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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
909 PM EDT THU OCT 01 2026
...............................
..THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1941 TO 2026 (FOR TEMPERATURE)
CLIMATE RECORD PERIOD: 1871 TO 2026 (FOR PRECIPITATION)
CLIMATE RECORD PERIOD: 1882 TO 2026 (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 09/10 86 -1 85 09/28
LOWEST 40 09/20 37 3 39 09/21
AVG. MAXIMUM 69.4 71.1 -1.7 72.9
AVG. MINIMUM 52.0 52.1 -0.1 52.1
MEAN 60.7 61.6 -0.9 62.5
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 5.12 3.77 1.35 1.88
DAILY AVG. 0.17 0.13 0.04 0.06
DAYS >= .01 15 9.3 5.7 6
DAYS >= .10 7 5.3 1.7 3
DAYS >= .50 3 2.3 0.7 1
DAYS >= 1.00 2 1.0 1.0 0
GREATEST
24 HR. TOTAL 2.24 09/27 TO 09/28
SNOWFALL (INCHES)
RECORDS
TOTAL T 1992
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 T 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 146 145 1 95
SINCE 7/1 152 173 -21 126
COOLING TOTAL 24 43 -19 28
SINCE 1/1 518 444 74 434
............................................................
WIND (MPH)
AVERAGE WIND SPEED 6.8
HIGHEST WIND SPEED/DIRECTION 26/350 DATE 09/14
HIGHEST GUST SPEED/DIRECTION 39/060 DATE 09/26
SKY COVER
AVERAGE SKY COVER 0.56
AVERAGE RH (PERCENT) 74
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 HEAVY RAIN 3
RAIN 5 LIGHT RAIN 15
FREEZING RAIN 0 LT FREEZING RAIN 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 FOG 18
FOG W/VIS <= 1/4 MILE 1 HAZE 2
- 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 2026
DATE RECORD PREVIOUS
SEP 27 4 - SMALLEST TEMPERATURE RANGE - 5 IN 2010 AND 1994
SEP 27 1.88 - GREATEST PRECIPITATION - 1.51 IN 1993
SEP 28 2 - SMALLEST TEMPERATURE RANGE - 4 IN 2008 AND 2001
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