WFO Monthly/Daily Climate Data
Issued by NWS
Issued by NWS
245
CXUS55 KSEW 220930
CF6SEA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: SEATTLE-TACOMA WA AIRPORT
MONTH: MAY
YEAR: 2025
LATITUDE: 47 27 N
LONGITUDE: 122 18 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 76 43 60 6 5 0 0.00 0.0 0 4.9 9 290 M M 0 13 310
2 69 50 60 5 5 0 T 0.0 0 10.5 21 220 M M 4 30 240
3 57 45 51 -4 14 0 T 0.0 0 5.5 16 320 M M 9 25 320
4 61 42 52 -3 13 0 T 0.0 0 7.4 17 340 M M 4 24 330
5 70 42 56 1 9 0 0.00 0.0 0 6.2 14 350 M M 2 21 360
6 77 48 63 7 2 0 0.00 0.0 0 4.0 12 40 M M 6 15 30
7 66 46 56 0 9 0 T 0.0 0 10.9 21 220 M M 7 32 220
8 63 43 53 -3 12 0 0.00 0.0 0 7.8 16 300 M M 6 22 310
9 70 44 57 1 8 0 0.00 0.0 0 7.1 14 340 M M 7 18 340
10 63 49 56 0 9 0 T 0.0 0 6.9 16 250 M M 8 23 240
11 62 49 56 -1 9 0 0.02 0.0 0 6.4 21 200 M M 9 28 210
12 67 45 56 -1 9 0 T 0.0 0 8.0 18 280 M M 5 28 360
13 60 48 54 -3 11 0 T 0.0 0 9.9 15 200 M M 9 1 22 200
14 62 49 56 -1 9 0 0.02 0.0 0 10.9 17 220 M M 9 1 24 220
15 56 44 50 -8 15 0 0.11 0.0 0 9.2 15 200 M M 9 1 20 200
16 59 48 54 -4 11 0 0.03 0.0 0 6.3 12 200 M M 10 1 15 190
17 62 48 55 -3 10 0 0.18 0.0 0 7.1 20 220 M M 9 1 28 210
18 62 45 54 -4 11 0 0.00 0.0 0 10.1 17 220 M M 7 24 220
19 61 47 54 -4 11 0 0.24 0.0 0 13.7 25 220 M M 8 1 37 200
20 60 47 54 -4 11 0 0.00 0.0 0 12.7 21 220 M M 7 28 210
21 62 49 56 -3 9 0 0.00 0.0 0 6.9 14 290 M M 8 20 270
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SM 1345 971 202 0 0.60 0.0 172.4 M 143
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AV 64.0 46.2 8.2 FASTST M M 7 MAX(MPH)
MISC ----> 25 220 37 200
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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: SEATTLE-TACOMA WA AIRPORT
MONTH: MAY
YEAR: 2025
LATITUDE: 47 27 N
LONGITUDE: 122 18 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 55.1 TOTAL FOR MONTH: 0.60 1 = FOG OR MIST
DPTR FM NORMAL: -1.5 DPTR FM NORMAL: -0.72 2 = FOG REDUCING VISIBILITY
HIGHEST: 77 ON 6 GRTST 24HR 0.24 ON 19-19 TO 1/4 MILE OR LESS
LOWEST: 42 ON 5, 4 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: 6
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 3
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 0
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
TOTAL THIS MO. 202 CLEAR (SCALE 0-3) 2
DPTR FM NORMAL 21 PTCLDY (SCALE 4-7) 12
TOTAL FM JUL 1 4286 CLOUDY (SCALE 8-10) 7
DPTR FM NORMAL 89
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 0 HIGHEST SLP M ON M
DPTR FM NORMAL -1 LOWEST SLP 29.77 ON 12
[REMARKS]