April 2025 Climate Summary for Northern and Eastern Maine

...APRIL 2025 CLIMATE NARRATIVE FOR NORTHERN/EASTERN MAINE...

APRIL 2025 FEATURED NORMAL TO ABOVE AVERAGE TEMPERATURES AND ABOVE 

NORMAL PRECIPITATION FOR NORTHERN AND EASTERN MAINE. 

TEMPERATURES ACROSS THE REGION RANGED FROM NORMAL TO 1.5 DEGREES (F) 

ABOVE THE 1991-2020 AVERAGES. NO MAJOR CLIMATE SITE FINISHED IN THE 

TOP 10 WARMEST FOR THE MONTH OF APRIL. THE WARMEST TEMPERATURES CAME 

ON THE 28TH AND 29TH WHEN MOST INLAND LOCATIONS SAW HIGH 

TEMPERATURES IN THE 70S. THE REST OF THE MONTH SAW TEMPERATURES 

FLUCTUATE WITHIN A FEW DEGREES OF NORMAL DAILY VALUES.

PRECIPITATION (RAIN AND MELTED SNOW) WAS GENERALLY 110 TO 160 

PERCENT OF NORMAL. IN CARIBOU, 4.01 INCHES OF PRECIPITATION FELL 

DURING THE MONTH. THIS TIED APRIL 1982 FOR THE 10TH WETTEST APRIL ON 

RECORD. RECORDS IN CARIBOU DATE BACK TO 1939. IN HOULTON, 4.46 

INCHES OF PRECIPITATION FELL. THIS MADE APRIL 2025 THE 6TH WETTEST 

APRIL ON RECORD AND THE WETTEST APRIL SINCE 2005. RECORDS IN HOULTON 

DATE BACK TO 1948. 

PRECIPITATION IN BANGOR AND MILLINOCKET FOR THE MONTH FELL SHORT OF 

THE TOP 10 WETTEST APRILS ON RECORD. RECORDS IN BANGOR DATE TO 1925. 

IN MILLINCOKET, RECORDS DATE TO 1903.

SNOWFALL WAS GENERALLY NEAR AVERAGE FROM AROUND MOOSEHEAD LAKE 

NORTHWARD, AND BELOW AVERAGE TO THE SOUTH. IN CARIBOU, 8.7 INCHES OF 

SNOW FELL DURING THE MONTH, SLIGHTLY ABOVE THE (1991-2020) AVERAGE 

SNOWFALL OF 8.3 INCHES. IT WAS THE SNOWIEST APRIL IN CARIBOU SINCE 

2021 (8.9 INCHES). IN BANGOR, 1.0 INCH OF SNOW FELL, WHICH WAS BELOW 

THE AVERAGE OF 3.7 INCHES. 

THE LARGEST SNOW EVENT OF THE MONTH IN NORTHERN AROOSTOOK COUNTY 

OCCURRED ON THE 5TH AND 6TH. GENERALLY 3 TO 5 INCHES OF SNOW FELL 

NORTH OF MARS HILL. THE NATIONAL WEATHER SERVICE OFFICE IN CARIBOU 

RECEIVED 4.9 INCHES OF SNOW LITTLE OR NO SNOW WAS REPORTED WITH THIS 

EVENT FURTHER SOUTH. THE FINAL SNOW EVENT OF THE MONTH CAME ON THE 

13TH AND 14TH. 2 TO 4 INCHES OF SNOW FELL OVER NORTHEASTERN 

AROOSTOOK COUNTY, INCLUDING 3 INCHES IN CARIBOU. AMOUNTS OUTSIDE OF 

THIS AREA WERE UNDER 2 INCHES.

FURTHER SOUTH, THE LARGEST SNOW EVENT OCCURRED ON THE 8TH AND 9TH. A 

BAND OF 3 TO 7 INCHES OF SNOW FELL FROM THE MOOSEHEAD LAKE AREA 

EASTWARD TO NORTHERN PENOBSCOT COUNTY AND WASHINGTON COUNTY. 1 TO 3 

INCHES OF SNOW FELL SOUTH OF THE BAND, INCLUDING 1.0 INCH AT BANGOR 

INTERNATIONAL AIRPORT. AMOUNTS TO THE NORTH OF THE BAND WERE LESS 

THAN 3 INCHES, WITH NO MEASURABLE SNOW BEING REPORTED OVER 

NORTHEASTERN AROOSTOOK COUNTY.

