Climatological Report (Seasonal)
Issued by NWS Caribou, ME
Issued by NWS Caribou, ME
806
CXUS51 KCAR 041819
CLSBGR
CLIMATE REPORT
NATIONAL WEATHER SERVICE CARIBOU ME
219 PM EDT THU SEP 04 2025
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...THE BANGOR ME CLIMATE SUMMARY FOR THE SEASON, FROM
6/1/2025 TO 8/31/2025...
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
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TEMPERATURE (F)
RECORD
HIGH 104 08/19/1935
LOW 29 06/03/1939
HIGHEST 98 06/24 MM MM 96 06/20
LOWEST 39 06/03 MM MM 40 06/02
AVG. MAXIMUM 78.8 78.2 0.6 79.3
AVG. MINIMUM 55.7 56.1 -0.4 58.7
MEAN 67.3 67.1 0.2 69.0
DAYS MAX >= 90 8 5.4 2.6 3
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 17.07 2006
MINIMUM 7.78 2016
TOTALS 5.44* 10.09 -4.65 11.69
DAILY AVG. 0.06 0.11 -0.05 0.13
DAYS >= .01 22 32.9 -10.9 44
DAYS >= .10 10 19.8 -9.8 22
DAYS >= .50 4 7.0 -3.0 7
DAYS >= 1.00 1 2.2 -1.2 3
GREATEST
24 HR. TOTAL 1.32 2.35 08/09 TO 08/10
SNOWFALL (INCHES)
RECORDS
TOTAL T 2017
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 135 140 -5 57
SINCE 7/1 40 38 2 MM
COOLING TOTAL 370 338 32 454
SINCE 1/1 372 346 26 MM
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WIND (MPH)
AVERAGE WIND SPEED 6.8
HIGHEST WIND SPEED/DIRECTION 29/340 DATE 08/17
HIGHEST GUST SPEED/DIRECTION 41/290 DATE 06/20
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.53
NUMBER OF DAYS FAIR 26
NUMBER OF DAYS PC 44
NUMBER OF DAYS CLOUDY 22
AVERAGE RH (PERCENT) 70
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 7 MIXED PRECIP 0
HEAVY RAIN 6 RAIN 10
LIGHT RAIN 36 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 50 FOG W/VIS <= 1/4 MILE 7
HAZE 21
- INDICATES NEGATIVE NUMBERS.
* INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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...NORTHERN AND EASTERN MAINE SUMMER 2025 CLIMATE NARRATIVE...
THE METEOROLOGICAL SUMMER (JUNE - AUGUST) SEASON WRAPPED UP WITH SLIGHTLY ABOVE AVERAGE TEMPERATURES, AND SIGNIFICANTLY BELOW AVERAGE PRECIPITATION, PREDOMINANTLY AT BANGOR, MILLINOCKET, AND HOULTON.
AVERAGE TEMPERATURES MOSTLY AROUND NORMAL, WITH A SLIGHT WARM ANOMALY. CARIBOU WAS 0.3F ABOVE NORMAL, WITH A SEASONAL AVERAGE TEMPERATURE OF 64.6F. BANGOR WAS 0.2F ABOVE NORMAL AT 67.3F. MILLINOCKET WAS THE WARMEST STATION, 0.9F ABOVE NORMAL, AT 66.7F. LASTLY, HOULTON WAS ABOUT 0.6F ABOVE AVERAGE, WITH A SEASONAL AVERAGE TEMPERATURE OF 64.2F.
THIS SUMMER SEASON HAD SOME ABOVE AVERAGE MAXIMUM TEMPERATURES WITH SOME HOT SPELLS THAT OCCURRED THROUGHOUT THE STATE. ONE SUCH HOT DAY WAS JUNE 24TH. BANGOR SAW A HIGH OF 98F THAT DAY, WHICH TIED THE RECORD HIGH TEMPERATURE FOR THE MONTH OF JUNE. THE RECORD WAS PREVIOUSLY SET ON JUNE 27TH, 1941. IN ADDITION, IT WAS THE HOTTEST DAY IN BANGOR SINCE JULY 14TH, 1995 (99F). RECORDS IN BANGOR DATE BACK TO 1925. HOULTON SAW A HIGH TEMPERATURE OF 92F, WHICH SET A NEW DAILY RECORD. HIGH TEMPERATURES FELL SHORT OF RECORDS IN MILLINOCKET AND CARIBOU ON JUNE 24TH.
ANOTHER HOT STRETCH OCCURRED AUGUST 10TH-13TH, WHERE CARIBOU WAS ABOVE 90F FOR FOUR CONSECUTIVE DAYS. THIS TIED THE RECORD FOR LONGEST STREAK OF DAYS AT OR ABOVE 90F IN CARIBOU. ADDITIONALLY, IT WAS THE WARMEST FOUR-DAY STRETCH ON RECORD FOR CARIBOU WHEN AVERAGING BOTH HIGH AND LOW TEMPERATURES (79.0F). THE PREVIOUS WARMEST STRETCH WAS JULY 26TH-29TH, 1963 (78.9F). RECORDS IN CARIBOU DATE BACK TO 1939.
