Climatological Report (Annual)
Issued by NWS
Issued by NWS
000
CXUS51 KGYX 060429
CLAMHT
PWMCLAMHT 000
TTAA00 GYX 030203
CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
1128 PM EST TUE JAN 05 2021
...................................
...THE MANCHESTER CLIMATE SUMMARY FOR THE YEAR OF 2020...
CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1885 TO 2021
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 103 07/22/2011
LOW -20 02/13/1967
HIGHEST 98 07/19 97 1 97 07/20
LOWEST -7 02/15 -5 -2 0 02/02
01/31
01/21
AVG. MAXIMUM 62.1 58.7 3.4 59.2
AVG. MINIMUM 42.9 39.7 3.2 40.6
MEAN 52.5 49.2 3.3 49.9
DAYS MAX >= 90 33 10.9 22.1 13
DAYS MAX <= 32 18 34.8 -16.8 35
DAYS MIN <= 32 113 130.1 -17.1 132
DAYS MIN <= 0 1 3.0 -2.0 3
PRECIPITATION (INCHES)
TOTALS 33.62 44.58 -10.96 33.81
DAILY AVG. 0.09 0.12 -0.03 0.09
DAYS >= .01 105 131.1 -26.1 129
DAYS >= .10 66 78.2 -12.2 75
DAYS >= .50 22 28.4 -6.4 22
DAYS >= 1.00 8 9.5 -1.5 4
GREATEST
24 HR. TOTAL 2.09 12/05
SNOWFALL (INCHES)
TOTALS 39.2 63.1
SINCE 7/1 18.7 29.7
DAYS >= TRACE 37 51
DAYS >= 1.0 10 16
GREATEST
SNOW DEPTH 10 12/18
24 HR TOTAL 10.1 12/17
DEGREE DAYS
HEATING TOTAL 5551 6394 -843 6227
SINCE 7/1 2027 2369 -342 2309
COOLING TOTAL 1085 641 444 844
................................................................
WIND (MPH)
AVERAGE WIND SPEED 6.7
HIGHEST WIND SPEED/DIRECTION 41/020 DATE 07/02
HIGHEST GUST SPEED/DIRECTION 55/350 DATE 07/02
SKY COVER
AVERAGE SKY COVER 0.61
AVERAGE RH (PERCENT) 62
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 18 HEAVY RAIN 20
RAIN 40 LIGHT RAIN 132
FREEZING RAIN 0 LT FREEZING RAIN 2
HEAVY SNOW 5 SNOW 17
LIGHT SNOW 33 FOG 134
FOG W/VIS <= 1/4 MILE 26 HAZE 36
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
THE YEAR BEGAN WITH MILD WEATHER AND A GRADUALLY DIMINISHING SNOW
COVER LEFT OVER FROM A SNOWSTORM JUST BEFORE THE START OF THE YEAR.
A BIG WARM UP CAME WHEN THE TEMPERATURE WARMED TO 66 ON JANUARY 11
AND 69 ON JANUARY 12. ALTHOUGH THAT JANUARY THAW WAS ENOUGH TO MELT
THE LAST OF THE SNOW ON THE GROUND, MORE SNOW WAS ON THE WAY A FEW
DAYS LATER. AFTER A FEW DAYS OF SNOW AND SOME COLDER TEMPERATURES,
THE MILD WEATHER RETURNED. WARMER TEMPERATURES AND RAIN WASHED THE
SNOW AWAY AGAIN ON JANUARY 25. ANOTHER STRETCH OF WINTRY WEATHER
BROUGHT SNOW AND FREEZING RAIN ON FEBRUARY 6 AND 7 AND THEN AGAIN ON
FEBRUARY 13. THE COLDEST AIR OF THE YEAR MOVED IN BEHIND THIS STORM
WITH MANCHESTER BOTTOMING OUT AT 7 BELOW ZERO ON FEBRUARY 15. IT
DIDN`T LAST LONG, THOUGH, AS THE TEMPERATURE WARMED INTO THE 40S
AGAIN THE VERY NEXT DAY. THE MILD WEATHER CONTINUED WITH THE
TEMPERATURE REACHING 60 AGAIN LATER IN FEBRUARY AND IN EARLY MARCH.
THE WARMEST CONDITIONS WERE ON MARCH 9 WHEN THE TEMPERATURE SOARED
TO 74 DEGREES. A SNOWSTORM DROPPED 6 INCHES OF SNOW ON MARCH 23, BUT
MILD TEMPERATURES ENSURED THAT THIS SNOW BARELY LASTED A DAY ON THE
GROUND BEFORE MELTING AWAY.
