May 2021 Climate Summary for Northern and Eastern Maine
...MAY 2021 CLIMATE NARRATIVE FOR NORTHERN AND EASTERN MAINE...
MAY 2021 FINISHED WITH NEAR NORMAL TEMPERATURES AND BELOW TO NEAR
NORMAL RAINFALL.
THE MONTH BEGAN COOL THROUGH THE FIRST COUPLE OF WEEKS THEN
TRANSITIONED TO ABOVE NORMAL TEMPERATURES MID TO LATE MONTH WITH
THE LAST 5 DAYS FINISHING ON THE DECIDELY COOL SIDE. THE WARMEST
DAYS WERE EXPERIENCED FROM THE 20TH THOUGH 22ND AND THE 26TH WITH
MOST LOW TERRAIN LOCATIONS INLAND FROM THE IMMEDIATE COAST
EXPERIENCING 80+ DEGREE HIGH TEMPS AND EVEN A FEW LOCATIONS
ACROSS CENTRAL AREAS IN THE LOWER 90S ON THE 26TH. SUB-FREEZING
MORNINGS OCCURRED INTERMITTENTLY DURING THE FIRST TWO WEEKS AND
AGAIN NOTABLY AT THE END OF THE MONTH WHEN SEVERAL GROWING SEASON
FROST/FREEZE HEADLINES WERE ISSUED TO PROTECT NEWLY PLANTED
OUTDOOR GARDENS.
RAINFALL VARIED SIGNIFICANTLY FROM AS LOW AS 60 PERCENT OF AVERAGE
OVER DOWNEAST AND LOWER PENOBSCOT VALLEY LOCATIONS UPWARDS TO 110
PERCENT OF AVERAGE ACROSS THE NORTH AND ALONG THE NEW BRUNSWICK
BORDER AS FAR SOUTH AS DANFORTH. AT BANGOR, THE MONTHLY TOTAL OF
1.82 INCHES WAS TIED AS 13TH LOWEST WITH 1993. SIGNIFICANT
RAINFALL EVENTS OCCURRED ACROSS AT LEAST PORTIONS OF THE REGION
ON THE 5TH-6TH, 11TH-12TH, 22ND-23RD, THE 30-31ST WITH THE LAST
EVENT BEING THE HEAVIEST AND MOST WIDESPREAD EVENT WITH UPWARDS
OF ONE INCH OR SLIGHTLY GREATER RAINFALL. THE ONLY SNOW OF NOTE
AT ANY OF THE CLIMATE SITES FELL AT FRENCHVILLE, CARIBOU, AND
HOULTON ON THE 5TH WHEN RAIN ENDED AS WET SNOW OR A MIX OF WET
SNOW AND RAIN WITH NO ACCUMULATION.
THE OUTLOOK FOR THE MONTH OF JUNE FROM THE CLIMATE PREDICTION
CENTER IS CALLING FOR GREATER PROBABILITIES OF ABOVE AVERAGE
TEMPERATURES AND EQUAL PROBABILITIES OF BELOW AVERAGE, NEAR
AVERAGE, OR ABOVE AVERAGE RAINFALL FOR OUR REGION. AVERAGE
TEMPERATURES FOR JUNE RANGE FROM LOWS OF AROUND 50 AND HIGHS OF
LOWER 70S ACROSS THE NORTH TO LOWS OF LOWER 50S AND HIGHS OF MID
70S FOR CENTRAL AND INTERIOR DOWNEAST AREAS. AVERAGE RAINFALL FOR
THE REGION AS A WHOLE IS AROUND 3.50 INCHES.
$$
VJN