Climatological Report (Seasonal) Issued by NWS Portland, ME
000
CXUS51 KGYX 030151
CLSCON
PWMCLSCON 000
TTAA00 GYX 011907
CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
850 PM EST THU DEC 02 2021
...................................
...THE CONCORD NH CLIMATE SUMMARY FOR THE FALL SEASON, FROM 9/1/2021
TO 11/30/2021...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1868 TO 2021
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 98 09/02/1953
LOW -17 11/30/1875
HIGHEST 84 09/08 88 -4 86 09/08
09/15
LOWEST 15 11/30 11 4 13 11/19
11/18
AVG. MAXIMUM 63.1 61.0 2.1 63.2
AVG. MINIMUM 41.1 38.5 2.6 38.1
MEAN 52.1 49.8 2.3 50.6
DAYS MAX >= 90 0 0.9 -0.9 0
DAYS MAX <= 32 0 1.5 -1.5 1
DAYS MIN <= 32 25 33.5 -8.5 33
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 22.08 2005
MINIMUM 2.88 1908
TOTALS 10.43 11.50 -1.07 9.32
DAILY AVG. 0.11 0.13 -0.02 0.10
DAYS >= .01 32 30.7 1.3 26
DAYS >= .10 20 19.1 0.9 14
DAYS >= .50 8 7.5 0.5 8
DAYS >= 1.00 3 3.0 0.0 2
GREATEST
24 HR. TOTAL 2.21 10/30 TO 10/31
SNOWFALL (INCHES)
RECORDS
TOTAL 25.7 2011
TOTALS 0.4 3.3 -2.9 0.8
SINCE 7/1 0.4 3.3 -2.9 MM
SNOWDEPTH AVG. T
DAYS >= TRACE 3 1.8 1.2 4
DAYS >= 1.0 0 1.0 -1.0 0
GREATEST
SNOW DEPTH T 11/27
24 HR TOTAL 0.4 11/26
DEGREE DAYS
HEATING TOTAL 1190 1441 -251 1337
SINCE 7/1 1214 1473 -259 MM
COOLING TOTAL 42 53 -11 50
SINCE 1/1 658 528 130 726
................................................................
WIND (MPH)
AVERAGE WIND SPEED 4.8
HIGHEST WIND SPEED/DIRECTION 30/280 DATE 09/15
HIGHEST GUST SPEED/DIRECTION 40/280 DATE 09/15
SKY COVER
AVERAGE SKY COVER 0.50
AVERAGE RH (PERCENT) 72
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 HEAVY RAIN 6
RAIN 16 LIGHT RAIN 40
FREEZING RAIN 0 LT FREEZING RAIN 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 2 FOG 49
FOG W/VIS <= 1/4 MILE 16 HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
UNSETTLED AND COOL CONDITIONS DOMINATED THE FIRST PART OF SEPTEMBER
WITH THE REMNANTS OF HURRICANE IDA BRINGING HEAVY RAIN ON THE 1ST
AND 2ND. TEMPERATURES THEN TRENDED ABOVE NORMAL THROUGH THE MIDDLE
TO LATTER PART OF THE MONTH AS WARMER AND HUMID AIRMASSES CROSSED
THE AREA WITH A COOL DOWN TO CLOSE OUT THE MONTH. AFTER 1.77 INCHES
OF RAIN FROM THE REMNANTS OF IDA THE REST OF SEPTEMBER WAS
CHARACTERIZED BY FREQUENT BOUTS OF LIGHT TO MODERATE RAIN. OCTOBER
ON THE WHOLE WAS WARM AND RELATIVELY DRY FOR MUCH OF THE MONTH. THE
CONCORD AREA EXPERIENCED MULTIPLE WARM SPELLS THROUGHOUT OCTOBER
WHERE THE HIGH TEMPERATURE ROSE ABOVE 70 DEGREES WITH THE LONGEST
STRETCH OF 70 DEGREES OR HIGHER OCCURRING FROM THE 11TH TO THE 16TH.
