WFO Monthly/Daily Climate Data
Issued by NWS
Issued by NWS
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CXUS56 KMTR 300900
CF6SFO
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: SAN FRANCISCO AIRPORT
MONTH: MAY
YEAR: 2026
LATITUDE: 37 37 N
LONGITUDE: 122 23 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 63 54 59 0 6 0 0.00 M M 12.8 23 290 M M 8 18 35 280
2 61 54 58 -1 7 0 0.00 M M 11.1 20 270 M M 9 18 25 280
3 65 54 60 1 5 0 0.03 M M 9.3 20 250 M M 8 26 230
4 64 53 59 0 6 0 0.03 M M 8.1 17 280 M M 7 22 280
5 65 53 59 0 6 0 0.05 M M 10.4 18 260 M M 8 1 25 250
6 67 54 61 2 4 0 0.00 M M 13.2 28 280 M M 6 18 35 280
7 62 53 58 -1 7 0 0.00 M M 14.9 29 280 M M 7 18 37 270
8 60 53 57 -2 8 0 0.00 M M 15.7 29 280 M M 8 18 35 280
9 64 53 59 0 6 0 0.00 M M 13.1 31 280 M M 6 18 40 280
10 64 53 59 0 6 0 0.00 M M 13.5 22 300 M M 6 18 29 300
11 72 50 61 1 4 0 0.00 M M 11.1 25 300 M M 3 18 31 300
12 62 51 57 -3 8 0 0.00 M M 16.1 29 270 M M 6 18 37 260
13 65 53 59 -1 6 0 0.00 M M 20.2 32 270 M M 4 18 42 270
14 66 51 59 -1 6 0 0.00 M M 14.4 28 270 M M 2 18 39 270
15 66 51 59 -1 6 0 0.00 M M 17.2 36 270 M M 1 18 47 280
16 66 52 59 -1 6 0 0.00 M M 22.0 32 280 M M 2 8 42 270
17 73 50 62 2 3 0 0.00 M M 16.5 29 350 M M 2 8 37 350
18 80 56 68 8 0 3 0.00 M M 16.9 31 30 M M 0 8 38 360
19 82 54 68 8 0 3 0.00 M M 9.9 26 270 M M 0 8 31 280
20 73 53 63 3 2 0 0.00 M M 11.0 21 310 M M 2 18 27 310
21 70 51 61 1 4 0 0.00 M M 13.1 29 290 M M 2 18 35 290
22 69 50 60 0 5 0 0.00 M M 8.9 23 300 M M 3 18 29 300
23 69 54 62 1 3 0 0.00 M M 10.4 18 200 M M 3 8 24 210
24 71 55 63 2 2 0 0.00 M M 10.4 22 240 M M 4 28 270
25 66 55 61 0 4 0 0.00 M M 12.6 25 280 M M 8 35 250
26 64 53 59 -2 6 0 T M M 22.4 36 290 M M 4 18 46 280
27 70 51 61 0 4 0 0.00 M M 9.2 23 270 M M 5 18 31 260
28 67 54 61 0 4 0 0.20 M M 11.4 24 280 M M 8 18 30 300
29 63 54 59 -2 6 0 T M M 12.5 18 260 M M 8 18 25 280
================================================================================
SM 1949 1532 140 6 0.31 M 388.3 M 140
================================================================================
AV 67.2 52.8 13.4 FASTST M M 5 MAX(MPH)
MISC ----> # 36 270 47 280
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2
STATION: SAN FRANCISCO AIRPORT
MONTH: MAY
YEAR: 2026
LATITUDE: 37 37 N
LONGITUDE: 122 23 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 60.0 TOTAL FOR MONTH: 0.31 1 = FOG OR MIST
DPTR FM NORMAL: 0.1 DPTR FM NORMAL: -0.15 2 = FOG REDUCING VISIBILITY
HIGHEST: 82 ON 19 GRTST 24HR 0.20 ON 28-28 TO 1/4 MILE OR LESS
LOWEST: 50 ON 22,17 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: M 5 = HAIL
GRTST 24HR M ON M 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: M ON M 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: 4
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 1
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. 140 CLEAR (SCALE 0-3) 10
DPTR FM NORMAL -20 PTCLDY (SCALE 4-7) 17
TOTAL FM JUL 1 1761 CLOUDY (SCALE 8-10) 2
DPTR FM NORMAL -608
[CDD (BASE 65) ]
TOTAL THIS MO. 6
DPTR FM NORMAL 6 [PRESSURE DATA]
TOTAL FM JAN 1 43 HIGHEST SLP M ON M
DPTR FM NORMAL 37 LOWEST SLP 29.75 ON 27
[REMARKS]