WFO Monthly/Daily Climate Data
Issued by NWS
Issued by NWS
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CXUS55 KSEW 291030
CF6SEA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: SEATTLE-TACOMA WA AIRPORT
MONTH: DECEMBER
YEAR: 2025
LATITUDE: 47 27 N
LONGITUDE: 122 18 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 46 35 41 -3 24 0 0.01 0.0 0 3.7 10 170 M M 9 16 80
2 48 43 46 3 19 0 T 0.0 0 4.1 12 20 M M 9 1 16 20
3 46 42 44 1 21 0 0.00 0.0 0 2.2 9 130 M M 10 12 150
4 46 41 44 1 21 0 0.45 0.0 0 5.0 14 170 M M 10 12 21 160
5 55 45 50 7 15 0 0.09 0.0 0 15.1 32 200 M M 9 1 51 210
6 52 48 50 7 15 0 T 0.0 0 16.7 33 210 M M 8 53 200
7 54 47 51 9 14 0 0.45 0.0 0 11.8 24 210 M M 9 1 38 200
8 56 47 52 10 13 0 1.15 0.0 0 15.4 29 200 M M 10 1 39 200
9 53 46 50 8 15 0 0.23 0.0 0 8.7 24 190 M M 9 1 30 180
10 57 53 55 13 10 0 1.60 0.0 0 18.4 24 200 M M 10 1 36 180
11 55 45 50 8 15 0 0.46 0.0 0 6.6 24 190 M M 10 1 35 200
12 55 45 50 8 15 0 0.04 0.0 0 3.8 10 160 M M 9 12 16 160
13 52 45 49 7 16 0 0.00 0.0 0 4.4 15 170 M M 8 12 21 160
14 53 46 50 8 15 0 0.06 0.0 0 6.0 15 180 M M 9 1 20 180
15 57 47 52 10 13 0 1.00 0.0 0 11.6 25 220 M M 9 18 40 190
16 55 47 51 9 14 0 0.99 0.0 0 12.2 29 190 M M 10 1 40 190
17 52 42 47 5 18 0 0.38 0.0 0 16.8 37 210 M M 7 1 51 220
18 50 42 46 4 19 0 0.34 0.0 0 13.4 29 210 M M 9 1 41 210
19 43 38 41 -1 24 0 0.09 0.0 0 14.0 23 200 M M 6 1 33 200
20 45 40 43 1 22 0 0.29 0.0 0 13.0 25 190 M M 10 1 34 200
21 48 42 45 3 20 0 0.20 0.0 0 9.0 16 200 M M 10 1 23 200
22 52 40 46 4 19 0 0.19 0.0 0 12.5 28 190 M M 8 1 41 180
23 45 37 41 -1 24 0 0.00 0.0 0 6.9 15 20 M M 7 22 20
24 47 35 41 -1 24 0 0.10 M M 12.0 22 210 M M 7 1 33 190
25 44 37 41 -1 24 0 0.23 M M 10.7 20 10 M M 8 1 25 360
26 45 36 41 -1 24 0 0.02 0.0 0 11.3 26 210 M M 7 41 220
27 41 36 39 -3 26 0 T 0.0 0 4.6 14 30 M M 8 1 16 20
28 41 30 36 -6 29 0 0.00 0.0 0 3.7 12 120 M M 7 17 110
================================================================================
SM 1393 1177 528 0 8.37 0.0 273.6 M 242
================================================================================
AV 49.8 42.0 9.8 FASTST M M 9 MAX(MPH)
MISC ----> 37 210 53 200
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2
STATION: SEATTLE-TACOMA WA AIRPORT
MONTH: DECEMBER
YEAR: 2025
LATITUDE: 47 27 N
LONGITUDE: 122 18 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 45.9 TOTAL FOR MONTH: 8.37 1 = FOG OR MIST
DPTR FM NORMAL: 3.6 DPTR FM NORMAL: 3.19 2 = FOG REDUCING VISIBILITY
HIGHEST: 57 ON 15,10 GRTST 24HR 1.66 ON 9-10 TO 1/4 MILE OR LESS
LOWEST: 30 ON 28 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: 21
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 15
MIN 32 OR BELOW: 1 0.50 INCH OR MORE: 4
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 3
[HDD (BASE 65) ]
TOTAL THIS MO. 528 CLEAR (SCALE 0-3) 0
DPTR FM NORMAL -112 PTCLDY (SCALE 4-7) 10
TOTAL FM JUL 1 1442 CLOUDY (SCALE 8-10) 18
DPTR FM NORMAL -259
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 328 HIGHEST SLP M ON M
DPTR FM NORMAL 65 LOWEST SLP 29.27 ON 17
[REMARKS]