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Climatological Report (Seasonal)
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CXUS51 KGYX 030943
CLSAUG

PWMCLSAUG 000
TTAA00 GYX 011114

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
714 AM EDT FRI SEP 01 2023

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

...THE AUGUSTA CLIMATE SUMMARY FOR THE SUMMER SEASON, FROM
6/1/2023 TO 8/31/2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            100   08/05/1955
 LOW              36   06/09/1955
HIGHEST           93   06/01         93       0       93  08/04
                                                          08/07
LOWEST            43   06/04         44      -1       44  06/01
AVG. MAXIMUM    76.8               77.8    -1.0     80.3
AVG. MINIMUM    60.0               57.7     2.3     59.9
MEAN            68.4               67.7     0.7     70.1
DAYS MAX >= 90     3                4.0    -1.0       10
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       18.94   2009
 MINIMUM        4.76   1949
TOTALS         17.36              10.62    6.74     9.17
DAILY AVG.      0.19               0.12    0.07     0.10
DAYS >= .01       52               35.6    16.4       33
DAYS >= .10       29               19.9     9.1       22
DAYS >= .50       11                6.5     4.5        5
DAYS >= 1.00       5                2.3     2.7        1
GREATEST
 24 HR. TOTAL   2.96


DEGREE DAYS
HEATING TOTAL    113                122      -9       77
 SINCE 7/1         7                 28     -21        1
COOLING TOTAL    456                377      79      575
 SINCE 1/1       475                387      88      610
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.4
HIGHEST WIND SPEED/DIRECTION    25/350    DATE  06/06
HIGHEST GUST SPEED/DIRECTION    35/040    DATE  06/03

SKY COVER
AVERAGE SKY COVER           0.54

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             13     HEAVY RAIN                19
RAIN                     27     LIGHT RAIN                53
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     FOG                       68
FOG W/VIS <= 1/4 MILE    31     HAZE                       8

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

&&

THE SUMMER OF 2023 WAS WET IN THE AUGUSTA AREA. MORE OFTEN THAN NOT
A TROUGH OF LOW PRESSURE WAS IN THE VICINITY OF THE NORTHEAST WHICH
LED TO FREQUENT PRECIPITATION EVENTS. MANY OF THESE PRECIPITATION
EVENTS INVOLVED VERY HEAVY RAIN ACROSS MAINE WITH WFO GYX ISSUING
MORE FLASH FLOOD WARNINGS WITHIN THE FORECAST AREA THAN ANY OTHER
YEAR. THE BULK OF THESE FLASH FLOODING EVENTS OCCURRED ACROSS THE
INTERIOR OF MAINE INTO THE MOUNTAINS. A WARM START TO THE SUMMER SAW
TWO DAILY MAXIMUM TEMPERATURE RECORDS FALL ON THE FIRST TWO DAYS
WHEN JUNE 1ST HIT 93 AND THE 2ND HIT 91. AFTER THIS WARM START TO
SUMMER THE NAO QUICKLY DROPPED INTO NEGATIVE TERRITORY WHILE THE PNA
TURNED POSITIVE. THESE TELECONNECTIONS FAVORED A PATTERN OF UPPER
LOWS LINGERING OVER NEW ENGLAND AS A BLOCKING RIDGE OVER EASTERN
CANADA INHIBITED THE EASTWARD PROGRESSION OF THESE SYSTEMS. THIS
PATTERN RESULTED IN TEMPERATURES RUNNING BELOW NORMAL FOR THE
MONTH OF JUNE, WITH THE 4TH ONLY REACHING A HIGH OF 50 WHICH SET A
NEW RECORD COOL HIGH FOR THE DAY. THE PERSISTENT UPPER LOWS LED TO
22 DAYS OF THE MONTH WITH MEASURABLE PRECIPITATION AND 25 DAYS WITH
FOG. WHILE THE NAO DID TREND TOWARDS NEUTRAL DURING THE SECOND HALF
OF JUNE THE POSITIVE PNA HELPED TO MAINTAIN THE UNSETTLED PATTERN
THROUGH THE END OF THE MONTH. THE NAO TURNED SHARPLY NEGATIVE IN
EARLY JULY AND STAYED THERE THROUGH THE MIDDLE OF THE MONTH. THIS
CONTINUED THE UNSETTLED PATTERN THROUGH MUCH OF JULY WITH FRONTAL
SYSTEMS OFTEN STALLING OVER THE AREA DUE TO A DOWNSTREAM BLOCKING
RIDGE NEAR LABRADOR CANADA. THE AUGUSTA AREA REMAINED ON THE WARM
AND HUMID SIDE OF THESE STALLED FRONTS RESULTING IN A STRETCH OF 25
DAYS WHERE THE DEWPOINT DID NOT DROP BELOW 60 DEGREES. ALONG WITH
THE PROLONGED HUMIDITY, THE LOW TEMPERATURE IN AUGUSTA STAYED ABOVE
60 DEGREES FROM THE END OF JUNE THROUGH MUCH OF JULY. AT THE END OF
JULY THE NAO TRENDED TOWARDS NEUTRAL ALLOWING FOR FRONTAL SYSTEMS TO
SWEEP ACROSS THE AREA LEADING TO COOLER AND DRIER AIR TO ARRIVE INTO
THE AREA. TEMPERATURES AVERAGED ABOVE NORMAL IN JULY, LARGELY DUE TO
WARM NIGHT TIME TEMPERATURES. THE THEME OF FREQUENT PRECIPITATION
EVENTS CONTINUED THROUGH AUGUST. DURING THE FIRST HALF OF AUGUST THE
NAO REMAINED NEGATIVE WHILE THE PNA REMAINED POSITIVE WITH THESE
TELECONNECTIONS FAVORING A TROUGH JUST WEST OF NEW ENGLAND. THE NAO
DID TREND TOWARDS NEUTRAL AT TIMES, WHICH ALLOWED THE TROUGH AXIS TO
SHIFT NEAR OVERHEAD OF THE AUGUSTA AREA AND SOMETIMES EAST OF NEW
ENGLAND. THIS EASTWARD SHIFT OF THE TROUGH AXIS ALLOWED FOR COOL AND
DRY HIGH PRESSURE SYSTEMS TO BUILD INTO THE AREA BRINGING PERIODS OF
DRY WEATHER WITH TEMPERATURES TRENDING NEAR NORMAL.

