Climatological Report (Monthly)
Issued by NWS
Issued by NWS
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CXUS51 KGYX 031546
CLMMHT
PWMCLMMHT 000
TTAA00 GYX 011821
CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
221 PM EDT SUN OCT 01 2023
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...THE MANCHESTER CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1885 TO 2023
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
HIGHEST 95 09/07 89 6
LOWEST 43 09/28 37 6
AVG. MAXIMUM 76.0 74.6 1.4
AVG. MINIMUM 57.7 54.1 3.6
MEAN 66.9 64.3 2.6
DAYS MAX >= 90 3 1.1 1.9
DAYS MAX <= 32 0 0.0 0.0
DAYS MIN <= 32 0 0.1 -0.1
DAYS MIN <= 0 0 0.0 0.0
PRECIPITATION (INCHES)
TOTALS 5.75 3.72 2.03
DAILY AVG. 0.19 0.12 0.07
DAYS >= .01 11 9.2 1.8
DAYS >= .10 7 5.7 1.3
DAYS >= .50 4 2.1 1.9
DAYS >= 1.00 2 0.8 1.2
GREATEST
24 HR. TOTAL 2.12 09/18
SNOWFALL (INCHES)
TOTALS 0.0
SINCE 7/1 0.0
DAYS >= TRACE 0
DAYS >= 1.0 0
GREATEST
SNOW DEPTH 0
DEGREE DAYS
HEATING TOTAL 71 98 -27 102
SINCE 7/1 72 108 -36 102
COOLING TOTAL 133 78 55 60
SINCE 1/1 793 767 26 1010
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 4.5
HIGHEST WIND SPEED/DIRECTION 35/310 DATE 09/16
HIGHEST GUST SPEED/DIRECTION 47/320 DATE 09/16
SKY COVER
AVERAGE SKY COVER 0.61
AVERAGE RH (PERCENT) 72
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 7
LIGHT RAIN 14 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 18 FOG W/VIS <= 1/4 MILE 3
HAZE 4
- 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 MANCHESTER 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 MANCHESTER AREA HAD SEEN SINCE THE END OF MAY. ALONG WITH DRY
WEATHER, TEMPERATURES CLIMBED WELL ABOVE NORMAL DURING THE FIRST
WEEK OF SEPTEMBER WITH THREE DAYS IN A ROW OF HIGHS IN THE 90S FROM
THE 5TH INTO THE 7TH. 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 47 MPH ON THE 16TH WHILE
THE BULK OF RAIN MISSED THE MANCHESTER AREA TO THE EAST. A MORE
SIGNIFICANT RAIN EVENT OCCURRED ON THE 18TH WHEN LOW PRESSURE
TRACKED ACROSS CAPE COD INTO THE GULF OF MAINE BRINGING 2.12 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 66.9 DEGREES, WHICH WAS
2.6 DEGREES ABOVE NORMAL. THE WARMEST SEPTEMBER ON RECORD WAS IN
2015 WHEN THE AVERAGE TEMPERATURE WAS 68.3 DEGREES. THE COOLEST WAS
57.9 DEGREE IN 1885.
A TOTAL OF 5.75 INCHES OF PRECIPITATION FELL, WHICH WAS 2.03 INCHES
ABOVE NORMAL. THE HEAVIEST PRECIPITATION OCCURRED ON THE 18TH WHEN
2.12 INCHES OF RAIN FELL. THE WETTEST SEPTEMBER ON RECORD WAS IN
1888 WHEN 9.55 INCHES OF PRECIPITATION FELL. THE DRIEST WAS 0.10
INCHES IN 1914.
HISTORICAL RECORDS AT MANCHESTER BEGAN IN 1885, BUT WITHIN THIS
RECORD THERE REMAIN NUMEROUS YEARS OF UNAVAILABLE DATA. DUE TO THIS,
HISTORICAL RECORDS SHOULD BE CONSIDERED INCOMPLETE AS SOME
SIGNIFICANT EXTREMES MAY BE MISSING FROM THE DATA. MORE CONSISTENT
MODERN RECORDS BEGAN IN 1998 AND CONTINUE TO THE PRESENT.
$$
DS