WFO Monthly/Daily Climate Data
Issued by NWS

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918
CXUS56 KMTR 281000
CF6CCR
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   CONCORD AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2025
                                          LATITUDE:   37 58 N
                                          LONGITUDE: 122  3 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  51  41  46  -5  19   0 0.00    M    M  4.8 12  80   M    M   6 18     19  80
 2  59  39  49  -2  16   0 0.00    M    M  2.8  9  30   M    M   4 18     15  40
 3  65  40  53   2  12   0 0.00    M    M  3.9 16  30   M    M   2 18     27  20
 4  53  38  46  -5  19   0 0.00    M    M  4.2 10  60   M    M   5 128    14  30
 5  48  38  43  -7  22   0 0.00    M    M  4.1 12 350   M    M   8 128    14 360
 6  46  42  44  -6  21   0 0.00    M    M  4.6  9  20   M    M  10 1      14  60
 7  48  42  45  -5  20   0 0.00    M    M  5.2  9  70   M    M  10 18     14  60
 8  51  43  47  -3  18   0 0.00    M    M  5.8 15 360   M    M   8 18     19 360
 9  48  43  46  -4  19   0 0.00    M    M  6.3 12  30   M    M  10 18     17  40
10  49  43  46  -4  19   0 0.00    M    M  6.8 13 360   M    M  10 18     19  30
11  49  42  46  -4  19   0    T    M    M  7.4 14  10   M    M   9 18     19  10
12  46  40  43  -7  22   0 0.00    M    M  6.5 13  20   M    M   9 18     20  30
13  47  38  43  -6  22   0 0.00    M    M  4.6 12  30   M    M   9 18     17  60
14  42  39  41  -8  24   0 0.00    M    M  1.8  7  50   M    M   9 12     10  10
15  48  39  44  -5  21   0 0.00    M    M  4.2 10 360   M    M   9 18     17 350
16  55  42  49   0  16   0    T    M    M  4.3 13 330   M    M   6 18     16  30
17  67  49  58   9   7   0 0.02    M    M  5.4 16 190   M    M   8 18     21 220
18  61  52  57   8   8   0 0.00    M    M  1.3  9 320   M    M   9 18     11 180
19  65  51  58   9   7   0    T    M    M  7.8 22 220   M    M  10 1      29 220
20  60  53  57   8   8   0    T    M    M  2.5  9 310   M    M  10 1      12 200
21  63  55  59  10   6   0    T    M    M 11.9 22 180   M    M  10 18     29 180
22  66  57  62  13   3   0 0.34    M    M  5.9 18 180   M    M   9 1      26 330
23  65  52  59  10   6   0    T    M    M  4.4 25 160   M    M   8 12     42 170
24  66  55  61  12   4   0 0.40    M    M  9.2 25 170   M    M   9 1      38 170
25  63  53  58   9   7   0 0.66    M    M 13.1 35 150   M    M   8 1      53 180
26  60  50  55   6  10   0    T    M    M 12.1 20 220   M    M   5        43 200
27  61  41  51   2  14   0 0.00    M    M  3.5  9  60   M    M   6 1       M   M
================================================================================
SM 1502 1217       389   0  1.42    M    154.3          M      216
================================================================================
AV 55.6 45.1                               5.7 FASTST   M    M   8    MAX(MPH)
                                 MISC ---->    35 150                 53 180
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

                                          STATION:   CONCORD AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2025
                                          LATITUDE:   37 58 N
                                          LONGITUDE: 122  3 W

[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 50.4   TOTAL FOR MONTH:   1.42    1 = FOG OR MIST
DPTR FM NORMAL:   0.8   DPTR FM NORMAL:   -1.35    2 = FOG REDUCING VISIBILITY
HIGHEST:    67 ON 17    GRTST 24HR  0.76 ON 24-25      TO 1/4 MILE OR LESS
LOWEST:     38 ON 13, 5                             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:   3
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   389    CLEAR  (SCALE 0-3)   1
DPTR FM NORMAL   -28    PTCLDY (SCALE 4-7)  10
TOTAL FM JUL 1   686    CLOUDY (SCALE 8-10) 16
DPTR FM NORMAL   -84

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1  1035    HIGHEST SLP M ON M
DPTR FM NORMAL   -42    LOWEST  SLP 29.44 ON 24

[REMARKS]