Climatological Report (Seasonal) Issued by NWS Portland, ME
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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
1132 PM EST FRI DEC 01 2023
...................................
...THE PORTLAND ME CLIMATE SUMMARY FOR THE FALL SEASON, FROM
9/1/2023 TO 11/30/2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1941 TO 2023 (FOR TEMPERATURES)
CLIMATE RECORD PERIOD: 1871 TO 2023 (FOR PRECIPITATION)
CLIMATE RECORD PERIOD: 1882 TO 2023 (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 3 11/24/1989
HIGHEST 88 09/05 86 2 81 09/10
09/11
LOWEST 17 11/21 16 1 18 11/21
AVG. MAXIMUM 60.5 59.7 0.8 60.9
AVG. MINIMUM 43.2 41.6 1.6 42.1
MEAN 51.9 50.6 1.3 51.5
DAYS MAX >= 90 0 0.5 -0.5 0
DAYS MAX <= 32 0 1.1 -1.1 0
DAYS MIN <= 32 25 24.8 0.2 21
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 24.18 2005
MINIMUM 4.88 1915
TOTALS 11.04 13.27 -2.23 17.27
DAILY AVG. 0.12 0.15 -0.03 0.19
DAYS >= .01 24 30.9 -6.9 30
DAYS >= .10 15 18.9 -3.9 18
DAYS >= .50 7 8.1 -1.1 13
DAYS >= 1.00 3 3.6 -0.6 7
GREATEST
24 HR. TOTAL 3.24 09/18 TO 09/19
SNOWFALL (INCHES)
RECORDS
TOTAL 24.3 1921
TOTALS 0.2 2.5 -2.3 T
SINCE 7/1 0.2 2.5 -2.3 T
SNOWDEPTH AVG. 0
DAYS >= TRACE 3 1.6 1.4 3
DAYS >= 1.0 0 0.8 -0.8 0
GREATEST
SNOW DEPTH 0
24 HR TOTAL 0.2 11/09
DEGREE DAYS
HEATING TOTAL 1250 1353 -103 1235
SINCE 7/1 1269 1377 -108 1236
COOLING TOTAL 81 45 36 28
SINCE 1/1 423 446 -23 542
................................................................
WIND (MPH)
AVERAGE WIND SPEED 6.2
HIGHEST WIND SPEED/DIRECTION 36/150 DATE 11/27
HIGHEST GUST SPEED/DIRECTION 48/140 DATE 11/27
SKY COVER
AVERAGE SKY COVER 0.52
AVERAGE RH (PERCENT) 76
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 HEAVY RAIN 7
RAIN 12 LIGHT RAIN 30
FREEZING RAIN 0 LT FREEZING RAIN 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 3 FOG 40
FOG W/VIS <= 1/4 MILE 7 HAZE 6
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
THE AVERAGE TEMPERATURE FOR THE FALL SEASON WAS 51.9 DEGREES, WHICH
WAS 1.3 DEGREES ABOVE NORMAL AND TIED WITH 2016 AS THE 5TH WARMEST
FALL ON RECORD. THE WARMEST FALL ON RECORD WAS IN 2017 AND 2011 WHEN
THE AVERAGE TEMPERATURE WAS 53.0 DEGREES. THE COOLEST WAS 45.6
DEGREES IN 1976. THE FOLLOWING TABLE LISTS THE WARMEST FALLS ON
RECORD AT PORTLAND.
WARMEST AVERAGE TEMPERATURE IN FALL (SINCE 1941)...
RANK TEMP YEAR
1 53.0 2017
53.0 2011
3 52.3 2021
52.3 2015
5 51.9 2023 <===
51.9 2016
6 51.7 2020
7 51.5 2022
51.5 2005
51.5 1961
THE FIRST FREEZE OF THIS FALL OCCURRED ON OCTOBER 31ST WHEN THE LOW
TEMPERATURE REACHED 31 DEGREES. THIS WAS 16 DAYS LATER THAN THE
NORMAL FIRST FREEZE, WHICH OCCURS ON OCTOBER 15TH.
A TOTAL OF 11.04 INCHES OF PRECIPITATION FELL, WHICH WAS 2.23 INCHES
BELOW NORMAL. THE DRIEST FALL ON RECORD WAS IN 1915 WHEN ONLY 4.88
INCHES FELL. THE WETTEST WAS 24.18 INCHES IN 2005.
ONLY 0.2 INCHES OF SNOW WAS MEASURED THIS FALL, WHICH WAS 2.3 INCHES
BELOW NORMAL. SNOW IN FALL CAN BE HIT OR MISS. IN 143 YEARS OF
RECORDS THERE HAVE BEEN 4 YEARS WITH NO SNOW IN FALL, MOST RECENTLY
IN 2006. THE SNOWIEST FALL WAS 24.3 INCHES IN 1921.
$$
DS