PRECIPITATION EVENTS WERE RELATIVELY SPARSE THROUGH THE FIRST HALF
OF THE MONTH WITH A GENERAL SHIFT TO AN ACTIVE PATTERN THE SECOND
HALF OF THE MONTH. OCTOBER RAINFALL WOULD HAVE ENDED UP WELL BELOW
NORMAL IF NOT FOR AN AREA OF LOW PRESSURE BRINGING MODERATE TO HEAVY
RAIN ON THE 30TH INTO THE 31ST. THIS SYSTEM BROUGHT THE GREATEST
RAINFALL DURING THE FALL WITH A TOTAL OF 2.25 INCHES RECORDED. IN
ADDITION TO SEVERAL DAYS WARMING INTO THE 70S, OVERNIGHT LOWS WERE
ALSO ABOVE NORMAL WITH CONCORD RECORDING ITS SECOND LATEST FREEZE ON
RECORD WHEN THE TEMPERATURES DROPPED TO 27 DEGREES ON THE 24TH. THIS
WAS ONE DAY SHORT OF THE LATEST FREEZE ON RECORD, WHICH WAS OCTOBER
25, 1921 WHEN THE TEMPERATURE DROPPED TO 30 DEGREES. AFTER A STORMY
END TO OCTOBER THE WEATHER PATTERN OVER NEW ENGLAND TURNED QUIET
THROUGH THE FIRST PART OF NOVEMBER. PERSISTENT HIGH PRESSURE KEPT
THE CONCORD AREA PRECIPITATION FREE THROUGH THE FIRST WEEK AND A
HALF WITH SOME MILD SUNNY DAYS AND COLD CLEAR NIGHTS. TOWARDS THE
END OF THE SECOND WEEK OF NOVEMBER THE PATTERN TURNED MORE ACTIVE AS
A BROAD AREA OF LOW PRESSURE TRACKED FROM THE GREAT LAKES THROUGH
THE NORTHEAST. THE PATTERN REMAINED RELATIVELY ACTIVE THROUGH THE
END OF THE MONTH WITH FRONTAL PASSAGES BRINGING SEVERAL TEMPERATURE
SWINGS. AFTER A MILD THANKSGIVING, A COLD FRONT CROSSED THE AREA
WITH LOW PRESSURE DEVELOPING IN THE GULF OF MAINE LEADING TO THE
FIRST MEASURABLE SNOWFALL OF 0.4 INCHES ON THE 26TH.
THE AVERAGE TEMPERATURE WAS 52.1 DEGREES, WHICH WAS 2.3 DEGREES
ABOVE NORMAL AND TIES WITH 2016 AND 1879 FOR THE SEVENTH WARMEST
FALL ON RECORD. THE WARMEST FALL ON RECORD WAS 53.5 DEGREES IN 2017.
THE COOLEST WAS 43.7 DEGREES IN 1972. THE FOLLOWING TABLE LISTS THE
WARMEST FALLS ON RECORD AT CONCORD.
WARMEST AVERAGE TEMPERATURE IN FALL (SINCE 1868)...
RANK AVE YEAR
1 53.5 2017
2 53.0 1961
3 52.6 1881
4 52.3 1931
52.3 1878
52.3 1877
7 52.1 2021 <===
52.1 2016
52.1 1879
10 51.9 2011 AND 1882
THE FIRST FREEZE OF THIS FALL OCCURRED ON OCTOBER 24TH WHEN THE LOW
TEMPERATURE DROPPED TO 27 DEGREES. THIS OCCURRED 21 DAYS LATER THAN
THE NORMAL FIRST FREEZE OF OCTOBER 3RD AND MAKES THIS THE 2ND LATEST
FREEZE ON RECORD. THE FOLLOWING TABLE LISTS THE LATEST FALL FREEZES
ON RECORD.
LATEST FIRST FALL FREEZE (SINCE 1868)...
RANK DATE YEAR
1 OCT 25 1921
2 OCT 24 2021 <===
3 OCT 22 1882
4 OCT 20 2005
5 OCT 19 1869
6 OCT 18 1909
7 OCT 17 1893
8 OCT 16 1961
9 OCT 15 1939
10 OCT 14 2007 AND 1933
A TOTAL OF 10.43 INCHES OF PRECIPITATION FELL, WHICH WAS 1.07 INCHES
BELOW NORMAL. THE HEAVIEST RAIN FELL ON OCTOBER 30-31 WHEN A TOTAL
OF 2.25 INCHES WAS RECORDED. THE DRIEST FALL WAS IN 1908 WHEN ONLY
2.88 INCHES WAS RECORDED. THE WETTEST WAS IN 2005 WITH 22.08 INCHES.
ONLY 0.4 INCHES OF SNOW FELL, WHICH WAS 2.9 INCHES BELOW NORMAL. ALL
OF THIS SNOW FELL ON NOVEMBER 26. SNOW IN FALL IS OFTEN HIT OR MISS.
IN 154 YEARS OF RECORDS THERE HAVE BEEN 3 YEARS WITH NO SNOW IN
FALL, MOST RECENTLY IN 2015. THERE HAVE BEEN AN ADDITIONAL 29 YEARS
WHICH RECORDED ONLY A TRACE OF SNOWFALL, MOST RECENTLY IN 2010. THE
SNOWIEST FALL WAS IN 2011 WHEN 25.7 INCHES FELL.
THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN FALL 2021...
DATE RECORD PREVIOUS
SEP 23 67 - WARMEST LOW TEMPERATURE 67 IN 1970 AND 1909 (TIED)
$$
SCHROETER