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What is Grand Isle, ME, Weather Like in October?

During the month of October, Grand Isle, ME, has an average daytime high temperature of 52°F and an average overnight low temperature dropping to 37°F. Around 3.46 inches of precipitation is received during the month, with about 28.07 inches falling in a typical year. Snow is not common in Grand Isle, ME.

October 2025: Actual vs. Average Temperatures

Showing temperatures through today (October 21, 2025)
Actual High Average High Actual Low Average Low

Month Summary
Average High: 58.4 F (+4.7 vs avg)
Average Low: 40.6 F (+2.6 vs avg)

Daytime temperatures were significantly above average.

Actual data from: KFVE

Grand Isle, ME Daily Weather Averages for October

Recorded at Frenchville Aroostook Ap (usw00004836), 7.7 miles W of Grand Isle, ME
Day Avg Temps (°F) Precip (in) Snow (in) Degree Days (°F)
Low High Mean Month Year Month Year Heat Cool
10/1 41 F 58 F 50 F 0.10" 24.71" N/A N/A 15.4 F 0.1 F
10/2 41 F 58 F 49 F 0.21" 24.82" N/A N/A 15.8 F 0.1 F
10/3 40 F 57 F 49 F 0.32" 24.93" N/A N/A 16.3 F 0.1 F
10/4 40 F 57 F 48 F 0.44" 25.05" N/A N/A 16.7 F N/A
10/5 40 F 56 F 48 F 0.55" 25.16" N/A N/A 17.1 F N/A
10/6 39 F 56 F 48 F 0.66" 25.27" N/A N/A 17.5 F N/A
10/7 39 F 55 F 47 F 0.78" 25.39" N/A N/A 17.9 F N/A
10/8 39 F 55 F 47 F 0.90" 25.51" N/A N/A 18.3 F N/A
10/9 38 F 54 F 46 F 1.02" 25.63" N/A N/A 18.7 F N/A
10/10 38 F 54 F 46 F 1.13" 25.74" N/A N/A 19 F N/A
10/11 38 F 53 F 46 F 1.25" 25.86" N/A N/A 19.4 F N/A
10/12 38 F 53 F 45 F 1.37" 25.98" N/A N/A 19.8 F N/A
10/13 37 F 53 F 45 F 1.49" 26.10" N/A N/A 20.2 F N/A
10/14 37 F 52 F 45 F 1.60" 26.21" N/A N/A 20.6 F N/A
10/15 37 F 52 F 44 F 1.71" 26.32" N/A N/A 20.9 F N/A
10/16 36 F 51 F 44 F 1.82" 26.43" N/A N/A 21.3 F N/A
10/17 36 F 51 F 43 F 1.94" 26.55" N/A N/A 21.7 F N/A
10/18 36 F 50 F 43 F 2.05" 26.66" N/A N/A 22 F N/A
10/19 35 F 50 F 43 F 2.16" 26.77" N/A N/A 22.4 F N/A
10/20 35 F 49 F 42 F 2.28" 26.89" N/A N/A 22.7 F N/A
10/21 35 F 49 F 42 F 2.39" 27.00" N/A N/A 23.1 F N/A
10/22 35 F 49 F 42 F 2.50" 27.11" N/A N/A 23.5 F N/A
10/23 34 F 48 F 41 F 2.62" 27.23" N/A N/A 23.8 F N/A
10/24 34 F 48 F 41 F 2.73" 27.34" N/A N/A 24.2 F N/A
10/25 34 F 47 F 40 F 2.84" 27.45" N/A N/A 24.6 F N/A
10/26 33 F 47 F 40 F 2.94" 27.55" N/A N/A 24.9 F N/A
10/27 33 F 47 F 40 F 3.05" 27.66" N/A N/A 25.3 F N/A
10/28 33 F 46 F 39 F 3.16" 27.77" N/A N/A 25.7 F N/A
10/29 32 F 46 F 39 F 3.26" 27.87" N/A N/A 26 F N/A
10/30 32 F 45 F 39 F 3.36" 27.97" N/A N/A 26.4 F N/A
10/31 32 F 45 F 38 F 3.46" 28.07" N/A N/A 26.8 F N/A