Climatological Report (Seasonal) Issued by NWS Portland, ME
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CXUS51 KGYX 071034
CLSPWM
PWMCLSPWM 000
TTAA00 GYX 021759
CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
159 PM EDT THU JUN 02 2022
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...THE PORTLAND ME CLIMATE SUMMARY FOR THE SPRING SEASON, FROM
3/1/2022 TO 5/31/2022...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1941 TO 2021 (FOR TEMPERATURES)
CLIMATE RECORD PERIOD: 1871 TO 2021 (FOR PRECIPITATION)
CLIMATE RECORD PERIOD: 1882 TO 2021 (FOR SNOWFALL)
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 94 05/31/1987
LOW -21 03/04/1950
HIGHEST 84 05/14 85 -1 88 05/26
LOWEST 1 03/01 6 -5 7 03/02
AVG. MAXIMUM 54.7 53.5 1.2 55.3
AVG. MINIMUM 36.2 35.6 0.6 35.7
MEAN 45.4 44.5 0.9 45.5
DAYS MAX >= 90 0 0.4 -0.4 0
DAYS MAX <= 32 3 4.2 -1.2 3
DAYS MIN <= 32 28 37.2 -9.2 28
DAYS MIN <= 0 0 0.4 -0.4 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 22.55 1983
MINIMUM 4.23 1965
TOTALS 9.18 12.16 -2.98 8.50
DAILY AVG. 0.10 0.13 -0.03 0.09
DAYS >= .01 31 34.9 -3.9 28
DAYS >= .10 20 21.1 -1.1 15
DAYS >= .50 5 8.2 -3.2 6
DAYS >= 1.00 1 2.7 -1.7 2
GREATEST
24 HR. TOTAL 2.11 04/08
SNOWFALL (INCHES)
RECORDS
TOTAL 61.5 1906
TOTALS 3.0 16.4 -13.4 0.4
SINCE 7/1 44.1 68.7 -24.6 41.3
SNOWDEPTH AVG. 0
DAYS >= TRACE 7 6.4 0.6 9
DAYS >= 1.0 0 3.5 -3.5 0
GREATEST
SNOW DEPTH 5 03/03
24 HR TOTAL 0.9 03/09
DEGREE DAYS
HEATING TOTAL 1787 1894 -107 1788
SINCE 7/1 6400 6705 -305 6338
COOLING TOTAL 11 11 0 16
SINCE 1/1 11 11 0 16
................................................................
WIND (MPH)
AVERAGE WIND SPEED 8.5
HIGHEST WIND SPEED/DIRECTION 38/310 DATE 03/21
HIGHEST GUST SPEED/DIRECTION 55/300 DATE 03/08
SKY COVER
AVERAGE SKY COVER 0.55
AVERAGE RH (PERCENT) 67
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 HEAVY RAIN 5
RAIN 18 LIGHT RAIN 35
FREEZING RAIN 0 LT FREEZING RAIN 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 6 FOG 38
FOG W/VIS <= 1/4 MILE 12 HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
SPRING STARTED OFF COOLER THAN NORMAL AFTER A STRONG COLD FRONT
CROSSED THE REGION WITH SOME LIGHT SNOW EVENTS THROUGH THE FIRST FEW
DAYS OF MARCH. THE COOL WEATHER QUICKLY TURNED MILD BY THE END OF
THE FIRST WEEK OF MARCH WITH THE LAST OF THE WINTER SNOWPACK MELTING
BY THE MORNING OF MARCH 8TH. THERE WERE A COUPLE MORE LIGHT SNOW
EVENTS THROUGH THE MIDDLE OF MARCH, ALTHOUGH SNOWFALL NEVER AMOUNTED
TO MORE THAN ONE INCH. MILD WEATHER CONTINUED TO DOMINATE THROUGH
THE END OF MARCH EXCEPT FOR A STRONG COLD FRONT CROSSING NEW ENGLAND
LATE ON THE 27TH. THIS COLD FRONT BROUGHT SHOT OF COLD AIR ON THE
28TH WHEN THE HIGH TEMPERATURE ONLY REACHED 31 DEGREES AND WAS THE
LAST TIME A HIGH TEMPERATURE DID NOT GET ABOVE FREEZING FOR THE
SEASON. TEMPERATURES SLOWLY REBOUNDED THROUGH THE END OF MARCH AND