IN TERMS OF SEVERE WEATHER ACTIVITY, THERE WERE OVERALL ABOUT 40 SEVERE THUNDERSTORM WARNINGS ISSUED, 3 FLASH FLOOD WARNINGS ISSUED, AND 6 TORNADO WARNINGS ISSUED. ON JUNE 5TH, MULTIPLE THUNDERSTORMS ROLLED THROUGH NORTHERN MAINE, RESULTING IN NUMEROUS TREES DOWN, COVERING VARIOUS ROADS THROUGHOUT THE NORTH. FLASH FLOODING ON JULY 3RD RESULTED IN DAMAGED AND ERODED TREES, WITH INDICATIONS OF WATER MOVEMENT OVER ROADS IN PISCATAQUIS COUNTY. FLASH FLOODING ON JULY 17TH CAUSED SIGNIFICANT FLOOD DAMAGE IN NORTHERN SOMERSET COUNTY, WITH MULTIPLE CULVERTS AND DITCHES DESTROYED. ON THIS SAME DAY, 6 TORNADO WARNINGS WERE ISSUED BASED ON SEVERE THUNDERSTORMS WITH ROTATION SIGNATURES. NONE OF THESE TORNADOES WERE OFFICIALLY VERIFIED, HOWEVER. HURRICANE ERIN DID MOVE TO OUR SOUTHWEST IN THE ATLANTIC OCEAN, MAINLY CAUSING SOME HIGH SURF ADVISORIES ALONG OUR COASTLINES.
A BIG STORY FOR THE SUMMER SEASON WAS THE SIGNIFICANTLY BELOW AVERAGE RAINFALL. THROUGHOUT THE SUMMER SEASON, CARIBOU GOT THE MOST RAIN OUT OF OUR STATIONS, RECEIVING 10.24 INCHES OF RAIN, WHICH IS ABOUT 1.49 INCHES BELOW CLIMATOLOGICAL NORMAL. BANGOR ONLY RECEIVED 5.44 INCHES OF RAIN THIS SUMMER, RESULTING IN A 4.65 DEFICIT FROM CLIMATOLOGICAL NORMAL. MILLINOCKET RECEIVED 7.64 INCHES OF RAIN, WHICH IS 4.52 INCHES OF RAIN BELOW NORMAL. LASTLY, HOULTON GOT 8.57 INCHES OF RAIN THIS SUMMER, WHICH IS A 2.62 INCH DEFICIT FROM NORMAL. STARTING IN JUNE, NORTHERN MAINE WAS NOT IN DROUGHT. AS OF THE END OF AUGUST, THIS IS NOW OFFICIALLY THE 3RD DRIEST SUMMER FOR BANGOR, BEHIND 1949 AND 1957. COASTAL MAINE FINISHED SUMMER 2025 IN A D2 SEVERE DROUGHT. MEANWHILE, DOWNEAST AND CENTRAL MAINE IN A D1 MODERATE DROUGHT, AND NORTHEASTERN MAINE IN D0 ABNORMALLY DRY. THE NORTH WOODS REGION IN NORTHWESTERN AROOSTOOK WAS THE ONLY DROUGHT-FREE REGION AT SUMMERS END.
FOR THE NEXT SEASONAL OUTLOOK GIVEN BY THE CLIMATE PREDICTION CENTER (CPC), LOOKING AT AN ELEVATED RISK OF ABOVE AVERAGE TEMPERATURES FOR METEOROLOGICAL FALL (SEPTEMBER THROUGH NOVEMBER). THERE IS NOT A STRONG SIGNAL FOR ABOVE OR BELOW AVERAGE PRECIPITATION FOR THIS TIME FRAME, HOWEVER. TYPICAL AVERAGE TEMPERATURES IN THE CARIBOU AREA ARE IN THE 50S IN SEPTEMBER, 40S IN OCTOBER, AND 30S IN NOVEMBER. FROST DOES START TO BECOME A CONCERN BEGINNING IN SEPTEMBER, AS OVERNIGHT LOWS BEGIN TO CREEP DOWN TO BELOW FREEZING. SNOW IS EXPECTED TO BEGIN TO FALL IN METEOROLOGICAL FALL. NORMAL AMOUNTS OF SNOW IN THE CARIBOU AREA BEGINS IN OCTOBER, WITH TYPICALLY ONLY 1-2 INCHES FALLING, AND NOVEMBER TYPICALLY SEEING UP TO 10 INCHES BAKED ON CLIMATE NORMALS.
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ASB/NC