Southwest Harbor (CDP) Weather Forecast 15 Days, Weather in Southwest Harbor (CDP) Today
Current weather conditions and 15 day weather forecast for Southwest Harbor (CDP), Maine, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Southwest Harbor (CDP)
| 15 December 2025 Monday -6.7 ° C / 19.9°F  Overcast |
Feels Like : -15.3 ° C / 4.4°F Humidity : % 52 Pressure : 1011 mb Wind Speed : 31 kmph / 19.2 miles from WNW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Southwest Harbor (CDP), ME, USA
Weather Forecast for next 15 Days for Southwest Harbor (CDP) including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Southwest Harbor (CDP), Maine state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 December 2025 Monday |  Partly Cloudy |
-9.5 ° C (14.9°F) |
-6.7 ° C (19.9°F) |
-7.6 ° C (18.4°F) |
% 59 | 0% | 0.2 | Sunrise:07:02 AM Sunset: 03:53 PM |
Moonrise:02:54 AM Moonset: 12:53 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Partly Cloudy |
-7 ° C (19.4°F) |
-1.4 ° C (29.5°F) |
-4 ° C (24.9°F) |
% 68 | 0% | 0.2 | Sunrise:07:03 AM Sunset: 03:54 PM |
Moonrise:04:00 AM Moonset: 01:17 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Overcast |
0.7 ° C (33.3°F) |
5.6 ° C (42.1°F) |
3.4 ° C (38.1°F) |
% 75 | 0% | 0.2 | Sunrise:07:03 AM Sunset: 03:54 PM |
Moonrise:05:05 AM Moonset: 01:46 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Sunny |
-3.4 ° C (25.8°F) |
-0.2 ° C (31.7°F) |
-0.3 ° C (31.5°F) |
% 62 | 0% | 0.2 | Sunrise:07:04 AM Sunset: 03:54 PM |
Moonrise:06:09 AM Moonset: 02:23 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Moderate rain |
-0.9 ° C (30.4°F) |
10.8 ° C (51.4°F) |
7 ° C (44.6°F) |
% 87 | 81% | 0 | Sunrise:07:05 AM Sunset: 03:55 PM |
Moonrise:07:09 AM Moonset: 03:10 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Partly Cloudy |
-7.1 ° C (19.2°F) |
-4.1 ° C (24.6°F) |
-4.5 ° C (24°F) |
% 52 | 0% | 2 | Sunrise:07:05 AM Sunset: 03:55 PM |
Moonrise:08:00 AM Moonset: 04:05 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Moderate rain |
0.2 ° C (32.4°F) |
5.4 ° C (41.7°F) |
2.2 ° C (36°F) |
% 92 | 89% | 1 | Sunrise:07:06 AM Sunset: 03:56 PM |
Moonrise:08:43 AM Moonset: 05:09 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Sunny |
-6.7 ° C (20°F) |
-4.9 ° C (23.1°F) |
-4.8 ° C (23.4°F) |
% 64 | 0% | 2 | Sunrise:07:06 AM Sunset: 03:56 PM |
Moonrise:09:18 AM Moonset: 06:17 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Patchy moderate snow |
-5.8 ° C (21.5°F) |
3.2 ° C (37.8°F) |
-0.6 ° C (30.9°F) |
% 63 | 88% | 1 | Sunrise:07:07 AM Sunset: 03:57 PM |
Moonrise:09:46 AM Moonset: 07:27 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Patchy rain nearby |
2.3 ° C (36.1°F) |
3.7 ° C (38.6°F) |
3.4 ° C (38.1°F) |
% 85 | 63% | 1 | Sunrise:07:07 AM Sunset: 03:57 PM |
Moonrise:10:09 AM Moonset: 08:37 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Partly Cloudy |
-11.4 ° C (11.4°F) |
-8 ° C (17.6°F) |
-8 ° C (17.6°F) |
% 60 | 0% | 2 | Sunrise:07:07 AM Sunset: 03:58 PM |
Moonrise:10:29 AM Moonset: 09:48 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Moderate or heavy snow showers |
-10.2 ° C (13.7°F) |
-5.4 ° C (22.3°F) |
-7.3 ° C (18.9°F) |
% 72 | 82% | 1 | Sunrise:07:08 AM Sunset: 03:59 PM |
Moonrise:10:48 AM Moonset: 10:59 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Blizzard |
-11.9 ° C (10.5°F) |
-5.5 ° C (22.2°F) |
-7 ° C (19.5°F) |
% 85 | 89% | 1 | Sunrise:07:08 AM Sunset: 03:59 PM |
Moonrise:11:07 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Sunny |
-14 ° C (6.8°F) |
-4.9 ° C (23.1°F) |
-10.1 ° C (13.9°F) |
% 73 | 0% | 2 | Sunrise:07:08 AM Sunset: 04:00 PM |
Moonrise:11:27 AM Moonset: 12:12 AM Moon Phase ( Waxing Gibbous ) |
|
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