WFO Monthly/Daily Climate Data
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
116
CXUS51 KLWX 300815
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: WASHINGTON DULLES DC
MONTH: SEPTEMBER
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 81 50 66 -7 0 1 0.00 0.0 0 6.2 16 90 M M 3 23 70
2 79 51 65 -8 0 0 0.00 0.0 0 3.4 12 50 M M 3 1 19 30
3 83 51 67 -6 0 2 0.00 0.0 0 4.1 14 150 M M 3 20 140
4 87 62 75 2 0 10 T 0.0 0 10.1 21 220 M M 4 29 190
5 90 61 76 4 0 11 0.00 0.0 0 6.8 21 200 M M 4 30 190
6 94 63 79 7 0 14 0.02 0.0 0 8.2 22 310 M M 8 29 320
7 78 51 65 -7 0 0 0.01 0.0 0 8.1 16 320 M M 7 24 330
8 76 47 62 -10 3 0 0.00 0.0 0 4.6 13 40 M M 1 18 18 30
9 78 46 62 -9 3 0 0.00 0.0 0 6.1 15 70 M M 2 23 40
10 72 59 66 -5 0 1 0.15 0.0 0 6.9 14 360 M M 10 18 18 340
11 84 58 71 1 0 6 T 0.0 0 3.6 14 100 M M 6 1 20 10
12 84 56 70 0 0 5 0.00 0.0 0 4.3 13 70 M M 1 1 17 90
13 87 51 69 -1 0 4 0.00 0.0 0 5.1 13 140 M M 2 19 260
14 87 59 73 4 0 8 0.00 0.0 0 3.5 13 20 M M 6 8 17 20
15 84 59 72 3 0 7 0.00 0.0 0 6.0 17 70 M M 6 1 24 60
16 75 59 67 -2 0 2 0.69 0.0 0 10.7 22 50 M M 10 18 32 60
17 68 59 64 -4 1 0 0.18 0.0 0 10.2 16 350 M M 10 1 24 350
18 86 62 74 6 0 9 0.00 0.0 0 4.4 13 320 M M 5 1 19 310
19 89 56 73 5 0 8 0.00 0.0 0 2.3 10 300 M M 2 1 16 320
20 80 66 73 6 0 8 0.00 0.0 0 7.0 15 80 M M 7 8 19 80
21 74 66 70 3 0 5 0.00 0.0 0 6.8 12 120 M M 9 17 140
22 79 64 72 6 0 7 0.00 0.0 0 6.9 16 190 M M 7 22 190
23 85 64 75 9 0 10 0.01 0.0 0 6.0 12 210 M M 6 16 230
24 79 63 71 6 0 6 T 0.0 0 3.5 10 150 M M 8 1 14 100
25 82 70 76 11 0 11 0.16 0.0 0 8.2 18 190 M M 8 1 28 190
26 84 64 74 9 0 9 0.00 0.0 0 4.2 12 320 M M 7 16 360
27 77 64 71 7 0 6 T 0.0 0 4.1 13 360 M M 10 17 10
28 85 62 74 10 0 9 0.00 0.0 0 2.8 13 330 M M 5 22 350
29 79 60 70 7 0 5 0.00 0.0 0 4.3 10 30 M M 9 14 30
================================================================================
SM 2366 1703 7 164 1.22 0.0 168.4 M 169
================================================================================
AV 81.6 58.7 5.8 FASTST M M 6 MAX(MPH)
MISC ----> # 22 310 32 60
================================================================================
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: 2025
LATITUDE: 38 57 N
LONGITUDE: 77 27 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 70.2 TOTAL FOR MONTH: 1.22 1 = FOG OR MIST
DPTR FM NORMAL: 1.4 DPTR FM NORMAL: -2.57 2 = FOG REDUCING VISIBILITY
HIGHEST: 94 ON 6 GRTST 24HR 0.84 ON 16-17 TO 1/4 MILE OR LESS
LOWEST: 46 ON 9 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: 7
MAX 90 OR ABOVE: 2 0.10 INCH OR MORE: 4
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 1
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
TOTAL THIS MO. 7 CLEAR (SCALE 0-3) 8
DPTR FM NORMAL -32 PTCLDY (SCALE 4-7) 15
TOTAL FM JUL 1 9 CLOUDY (SCALE 8-10) 6
DPTR FM NORMAL -31
[CDD (BASE 65) ]
TOTAL THIS MO. 164
DPTR FM NORMAL 15 [PRESSURE DATA]
TOTAL FM JAN 1 1312 HIGHEST SLP M ON M
DPTR FM NORMAL 107 LOWEST SLP 29.73 ON 4
[REMARKS]