Climatological Report (Monthly)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
921
CXUS51 KGYX 030053
CLMPWM
PWMCLMPWM 000
TTAA00 GYX 021102
CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
800 PM EST THU JAN 02 2025
...................................
...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1941 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 71 12/06/2001
12/07/1998
LOW -21 12/31/1963
HIGHEST 56 12/11 56 0 59 12/18
12/17
LOWEST 5 12/23 2 3 13 12/07
AVG. MAXIMUM 37.4 38.3 -0.9 42.4
AVG. MINIMUM 21.5 22.4 -0.9 28.1
MEAN 29.5 30.3 -0.8 35.2
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 10 8.4 1.6 4
DAYS MIN <= 32 29 26.7 2.3 20
DAYS MIN <= 0 0 0.4 -0.4 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 9.69 1969
MINIMUM 0.93 1874
TOTALS 5.18 4.50 0.68 6.67
DAILY AVG. 0.17 0.15 0.02 0.22
DAYS >= .01 13 12.3 0.7 12
DAYS >= .10 9 7.9 1.1 8
DAYS >= .50 3 2.9 0.1 5
DAYS >= 1.00 1 1.3 -0.3 3
GREATEST
24 HR. TOTAL 2.34 12/11 TO 12/12
SNOWFALL (INCHES)
RECORDS
TOTAL 54.8 1970
TOTALS 6.0 14.6 -8.6 0.5
SINCE 7/1 6.0 17.1 -11.1 0.7
SNOWDEPTH AVG. 0
DAYS >= TRACE 8 6.0 2.0
DAYS >= 1.0 2 3.3 -1.3
GREATEST
SNOW DEPTH 4 12/10
24 HR TOTAL 2.8 12/09 TO 12/10
DEGREE DAYS
HEATING TOTAL 1093 1074 19 913
SINCE 7/1 2288 2451 -163 2182
COOLING TOTAL 0 0 0 0
SINCE 1/1 522 446 76 423
................................................................
WIND (MPH)
AVERAGE WIND SPEED 6.8
HIGHEST WIND SPEED/DIRECTION 26/300 DATE 12/06
26/180 12/11
HIGHEST GUST SPEED/DIRECTION 43/150 DATE 12/11
SKY COVER
AVERAGE SKY COVER 0.54
AVERAGE RH (PERCENT) 73
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 HEAVY RAIN 3
RAIN 7 LIGHT RAIN 10
FREEZING RAIN 1 LT FREEZING RAIN 2
HEAVY SNOW 0 SNOW 2
LIGHT SNOW 8 FOG 16
FOG W/VIS <= 1/4 MILE 3 HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
...THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN DECEMBER 2024...
DATE RECORD PREVIOUS
DEC 11 2.33 - GREATEST DAILY PRECIPITATION - 1.99 IN 2023
DEC 17 42 - WARMEST LOW TEMPERATURE - 42 IN 2000 (TIED)
DEC 17 49 - WARMEST AVERAGE TEMPERATURE - 49 IN 2000 (TIED)
$$
HAT