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CXUS51 KCAR 021628
CLMBGR

CLIMATE REPORT
NATIONAL WEATHER SERVICE CARIBOU ME
1228 PM EDT TUE JUN 02 2026

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

...THE BANGOR ME CLIMATE SUMMARY FOR THE MONTH OF MAY 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             96   05/22/1992
 LOW              23   05/03/1946
                       05/02/1943
                       05/01/1943
HIGHEST           89   05/19         MM      MM       83  05/28
LOWEST            30   05/02         MM      MM       34  05/01
                       05/09
AVG. MAXIMUM    65.3               65.7    -0.4     64.0
AVG. MINIMUM    42.1               43.3    -1.2     45.8
MEAN            53.7               54.5    -0.8     54.9
DAYS MAX >= 90     0                0.3    -0.3        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     4                1.7     2.3        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        7.65   1989
 MINIMUM        0.53   1982
TOTALS          2.71                      -0.63
DAILY AVG.      0.09               0.11   -0.02     0.18
DAYS >= .01       14               12.4     1.6       15
DAYS >= .10        5                8.0    -3.0       10
DAYS >= .50        1                2.0    -1.0        4
DAYS >= 1.00       1                0.5     0.5        1
GREATEST
 24 HR. TOTAL   1.35   05/24 TO 05/25               1.12  05/31 TO 05/31

SNOWFALL (INCHES)
RECORDS
 TOTAL           5.2   1963
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1       70.8               74.6    -3.8       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    361                333      28      308
 SINCE 7/1      7716               7527     189       MM
COOLING TOTAL     17                  7      10        2
 SINCE 1/1        17                  7      10       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.1
HIGHEST WIND SPEED/DIRECTION    26/120    DATE  05/14
HIGHEST GUST SPEED/DIRECTION    MM        DATE   MM

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.63
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             18
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       7
LIGHT RAIN               22     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      3
HAZE                      2

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

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

...MAY 2026 CLIMATE NARRATIVE FOR NORTHERN/EASTERN MAINE...

May Trends:

Caribou:
- Snowfall was 0.8 inches below normal. No snow fell in May 2026.
- Mean maximum temperatures were 1.9 degrees below average.
- Mean minimum temperatures were 2.4 degrees below average. A daily record low was reached
on May 23rd at Caribou, measuring 30 degrees. The old record was 31 degrees in 2007.
- Average temperatures were 2.2 degrees below average. Another daily minimum record was tied
on May 30th, when the station recorded 32 degrees, tied with 1967.
- Precipitation was 1.58 inches above average. This was the 10th wettest May on record, recording
5.04 inches of rainfall. A daily record for precipitation was broken May 7th, when 1.3 inches of
rain fell. The previous record was 1.03 inches in 2017. There was another daily maximum
rainfall record broken on May 27th, as 1.25 inches of rain fell, beating the previous record of 1.17
inches in 1947.

Bangor:
- Snowfall was average. No snow typically falls in Bangor in May, and no snow fell in May 2026.
- Mean maximum temperatures were 0.4 degrees below average. There was a daily high
temperature record tied in Bangor on May 19th, recording 89 degrees. It ties with the previous
record in 1962. There was another daily high temperature record broken on May 20th, recording
87 degrees. The previous record was 86 degrees in 1996.
- Mean minimum temperatures were around 1.2 degrees below average.
- Average temperatures were around 0.8 degrees below average.
- Precipitation was 0.63 inches below average. However, a daily record for rainfall was broken on
May 20th, when 1.26 inches of rain fell, compared to the 1.02 inches of rain in 1949.

Millinocket:
- Mean maximum temperatures were 0.7 degrees below average.
- Mean minimum temperatures were 1.3 degrees below average.
- Average temperatures were 1 degree below average.
- Precipitation was 0.58 inches above average.

Houlton:
- Mean maximum temperatures were 0.5 degrees below average.
- Mean minimum temperatures were 1.7 degrees below average.
- Average temperatures were 1.1 degrees below average.
- Precipitation was 0.6 inches above average.

Weather Events:
- There was one severe thunderstorm warning on May 5th. The storm moved through the North
Woods region during the afternoon.
- Frost/freeze program began in May, and most of the Downeast region began receiving frost
headlines by May 11st. The program expanded to the Central Highlands, Upper Penobscot Valley,
and southern to eastern Aroostook by May 21st. The North Woods was included in the program
June 1st. 4 frost advisories were issued in May, and 1 freeze warning was issued.-
The ongoing drought improved slightly in May. By the end of April, portions of northern, central,
and southern Aroostook, northern and central Penobscot, northern Hancock, and northern and
central Washington all improved to abnormally dry (D0) conditions. Western Aroostook, northern
Somerset, northern and central Piscataquis, most of southern Penobscot, coastal Hancock and
Washington counties were in moderate (D1) drought. Southern Piscataquis and western Penobscot
were in severe drought (D2). By the beginning of May, the majority of interior and coastal
Hancock county, along with central Washington county, improved to Abnormally Dry (D0)
conditions. By May 12th, central and southern Aroostook, portions of northern Penobscot, and
northern Washington counties, improved to no drought. By May 19th, most of central Washington
improved to no drought conditions.

Climate Outlook:
- Temperatures: For May, Climate Prediction Center (CPC) is forecasting above normal
temperatures in northern and eastern Maine. For the season ahead, the outlook shows
temperatures could also lean above climatological normal.
- Precipitation: For May, CPC is forecasting below normal precipitation in western and northern
Maine, with no strong signals for central and Downeast Maine. For the season ahead, outlook
shows a chance for above normal precipitation throughout northern and eastern Maine.
- ENSO: Per CPC, ENSO-neutral conditions are present, with an El Nino Watch in effect.. El Nino
has a 82% chance of developing in May-July, persisting through the end of the year.

$$

ASB