WFO Monthly/Daily Climate Data
Issued by NWS
Issued by NWS
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591
CXUS56 KMTR 301000
CF6HWD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: HAYWARD AIRPORT
MONTH: DECEMBER
YEAR: 2025
LATITUDE: 37 39 N
LONGITUDE: 122 7 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 55 41 48 -4 17 0 0.00 M M 7.4 15 70 M M 3 18 20 110
2 61 43 52 0 13 0 0.00 M M 3.0 10 290 M M 0 18 14 20
3 66 39 53 1 12 0 0.00 M M 4.2 16 50 M M 0 1 20 40
4 57 40 49 -3 16 0 0.00 M M 6.1 16 50 M M 0 8 22 50
5 59 41 50 -2 15 0 0.00 M M 4.6 9 280 M M 0 18 12 270
6 54 43 49 -3 16 0 0.00 M M 7.8 15 40 M M 3 18 19 50
7 54 42 48 -4 17 0 0.00 M M 5.8 12 40 M M 3 18 18 50
8 54 42 48 -4 17 0 0.00 M M 5.5 14 40 M M 2 18 18 40
9 54 41 48 -4 17 0 0.00 M M 6.4 12 50 M M 1 18 16 40
10 59 40 50 -1 15 0 0.00 M M 5.1 10 30 M M 0 18 15 50
11 55 43 49 -2 16 0 0.00 M M 5.4 9 40 M M 1 18 M M
12 57 41 49 -2 16 0 0.00 M M M M M M M M M M
13 55 39 47 -4 18 0 0.00 M M 4.9 12 40 M M 1 16 50
14 52 41 47 -4 18 0 0.00 M M 4.6 10 70 M M 5 18 13 60
15 53 40 47 -4 18 0 0.00 M M 3.3 9 300 M M 3 18 13 290
16 59 45 52 1 13 0 0.00 M M 3.5 15 50 M M 1 19 50
17 66 49 58 7 7 0 0.21 M M 4.0 13 300 M M 7 1 17 290
18 58 50 54 3 11 0 0.00 M M 2.4 7 140 M M 7 128 12 230
19 64 53 59 8 6 0 0.34 M M 5.7 13 140 M M 9 1 16 160
20 63 59 61 10 4 0 0.06 M M 2.0 10 130 M M 10 1 12 130
21 65 61 63 12 2 0 0.01 M M 9.5 20 190 M M 10 1 27 190
22 64 58 61 10 4 0 0.52 M M 6.6 16 140 M M 7 1 22 150
23 65 55 60 9 5 0 T M M 9.5 25 150 M M 9 39 150
24 64 55 60 9 5 0 0.95 M M 11.2 29 190 M M 7 1 46 180
25 61 53 57 6 8 0 0.99 M M 13.1 32 140 M M 9 1 45 170
26 60 46 53 2 12 0 0.08 M M 12.4 21 190 M M 6 30 200
27 56 43 50 -1 15 0 0.00 M M 4.1 14 340 M M 3 16 320
28 56 39 48 -3 17 0 0.00 M M 3.5 9 350 M M 0 12 360
29 64 40 52 1 13 0 0.00 M M 6.3 12 80 M M 0 18 40
================================================================================
SM 1710 1322 363 0 3.16 M 167.9 M 107
================================================================================
AV 59.0 45.6 6.0 FASTST M M 4 MAX(MPH)
MISC ----> 32 140 46 180
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2
STATION: HAYWARD AIRPORT
MONTH: DECEMBER
YEAR: 2025
LATITUDE: 37 39 N
LONGITUDE: 122 7 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 52.3 TOTAL FOR MONTH: 3.16 1 = FOG OR MIST
DPTR FM NORMAL: 1.0 DPTR FM NORMAL: 0.15 2 = FOG REDUCING VISIBILITY
HIGHEST: 66 ON 17, 3 GRTST 24HR 1.14 ON 24-25 TO 1/4 MILE OR LESS
LOWEST: 39 ON 28,13 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: 8
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 5
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 3
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
TOTAL THIS MO. 363 CLEAR (SCALE 0-3) 15
DPTR FM NORMAL -34 PTCLDY (SCALE 4-7) 8
TOTAL FM JUL 1 691 CLOUDY (SCALE 8-10) 6
DPTR FM NORMAL -131
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 295 HIGHEST SLP M ON M
DPTR FM NORMAL -73 LOWEST SLP 29.51 ON 24
[REMARKS]