Climatological Report (Monthly)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
620
CXUS51 KGYX 020139
CLMPWM
PWMCLMPWM 000
TTAA00 GYX 020110
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
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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
$$