Climatological Report (Seasonal) Issued by NWS Portland, ME
000
CXUS51 KGYX 050834
CLSCON
PWMCLSCON 000
TTAA00 GYX 020934
CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
433 AM EDT SUN SEP 05 2021
...................................
...THE CONCORD NH CLIMATE SUMMARY FOR THE SEASON, FROM
6/1/2021 TO 8/31/2021...
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 102 07/03/1966
07/04/1911
LOW 29 08/31/1965
HIGHEST 97 06/28 95 2 96 08/11
07/27
07/19
LOWEST 41 06/01 37 4 33 06/01
AVG. MAXIMUM 81.3 80.8 0.5 83.7
AVG. MINIMUM 59.3 56.7 2.6 57.6
MEAN 70.3 68.8 1.5 70.7
DAYS MAX >= 90 16 11.6 4.4 24
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 20.49 1897
MINIMUM 2.74 1999
TOTALS 17.69 11.02 6.67 5.92
DAILY AVG. 0.19 0.12 0.07 0.07
DAYS >= .01 43 33.6 9.4 31
DAYS >= .10 30 20.0 10.0 13
DAYS >= .50 11 7.3 3.7 5
DAYS >= 1.00 5 2.8 2.2 1
GREATEST
24 HR. TOTAL 2.66
SNOWFALL (INCHES)
RECORDS
TOTAL 0.0
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0
SNOWDEPTH AVG. 0
DAYS >= TRACE 0 0.0 0.0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0
24 HR TOTAL 0.0
DEGREE DAYS
HEATING TOTAL 69 103 -34 84
SINCE 7/1 24 29 -5 29
COOLING TOTAL 585 453 132 634
SINCE 1/1 616 475 141 676
................................................................
WIND (MPH)
AVERAGE WIND SPEED 4.8
HIGHEST WIND SPEED/DIRECTION 33/320 DATE 07/27
HIGHEST GUST SPEED/DIRECTION 44/320 DATE 07/27
SKY COVER
AVERAGE SKY COVER 0.42
AVERAGE RH (PERCENT) 73
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 12 HEAVY RAIN 17
RAIN 31 LIGHT RAIN 48
FREEZING RAIN 0 LT FREEZING RAIN 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 FOG 59
FOG W/VIS <= 1/4 MILE 12 HAZE 6
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
AFTER A COLD AND WET MEMORIAL DAY WEEKEND, A WARMING TREND BEGAN.
ONLY A WEEK INTO JUNE AND THE FIRST HEAT WAVE OF SUMMER HAD ARRIVED.
THE TEMPERATURE TOPPED 90 DEGREES FOR 4 STRAIGHT DAYS FROM JUNE 5
THROUGH 8. ALTHOUGH A FEW COLD FRONTS BROUGHT SOME RELIEF FROM THE
HEAT, THE WARM AND HUMID AIR KEPT RETURNING. ANOTHER HEAT WAVE
ARRIVED FOR THE END OF JUNE WITH THE TEMPERATURE PEAKING AT 97
DEGREES ON JUNE 28. THE TWO HEAT WAVES IN JUNE HELPED MAKE IT THE
WARMEST JUNE IN NEARLY 150 YEARS. BUT JUST AS THE SUMMER`S NEXT
HOLIDAY WEEKEND ARRIVED, THE WEATHER TURNED COLD AND RAINY AGAIN.
