WFO Monthly/Daily Climate Data
Issued by NWS
Issued by NWS
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CXUS55 KSEW 170930
CF6SEA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: SEATTLE-TACOMA WA AIRPORT
MONTH: MAY
YEAR: 2026
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 72 52 62 8 3 0 T 0.0 0 6.8 14 340 M M 7 20 340
2 74 49 62 7 3 0 0.00 0.0 0 7.7 16 350 M M 5 22 340
3 81 56 69 14 0 4 0.00 0.0 0 8.3 15 350 M M 2 20 340
4 77 53 65 10 0 0 0.00 0.0 0 6.9 13 240 M M 4 17 260
5 63 52 58 3 7 0 0.00 0.0 0 7.2 14 200 M M 6 20 210
6 57 51 54 -2 11 0 T 0.0 0 7.8 13 230 M M 10 1 18 240
7 64 50 57 1 8 0 0.00 0.0 0 4.7 13 270 M M 8 16 270
8 62 49 56 0 9 0 0.00 0.0 0 9.4 20 210 M M 7 25 230
9 69 48 59 3 6 0 0.00 0.0 0 4.8 12 310 M M 6 17 310
10 66 48 57 1 8 0 0.00 0.0 0 4.1 12 210 M M 7 16 230
11 72 51 62 5 3 0 0.00 0.0 0 9.7 16 20 M M 4 22 330
12 82 52 67 10 0 2 0.01 0.0 0 7.9 20 200 M M 7 27 210
13 58 51 55 -2 10 0 0.13 0.0 0 13.8 28 210 M M 8 1 43 220
14 62 48 55 -2 10 0 0.01 0.0 0 12.7 22 200 M M 8 1 29 220
15 51 45 48 -10 17 0 0.26 0.0 0 13.2 22 210 M M 9 1 30 190
16 59 44 52 -6 13 0 0.08 0.0 0 8.5 18 190 M M 8 1 25 180
================================================================================
SM 1069 799 108 6 0.49 0.0 133.5 M 106
================================================================================
AV 66.8 49.9 8.3 FASTST M M 7 MAX(MPH)
MISC ----> 28 210 43 220
================================================================================
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: 2026
LATITUDE: 47 27 N
LONGITUDE: 122 18 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 58.4 TOTAL FOR MONTH: 0.49 1 = FOG OR MIST
DPTR FM NORMAL: 2.3 DPTR FM NORMAL: -0.54 2 = FOG REDUCING VISIBILITY
HIGHEST: 82 ON 12 GRTST 24HR 0.28 ON 15-16 TO 1/4 MILE OR LESS
LOWEST: 44 ON 16 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: 5
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 2
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. 108 CLEAR (SCALE 0-3) 1
DPTR FM NORMAL -38 PTCLDY (SCALE 4-7) 12
TOTAL FM JUL 1 3814 CLOUDY (SCALE 8-10) 3
DPTR FM NORMAL -348
[CDD (BASE 65) ]
TOTAL THIS MO. 6
DPTR FM NORMAL 6 [PRESSURE DATA]
TOTAL FM JAN 1 6 HIGHEST SLP M ON M
DPTR FM NORMAL 5 LOWEST SLP 29.81 ON 12
[REMARKS]