Climatological Report (Monthly)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
275
CXUS51 KGYX 020209
CLMPWM
PWMCLMPWM 000
TTAA00 GYX 020205
CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
1005 PM EDT WED OCT 01 2025
...................................
...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1941 TO 2025 (FOR TEMPERATURE)
CLIMATE RECORD PERIOD: 1871 TO 2025 (FOR PRECIPITATION)
CLIMATE RECORD PERIOD: 1882 TO 2025 (FOR SNOWFALL)
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 95 09/11/1983
09/07/1945
LOW 23 09/30/1941
HIGHEST 85 09/28 86 -1 83 09/17
LOWEST 39 09/21 37 2 43 09/11
AVG. MAXIMUM 72.9 71.1 1.8 72.3
AVG. MINIMUM 52.1 52.1 -0.0 51.9
MEAN 62.5 61.6 0.9 62.1
DAYS MAX >= 90 0 0.5 -0.5 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.1 -0.1 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 10.84 2008
MINIMUM 0.30 1948
TOTALS 1.88 3.77 -1.89 1.93
DAILY AVG. 0.06 0.13 -0.07 0.06
DAYS >= .01 6 9.3 -3.3 4
DAYS >= .10 3 5.3 -2.3 2
DAYS >= .50 1 2.3 -1.3 1
DAYS >= 1.00 0 1.0 -1.0 1
GREATEST
24 HR. TOTAL 0.97 09/25 TO 09/26
SNOWFALL (INCHES)
RECORDS
TOTAL T 1992
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0 0.0
SNOWDEPTH AVG. 0
DAYS >= TRACE 0 0.0 0.0
DAYS >= 1.0 0 0.0 0.0
GREATEST
SNOW DEPTH 0
24 HR TOTAL 0.0
DEGREE DAYS
HEATING TOTAL 95 145 -50 100
SINCE 7/1 126 173 -47 118
COOLING TOTAL 28 43 -15 21
SINCE 1/1 434 444 -10 517
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WIND (MPH)
AVERAGE WIND SPEED 5.3
HIGHEST WIND SPEED/DIRECTION 20/090 DATE 09/24
HIGHEST GUST SPEED/DIRECTION 31/170 DATE 09/06
SKY COVER
AVERAGE SKY COVER 0.36
AVERAGE RH (PERCENT) 75
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 HEAVY RAIN 2
RAIN 4 LIGHT RAIN 6
FREEZING RAIN 0 LT FREEZING RAIN 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 FOG 13
FOG W/VIS <= 1/4 MILE 3 HAZE 1
- 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 SEPTEMBER 2025...
DATE RECORD PREVIOUS
SEP 7 6 - LOWEST TEMPERATURE RANGE - 7 IN 2011 AND 1999
SEP 28 85 - WARMEST HIGH TEMPERATURE - 82 IN 1948
$$