Climatological Report (Monthly)
Issued by NWS Caribou, ME

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952
CXUS51 KCAR 010947
CLMCAR

CLIMATE REPORT...PRELIMINARY
NATIONAL WEATHER SERVICE CARIBOU ME
500 AM EDT TUE JUN 01 2021

...................................

...THE CARIBOU ME CLIMATE SUMMARY FOR THE MONTH OF MAY 2021...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             96   05/22/1977
 LOW              18   05/02/1974
HIGHEST           86   05/26         MM      MM       91  05/28
LOWEST            30   05/04         MM      MM       29  05/08
                                                          05/10
                                                          05/12
AVG. MAXIMUM    64.9               63.0     1.9     63.0
AVG. MINIMUM    40.3               41.4    -1.1     39.6
MEAN            52.6               52.2     0.4     51.3
DAYS MAX >= 90     0                0.2    -0.2        2
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     4                3.7     0.3        9
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        6.27   1947
 MINIMUM        0.47   1982
TOTALS          3.51                       0.05
DAILY AVG.      0.11               0.11   -0.00     0.07
DAYS >= .01       14               14.7    -0.7       14
DAYS >= .10        9                8.7     0.3        6
DAYS >= .50        2                2.1    -0.1        0
DAYS >= 1.00       0                0.3    -0.3        0
GREATEST
 24 HR. TOTAL   0.79   05/05 TO 05/06               0.49  05/01 TO 05/02

SNOWFALL (INCHES)
RECORDS
 TOTAL          10.9   1967
TOTALS             T                0.8    -0.8      5.9
SINCE 7/1      107.9              118.2   -10.3       MM
SNOWDEPTH AVG.     0                                  MM
DAYS >= 1.0        0                0.2    -0.2       MM
GREATEST
 SNOW DEPTH        0                                  MM  MM
 24 HR TOTAL      MM                                  MM

DEGREE DAYS
HEATING TOTAL    399                403      -4      462
 SINCE 7/1      8008               8901    -893       MM
COOLING TOTAL     23                  6      17       46
 SINCE 1/1        23                  6      17       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.3
HIGHEST WIND SPEED/DIRECTION    28/010    DATE  05/23
HIGHEST GUST SPEED/DIRECTION    36/320    DATE  05/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.45
NUMBER OF DAYS FAIR           13
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       7
LIGHT RAIN               20     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      1
HAZE                      0

-  INDICATES NEGATIVE NUMBERS.
*  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

...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



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