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Weather in Portland, Maine for December 2025

Your guide to Portland weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 3 snowy days, Portland usually enjoys a light touch of snow in December.
    According to Portland snow forecast for December 2025, 3 snowy days are expected in the next 2 weeks. The closest date with snow is Monday, December 8.

    • Temperatures

  • Expect cooler weather in the next days in Portland with the forecast suggesting a temperature of -0.8 °F, lower than the historical average.

  • In general, the average temperature in Portland at the beginning of December is 2 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 4 °F by the end of December.

    • Rain 🌧️

  • Portland experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 282.1 mm.

    • More

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

Average dry days
21
Dry days
Average rainy days
7
Rainy days
Average snowy days
3
Snow days
Average temperatures
3°/-2°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Portland Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Cloudy
4°
2
Partly cloudy
2°
3
Partly cloudy
3°
4
Overcast
3°
5
Sunny
-3°
6
Overcast
3°
7
Patchy rain possible
2°
8
Moderate or heavy snow showers
0°
9
Light freezing rain
-1°
10
Patchy rain possible
7°
11
Partly cloudy
2°
12
Heavy snow
-1°
13
Partly cloudy
-2°
14
Overcast
-1°
15
Sunny
-4°
16
Partly cloudy
-4°
17
Partly cloudy
-7°
18
Sunny
-2°
19
Moderate rain
7°
20
Overcast
-1°
21
Overcast
-1°
22
Sunny
-5°
23
Partly cloudy
-4°
24
Overcast
0°
25
Overcast
0°
26
Cloudy
3°
27
Sunny
3°
28
Overcast
2°
29
Moderate rain at times
4°
30
Moderate or heavy rain shower
9°
31
Partly cloudy
7°

Temperatures trend during December in Portland

See the weather trend as well as the moving average line

December weather in Portland day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Cloudy
Cloudy
 4° /-1° 3.5 mm 0 cm
Dec. 2 Partly cloudy
Partly cloudy
 2° /-3° 38.9 mm 0 cm
Dec. 3 Partly cloudy
Partly cloudy
 3° /-1° 25.8 mm 12.3 cm
Dec. 4 Overcast
Overcast
 3° /-4° 0 mm 0 cm
Dec. 5 Sunny
Sunny
 -3° /-12° 0 mm 0 cm
Dec. 6 Overcast
Overcast
 3° /-8° 0 mm 0 cm
Dec. 7 Patchy rain possible
Patchy rain possible
 2° /0° 3.4 mm 0 cm
Dec. 8 Moderate or heavy snow showers
Moderate or heavy snow showers
 0° /-9° 17.3 mm 11.3 cm
Dec. 9 Light freezing rain
Light freezing rain
 -1° /-9° 0.1 mm 0 cm
Dec. 10 Patchy rain possible
Patchy rain possible
 7° /-1° 1.1 mm 0 cm
Dec. 11 Partly cloudy
Partly cloudy
 2° /-3° 0.1 mm 0 cm
Dec. 12 Heavy snow
Heavy snow
 -1° /-4° 3.3 mm 2.4 cm
Dec. 13 Partly cloudy
Partly cloudy
 -2° /-7° 0 mm 0 cm
Dec. 14 Overcast
Overcast
 -1° /-5° 0 mm 0 cm
Dec. 15 Sunny
Sunny
 -4° /-8° 0 mm 0 cm
Dec. 16 Partly cloudy
Partly cloudy
 -4° /-7° 0 mm 0 cm
Dec. 17 Partly cloudy
Partly cloudy
 -7° /-9° 0 mm 0 cm
Dec. 18 Sunny
Sunny
 -2° /-9° 0 mm 0 cm
Dec. 19 Moderate rain
Moderate rain
 7° /0° 37.3 mm 0 cm
Dec. 20 Overcast
Overcast
 -1° /-3° 0 mm 0 cm
Dec. 21 Overcast
Overcast
 -1° /-4° 0 mm 0 cm
Dec. 22 Sunny
Sunny
 -5° /-10° 0 mm 0 cm
Dec. 23 Partly cloudy
Partly cloudy
 -4° /-10° 0 mm 0 cm
Dec. 24 Overcast
Overcast
 0° /-4° 0 mm 0 cm
Dec. 25 Overcast
Overcast
 0° /-6° 0 mm 0 cm
Dec. 26 Cloudy
Cloudy
 3° /-4° 0 mm 0 cm
Dec. 27 Sunny
Sunny
 3° /-4° 0 mm 0 cm
Dec. 28 Overcast
Overcast
 2° /-2° 0 mm 0 cm
Dec. 29 Moderate rain at times
Moderate rain at times
 4° /0° 3.5 mm 0 cm
Dec. 30 Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /4° 37.6 mm 0 cm
Dec. 31 Partly cloudy
Partly cloudy
 7° /3° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Portland in December 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 December - FAQ

What are the expected maximum and minimum temperatures in Portland during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Portland during December?
Significant rainfall exceeding 282.1 mm is expected in Portland during December, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Portland in December 2025?
Portland experiences an average snowfall of 12.69 cm during December, occurring over 3 days.
What are the typical wind conditions in Portland during December?
The average wind speed in Portland during December is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

Portland snow forecast December 2025

Track daily snowfall levels and discover Portland’s snowy potential this December ❄️
On average, Portland sees 3 snowy days during December, with approximately 12.7 cm of total snowfall.

December rainfall patterns in Portland

Explore the daily rainfall trends and prepare for Portlands December weather 💧
Typically, Portland has 7 rainy days in December with a total of 282.1 mm of rainfall.

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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