MORE FREQUENT STORMY WEATHER WAS OBSERVED IN THE FIRST PART OF
SPRING. A NEW STORM SYSTEM BROUGHT RAIN OR EVEN WINTRY WEATHER JUST
ABOUT EVERY WEEK. AN INCH OF RAIN FELL MARCH 29 AND AGAIN ON APRIL 2
AND 3. THE NEXT STORM BROUGHT RAIN CHANGING TO SNOW ON APRIL 9 AND
10 WITH ANOTHER INCH OF LIQUID EQUIVALENT PRECIPITATION RECORDED.
THIS BEGAN A SHIFT TOWARD COOLER CONDITIONS WHICH LASTED FOR SEVERAL
WEEKS WHILE THE FREQUENT STORMINESS CONTINUED. ALTHOUGH THERE WERE A
FEW MILD DAYS, MOST DAYS WERE COOL WITH SHOWERS AND EVEN SNOWFLAKES
CONTINUING LATE INTO THE SPRING. SNOW WAS EVEN OBSERVED ON MAY 9,
ALTHOUGH IT NEVER ACCUMULATED TO A MEASURABLE DEPTH IN THE CITY.
SUDDENLY IN MID MAY THE FREQUENT STORMY WEATHER CAME TO AN ABRUPT
END AND PRECIPITATION SHUT OFF. THE PERSISTENT TROUGH WHICH HAD
BROUGHT THE COOL AND STORMY WEATHER SHIFTED TO THE EAST. INSTEAD,
FREQUENT COOL, DRY AIR MASSES SPILLED DOWN OUT OF CANADA. THE LAST
SIGNIFICANT RAINFALL WAS ON MAY 15 WHEN A THIRD OF AN INCH WAS
RECORDED. VERY LITTLE RAIN FELL FOR MORE THAN A MONTH CAUSING THE
RAPID ONSET OF DROUGHT CONDITIONS. TEMPERATURES DURING THIS PERIOD
WERE FREQUENTLY WARM DURING THE DAY AND OCCASIONALLY COOL AT NIGHT
DUE TO THE DRY AIR MASSES. WHILE THERE WERE A FEW HOT DAYS IN LATE
MAY INCLUDING 92 ON MAY 27, THE TEMPERATURE FELL ALL THE WAY TO 42
ON JUNE 1. AFTER REACHING 90 AGAIN ON MAY 6, THUNDERSTORMS DROPPED
NEARLY HALF AN INCH OF RAIN, THE ONLY SIGNIFICANT RAIN IN THIS
OTHERWISE EXCEPTIONALLY DRY PERIOD. THE FIRST CONSISTENTLY HOT
WEATHER ARRIVED IN MID JUNE WHEN MANCHESTER SAW THE TEMPERATURE
REACH THE UPPER 80S AND LOW 90S MOST DAYS. THE TEMPERATURE TOPPED 90
FOR 4 STRAIGHT DAYS FROM JUNE 18 THROUGH 21, PEAKING AT 95 ON JUNE
21. A SLOW MOVING LOW PRESSURE SYSTEM BROUGHT MORE FREQUENT SHOWERS
AND THUNDERSTORMS AT THE END OF JUNE, BRINGING SOME DROUGHT RELIEF
TO THE REGION. HOWEVER, MANCHESTER MISSED OUT ON THE HEAVIER
RAINFALL AND ONLY RECORDED A LITTLE MORE THAN HALF AN INCH FROM JUNE
27 THROUGH 30 WITH DROUGHT CONDITIONS CONTINUING.
THERE WERE MORE FREQUENT SHOWERS AND THUNDERSTORMS IN JULY,
INCLUDING MORE THAN AN INCH FALLING ON JULY 14. HOWEVER, THE
RAINFALL REMAINED BELOW NORMAL THROUGH THE SUMMER. BY MID JULY THE
TEMPERATURE AND HUMIDITY BEGAN TO BUILD. MANCHESTER SAW ANOTHER 4
STRAIGHT DAYS IN THE 90S FROM JULY 18 THROUGH 21 INCLUDING A HIGH OF
98 ON JUNE 19. THUNDERSTORMS BROUGHT A BREAK FROM THE HEAT AND SOME
MUCH NEEDED RAIN ON JULY 22, BUT THE HEAT AND HUMIDITY RETURNED.
MANCHESTER HIT 90 DEGREES AGAIN FOR 8 STRAIGHT DAYS FROM JULY 25
THROUGH AUGUST 1. TROPICAL STORM ISAIAS MOVED THROUGH THE REGION ON
AUGUST 4. THIS STORM DIDN`T BRING MUCH RAIN, BUT THE WIND GUSTED TO
49 MPH. THE HEAT AND HUMIDITY RETURNED SOON AFTER THE STORM
DEPARTED. MANCHESTER TOPPED 90 AGAIN FOR 5 STRAIGHT DAYS FROM AUGUST
9 THROUGH 13. A COLD FRONT ON AUGUST 15 BROUGHT SOME COOLER AIR AT
LEAST FOR A FEW DAYS. BUT MANCHESTER HAD ONE MORE HEAT WAVE IN 2020
WHEN THE TEMPERATURE REACHED 90 FOR 3 MORE DAYS ON AUGUST 23 THROUGH
25. WHEN THE SUMMER WAS FINALLY OVER MANCHESTER HAD RECORDED 33 DAYS
AT 90 DEGREES OR HIGHER.
