WFO Monthly/Daily Climate Data
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CXUS51 KLWX 011434
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: WASHINGTON DULLES DC
MONTH: SEPTEMBER
YEAR: 2021
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 80 66 73 0 0 8 1.93 0.0 0 10.7 22 350 M M 10 13 34 350
2 80 56 68 -5 0 3 0.00 0.0 0 10.0 17 360 M M 1 27 340
3 79 52 66 -7 0 1 0.00 0.0 0 5.5 14 300 M M 2 19 320
4 80 56 68 -5 0 3 0.00 0.0 0 3.8 12 200 M M 4 16 180
5 75 67 71 -1 0 6 0.05 0.0 0 3.8 12 200 M M 9 1 19 160
6 85 62 74 2 0 9 0.01 0.0 0 6.7 18 280 M M 4 26 290
7 86 58 72 0 0 7 0.00 0.0 0 4.5 15 180 M M 2 21 180
8 89 67 78 6 0 13 0.01 0.0 0 9.4 16 200 M M 4 3 24 170
9 80 60 70 -1 0 5 0.43 0.0 0 5.8 22 310 M M 8 13 31 310
10 77 55 66 -5 0 1 0.00 0.0 0 8.8 23 320 M M 2 31 320
11 79 51 65 -5 0 0 0.00 0.0 0 4.9 15 200 M M 3 1 20 210
12 86 60 73 3 0 8 0.00 0.0 0 7.7 17 200 M M 1 23 190
13 88 67 78 8 0 13 T 0.0 0 3.4 15 290 M M 5 26 280
14 89 68 79 10 0 14 0.00 0.0 0 3.5 10 170 M M 4 1 16 160
15 89 68 79 10 0 14 T 0.0 0 8.5 18 210 M M 5 3 27 190
16 85 69 77 8 0 12 0.61 0.0 0 4.7 18 110 M M 7 13 27 110
17 82 70 76 8 0 11 T 0.0 0 5.2 13 100 M M 8 1 17 90
18 88 66 77 9 0 12 0.00 0.0 0 1.8 9 290 M M 5 1 12 290
19 80 62 71 3 0 6 0.00 0.0 0 4.6 10 20 M M 3 15 40
20 79 59 69 2 0 4 0.00 0.0 0 4.4 12 130 M M 6 16 120
21 81 61 71 4 0 6 T 0.0 0 4.9 12 130 M M 7 17 170
22 80 71 76 10 0 11 0.25 0.0 0 11.8 24 150 M M 9 1 35 150
23 76 52 64 -2 1 0 1.43 0.0 0 8.0 22 150 M M 7 13 37 160
24 74 47 61 -4 4 0 0.00 0.0 0 2.5 12 300 M M 1 17 310
25 76 47 62 -3 3 0 0.00 0.0 0 2.3 13 200 M M 4 16 310
26 75 53 64 -1 1 0 0.00 0.0 0 7.3 22 290 M M 2 30 290
27 80 50 65 1 0 0 0.00 0.0 0 6.3 15 190 M M 1 22 180
28 80 57 69 5 0 4 T 0.0 0 4.9 17 300 M M 5 3 22 300
29 73 50 62 -1 3 0 T 0.0 0 6.9 15 10 M M 2 22 10
30 74 45 60 -3 5 0 0.00 0.0 0 4.6 14 300 M M 1 1 19 320
================================================================================
SM 2425 1772 17 171 4.72 0.0 177.2 M 132
================================================================================
AV 80.8 59.1 5.9 FASTST M M 4 MAX(MPH)
MISC ----> 24 150 37 160
================================================================================
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: SEPTEMBER
YEAR: 2021
LATITUDE: 38 57 N
LONGITUDE: 77 27 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 70.0 TOTAL FOR MONTH: 4.72 1 = FOG OR MIST
DPTR FM NORMAL: 1.3 DPTR FM NORMAL: 0.78 2 = FOG REDUCING VISIBILITY
HIGHEST: 89 ON 15,14 GRTST 24HR 1.95 ON 31- 1 TO 1/4 MILE OR LESS
LOWEST: 45 ON 30 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: 0.0 INCH 5 = HAIL
GRTST 24HR 0.0 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: 0 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: 8
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 5
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 3
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 2
[HDD (BASE 65) ]
TOTAL THIS MO. 17 CLEAR (SCALE 0-3) 11
DPTR FM NORMAL -28 PTCLDY (SCALE 4-7) 16
TOTAL FM JUL 1 17 CLOUDY (SCALE 8-10) 3
DPTR FM NORMAL -27
[CDD (BASE 65) ]
TOTAL THIS MO. 171
DPTR FM NORMAL 19 [PRESSURE DATA]
TOTAL FM JAN 1 1423 HIGHEST SLP 30.30 ON 20
DPTR FM NORMAL 215 LOWEST SLP 29.48 ON 1
[REMARKS]
#FINAL-09-21#