Climatological Report (Monthly)
Issued by NWS Caribou, ME
Issued by NWS Caribou, ME
842
CXUS51 KCAR 022048
CLMCAR
CLIMATE REPORT
NATIONAL WEATHER SERVICE CARIBOU ME
448 PM EDT WED SEP 02 2026
...................................
...THE CARIBOU ME CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 95 08/02/1975
08/16/1944
08/14/1944
LOW 34 08/25/2003
08/31/2002
08/30/1982
HIGHEST 88 08/05 MM MM 94 08/11
08/06
08/07
08/12
08/13
LOWEST 45 08/22 MM MM 38 08/19
AVG. MAXIMUM 76.8 75.7 1.1 76.6
AVG. MINIMUM 55.2 54.1 1.1 51.8
MEAN 66.0 64.9 1.1 64.2
DAYS MAX >= 90 0 0.5 -0.5 4
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 12.09 1981
MINIMUM 0.93 1957
TOTALS 3.74 0.13
DAILY AVG. 0.12 0.12 0.00 0.10
DAYS >= .01 12 13.0 -1.0 6
DAYS >= .10 6 7.5 -1.5 3
DAYS >= .50 3 2.5 0.5 3
DAYS >= 1.00 1 0.6 0.4 2
GREATEST
24 HR. TOTAL 1.06 08/17 TO 08/17 1.29 08/30 TO 08/30
SNOWFALL (INCHES)
RECORDS
TOTAL 0.0 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 40 71 -31 94
SINCE 7/1 70 113 -43 MM
COOLING TOTAL 79 68 11 77
SINCE 1/1 200 207 -7 MM
................................................................
WIND (MPH)
AVERAGE WIND SPEED 5.2
HIGHEST WIND SPEED/DIRECTION 22/310 DATE 08/04
HIGHEST GUST SPEED/DIRECTION 39/320 DATE 08/04
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.38
NUMBER OF DAYS FAIR 19
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 74
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 5 MIXED PRECIP 1
HEAVY RAIN 7 RAIN 5
LIGHT RAIN 18 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 16 FOG W/VIS <= 1/4 MILE 3
HAZE 0
- INDICATES NEGATIVE NUMBERS.
* INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
................................................................
...AUGUST 2026 CLIMATE NARRATIVE FOR NORTHERN/EASTERN MAINE...
Month Trends:
Caribou:
- Mean maximum temperatures were 1.3 degrees above average. The maximum high temperature
for the month was 88, which tied for 8th place for the overall monthly high max temperature in
August in Caribou. It tied with 2018, 2016, 2015, 2014, 2009, 1993, 1990, 1949, 1945, and 1942.
Caribou also tied its highest monthly low maximum temperature for August, at 70 degrees. It tied
with 2015.
- Mean minimum temperatures were 1.1 degrees above average. Interestingly, Caribou still tied its
4th monthly low minimum temperature, at 45 degrees. It tied with 2023, 2019, 2018, 2010, 2008,
and 1948. August also tied its 9th mean monthly minimum temperature, at 55.2 degrees. It tied
with 1988. Caribou also tied its 4th highest monthly minimum temperature for August, at 67
degrees. It tied with 2025, 2024, 2022, 1998, and 1989.
- Average temperatures were 1.1 degrees below average. Caribou recorded its 4th lowest monthly
average temperature in August, at 58.5 degrees.
- Precipitation was 0.13 inches above average.
Bangor:
- Mean maximum temperatures were 2.3 degrees above average. Bangor tied its 7th lowest
monthly maximum temperature for August. It tied with 2017, 2005, 1990, 1967, 1961, 1948,
1942, and 1939.
- Mean minimum temperatures were around 1.8 degrees above average. Bangor tied its 3rd lowest
monthly minimum temperature in August, at 49 degrees. It tied with 2022, 2018, 2012, 1985, and
1980. It also tied its 6th highest monthly minimum temperature, at 69 degrees. It tied with 2004,
2003, 2002, 1988, 1985, 1984, 1979, 1975, 1955, 1937, 1935, and 1933.
- Average temperatures were around 2.1 degrees above average. Bangor tied its 6th lowest monthly
average temperature for August, at 62 degrees. It tied with 2018, 2016, and 1948. Bangor tied its
9th highest monthly average temperature for August, at 80 degrees. It tied with 2021 and 1976.
- Precipitation was 1.81 inches below average.
