June 2021 Climate Summary for Northern and Eastern Maine

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PUBLIC INFORMATION STATEMENT

NATIONAL WEATHER SERVICE CARIBOU ME

428 PM EDT FRI JUL 2 2021

...JUNE 2021 CLIMATE NARRATIVE FOR NORTHERN AND EASTERN MAINE...

JUNE WAS A VERY WARM MONTH ACROSS NORTHERN AND EASTERN MAINE.

TEMPERATURES RANGED FROM 3 TO 5 DEGREES ABOVE AVERAGE. IT RANKED 

AS THE ALL-TIME WARMEST JUNE ON RECORD IN CARIBOU, AND IT WAS ONE

HALF A DEGREE (0.5F) WARMER THAN THE PREVIOUS RECORD THAT WAS SET

JUST LAST YEAR. IN HOULTON, IT RANKED AS THE 2ND WARMEST JUNE 

BEHIND ONLY 1973. IN MILLINOCKET, IT RANKED AS THE 2ND WARMEST 

JUNE BEHIND ONLY 1930; AND FINALLY IN BANGOR IT RANKED AS THE 4TH 

WARMEST BEHIND 1930, 1933, AND 1938. 

FOR THE FIRST TIME SINCE WEATHER RECORDS BEGAN IN 1939 THERE WAS A

90-DEGREE DAY IN CARIBOU DURING THE FIRST TEN DAYS OF JUNE. IN 

FACT, THERE WERE BACK-TO-BACK HIGHS OF 92 DEGREES ON THE 7TH AND 

8TH. THE LOW OF 69 DEGREES ON THE 27TH TIED WITH 1942, 1949,

AND 2017 FOR THE ALL-TIME WARMEST LOW TEMPERATURE DURING THE 

MONTH OF JUNE. 

PRECIPITATION WAS WELL BELOW AVERAGE AND RANGED FROM 25 TO 75

PERCENT OF NORMAL. THE ONLY EXCEPTIONS WERE ACROSS THE FAR NORTH

FROM CARIBOU NORTH TO THE SAINT JOHN VALLEY WHERE PRECIPITATION

WAS 80 TO 110 PERCENT OF NORMAL, AND IN SOME SMALL PARTS OF

WASHINGTON AND HANCOCK COUNTY THAT LOCALLY HAD ABOVE AVERAGE 

PRECIPITATION DUE TO LOCALIZED THUNDERSTORMS. 

IN BANGOR, IT RANKED AS THE 2ND DRIEST JUNE ON RECORD WITH ONLY

0.97 INCHES OF RAIN. IN MILLINOCKET IT RANKED AS THE 8TH DRIEST

JUNE ON RECORD WITH 1.37 INCHES OF RAIN. 

THE MOST SIGNIFICANT EVENTS OF THE MONTH WERE FLASH FLOODING THAT

OCCURRED IN THE MORNING OF JUNE 9TH IN PARTS OF WASHINGTON AND

HANCOCK COUNTIES WITH LOCAL REPORTS OF OVER 5 INCHES OF RAIN. 

SEVERE THUNDERSTORMS ON THE 21ST. A MICROBURST OVER LIMESTONE 

MAINE PRODUCED WIND GUSTS THAT WERE ESTIMATED AT 100 TO 110 MPH. 

ANOTHER MICROBURST THAT SAME DAY FROM CASTLE HILL TO JUST 

SOUTHWEST OF CARIBOU THAT PRODUCED WIND GUSTS THAT WERE ESTIMATED 

BETWEEN 90-100 MPH. 

DROUGHT CONDITIONS WORSENED ACROSS THE REGION DURING THE MONTH OF

JUNE. BY THE END OF THE MONTH, SEVERE DROUGHT CONDITIONS WERE

OBSERVED ACROSS PORTIONS OF SOUTHERN PENOBSCOT AND SOUTHWEST

PISCATAQUIS COUNTIES. MODERATE DROUGHT WAS OBSERVED ACROSS MUCH OF

THE REMAINDER OF THE AREA, WITH ABNORMALLY DRY CONDITIONS 

OBSERVED ACROSS THE CROWN OF MAINE SOUTH INTO WASHINGTON COUNTY.

THE OUTLOOK FOR THE MONTH OF JULY FROM THE CLIMATE PREDICTION 

CENTER IS CALLING FOR GREATER PROBABILITIES OF ABOVE AVERAGE 

TEMPERATURES AND BELOW AVERAGE PRECIPITATION ACROSS THE REGION.

AVERAGE TEMPERATURES FOR JULY RANGE FROM LOWS IN THE MID TO UPPER

50S AND HIGHS IN THE MID TO UPPER 70S ACROSS THE NORTH TO LOWS

CLOSER TO 60 AND HIGHS IN THE LOW 80S FOR INTERIOR DOWNEAST. 

AVERAGE RAINFALL FOR THE REGION AS A WHOLE IS 3.50 TO 4 INCHES.

$$

CB/VJN