STAYED CLOSE TO NORMAL THROUGHOUT MUCH OF APRIL. DURING APRIL THERE
WAS AN ACTIVE PACIFIC JET STREAM WITH SEVERAL SYSTEMS CROSSING THE
CONUS BRINGING BOUTS OF RAIN TO PORTLAND. ALSO DURING THE MONTH OF
APRIL THE NAO STAYED PREDOMINANTLY NEGATIVE. THE COMPETING
INFLUENCES OF MILD PACIFIC AIR FLOODING THE CONUS WHILE BLOCKING
OVER THE NORTH ATLANTIC ASSOCIATED WITH THE -NAO HELPED TO KEEP
TEMPERATURES STEADY WITHOUT ANY WARMS SPELLS OR COLD SNAPS FOR MUCH
OF APRIL INTO EARLY MAY. THE RELATIVELY WET PATTERN IN APRIL GAVE
WAY TO A DRY AND WARM PATTERN AFTER THE FIRST FEW DAYS OF MAY. THE
PORTLAND AREA WENT 10 DAYS WITHOUT MEASURABLE PRECIPITATION FROM MAY
5TH TO MAY 14TH WHILE TEMPERATURES CLIMBED WELL ABOVE NORMAL PEAKING
ON THE 14TH WHEN THE HIGH REACHED 84 DEGREES. THIS WARM AND DRY
PATTERN WAS THE RESULT OF AN ANOMALOUS RIDGE THAT DEVELOPED OVER NEW
ENGLAND. THIS RIDGE BROKE DOWN A LITTLE DURING THE THIRD WEEK OF MAY
WITH A FEW COLD FRONTS CROSSING THE REGION BRINGING SHOWERS AND
THUNDERSTORMS AND KNOCKED TEMPERATURES DOWN CLOSER TO NORMAL. THE
RIDGE OF HIGH PRESSURE REDEVELOPED DURING THE LAST WEEK OF MAY
BRINGING WARM AND DRY CONDITIONS TO CLOSE OUT THE SPRING SEASON.
THE AVERAGE TEMPERATURE FOR SPRING WAS 45.4 DEGREES, WHICH WAS 0.9
DEGREES ABOVE NORMAL AND TIED FOR THE 6TH WARMEST SPRING ON RECORD.
THE WARMEST SPRING ON RECORD WAS 48.8 DEGREES IN 2010. THE COOLEST
WAS 37.9 DEGREES IN 1956. THE FOLLOWING TABLE LISTS THE WARMEST
SPRINGS ON RECORD AT PORTLAND.
WARMEST AVERAGE TEMPERATURE IN SPRING (SINCE 1941)...
RANK TEMP YEAR
1 48.8 2010
2 48.2 2012
3 47.0 1991
4 46.4 1998
5 45.5 2021
6 45.4 2022 <===
45.4 1981
8 45.3 2020
9 45.2 1942
10 45.1 2016
45.1 1945
THE LAST FREEZE OF THE SPRING OCCURRED ON MAY 9TH WHEN THE LOW
TEMPERATURE DROPPED TO 31 DEGREES. THIS WAS ALMOST TWO WEEKS LATER
THAN THE NORMAL LAST FREEZE OF APRIL 26TH.
A TOTAL OF 9.18 INCHES OF PRECIPITATION FELL, WHICH WAS 2.98 INCHES
BELOW NORMAL. THE HEAVIEST PRECIPITATION FELL ON APRIL 8TH WHEN A
LIQUID EQUIVALENT OF 2.11 INCHES WAS RECORDED. THE DRIEST SPRING WAS
IN 1965 WHEN ONLY 4.23 INCHES WAS MEASURED. THE WETTEST WAS IN 1983
WITH 22.55 INCHES.
THERE WAS 3.0 INCHES OF SNOWFALL, WHICH WAS 13.4 INCHES BELOW
NORMAL. THE HEAVIEST SNOWFALL FELL ON MARCH 9TH WHEN 0.9 INCHES WAS
MEASURED. THE LEAST SNOWIEST SPRING WAS IN 1921 AND 1910 WITH ONLY A
TRACE OF SNOWFALL. THE SNOWIEST WAS 61.5 INCHES IN 1906.
THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN SPRING 2022...
DATE RECORD PREVIOUS
MAR 6 48 - WARMEST AVERAGE TEMPERATURE 46 IN 2004 AND 1974
MAR 7 37 - WARMEST LOW TEMPERATURE 37 IN 2009 AND OTHERS(TIED)
APR 8 2.11 - GREATEST PRECIPITATION 1.09 IN 1899
APR 14 4 - SMALLEST TEMPERATURE RANGE 4 IN 1952 (TIED)
MAY 14 84 - WARMEST HIGH TEMPERATURE 81 IN 1961
MAY 14 58 - WARMEST LOW TEMPERATURE 56 IN 1979
MAY 14 71 - WARMEST AVERAGE TEMPERATURE 67 IN 1961
MAY 17 54 - WARMEST LOW TEMPERATURE 54 IN 1977 (TIED)
$$
DS/HAT