LATE IN THE SUMMER AND INTO THE FALL THE EXTREMELY DRY CONDITIONS
RETURNED. A SERIES OF COLD FRONTS BROUGHT CONTINENTAL AIR MASSES
INTO THE REGION. THIS MEANT WARM DAYS AND SOME COOL NIGHTS THROUGH
MUCH OF SEPTEMBER. FINALLY SOME RAIN BEGAN TO FALL AGAIN AT THE END
OF SEPTEMBER AND THE WEATHER PATTERN BEGAN TO SHIFT BACK TOWARD A
MORE STORMY PATTERN. FREQUENT FRONTAL SYSTEMS BROUGHT A TOPSY TURVY
TEMPERATURE PATTERN WITH OCCASIONAL WARMTH REPLACED BY COLD. THE
FIRST SIGNIFICANT STORM BROUGHT MORE THAN AN INCH OF RAIN ON OCTOBER
13. A FEW DAYS LATER ANOTHER STORM DROPPED MORE THAN AN INCH OF RAIN
ON OCTOBER 16 AND 17. MORE CONSISTENT COLD WEATHER MOVED INTO THE
AREA FOR THE END OF OCTOBER. IN FACT, THE FIRST SNOW OF THE SEASON
CAME ON OCTOBER 30 WHEN 2.5 INCHES WAS MEASURED. ALTHOUGH THE COLD
WEATHER CONTINUED INTO THE FIRST PART OF NOVEMBER, A BIG WARM UP WAS
RIGHT AROUND THE CORNER. MANCHESTER SAW AN EXCEPTIONALLY INTENSE AND
LONG LASTING LATE SEASON WARM SPELL WITH THE TEMPERATURE TOPPING 70
DEGREES FOR 7 STRAIGHT DAYS FROM NOVEMBER 5 THROUGH 11. THE WARMEST
WAS 78 ON NOVEMBER 7, THE WARMEST TEMPERATURE ON RECORD FOR THE
MONTH OF NOVEMBER. A COLD FRONT ON NOVEMBER 12 BROUGHT THIS UNUSUAL
LATE SEASON WARMTH TO AN END WITH COLDER WEATHER RETURNING.
THE MORE FREQUENT STORMY WEATHER RETURNED IN MID NOVEMBER. MORE THAN
AN INCH OF RAIN FELL ON NOVEMBER 23 WITH MORE FALLING ON NOVEMBER
26. A STORM ON NOVEMBER 30 BROUGHT ANOTHER INCH OF RAIN ALONG WITH
WINDS GUSTING TO 41 MPH. JUST A FEW DAYS LATER THE NEXT STORM
BROUGHT COLDER TEMPERATURES AND A STICKY, WET SNOWFALL. ALTHOUGH A
LITTLE LESS THAN 4 INCHES OF SNOW WAS MEASURED ON DECEMBER 5, THERE
WAS MORE THAN 2 INCHES OF LIQUID EQUIVALENT PRECIPITATION RECORDED.
THE NEXT BIG STORM BROUGHT 10 INCHES OF SNOW ON DECEMBER 17 WITH
COLD AIR CONTINUING FOR SEVERAL MORE DAYS. THE COLDEST TEMPERATURE
WAS 4 DEGREES ON DECEMBER 19. WARMER WEATHER RETURNED JUST BEFORE
CHRISTMAS AND BY CHRISTMAS MORNING THE NEXT SIGNIFICANT STORM HAD
ARRIVED. MORE THAN 1.5 INCHES OF RAIN FELL ON CHRISTMAS DAY ALONG
WITH THE TEMPERATURE WARMING TO 62 DEGREES. WHEN IT WAS ALL OVER
THERE WAS NO MORE SNOW LEFT ON THE GROUND. MILD CONDITIONS CONTINUED
THROUGH THE END OF THE YEAR.
THE AVERAGE TEMPERATURE FOR THE YEAR WAS 52.5 DEGREES WHICH WAS 3.3
DEGREES ABOVE NORMAL AND THE WARMEST YEAR ON RECORD AT MANCHESTER.
UNTIL THIS YEAR, THE WARMEST YEAR WAS 2012 AT 52.2 DEGREES. THE
COLDEST WAS 45.2 DEGREES IN 1887. THE FOLLOWING TABLE LISTS THE
AVERAGE TEMPERATURES FOR EACH MONTH OF 2020 INCLUDING DEPARTURES
FROM NORMAL.
