July 2025 Climate Summary for Northern and Eastern Maine

July 2025 Monthly Narrative for Northern and Eastern Maine

The July 2025 season wrapped up with above average temperatures. 

There was near average precipitation in northern Maine, but 

significantly below average precipitation in central and southern 

Maine. 

Temperatures were above average throughout northern and central 

Maine, with monthly averages generally ranging from 0.5-2 degrees 

Fahrenheit above climatological normals. Monthly maximum 

temperatures were above normal by generally 1-2 degrees, with 

greatest deviations  found in Millinocket, around 1.8 degrees 

Fahrenheit. Both Caribou and Bangor recorded deviations around 1.5 

degrees Fahrenheit above normal. Houlton high temperatures were also 

above average by 0.9 degrees Fahrenheit. July 7th was one of the 

hottest days for northern and central Maine this month, with 

temperatures that reached into heat advisory criteria Downeast. 

Monthly minimum temperatures were generally 1.3-2.3 degrees 

Fahrenheit above normal, indicating some warmer overnight lows 

throughout the month, with Millinocket and Houlton seeing the 

highest deviations around 2.3 degrees Fahrenheit. Caribou and Bangor 

were 1.3 and 1.5 degrees above normal, respectively.  

Rainfall for the region was about average in northern Maine, around 

the North Woods, central Aroostook, and northern portions of the 

Central Highlands. Central Maine was below average, and Bangor 

region and Downeast Maine were significantly below normal. Caribou 

averaged 4.47 inches of rain this July, which is roughly 0.24 inches 

above average based on climatological normals. That being said, 

Caribou evaporation amounts totaled up to 5.77 inches in July this 

year, resulting in a precipitation deficit for the area. Houlton 

averaged 4.00 inches of precipitation, which is 0.37 inches above 

normal. Things get drier as we enter central and southern Maine 

however, with Bangor only averaging 0.81 inches of rain this July, 

which is 2.35 inches below normal. This is the 4th driest July on 

record for Bangor, since 1926. Millinocket only averaged 1.84 inches 

of precipitation, which is 2.59 inches below normal, and the 11th 

driest July on record since 1903. On July 1st, northern Maine was 

not in any drought, and as of July 29th, there are still no drought 

conditions indicated in Maine. Short term composite drought 

indicators have a potential for some abnormally dry conditions to 

persist in central and southern Maine, but clearing up by the 

mid/long term period. 

For the August seasonal outlook, the Climate Prediction Center (CPC) 

is predicting above average temperatures for the northeast. There 

are no strong signals for above or below average precipitation 

chances for August. Average temperatures for August are usually in 

the mid to upper 60s. Average high temperatures are generally in the 

mid to upper 70s, and average low temperatures are generally in the 

mid 50s.

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ASB