WFO Monthly/Daily Climate Data
Issued by NWS
Issued by NWS
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664
CXUS56 KMTR 271000
CF6APC
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: NAPA AIRPORT
MONTH: DECEMBER
YEAR: 2025
LATITUDE: 38 13 N
LONGITUDE: 122 17 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 53 38 46 -3 19 0 T M M 10.6 21 90 M M 2 1 29 90
2 61 36 49 0 16 0 0.00 M M 4.8 15 90 M M 1 1 22 100
3 67 36 52 3 13 0 0.00 M M 3.9 15 30 M M 2 12 20 340
4 52 37 45 -3 20 0 0.00 M M 8.8 21 90 M M 1 18 29 90
5 47 37 42 -6 23 0 0.00 M M 10.4 17 100 M M 2 18 23 90
6 46 38 42 -6 23 0 0.00 M M 7.6 15 100 M M 9 1 22 90
7 47 42 45 -3 20 0 0.00 M M 10.2 15 90 M M 10 1 22 80
8 48 43 46 -2 19 0 0.00 M M 9.9 17 120 M M 8 1 22 90
9 48 42 45 -3 20 0 0.00 M M 8.9 16 90 M M 9 1 23 100
10 49 43 46 -2 19 0 0.00 M M 12.0 18 90 M M 9 1 25 90
11 48 43 46 -2 19 0 0.00 M M 13.5 21 90 M M 6 1 28 90
12 49 39 44 -4 21 0 0.00 M M 12.9 22 80 M M 6 1 33 80
13 47 38 43 -4 22 0 0.00 M M 8.1 17 90 M M 7 12 25 110
14 47 38 43 -4 22 0 0.00 M M 5.3 15 110 M M 9 1 20 120
15 49 40 45 -2 20 0 0.00 M M 7.4 17 100 M M 7 1 23 90
16 55 38 47 0 18 0 0.00 M M 8.5 18 90 M M 6 18 27 90
17 62 42 52 5 13 0 0.18 M M 6.8 16 190 M M 7 12 20 190
18 58 47 53 6 12 0 T M M 2.0 7 220 M M 9 12 10 230
19 61 53 57 10 8 0 0.24 M M 6.9 15 200 M M 10 1 20 210
20 60 54 57 10 8 0 0.15 M M 3.6 12 90 M M 10 1 15 90
21 62 58 60 13 5 0 0.33 M M 12.8 18 180 M M 10 1 27 170
22 60 57 59 12 6 0 0.33 M M 3.6 14 180 M M 10 1 20 170
23 63 54 59 12 6 0 0.01 M M 5.0 20 160 M M 9 1 32 150
24 64 53 59 12 6 0 1.07 M M 9.9 25 180 M M 8 1 40 170
25 60 50 55 8 10 0 0.94 M M 15.4 32 140 M M 8 18 44 140
26 59 43 51 4 14 0 0.18 M M 10.8 30 200 M M 6 1 42 200
================================================================================
SM 1422 1139 402 0 3.43 M 219.6 M 181
================================================================================
AV 54.7 43.8 8.4 FASTST M M 7 MAX(MPH)
MISC ----> 32 140 44 140
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2
STATION: NAPA AIRPORT
MONTH: DECEMBER
YEAR: 2025
LATITUDE: 38 13 N
LONGITUDE: 122 17 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 49.3 TOTAL FOR MONTH: 3.43 1 = FOG OR MIST
DPTR FM NORMAL: 1.7 DPTR FM NORMAL: 0.28 2 = FOG REDUCING VISIBILITY
HIGHEST: 67 ON 3 GRTST 24HR 1.24 ON 24-25 TO 1/4 MILE OR LESS
LOWEST: 36 ON 3, 2 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: 9
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 8
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 2
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 1
[HDD (BASE 65) ]
TOTAL THIS MO. 402 CLEAR (SCALE 0-3) 5
DPTR FM NORMAL -51 PTCLDY (SCALE 4-7) 8
TOTAL FM JUL 1 877 CLOUDY (SCALE 8-10) 13
DPTR FM NORMAL -179
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 211 HIGHEST SLP M ON M
DPTR FM NORMAL -103 LOWEST SLP 29.46 ON 24
[REMARKS]