MORE THAN 3 INCHES OF RAIN FELL OVER THE INDEPENDENCE DAY WEEKEND
WITH THE TEMPERATURE MOSTLY IN THE 50S AND 60S. AFTER A BRIEF WARM
UP, THE REMNANTS OF TROPICAL STORM ELSA MOVED THROUGH THE REGION,
DROPPING MORE THAN 2 INCHES OF RAIN ON JULY 8 AND 9. A SERIES OF
COLD FRONTS BROUGHT COOL CANADIAN AIR MASSES INTO THE REGION FOR
MOST OF JULY. FREQUENT ROUNDS OF SHOWERS AND THUNDERSTORMS
ACCOMPANIED THE FRONTAL PASSAGES AS WELL. THE UNUSUALLY COOL AND WET
MIDSUMMER CONDITIONS LED TO THE WETTEST JULY ON RECORD AND THE
COOLEST IN MORE THAN A DECADE. THIS ALL BEGAN TO CHANGE AGAIN IN
AUGUST AS THE JET STREAM SHIFTED NORTHWARD ALLOWING THE HEAT AND
HUMIDITY TO RETURN. THE FIRST HEAT WAVE CAME IN THE SECOND WEEK OF
AUGUST, PEAKING AT 93 DEGREES ON AUGUST 12. A PAIR OF REMNANT
TROPICAL SYSTEMS BROUGHT RAIN IN MID AUGUST. THE FIRST WAS THE
REMNANTS OF TROPICAL STORM FRED, AND IT BROUGHT MORE THAN AN INCH OF
RAIN ON AUGUST 19 AND 20. A FEW DAYS LATER TROPICAL STORM HENRI MADE
LANDFALL IN SOUTHERN NEW ENGLAND. THIS SYSTEM BROUGHT ON AND OFF
RAIN FOR 3 DAYS. ONCE IT PASSED, THE HEAT RETURNED ONE MORE TIME.
THIS TIME IT PEAKED WITH A HIGH OF 94 ON AUGUST 26.
THE AVERAGE TEMPERATURE WAS 70.3 DEGREES WHICH WAS 1.5 DEGREES ABOVE
NORMAL AND THE 7TH WARMEST SUMMER ON RECORD. THE WARMEST SUMMER WAS
IN 1872 WHEN THE AVERAGE TEMPERATURE WAS 72.3 DEGREES. THE COOLEST
WAS 62.6 DEGREES IN 1903. THE FOLLOWING TABLE LISTS THE WARMEST
SUMMERS ON RECORD AT CONCORD.
WARMEST AVERAGE TEMPERATURE IN SUMMER (SINCE 1868)...
RANK AVE YEAR
1 72.3 1872
2 72.1 1876
3 71.7 1870
4 70.7 2020
5 70.5 2016
6 70.4 1877
7 70.3 2021 <===
8 70.2 2018
9 70.1 1949
10 70.0 2005
70.0 1938
A TOTAL OF 17.69 INCHES OF PRECIPITATION FELL WHICH WAS 6.67 INCHES
ABOVE NORMAL AND THE 7TH WETTEST SUMMER ON RECORD. NEARLY THREE
QUARTERS OF THIS RAIN FELL IN THE VERY WET MONTH OF JULY. THE
HEAVIEST RAIN WAS ON JULY 17 AND 18 WHEN 2.66 INCHES FELL. THE
WETTEST SUMMER WAS IN 1897 WHEN 20.49 INCHES WAS MEASURED. THE
DRIEST WAS IN 1913 WITH ONLY 3.65 INCHES. THE FOLLOWING TABLE LISTS
THE WETTEST SUMMERS AT CONCORD.
MOST PRECIPITATION IN SUMMER (SINCE 1868)...
RANK PRECIP YEAR
1 20.49 1897
2 20.08 1887
3 19.33 1872
4 18.40 2018
5 18.19 2009
6 17.92 1915
7 17.69 2021 <===
8 17.13 1903
9 16.46 2006
10 16.14 2008
THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN SUMMER 2021...
DATE RECORD PREVIOUS
JUN 8 69 - WARMEST LOW TEMPERATURE 67 IN 1871
JUN 29 74 - WARMEST LOW TEMPERATURE 72 IN 1880
JUL 3 59 - COOLEST HIGH TEMPERATURE 61 IN 1914
JUL 18 1.84 - GREATEST PRECIPITATION 1.45 IN 1949
AUG 12 72 - WARMEST LOW TEMPERATURE 72 IN 1891, 1872 (TIED)
AUG 23 69 - WARMEST LOW TEMPERATURE 69 IN 2009, 1879 (TIED)
AUG 24 68 - WARMEST LOW TEMPERATURE 68 IN 2015 (TIED)
$$
KIMBLE