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000
CXUX51 KGYX 042343
CLMGYX

PWMCLMGYX 000
TTAA00 GYX 020949

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
548 AM EDT FRI JUN 02 2023

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

...THE GRAY ME CLIMATE SUMMARY FOR THE MONTH OF MAY 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             95   05/18/2017
 LOW              31   05/10/2020
                       05/09/2020
                       05/01/2008
HIGHEST           90   05/28         86       4       88
LOWEST            33   05/18         35      -2       36
AVG. MAXIMUM    67.3               64.3     3.0     68.7
AVG. MINIMUM    44.6               44.0     0.6     46.9
MEAN            55.9               54.2     1.7     57.8
DAYS MAX >= 90     1                0.4     0.6        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.2    -0.2        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        8.54   2006
 MINIMUM        0.90   2018
TOTALS          4.88               3.56    1.32     1.08
DAILY AVG.      0.16               0.11    0.05     0.03
DAYS >= .01        9               13.6    -4.6        8
DAYS >= .10        6                8.1    -2.1        4
DAYS >= .50        3                2.7     0.3        0
DAYS >= 1.00       2                0.7     1.3        0
GREATEST
 24 HR. TOTAL   3.67   04/30 TO 05/01

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   2002
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1       81.2               84.0    -2.8     44.0
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

DEGREE DAYS
HEATING TOTAL    288                346     -58      242
 SINCE 7/1      6295               7060    -765     6630
COOLING TOTAL     14                  9       5       27
 SINCE 1/1        14                  9       5       27
..............................................................



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

&&

THE COOL, CLOUDY, AND DAMP PATTERN THAT DOMINATED THE SECOND HALF OF
APRIL PERSISTED INTO THE FIRST WEEK OF MAY. A SIGNIFICANT RAIN EVENT
THAT STARTED ON APRIL 30TH CONTINUED INTO MAY 1ST WHERE THE GRAY
AREA RECEIVED 3.87 INCHES OF RAIN WITH UPWARDS OF 5 TO 6 INCHES
FALLING ACROSS THE MOUNTAINS AND CENTRAL MAINE LEADING TO
SIGNIFICANT FLOODING. THE GRAY AREA WENT ON TO RECORD MEASURABLE
PRECIPITATION FOR THE NEXT FOUR DAYS OF THE MONTH WITH TEMPERATURES
AVERAGING BELOW NORMAL. THE BLOCKING PATTERN ASSOCIATED WITH THE
NEGATIVE PHASE OF THE NAO WAS RESPONSIBLE FOR THIS PROLONGED PERIOD
OF DREARY WEATHER, AND THIS PATTERN BROKE DOWN BY THE END OF THE
FIRST WEEK OF MAY. A PERIOD OF DRY WEATHER ENSUED, AND WITH THE
EXCEPTION OF A COUPLE COOL DAYS AND SEASONABLY COLD NIGHTS,
TEMPERATURES AVERAGED ABOVE NORMAL THROUGH THE MIDDLE OF THE MONTH.
TOWARDS THE END OF THIS DRY STRETCH OF WEATHER A COLD FRONT CROSSED
ON THE 17TH WITH A CANADIAN HIGH PRESSURE SYSTEM BUILDING IN BEHIND
THE FRONT. THIS HIGH ALLOWED FOR STRONG RADIATIONAL COOLING WITH THE
TEMPERATURE FALLING TO 33 DEGREES ON THE MORNING OF THE 18TH,
PRESERVING THE LAST FREEZE DATE OF APRIL 10TH. A COUPLE DAYS LATER A
COASTAL LOW PRESSURE SYSTEM MERGED WITH A COLD FRONT APPROACHING
FROM THE WEST BRINGING SIGNIFICANT RAINFALL TO THE GRAY AREA WHEN A
STORM TOTAL OF 2.25 INCHES FELL ON THE 20TH INTO THE 21ST. COOL
WEATHER FOLLOWED THIS HEAVY RAIN EVENT BEFORE A RIDGE OF HIGH
PRESSURE BUILT IN OVER THE NORTHEAST RESULTING IN VERY WARM WEATHER
TO CLOSE OUT THE MONTH OF MAY.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 55.9 DEGREES, WHICH WAS
1.7 DEGREES ABOVE NORMAL. THE WARMEST MAY ON RECORD WAS IN 2015 WHEN
THE AVERAGE TEMPERATURE WAS 59.0 DEGREES. THE COOLEST WAS 49.4
DEGREES IN 2005.

A TOTAL OF 4.88 INCHES OF PRECIPITATION FELL IN MAY, WHICH WAS 1.32
INCHES ABOVE NORMAL. THE WETTEST MAY ON RECORD WAS IN 2006 WHEN A
TOTAL 8.54 INCHES FELL. THE DRIEST WAS 0.90 INCHES IN 2018.

$$

DS