Climatological Report (Monthly)
Issued by NWS Portland, ME

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CXUX51 KGYX 031425
CLMGYX

PWMCLMGYX 000
TTAA00 GYX 011821

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
221 PM EDT SUN OCT 01 2023

...................................

...THE GRAY ME CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             96   09/09/2002
 LOW              31   09/29/2000
HIGHEST           88   09/05         87       1       82
LOWEST            46   09/26         39       7       38
                       09/27
                       09/28
AVG. MAXIMUM    72.3               70.4     1.9     68.7
AVG. MINIMUM    56.3               51.5     4.8     51.9
MEAN            64.3               60.9     3.4     60.3
DAYS MAX >= 90     0                0.4    -0.4        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       12.55   2008
 MINIMUM        0.78   2019
TOTALS          3.73               4.32   -0.59     6.17
DAILY AVG.      0.12               0.14   -0.02     0.21
DAYS >= .01        9                9.8    -0.8       12
DAYS >= .10        6                5.9     0.1        9
DAYS >= .50        3                2.7     0.3        5
DAYS >= 1.00       1                1.0     0.0        3
GREATEST
 24 HR. TOTAL   2.27   09/18 TO 09/19

SNOWFALL (INCHES)
RECORDS
 TOTAL
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        0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0
 24 HR TOTAL     0.0

DEGREE DAYS
HEATING TOTAL     94                158     -64      165
 SINCE 7/1       106                194     -88      168
COOLING TOTAL     81                 36      45       33
 SINCE 1/1       428                393      35      583
..............................................................



-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

AFTER A WET SUMMER IN THE GRAY AREA, A BROAD AREA OF HIGH PRESSURE
BUILT INTO THE NORTHEAST DURING THE FIRST WEEK OF SEPTEMBER. THIS
HIGH PRESSURE BROUGHT THE DRIEST STRETCH OF WEATHER THE GRAY AREA
HAD SEEN SINCE THE END OF MAY. ALONG WITH DRY WEATHER, TEMPERATURES
CLIMBED WELL ABOVE NORMAL DURING THE FIRST WEEK OF SEPTEMBER. IT WAS
ALSO DURING THIS TIME THAT TROPICAL ACTIVITY WAS INCREASING IN THE
ATLANTIC BASIN. SOME FRONTAL SYSTEMS BROUGHT A RETURN TO WET WEATHER
DURING THE SECOND WEEK OF SEPTEMBER BEFORE ATTENTION TURNED TO
HURRICANE LEE THAT WAS TRACKING NORTHWARD THROUGH THE WESTERN
ATLANTIC. LEE MOVED INTO THE EASTERN GULF OF MAINE ON THE 15TH AS A
CATEGORY 1 HURRICANE AND TRANSITIONED TO A POST TROPICAL SYSTEM ON
THE 16TH AS IT TRACKED NORTHEASTWARD THROUGH THE BAY OF FUNDY. THIS
SYSTEM BROUGHT HIGH SURF AND RIP CURRENTS TO AREA BEACHES ALONG WITH
A PEAK WIND GUST TO 48 MPH ON THE 16TH WHILE THE BULK OF RAIN MISSED
THE GRAY AREA TO THE EAST. A MORE SIGNIFICANT RAIN EVENT OCCURRED ON
THE 18TH INTO THE 19TH WHEN LOW PRESSURE TRACKED ACROSS CAPE COD
INTO THE GULF OF MAINE BRINGING 2.27 INCHES OF RAIN. HIGH PRESSURE
BUILT INTO THE NORTHEAST DURING THE THIRD WEEK OF SEPTEMBER AND
DOMINATED THE WEATHER PATTERN THROUGH THE END OF THE MONTH.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 64.3 DEGREES, WHICH WAS
3.4 DEGREES ABOVE NORMAL AND TIED FOR THE 4TH WARMEST SEPTEMBER ON
RECORD. THE WARMEST WAS IN 2015 WHEN THE AVERAGE TEMPERATURE WAS
65.4 DEGREES. THE COOLEST WAS 58.8 DEGREES IN 2000. THE FOLLOWING
TABLE LISTS THE WARMEST SEPTEMBERS ON RECORD AT GRAY.

WARMEST AVERAGE TEMPERATURE IN SEPTEMBER (SINCE 1996)...
RANK  TEMP  YEAR
1     65.4  2015
2     65.3  2017
3     64.6  2002
4     64.3  2023  <===
5     64.3  2016

A TOTAL OF 3.73 INCHES OF PRECIPITATION FELL, WHICH WAS 0.59 BELOW
NORMAL. THE HEAVIEST PRECIPITATION OCCURRED ON THE 18TH INTO THE
19TH WHEN 2.27 INCHES OF RAIN FELL. THE DRIEST SEPTEMBER WAS IN 2019
WHEN ONLY 0.78 INCHES OF PRECIPITATION FELL. THE WETTEST WAS 12.56
INCHES IN 2008.

$$

DS


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