11 0.0 0 6.4 16 140 M M 8 1 23 110
16 46 29 38 5 27 0 0.00 0.0 0 7.2 16 310 M M 5 1 21 310
17 47 28 38 5 27 0 0.00 0.0 0 7.9 14 200 M M 8 18 220
18 45 29 37 4 28 0 T T 0 7.7 25 290 M M 7 34 290
19 51 26 39 6 26 0 0.00 0.0 0 6.6 21 280 M M 5 31 300
20 43 22 33 0 32 0 0.01 T T 10.5 30 290 M M 6 8 41 280
21 54 19 37 4 28 0 0.00 0.0 0 5.9 15 240 M M 3 23 250
22 49 26 38 5 27 0 0.00 0.0 0 8.7 24 310 M M 3 33 300
23 38 24 31 -2 34 0 0.00 0.0 0 14.5 26 330 M M 4 38 330
24 37 22 30 -3 35 0 0.00 0.0 0 6.1 16 300 M M 7 24 320
25 38 31 35 2 30 0 0.17 0.2 0 4.2 10 90 M M 10 16 15 70
26 37 31 34 0 31 0 0.14 0.0 0 1.9 9 10 M M 10 16 12 70
27 44 33 39 5 26 0 0.00 0.0 0 9.0 20 330 M M 8 12 29 320
28 35 26 31 -3 34 0 0.00 0.0 0 18.9 31 320 M M 6 43 320
29 31 22 27 -7 38 0 0.00 0.0 0 15.9 28 320 M M 7 40 300
30 39 19 29 -5 36 0 0.00 0.0 0 4.9 15 310 M M 3 22 310
31 32 28 30 -4 35 0 0.31 3.0 1 7.7 17 70 M M 10 16 24 60
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SM 1357 846 904 0 1.88 3.2 223.1 M 192
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AV 43.8 27.3 7.2 FASTST M M 6 MAX(MPH)
MISC ----> 31 320 43 320
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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: 2021
LATITUDE: 38 57 N
LONGITUDE: 77 27 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 35.5 TOTAL FOR MONTH: 1.88 1 = FOG OR MIST
DPTR FM NORMAL: 2.3 DPTR FM NORMAL: -0.80 2 = FOG REDUCING VISIBILITY
HIGHEST: 56 ON 14, 2 GRTST 24HR 1.03 ON 1- 2 TO 1/4 MILE OR LESS
LOWEST: 19 ON 30,21 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: 3.2 INCHES 5 = HAIL
GRTST 24HR 3.0 ON 31-31 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: 1 ON 31 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: 2 0.01 INCH OR MORE: 8
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 6
MIN 32 OR BELOW: 25 0.50 INCH OR MORE: 1
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
TOTAL THIS MO. 904 CLEAR (SCALE 0-3) 5
DPTR FM NORMAL -82 PTCLDY (SCALE 4-7) 17
TOTAL FM JUL 1 2373 CLOUDY (SCALE 8-10) 9
DPTR FM NORMAL -412
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 0 HIGHEST SLP 30.51 ON 1
DPTR FM NORMAL 0 LOWEST SLP 29.49 ON 16
[REMARKS]
#FINAL-01-21#