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Weather in Portland, Maine for October 2025

Your guide to Portland weather in October - trends and predictions

    Temperatures

  • Until now, October 2025 in Portland has been nearly identical to the historical average, with a temperature of 15.8 °F (showing only a slight deviation of 0.4 °F).

  • The forecast for the next days in Portland predicts temperatures to be around 14 °F, close to the historical average.

  • In general, the average temperature in Portland at the beginning of October is 16.7 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 15.4 °F by the end of October.

    • Rain 🌧️

  • With an average of 5 rainy days, Portland experiences minimal rainfall in October.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
26
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
14°/8°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Portland Weather October

Move between months or click on a day
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Mist
15°
2
Fog
14°
3
Mist
18°
4
Fog
19°
5
Fog
19°
6
Partly cloudy
16°
7
Moderate or heavy rain shower
16°
8
Overcast
16°
9
Cloudy
14°
10
Overcast
15°
11
Partly cloudy
16°
12
Sunny
14°
13
Overcast
11°
14
Overcast
12°
15
Partly cloudy
11°
16
Overcast
12°
17
Sunny
16°
18
Sunny
14°
19
Sunny
16°
20
Heavy rain
15°
21
Patchy rain possible
15°
22
Moderate rain
12°
23
Patchy rain possible
15°
24
Patchy rain possible
13°
25
Partly cloudy
13°
26
Sunny
15°
27
Sunny
14°
28
Sunny
12°
29
Sunny
17°
30
Light rain
15°
31
Cloudy
22°

Temperatures trend during October in Portland

See the weather trend as well as the moving average line

October weather in Portland day by day

Click on a date for more information
September November
Date Weather Temperatures Rain UV More
Oct. 1 Mist
Mist
 15° /9° 0 mm 4
Oct. 2 Fog
Fog
 14° /8° 0 mm 4
Oct. 3 Mist
Mist
 18° /11° 0 mm 5
Oct. 4 Fog
Fog
 19° /13° 0 mm 5
Oct. 5 Fog
Fog
 19° /13° 0 mm 5
Oct. 6 Partly cloudy
Partly cloudy
 16° /11° 0 mm 4
Oct. 7 Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /13° 45.7 mm 4
Oct. 8 Overcast
Overcast
 16° /11° 36.8 mm 4
Oct. 9 Cloudy
Cloudy
 14° /7° 0 mm 4
Oct. 10 Overcast
Overcast
 15° /6° 0 mm 4
Oct. 11 Partly cloudy
Partly cloudy
 16° /7° 0 mm 5
Oct. 12 Sunny
Sunny
 14° /8° 0 mm 4
Oct. 13 Overcast
Overcast
 11° /7° 38.7 mm 3
Oct. 14 Overcast
Overcast
 12° /7° 1.5 mm 3
Oct. 15 Partly cloudy
Partly cloudy
 11° /5° 0 mm 3
Oct. 16 Overcast
Overcast
 12° /7° 0 mm 0.5
Oct. 17 Sunny
Sunny
 16° /7° 0 mm 0.7
Oct. 18 Sunny
Sunny
 14° /7° 0 mm 0.6
Oct. 19 Sunny
Sunny
 16° /11° 0 mm 0.6
Oct. 20 Heavy rain
Heavy rain
 15° /13° 34.4 mm 0
Oct. 21 Patchy rain possible
Patchy rain possible
 15° /10° 0.3 mm 3
Oct. 22 Moderate rain
Moderate rain
 12° /10° 6.6 mm 3
Oct. 23 Patchy rain possible
Patchy rain possible
 15° /9° 0.1 mm 3
Oct. 24 Patchy rain possible
Patchy rain possible
 13° /9° 0.4 mm 3
Oct. 25 Partly cloudy
Partly cloudy
 13° /8° 0.1 mm 4
Oct. 26 Sunny
Sunny
 15° /8° 0 mm 4
Oct. 27 Sunny
Sunny
 14° /8° 0 mm 4
Oct. 28 Sunny
Sunny
 12° /6° 0 mm 3
Oct. 29 Sunny
Sunny
 17° /8° 0 mm 4
Oct. 30 Light rain
Light rain
 15° /9° 16.5 mm 4
Oct. 31 Cloudy
Cloudy
 22° /15° 0 mm 5
Next
Important Notice
Our weather forecast for Portland in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Portland forecast closer to your planned date for the most up-to-date weather information.
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Portland in October - FAQ

What are the expected maximum and minimum temperatures in Portland during October?
During October, expect a variety of temperatures with highs around 14° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in Portland during October?
Significant rainfall exceeding 119.5 mm is expected in Portland during October, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Portland during October?
The average wind speed in Portland during October is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

October rainfall patterns in Portland

Explore the daily rainfall trends and prepare for Portlands October weather 💧

UV exposure in Portland during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️

Quick links

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Location coordinates Where is Portland?

Get accurate weather forecasts for Portland, located at latitude 43.657 and longitude -70.259. Stay updated with localized weather information tailored for Portland.

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