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CXUS51 KCAR 020748
CLMBGR

CLIMATE REPORT NATIONAL WEATHER SERVICE CARIBOU ME 340 AM EDT THU
OCT 02 2025

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

...THE BANGOR ME CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1925 TO
2025

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   09/28         MM      MM       85  09/17

                                                          09/18

LOWEST            33   09/21         MM      MM       42  09/23

AVG. MAXIMUM    73.0               71.0     2.0     73.4

AVG. MINIMUM    48.4               48.8    -0.4     49.6

MEAN            60.7               59.9     0.8     61.5

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          3.06                      -0.70

DAILY AVG.      0.10               0.13   -0.03     0.04

DAYS >= .01        5                9.4    -4.4        4

DAYS >= .10        3                5.9    -2.9        2

DAYS >= .50        2                2.3    -0.3        1

DAYS >= 1.00       1                1.0     0.0        1

GREATEST 24 HR. TOTAL   2.00   09/25 TO 09/26               1.14
09/26 TO 09/26

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    138                186     -48      122

 SINCE 7/1       178                226     -48       MM

COOLING TOTAL     17                 32     -15       28

 SINCE 1/1       389                378      11       MM

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

WIND (MPH) AVERAGE WIND SPEED              5.4

HIGHEST WIND SPEED/DIRECTION    25/350    DATE  09/30

HIGHEST GUST SPEED/DIRECTION    33/350    DATE  09/06


SKY COVER POSSIBLE SUNSHINE (PERCENT)   MM

AVERAGE SKY COVER           0.47

NUMBER OF DAYS FAIR           11

NUMBER OF DAYS PC             13

NUMBER OF DAYS CLOUDY          6


AVERAGE RH (PERCENT)     72


WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM              1
MIXED PRECIP               0          HEAVY RAIN                2
RAIN                       1           LIGHT RAIN 10     FREEZING
RAIN              0          LT FREEZING RAIN   0     HAIL   0 HEAVY
SNOW   0     SNOW 0         LIGHT SNOW   0 SLEET          0 FOG  25
FOG W/VIS <= 1/4 MILE 8           HAZE     4


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


................................................................
...SEPTEMBER 2025 CLIMATE NARRATIVE FOR NORTHERN/EASTERN MAINE...
The September 2025 season wrapped up with above average temperatures
throughout northern and eastern Maine. Drought conditions also
continued, and expanded throughout the state, with significantly
below average precipitation deficits at all climate sites.

Temperatures were above normal at all sites, with average mean
temperatures generally 0.5-1 degrees Fahrenheit above normal.
Monthly maximum temperatures were significantly above normal by 2-3
degrees. Houlton was the warmest station, ranging 3.1 degrees above
normal. Millinocket was the next warmest, with max temperatures
being 2.7 degrees above normal. Lastly, Caribou and Bangor both tied
2.1 degrees above climate normals for their daytime highs.

Monthly minimum temperatures were generally 0.5-1.5. degrees below
climate normals. Caribou had the largest deviation, being around 1.5
degrees colder than climate normals. Houlton was next, around 1
degree cooler than normal. Millinocket and Bangor had minor
deviations, only about 0.3 degrees below average.

Precipitation totals are the main highlight of September, as the
drought that began in August worsened throughout the month. All
climate sites underwent continued precipitation deficits. Houlton
had the largest deficit, only receiving 1.67 inches of rain the
entire month, which is 1.73 inches below normal. This is the 13th
driest September for Houlton on record, since 1948. Caribou received
1.77 inches of precipitation, being 1.67 inches below normal for
precipitation normals, making it Caribous 11th driest September
since 1939. NWS Caribou observations reported 3.52 inches of
moisture evaporation throughout the month, further exacerbating the
precipitation deficit. Central Maine did receive some wetting rains
throughout the month, but none of said storms were drought busters.
Millinocket received 2.21 inches of rain, still resulting in a 1.4
inches deficit. Bangor received the most rain of all the sites, with
a sum of 3.06 inches falling throughout the month, resulting in only
a 0.70 inch deficit.

In terms of the drought, at the end of August, the North Woods
region was not under drought. Central and eastern Aroostook,
alongside northern Piscataquis, Somerset, and Penobscot, were
abnormally dry. Central Maine and Downeast were in moderate drought,
and coastal Downeast was in severe drought. By September 2nd, severe
drought expanded up into central Maine, and the interior Downeast.
By the end of September, abnormally dry conditions expanded into the
North Woods and remained in northern Piscataquis, Penobscot,
Somerset and eastern Aroostook. Moderate drought conditions were in
southern Aroostook, central Piscataquis and Penobscot. Severe
drought extended through central Maine in the Penobscot region,
interior Downeast, and Washington countys coastal area. Lastly,
Hancock countys coastline upgraded to extreme drought conditions by
the end of the month.. No significant severe weather events occurred
in September.

Looking ahead, the Climate Prediction Center (CPC) is anticipating
above average temperatures during October. There are no strong
signals for above or below average precipitation in Maine.
Typically, northern and eastern Maine experiences maximum
temperatures in the 50s, and overnight minimum temperatures in the
30s throughout October. Snowfall does typically begin in northern
and eastern Maine in October, with a climatological normal of
roughly 0.5-2 inches falling between Caribou and Bangor by the end
of the month.

$$

ASB