WFO Monthly/Daily Climate Data
Issued by NWS Portland, ME

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129
CXUS51 KGYX 241000
CF6PWM
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   PORTLAND ME
                                          MONTH:     DECEMBER
                                          YEAR:      2025
                                          LATITUDE:   43 39 N
                                          LONGITUDE:  70 19 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  39  22  31  -4  34   0 0.00  0.0    0  8.3 23 320   M    M   2        33 300
 2  27  21  24 -10  41   0 0.57  4.4    T  7.8 17  10   M    M   9 1      27 360
 3  36  23  30  -4  35   0 0.01  0.2    3  6.9 21 360   M    M   5 1      28 360
 4  38   9  24 -10  41   0    T    T    3 12.7 32 310   M    M   7        44 310
 5  22   2  12 -22  53   0 0.00  0.0    2  4.6 17 300   M    M   2        22 310
 6  27  11  19 -14  46   0 0.02    T    2  1.9  6 280   M    M   9 1       7  60
 7  34  15  25  -8  40   0 0.00  0.0    2  4.0 12 290   M    M   6 1      15 310
 8  31   5  18 -15  47   0 0.00  0.0    2 10.4 21 330   M    M   2        33 290
 9  25  -3  11 -21  54   0    T  0.1    2  3.6 14 210   M    M   4        22 190
10  36  24  30  -2  35   0 0.11    T    2  3.1  9 230   M    M  10 148    15 200
11  36  19  28  -4  37   0 0.00  0.0    1 15.3 29 290   M    M   3        41 300
12  29  18  24  -7  41   0 0.00  0.0    3 14.2 29 280   M    M   3        39 280
13  33  12  23  -8  42   0 0.00  0.0    1  4.6 12 220   M    M   7        18 230
14  30  15  23  -8  42   0 0.20  2.2    1  9.3 21 340   M    M  10 12     28 350
15  23   9  16 -14  49   0 0.00  0.0    3 10.0 21 320   M    M   2        30 340
16  34  18  26  -4  39   0 0.00  0.0    3  5.3 13 220   M    M   3 8      17 220
17  41  26  34   4  31   0 0.00  0.0    3  8.6 18 220   M    M   5 8      27 210
18  42  21  32   2  33   0 0.00  0.0    2  6.0 17 290   M    M   2        26 190
19  53  35  44  15  21   0 0.52  0.0    T 13.2 33 170   M    M   9 12     56 170
20  38  28  33   4  32   0 0.00  0.0    0 10.0 30 260   M    M   3        44 290
21  45  27  36   7  29   0 0.00  0.0    0 12.8 30 280   M    M   5        46 290
22  27  18  23  -6  42   0 0.00  0.0    0  8.8 21 310   M    M   1        30 310
23  35  21  28   0  37   0 0.34  1.2    0  2.6  9 100   M    M   9 1      13  90
================================================================================
SM  781  396       901   0  1.77  8.1    184.0          M      118
================================================================================
AV 34.0 17.2                               8.0 FASTST   M    M   5    MAX(MPH)
                                 MISC ---->    33 170                 56 170
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:   PORTLAND ME
                                          MONTH:     DECEMBER
                                          YEAR:      2025
                                          LATITUDE:   43 39 N
                                          LONGITUDE:  70 19 W

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

AVERAGE MONTHLY: 25.6   TOTAL FOR MONTH:   1.77    1 = FOG OR MIST
DPTR FM NORMAL:  -5.8   DPTR FM NORMAL:   -1.64    2 = FOG REDUCING VISIBILITY
HIGHEST:    53 ON 19    GRTST 24HR  0.58 ON  2- 3      TO 1/4 MILE OR LESS
LOWEST:     -3 ON  9                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   8.1 INCHES  5 = HAIL
                        GRTST 24HR   4.4 ON  2- 2  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   3 ON 17,16  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:   9    0.01 INCH OR MORE:   7
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   5
MIN 32 OR BELOW:  22    0.50 INCH OR MORE:   2
MIN  0 OR BELOW:   1    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   901    CLEAR  (SCALE 0-3)   8
DPTR FM NORMAL   131    PTCLDY (SCALE 4-7)   9
TOTAL FM JUL 1  2207    CLOUDY (SCALE 8-10)  6
DPTR FM NORMAL    59

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   440    HIGHEST SLP M ON M
DPTR FM NORMAL    -6    LOWEST  SLP 29.07 ON 19

[REMARKS]