WFO Monthly/Daily Climate Data
Issued by NWS Boston, MA

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

                                          STATION:   BOSTON MA
                                          MONTH:     DECEMBER
                                          YEAR:      2025
                                          LATITUDE:   42 22 N
                                          LONGITUDE:  71  2 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  44  28  36  -4  29   0    T  0.0    M 12.1 23 290   M    M   4        36 300
 2  37  28  33  -7  32   0 0.67    T    M 10.8 26  10   M    M   9 1      35  20
 3  38  32  35  -4  30   0 0.03    T    M 10.6 20 320   M    M   7 1      29 310
 4  40  18  29 -10  36   0    T    T    M 16.6 39 280   M    M   7        54 280
 5  29  12  21 -18  44   0 0.00  0.0    M  8.3 23 320   M    M   4        32 310
 6  39  28  34  -4  31   0 0.01    T    M  5.9 15 260   M    M   7 1      23 240
 7  41  31  36  -2  29   0 0.00  0.0    M  7.6 17 240   M    M   7        26 250
 8  36  17  27 -11  38   0    T    T    M 14.8 26 300   M    M   4        39 290
 9  32  14  23 -15  42   0    T    T    M  9.3 17 200   M    M   5        23 200
10  49  32  41   4  24   0 0.04  0.0    M 14.1 26 200   M    M   9        39 190
11  40  25  33  -4  32   0 0.00  0.0    M 20.9 36 270   M    M   3        49 280
12  36  22  29  -8  36   0 0.00  0.0    M 17.3 31 280   M    M   1        44 280
13  37  27  32  -4  33   0 0.00  0.0    M 10.6 16 220   M    M   7        31 250
14  35  18  27  -9  38   0 0.07  1.3    M 11.3 26 310   M    M  10 1      39 330
15  25  14  20 -16  45   0 0.00  0.0    M 16.1 25 300   M    M   4        36 290
16  36  23  30  -6  35   0 0.00  0.0    M  9.6 17 220   M    M   6        26 250
17  47  28  38   3  27   0 0.00  0.0    M 16.1 26 220   M    M   4        34 210
18  48  29  39   4  26   0 0.00  0.0    M  6.9 14 180   M    M   3        19 260
19  59  36  48  13  17   0 0.46  0.0    M 18.4 46 170   M    M  10 1      64 170
20  38  32  35   0  30   0 0.00  0.0    M 12.9 32 270   M    M   6        48 260
21  47  32  40   6  25   0 0.00  0.0    M 17.0 28 280   M    M   7        39 270
22  33  25  29  -5  36   0 0.00  0.0    M 11.4 23 300   M    M   3        34 300
23  38  30  34   0  31   0 0.20    T    M  6.7 12 150   M    M  10 1      15 210
================================================================================
SM  904  581       746   0  1.48  1.3    285.3          M      137
================================================================================
AV 39.3 25.3                              12.4 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->    46 170                 64 170
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:   BOSTON MA
                                          MONTH:     DECEMBER
                                          YEAR:      2025
                                          LATITUDE:   42 22 N
                                          LONGITUDE:  71  2 W

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

AVERAGE MONTHLY: 32.3   TOTAL FOR MONTH:   1.48    1 = FOG OR MIST
DPTR FM NORMAL:  -4.5   DPTR FM NORMAL:   -1.80    2 = FOG REDUCING VISIBILITY
HIGHEST:    59 ON 19    GRTST 24HR  0.70 ON  2- 3      TO 1/4 MILE OR LESS
LOWEST:     12 ON  5                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   1.3 INCHES  5 = HAIL
                        GRTST 24HR   1.3 ON 14-14  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:   3    0.01 INCH OR MORE:   7
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   3
MIN 32 OR BELOW:  22    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   746    CLEAR  (SCALE 0-3)   3
DPTR FM NORMAL    95    PTCLDY (SCALE 4-7)  15
TOTAL FM JUL 1  1683    CLOUDY (SCALE 8-10)  5
DPTR FM NORMAL    18

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   865    HIGHEST SLP M ON M
DPTR FM NORMAL    65    LOWEST  SLP 29.15 ON 19

[REMARKS]