AVERAGE TEMPERATURES BY MONTH IN 2020
MONTH MAXIMUM MINIMUM AVERAGE
JANUARY 39.6 (+6.5) 24.0 (+8.3) 31.8 (+7.4)
FEBRUARY 39.9 (+3.0) 23.4 (+4.4) 31.7 (+3.7)
MARCH 51.3 (+6.4) 32.0 (+4.8) 41.6 (+5.6)
APRIL 54.0 (-3.6) 37.3 (+0.3) 45.7 (-1.6)
MAY 70.6 (+1.9) 48.2 (+0.7) 59.4 (+1.3)
JUNE 82.5 (+5.0) 59.4 (+2.8) 70.9 (+3.9)
JULY 87.7 (+5.3) 67.7 (+5.0) 77.7 (+5.2)
AUGUST 84.6 (+3.6) 64.3 (+3.4) 74.5 (+3.5)
SEPTEMBER 76.4 (+3.8) 54.8 (+2.3) 65.6 (+3.0)
OCTOBER 61.9 (+0.9) 43.3 (+2.7) 52.6 (+1.8)
NOVEMBER 55.5 (+5.7) 34.6 (+1.5) 45.1 (+3.6)
DECEMBER 40.8 (+2.6) 25.5 (+3.0) 33.1 (+2.7)
ANNUAL 62.1 (+3.4) 42.9 (+3.2) 52.5 (+3.3)
A TOTAL OF 33.62 INCHES OF PRECIPITATION FELL WHICH WAS 10.96 INCHES
BELOW NORMAL. THE HEAVIEST PRECIPITATION FELL ON DECEMBER 5 WHEN
2.09 INCHES OF LIQUID EQUIVALENT PRECIPITATION FELL, MUCH OF IT IN
THE FORM OF SNOW. MANCHESTER SAW 6 CONSECUTIVE MONTHS OF BELOW
NORMAL PRECIPITATION FROM MAY THROUGH SEPTEMBER, LEADING TO DROUGHT
CONDITIONS. THE DRIEST YEAR ON RECORD WAS IN 2015 WITH ONLY 27.45
INCHES MEASURED. THE WETTEST WAS IN 1954 WHEN 56.54 INCHES FELL. THE
FOLLOWING TABLE LISTS THE PRECIPITATION AND SNOWFALL AMOUNTS FOR
EACH MONTH OF 2020 INCLUDING DEPARTURES FROM NORMAL PRECIPITATION.
MONTHLY PRECIPITATION AND SNOWFALL TOTALS FOR 2020
MONTH PRECIPITATION SNOWFALL
JANUARY 1.99 (-1.03) 6.8
FEBRUARY 2.90 (+0.12) 7.7
MARCH 3.07 (-1.26) 6.0
APRIL 4.52 (+0.66) T
MAY 1.58 (-2.47) T
JUNE 1.22 (-2.57) 0.0
JULY 2.82 (-0.98) 0.0
AUGUST 1.22 (-2.41) 0.0
SEPTEMBER 1.48 (-2.33) 0.0
OCTOBER 4.01 (-0.15) 2.5
NOVEMBER 4.26 (+0.19) T
DECEMBER 4.55 (+1.27) 16.2
ANNUAL 33.62 (-10.96) 39.2
THERE WERE 8 DAYS THAT RECORDED AT LEAST 1.00 INCH OF PRECIPITATION
WHICH WAS 1.5 DAYS BELOW NORMAL. THE FOLLOWING TABLE LISTS THE DAYS
WHICH RECEIVED AT LEAST 1.00 INCH OF PRECIPITATION IN 2020.
DAYS WITH AT LEAST 1.00 INCH OF PRECIPITATION IN 2020
DAY PRECIPITATION
MARCH 29 1.05
APRIL 9 1.01
JULY 14 1.01
OCTOBER 13 1.10
NOVEMBER 23 1.66
NOVEMBER 30 1.26
DECEMBER 5 2.09
DECEMBER 25 1.55
SNOWFALL STATISTICS ARE NORMALLY LISTED BY SEASON RATHER THAN BY
CALENDAR YEAR. HOWEVER, 2020 SAW 39.2 INCHES OF SNOWFALL. THE
HEAVIEST SNOW FELL ON DECEMBER 17 WHEN 10.1 INCHES WAS RECORDED. THE
FOLLOWING TABLE LISTS THE DAYS THAT RECORDED AT LEAST 6 INCHES OF
SNOWFALL IN 2020.
DAYS WITH AT LEAST 6 INCHES OF SNOWFALL IN 2020
DAY SNOWFALL
MARCH 23 6.0
DECEMBER 17 10.1
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.
$$
KIMBLE