WFO Monthly/Daily Climate Data Issued by NWS Sterling, VA
000
CXUS51 KLWX 011631
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: WASHINGTON DULLES DC
MONTH: DECEMBER
YEAR: 2020
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 47 38 43 2 22 0 0.01 0.0 0 8.8 23 290 M M 9 33 280
2 48 34 41 0 24 0 0.00 0.0 0 11.4 29 300 M M 5 38 300
3 53 25 39 -1 26 0 0.00 0.0 0 2.6 12 180 M M 5 15 190
4 50 44 47 7 18 0 0.39 0.0 0 5.4 13 190 M M 9 1 17 180
5 48 41 45 5 20 0 0.59 0.0 0 14.9 25 310 M M 9 1 36 330
6 45 31 38 -1 27 0 0.00 0.0 0 11.4 20 310 M M 5 26 320
7 40 28 34 -5 31 0 0.00 0.0 0 8.7 18 320 M M 6 30 340
8 45 31 38 0 27 0 0.00 0.0 0 14.1 25 310 M M 1 33 320
9 44 26 35 -3 30 0 0.00 0.0 0 3.2 13 310 M M 4 18 300
10 54 24 39 1 26 0 0.00 0.0 0 2.9 9 180 M M 1 1 13 310
11 62 32 47 9 18 0 0.00 0.0 0 6.3 13 190 M M 2 1 18 200
12 65 36 51 14 14 0 T 0.0 0 6.9 21 220 M M 6 18 31 220
13 65 39 52 15 13 0 0.00 0.0 0 8.1 15 350 M M 4 21 340
14 44 34 39 2 26 0 1.24 0.0 0 9.0 25 320 M M 8 1 34 320
15 41 27 34 -2 31 0 0.00 0.0 0 6.3 14 320 M M 5 19 310
16 34 27 31 -5 34 0 1.30 2.3 0 10.4 24 300 M M 9 14568 33 10
17 36 28 32 -4 33 0 0.01 T 1 6.5 18 350 M M 7 1 25 10
18 37 27 32 -4 33 0 T 0.1 1 4.3 12 340 M M 10 1 16 360
19 36 23 30 -5 35 0 0.00 0.0 1 2.3 8 150 M M 8 12 170
20 46 32 39 4 26 0 0.00 0.0 T 4.9 14 190 M M 8 19 180
21 45 35 40 5 25 0 0.02 0.0 0 3.0 9 330 M M 9 12 12 330
22 49 34 42 7 23 0 T 0.0 0 12.4 33 300 M M 6 1 44 310
23 49 25 37 2 28 0 0.00 0.0 0 6.0 17 200 M M 6 25 210
24 61 43 52 18 13 0 1.94 0.0 0 7.6 24 220 M M 10 1 37 240
25 55 22 39 5 26 0 0.31 T 0 13.2 24 300 M M 9 1 33 320
26 35 20 28 -6 37 0 0.00 0.0 0 6.7 15 300 M M 5 20 310
27 41 19 30 -4 35 0 0.00 0.0 0 4.1 10 150 M M 6 17 150
28 56 32 44 10 21 0 0.00 0.0 0 9.6 16 200 M M 6 24 190
29 42 24 33 -1 32 0 0.00 0.0 0 10.3 22 310 M M 3 32 320
30 47 26 37 3 28 0 0.00 0.0 0 10.8 21 200 M M 8 32 180
31 51 39 45 11 20 0 T 0.0 0 9.8 24 200 M M 10 33 190
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SM 1471 946 802 0 5.81 2.4 241.9 M 199
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AV 47.5 30.5 7.8 FASTST M M 6 MAX(MPH)
MISC ----> 33 300 44 310
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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: DECEMBER
YEAR: 2020
LATITUDE: 38 57 N
LONGITUDE: 77 27 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 39.0 TOTAL FOR MONTH: 5.81 1 = FOG OR MIST
DPTR FM NORMAL: 2.4 DPTR FM NORMAL: 2.85 2 = FOG REDUCING VISIBILITY
HIGHEST: 65 ON 13,12 GRTST 24HR 2.25 ON 24-25 TO 1/4 MILE OR LESS
LOWEST: 19 ON 27 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: 2.4 INCHES 5 = HAIL
GRTST 24HR 2.3 ON 16-16 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: 1 ON 19,18 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: 0 0.01 INCH OR MORE: 9
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 6
MIN 32 OR BELOW: 20 0.50 INCH OR MORE: 4
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 3
[HDD (BASE 65) ]
TOTAL THIS MO. 802 CLEAR (SCALE 0-3) 3
DPTR FM NORMAL -80 PTCLDY (SCALE 4-7) 18
TOTAL FM JUL 1 1469 CLOUDY (SCALE 8-10) 10
DPTR FM NORMAL -329
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 1406 HIGHEST SLP 30.58 ON 30
DPTR FM NORMAL 228 LOWEST SLP 29.39 ON 25
[REMARKS]
#FINAL-12-20#