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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
342 PM EDT SUN JUL 02 2023

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

...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF JUNE 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             98   06/28/1991
 LOW              33   06/04/1944
HIGHEST           85   06/02         89      -4       86  06/25
                                                          06/26
LOWEST            43   06/04         43       0       45  06/06
                                                          06/20
AVG. MAXIMUM    68.7               73.6    -4.9     72.1
AVG. MINIMUM    53.8               55.0    -1.2     53.7
MEAN            61.3               64.3    -3.1     62.9
DAYS MAX >= 90     0                1.0    -1.0        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       10.86   1917
 MINIMUM        0.53   1908
TOTALS          5.68               4.15    1.53     2.62
DAILY AVG.      0.19               0.14    0.05     0.09
DAYS >= .01       16               11.7     4.3       11
DAYS >= .10        8                6.9     1.1        6
DAYS >= .50        3                2.5     0.5        2
DAYS >= 1.00       2                1.0     1.0        0
GREATEST
 24 HR. TOTAL   1.89   06/17 TO 06/18

SNOWFALL (INCHES)
RECORDS
 TOTAL           0.0
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1       56.5               68.7   -12.2     44.1
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

DEGREE DAYS
HEATING TOTAL    136                 89      47       98
 SINCE 7/1      6267               6794    -527     6498
COOLING TOTAL     29                 68     -39       43
 SINCE 1/1        35                 79     -44       54
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.7
HIGHEST WIND SPEED/DIRECTION    25/350    DATE  06/06
HIGHEST GUST SPEED/DIRECTION    33/340    DATE  06/06

SKY COVER
AVERAGE SKY COVER           0.70

AVERAGE RH (PERCENT)     83

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     HEAVY RAIN                 4
RAIN                      7     LIGHT RAIN                21
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     FOG                       23
FOG W/VIS <= 1/4 MILE     6     HAZE                       3

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

&&

JUNE GLOOM WAS THE THEME FOR THE MONTH IN THE PORTLAND AREA. THERE
WERE 16 DAYS DURING THE MONTH THAT THE PORTLAND AREA RECEIVED
MEASURABLE PRECIPITATION WITH AN ADDITIONAL EIGHT DAYS WITH A TRACE
OF PRECIPITATION. WHEN IT WASN`T RAINING IT WAS OFTEN CLOUDY WITH
THE FREQUENCY OF MID DAY OVERCAST SKIES NEARLY TWICE THAT AS THE
CLIMATOLOGICAL AVERAGE. ADDITIONALLY, THERE WERE 23 DAYS DURING THE
MONTH WHEN FOG WAS REPORTED AT THE PORTLAND JETPORT. AS A RESULT,
TEMPERATURES AVERAGED WELL BELOW NORMAL MOSTLY DUE TO DAY TIME HIGH
TEMPERATURES OFTEN BEING RELEGATED TO THE 60S. THE PRIMARY CULPRIT
OF THIS DREARY WEATHER WAS A SERIES OF UPPER LOWS THAT SLOWLY
MEANDERED THROUGH THE NORTHEAST. WITH JET STREAM WINDS WEAKER
THAN NORMAL THESE UPPER LOWS WERE SLOW TO EXIT INTO THE NORTH
ATLANTIC. DURING THE SECOND HALF OF THE MONTH THE HUMIDITY ALSO
STARTED TO BUILD INTO NEW ENGLAND AND THIS INCREASE IN MOISTURE LED
TO SEVERAL DAYS WITH THUNDERSTORMS AND LOCALIZED TORRENTIAL
RAINFALL. THESE TORRENTIAL RAINFALL EVENTS RESULTED IN MULTIPLE
FLASH FLOODING EVENTS IN MAINE, WHILE THE PORTLAND AREA WAS SPARED
FROM THESE EVENTS.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 61.3 DEGREES, WHICH WAS
3.1 DEGREES BELOW NORMAL. THE COOLEST JUNE ON RECORD WAS IN 1958
WHEN THE AVERAGE TEMPERATURE WAS 58.1 DEGREES. THE WARMEST WAS 68.9
DEGREES IN 2021.

A TOTAL OF 5.68 INCHES OF PRECIPITATION FELL, WHICH WAS 1.53 INCHES
ABOVE NORMAL. THE HEAVIEST RAIN FELL ON THE 17TH INTO THE 18TH WHEN
LOW PRESSURE TRACKED ACROSS SOUTHERN NEW ENGLAND INTO THE GULF OF
MAINE BRINGING 1.89 INCHES OF RAIN. THE WETTEST JUNE ON RECORD WAS
IN 1917 WHEN 10.86 INCHES OF PRECIPITATION FELL. THE DRIEST WAS 0.53
INCHES IN 1908.

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN JUNE 2023...
DATE    RECORD                                 PREVIOUS
JUN  4    50   - LOWEST MAXIMUM TEMPERATURE    51 IN 2018

$$

DS