774
CXUS51 KCAR 031959
CLMBGR
CLIMATE REPORT
NATIONAL WEATHER SERVICE CARIBOU ME
359 PM EDT SAT OCT 03 2026
...............................
..THE BANGOR ME CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1925 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 99 09/07/1945
LOW 23 09/29/2000
HIGHEST 82 09/10 MM MM 82 09/28
LOWEST 34 09/24 MM MM 33 09/21
AVG. MAXIMUM 70.2 71.0 -0.8 73.0
AVG. MINIMUM 48.0 48.8 -0.8 48.4
MEAN 59.1 59.9 -0.8 60.7
DAYS MAX >= 90 0 0.4 -0.4 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.7 -0.7 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 9.88 199
MINIMUM 0.64 1929
TOTALS 5.14 1.38
DAILY AVG. 0.17 0.13 0.04 0.10
DAYS >= .01 12 9.4 2.6 5
DAYS >= .10 8 5.9 2.1 3
DAYS >= .50 3 2.3 0.7 2
DAYS >= 1.00 1 1.0 0.0 1
GREATEST
24 HR. TOTAL 2.17 09/28 TO 09/28 2.00 09/25 TO 09/26
09/28 TO 09/29
SNOWFALL (INCHES)
RECORDS
TOTAL MM MM
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0 MM
24 HR TOTAL MM MM
DEGREE DAYS
HEATING TOTAL 181 186 -5 138
SINCE 7/1 194 226 -32 MM
COOLING TOTAL 12 32 -20 17
SINCE 1/1 451 378 73 MM
............................................................
WIND (MPH)
AVERAGE WIND SPEED 7.4
HIGHEST WIND SPEED/DIRECTION 26/330 DATE 09/14
HIGHEST GUST SPEED/DIRECTION 40/330 DATE 09/14
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.57
NUMBER OF DAYS FAIR 8
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 10
AVERAGE RH (PERCENT) 71
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 8
LIGHT RAIN 15 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 19 FOG W/VIS <= 1/4 MILE 2
HAZE 0
- INDICATES NEGATIVE NUMBERS.
* INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
............................................................
..SEPTEMBER 2026 CLIMATE NARRATIVE FOR NORTHERN/EASTERN MAINE
MONTH TRENDS:
CARIBOU:
- MEAN MAXIMUM TEMPERATURES WERE 1.0 DEGREE BELOW AVERAGE.
- MEAN MINIMUM TEMPERATURES WERE 2.2 DEGREES BELOW AVERAGE. A RECORD LOW TEMPERATURE WAS TIED
ON SEPTEMBER 9TH, AT 34 DEGREES. IT TIED WITH 1946.
- AVERAGE TEMPERATURES WERE 1.6 DEGREES BELOW AVERAGE.
- PRECIPITATION WAS 2.14 INCHES BELOW AVERAGE. THIS IS THE 5TH DRIEST SEPTEMBER FOR CARIBOU ON
RECORD, WITH 1.30 INCHES.
- SNOWFALL WAS 0.1 INCH BELOW AVERAGE FOR SEPTEMBER. BELIEVE IT OR NOT, CARIBOU TYPICALLY GETS 0.1
INCHES OF SNOWFALL.
BANGOR:
- MEAN MAXIMUM TEMPERATURES WERE 0.8 DEGREES BELOW AVERAGE.
- MEAN MINIMUM TEMPERATURES WERE AROUND 0.8 DEGREES BELOW AVERAGE.
- AVERAGE TEMPERATURES WERE AROUND 0.8 DEGREES BELOW AVERAGE.
- PRECIPITATION WAS 1.38 INCHES ABOVE AVERAGE. ON SEPTEMBER 28TH, 2.17 INCHES OF RAINFALL FELL DUE
TO A NOR’EASTER STORM.
MILLINOCKET:
- MEAN MAXIMUM TEMPERATURES WERE 1.2 DEGREES BELOW AVERAGE.
- MEAN MINIMUM TEMPERATURES WERE AROUND NORMAL.
- AVERAGE TEMPERATURES WERE 0.5 DEGREES BELOW AVERAGE.
- PRECIPITATION WAS 1.13 INCHES BELOW AVERAGE.