AT THE START OF THE MONTH, THERE WAS NO SNOW ON THE GROUND NEAR 

BANGOR AND DOWNEAST. ANYWHERE FROM A TRACE TO 6 INCHES WERE ON THE 

GROUND FROM THE CENTRAL HIGHLANDS INTO EASTERN AROOSTOOK COUNTY. IN 

THE NORTH WOODS, 6 TO 18 INCHES WERE ON THE GROUND, WITH THE 

GREATEST AMOUNTS AT HIGHER ELEVATIONS. THERE WAS A TRACE TO 2 INCHES 

OF SNOW WATER EQUIVALENT IN THE CENTRAL HIGHLANDS TO EASTERN 

AROOSTOOK COUNTY. HIGHER ELEVATIONS IN THE NORTH WOODS HAD 5 TO 7 

INCHES OF SNOW-WATER EQUIVALENT AT THE START OF APRIL. 

SNOW COVER ACROSS THE NORTH PEAKED FOLLOWING THE SNOW EVENT ON THE 

5TH AND 6TH. MOST PLACES HAD 5 TO 15 INCHES OF SNOW ON THE GROUND, 

WITH SOME HIGHER TERRAIN SPOTS SEEING UP TO 20 INCHES OF SNOW COVER. 

SNOW-LIQUID EQUIVALENTS AT THAT TIME WERE GENERALLY 1 TO 5 INCHES, 

WITH UP TO 8 INCHES In THE HIGHER TERRAIN OF THE NORTH WOODS. THIS 

SNOW COVER WAS COMPLETELY GONE BY THE END OF THE MONTH.

REMAINING ICE ON THE SAINT JOHN AND ALLAGASH RIVERS WAS OUT BY THE 

THIRD WEEK OF APRIL. MOOSEHEAD LAKE REPORTED ICE OUT ON APRIL 29TH. 

THIS WAS THE LATEST ICE OUT FOR MOOSEHEAD LAKE SINCE 2020 (MAY 4TH). 

HOWEVER, THIS WAS NOWHERE NEAR THE RECORD LATE ICE OUT OF 1878 (MAY 

29TH). A FEW LAKES IN THE NORTH WOODS STILL HAD SOME ICE LEFT AT THE 

END OF THE MONTH.

THE CLIMATE PREDICTION CENTER'S (CPC) OUTLOOK FOR MAY 2025 INDICATES 

THAT THERE IS AN ELEVATED RISK OF ABOVE AVERAGE TEMPERATURES IN 

NORTHERN AND EASTERN MAINE. HOWEVER, THE CPC'S OUTLOOK SHOWS NO 

STRONG CLIMATE SIGNALS FOR ABOVE OR BELOW AVERAGE PRECIPITATION 

(RAIN AND MELTED SNOW). 

AT THE START OF THE MONTH OF MAY, AVERAGE HIGHS RANGE FROM THE MID 

50S IN THE NORTH, TO AROUND 60 DEGREES IN BANGOR. AVERAGE LOWS RANGE 

FROM THE MID 30S IN THE NORTH TO NEAR 40 DEGREES AT THE COAST. BY 

THE END OF THE MONTH, AVERAGE HIGHS RISE TO THE UPPER 60S FOR MOST 

OF THE AREA, AND NEAR 70 DEGREES IN BANGOR.

ON AVERAGE, 3 TO 4 INCHES OF LIQUID PRECIPITATION IS OBSERVED ACROSS 

THE AREA DURING THE MONTH OF MAY. SNOW CAN STILL FALL DURING THE 

MONTH OF MAY. HOWEVER, ANY SNOW GENERALLY MELTS QUICKLY AFTER IT 

FALLS OWING TO HIGHER SUN ANGLE AND WARMER TEMPERATURES. AT CARIBOU, 

THE AVERAGE SNOWFALL FOR MAY IS 0.8 INCHES. MEASURABLE SNOW HAS 

OCCURRED IN 23 YEARS SINCE 1939, MOST RECENTLY IN 2020. AT LEAST A 

TRACE OF SNOW HAS FALLEN IN AT LEAST 63 YEARS SINCE RECORDS BEGAN, 

MOST RECENTLY IN 2023. FROST CAN OCCUR AT ANY TIME OF THE MONTH 

ACROSS NORTHERN VALLEYS, BUT BECOMES LESS COMMON BY MID TO LATE 

MONTH ACROSS THE DOWNEAST REGION. THUNDERSTORMS BECOME INCREASINGLY 

COMMON IN MAY AWAY FROM THE COAST, ESPECIALLY LATER IN THE MONTH.