THE AVERAGE TEMPERATURE FOR THE SUMMER WAS 68.4 DEGREES, WHICH WAS
0.7 DEGREES ABOVE NORMAL. THE WARMEST SUMMER ON RECORD WAS IN 1973
WHEN THE AVERAGE TEMPERATURE WAS 71.2 DEGREES. THE COOLEST WAS 63.7
DEGREES IN 1968.

A TOTAL OF 17.36 INCHES OF PRECIPITATION FELL, WHICH WAS 6.74 INCHES
ABOVE NORMAL AND THE 3RD WETTEST SUMMER ON RECORD. THE HEAVIEST RAIN
FELL ON AUGUST 8TH WHEN 2.96 INCHES FELL IN 24 HOURS. THE WETTEST
SUMMER WAS IN 2009 WHEN A TOTAL OF 18.94 INCHES OF PRECIPITATION
FELL. THE DRIEST WAS 4.76 INCHES IN 1949. THE FOLLOWING TABLE LISTS
THE WETTEST SUMMERS ON RECORD AT AUGUSTA.

MOST PRECIPITATION IN SUMMER (SINCE 1948)...
RANK  PRECIP  YEAR
1     18.94   2009
2     18.05   2006
3     17.36   2023   <===
4     16.58   2013
5     16.51   2014
6     15.63   1976
7     14.98   1954
8     14.08   1991
9     13.67   1973
10    13.31   2012

THE AUGUSTA AREA EXPERIENCED 52 DAYS WITH MEASURABLE PRECIPITATION
DURING THE SUMMER OF 2023. THIS WAS THE HIGHEST NUMBER OF DAYS WITH
MEASURABLE PRECIPITATION DURING SUMMER. THE FOLLOWING TABLE LISTS
THE SUMMERS WITH MOST DAYS OF MEASURABLE PRECIPITATION.

MOST DAYS WITH MEASURABLE PRECIPITATION IN SUMMER (SINCE 1871)...
RANK  DAYS  YEAR
1     52    2023   <===
2     47    2009
3     45    2013
      45    2008
5     44    2006
6     43    2004
7     41    2000
      41    1986
9     39    2005
      39    1999
      39    1954

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN SUMMER 2023...
DATE    RECORD                                 PREVIOUS
JUN  1   93    - WARMEST HIGH TEMPERATURE      92 IN 2013
JUN  2   91    - WARMEST HIGH TEMPERATURE      86 IN 1990
JUN  4   50    - COOLEST HIGH TEMPERATURE      55 IN 2018
JUL  2  1.18   - GREATEST PRECIPITATION        0.85 IN 1986
JUL 16   71    - WARMEST LOW TEMPERATURE       70 IN 2013 AND OTHERS
JUL 29  0.93   - GREATEST PRECIPITATION        0.93 IN 1981 (TIED)
AUG  8  2.96   - GREATEST PRECIPITATION        1.20 IN 2008

$$

DS
National Weather Service Weather Forecast Office