Millinocket:
- Mean maximum temperatures were 1.8 degrees above average. Millinocket tied its 8th highest
monthly maximum temperature, at 91 degrees. It tied with 2024, 2020, 2015, 2009, 1998, 1997,
1996, 1977, 1970, 1959, and 1908. Millinocket also tied its 5th lowest monthly maximum
temperature at 68 degrees. It tied with 2001, 1993, 1947, 1918, and 1909.
- Mean minimum temperatures were 2.9 degrees above average. Millinocket tied its 4th lowest
minimum temperature at 47 degrees. This was tied with 2014, 2008, 1997, 1970, and 1969.
Millinocket also tied its 3rd highest monthly minimum temperature, at 70 degrees. It tied with 2024, 2018, 2009, 2003, 1984, 1976, 1970, 1955, and 1947. Lastly, Millinocket tied its 10th highest mean minimum temperature, at 58.3 degrees. It tied with 1969.
- Average temperatures were 2.3 degrees above average. Millinocket recorded its 10th highest
mean monthly average temperature record, at 68.8 degrees. The station also tied its 7th highest
average temperature record, at 80.5 degrees. It tied with 1976 and 1928. Millinocket also tied its
5th lowest monthly average temperature record, at 60 degrees. It tied with 2011 and 1948.
- Precipitation was 1.08 inches below average.
Houlton:
- Mean maximum temperatures were 2.0 degrees above average. Houlton tied its 10th mean
monthly maximum temperature, at 78.7 degrees. It tied with 2018. Houlton also tied its 8th
monthly highest maximum temperature, at 90 degrees. It tied with 2015, 1998, 1997, 1996, 1991,
1980, 1979, 1978, 1971, 1959, 1955, and 1949. Lastly, Houlton tied its 5th lowest monthly maximum
temperature at 66 degrees. It tied with 2021, 2004, 1998, 1973, 1961, and 1957.
- Mean minimum temperatures were 1.5 degrees above average. Houlton also tied its 5th highest
monthly low minimum temperature, at 41 degrees. It tied with 2021, 1967, 1964, 1961, and 1955.
It also tied its 7th highest monthly high minimum temperature, at 66 degrees. It tied with 2012,
2005, 1995, 1990, 1983, 1978, 1976, 1971, and 1965.
- Average temperatures were 1.7 degrees above average. Houlton also tied its 9th highest monthly
average temperature at 76 degrees. It tied with 2018, 1974, and 1961. Houlton records its 4th
highest monthly low average temperature, 57.5 degrees.
- Precipitation was 1.03 inches below average.
Weather Events:
- There were 11 severe thunderstorm warnings in August, with 8 issued on August 28th. The
majority of these thunderstorms were located in Piscataquis and Penobscot counties. There were a
handful of small pea size hail reports.
- There was 1 flood advisory on August 13th.
- There was 1 wind advisory in the north on August 4th.
- Overnight low temperatures began to creep down into the 30s and 40s by the end of August, with
Escourt Station recording 36F early morning on August 22nd and 29th.
- There was one heat advisory for the Doweast and Bangor region, August 7th. Highest heat index
recorded was 96F at Bar Harbor.
- The ongoing drought degraded in August. By July 28th, abnormally dry conditions (D0), were in
southeastern Piscataquis, central and southern Penobscot, southern Aroostook, and all of
Washington county. There was moderate drought (D1) in western Hancock and far southwestern
Penobscot. By August 4th, moderate drought (D1) expanded further north in western Penobscot
county. On August 11th, there was a lot of expansion, with abnormally dry conditions (D0) expanding north into northern and eastern Aroostook, northern, central, and southern Piscataquis, northern Penobscot, and coastal Washington. Moderate drought (D1) expanded to southern Aroostook, central and southern Penobscot, northern and central Hancock, and northern Washington. Far southwestern Hancock creeped into severe drought (D2). By August 18th, moderate drought (D1) crept into southern, central, and northwestern Piscataquis, portions of northern Aroostook. By August 25th, Severe drought (D2) expanded more into western Hancock county, and up to southern Penobscot.
Moderate drought (D1) expanded farther north, into most of northern Penobscot, and northern
Pisataquis.
Climate Outlook:
Temperatures: For September, Climate Prediction Center (CPC) is showing no strong signals for
above or below normal temperatures. For the season ahead, the outlook shows temperatures could
lean above climatological normal.
Precipitation: For September, CPC is forecasting no strong signals for above or below normal
precipitation. For the season ahead, outlook shows a chance for below normal precipitation
throughout northern and eastern Maine.
ENSO: Per CPC, El Nino conditions are present, with an El Nino Advisory in effect. El Nino
continues to strengthen, with a 90 percent chance of a very strong event in fall/winter 2026-2027.
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ASB