HOULTON:
- MEAN MAXIMUM TEMPERATURES WERE 0.8 DEGREES BELOW AVERAGE
- MEAN MINIMUM TEMPERATURES WERE 2.4 DEGREES BELOW AVERAGE
- AVERAGE TEMPERATURES WERE 1.6 DEGREES BELOW AVERAGE
- PRECIPITATION WAS 1.81 INCHES BELOW AVERAGE. THIS IS THE 11TH DRIEST SEPTEMBER ON RECORD FOR
HOULTON.
WEATHER EVENTS:
- FROST/FREEZE PROGRAM BEGAN IN MAY, WITH NORTHERN ZONES ENDING IN SEPTEMBER. THE PROGRAM
ENDED ON SEPTEMBER 11TH IN THE NORTH WOODS. IT THEN ENDED IN EASTERN/SOUTHERN AROOSTOOK,
NORTHERN/CENTRAL PENOBSCOT, SOUTHERN PISCATAQUIS, AND NORTHERN WASHINGTON ON SEPTEMBER 21ST. 4
FROST ADVISORIES WERE ISSUED IN SEPTEMBER.
- OF THE 4 CLIMATE SITES, HOULTON RECORDED THE LOWEST TEMPERATURE IN SEPTEMBER AT 28 DEGREES ON THE
23RD.
- OF THE 4 CLIMATE SITES, BANGOR RECORDED THE HIGHEST TEMPERATURE IN SEPTEMBER AT 82 DEGREES ON THE
10TH.
- A SIGNIFICANT NOR’EASTER STORM MOVED THROUGH NEW ENGLAND AT THE END OF SEPTEMBER. INTERIOR AND
COASTAL DOWNEAST REGIONS GOT THE HIGHEST RAIN TOTALS IN NORTHERN AND EASTERN MAINE. PER CARIBOU
PUBLIC INFORMATION STATEMENT, THE HIGHEST TOTAL RECORDED BY THE AFTERNOON OF SEPTEMBER 28TH, WAS
ROUGHLY 2.92 INCHES FALLING IN MILBRIDGE, ME.-
THE ONGOING DROUGHT DETERIORATED THROUGHOUT SEPTEMBER. BY SEPTEMBER 1ST, SEVERE DROUGHT (D2)
WAS IN WESTERN HANCOCK COUNTY, AND UP TO SOUTHERN PENOBSCOT. MODERATE DROUGHT (D1) EXPANDED
FARTHER NORTH, INTO MOST OF NORTHERN PENOBSCOT, NORTHERN PISATAQUIS, AND MOST OF AROOSTOOK
COUNTY. THERE WERE POCKETS OF ABNORMALLY DRY (D0) CONDITIONS IN NORTHERN/EASTERN AROOSTOOK,
AND PARTS OF SOUTHERN WASHINGTON COUNTIES. BY SEPTEMBER 15TH, THE ENTIRE STATE WAS, AT MINIMUM,
IN MODERATE DROUGHT (D1). SOUTHERN/WESTERN PENOBSCOT AND HANCOCK WERE IN SEVERE DROUGHT
(D2). FAR COASTAL HANCOCK DETERIORATED TO EXTREME DROUGHT (D3). THE STATE MAINTAINED THESE
CONDITIONS THROUGH THE END OF THE MONTH.
CLIMATE OUTLOOK:
- TEMPERATURES: FOR OCTOBER, CLIMATE PREDICTION CENTER (CPC) DOES NOT SEE STRONG SIGNALS FOR
ANOMALOUS TEMPERATURES. FOR THE SEASON AHEAD, THE OUTLOOK SHOWS TEMPERATURES COULD LEAN ABOVE
CLIMATOLOGICAL NORMAL.
- PRECIPITATION: FOR OCTOBER, CPC DOES NOT SEE STRONG SIGNALS FOR ANOMALOUS PRECIPITATION. FOR THE
SEASON AHEAD, OUTLOOK ALSO DOES NOT SEE STRONG SIGNALS FOR ANOMALOUS PRECIPITATION.
- ENSO: PER CPC, EL NINO CONDITIONS ARE PRESENT, WITH AN EL NINO ADVISORY IN EFFECT. EL NINO HAS
A 90% CHANCE OF BECOMING A VERY STRONG EVENT IN THE NORTHERN HEMISPHERE 2026-2027 FALL/WINTER.
ASB
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