Portsmouth Weather Forecast 15 Days, Weather in Portsmouth Today
Current weather conditions and 15 day weather forecast for Portsmouth, New Hampshire, 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 Portsmouth
| 26 December 2025 Friday -11.7 ° C / 10.9°F  Clear |
Feels Like : -18.7 ° C / -1.6°F Humidity : % 57 Pressure : 1022 mb Wind Speed : 14.4 kmph / 8.9 miles from NW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Portsmouth, NH, USA
Weather Forecast for next 15 Days for Portsmouth 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 Portsmouth, New Hampshire 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26 December 2025 Friday | Sunny |
-11.8 ° C (10.8°F) |
-3.7 ° C (25.3°F) |
-7.8 ° C (17.9°F) |
% 52 | 0% | 0.2 | Sunrise:07:14 AM Sunset: 04:14 PM |
Moonrise:10:58 AM Moonset: 11:10 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Moderate or heavy snow showers |
-7.7 ° C (18.1°F) |
-4.7 ° C (23.5°F) |
-6.3 ° C (20.6°F) |
% 75 | 79% | 0.2 | Sunrise:07:14 AM Sunset: 04:15 PM |
Moonrise:11:19 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday |  Partly Cloudy |
-12.6 ° C (9.3°F) |
0.7 ° C (33.3°F) |
-5.1 ° C (22.8°F) |
% 57 | 0% | 0.2 | Sunrise:07:15 AM Sunset: 04:16 PM |
Moonrise:11:40 AM Moonset: 12:22 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday |  Moderate rain |
-2.8 ° C (26.9°F) |
4.9 ° C (40.8°F) |
1.6 ° C (34.9°F) |
% 87 | 81% | 0 | Sunrise:07:15 AM Sunset: 04:16 PM |
Moonrise:12:05 PM Moonset: 01:38 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday |  Overcast |
-6.2 ° C (20.9°F) |
-2.4 ° C (27.7°F) |
-4.1 ° C (24.5°F) |
% 65 | 0% | 0 | Sunrise:07:15 AM Sunset: 04:17 PM |
Moonrise:12:35 PM Moonset: 02:57 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Partly Cloudy |
-7.3 ° C (18.9°F) |
-2.4 ° C (27.7°F) |
-4.8 ° C (23.4°F) |
% 66 | 0% | 2 | Sunrise:07:15 AM Sunset: 04:18 PM |
Moonrise:01:16 PM Moonset: 04:19 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday |  Light freezing rain |
-1.9 ° C (28.6°F) |
1.9 ° C (35.4°F) |
0.1 ° C (32.1°F) |
% 79 | 80% | 1 | Sunrise:07:15 AM Sunset: 04:19 PM |
Moonrise:02:08 PM Moonset: 05:39 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 January 2026 Friday | Sunny |
-10.8 ° C (12.5°F) |
-2 ° C (28.3°F) |
-5.1 ° C (22.9°F) |
% 64 | 0% | 2 | Sunrise:07:15 AM Sunset: 04:20 PM |
Moonrise:03:15 PM Moonset: 06:51 AM Moon Phase ( Waxing Gibbous ) |
|
| 03 January 2026 Saturday | Sunny |
-12.3 ° C (9.8°F) |
-6.7 ° C (19.9°F) |
-9.8 ° C (14.4°F) |
% 62 | 0% | 2 | Sunrise:07:15 AM Sunset: 04:21 PM |
Moonrise:04:32 PM Moonset: 07:49 AM Moon Phase ( Full Moon ) |
|
| 04 January 2026 Sunday | Light freezing rain |
-10.3 ° C (13.5°F) |
-3 ° C (26.6°F) |
-6 ° C (21.2°F) |
% 57 | 72% | 1 | Sunrise:07:15 AM Sunset: 04:22 PM |
Moonrise:05:53 PM Moonset: 08:32 AM Moon Phase ( Waning Gibbous ) |
|
| 05 January 2026 Monday |  Patchy rain nearby |
-1.2 ° C (29.8°F) |
5.7 ° C (42.3°F) |
1.7 ° C (35.1°F) |
% 85 | 80% | 1 | Sunrise:07:15 AM Sunset: 04:23 PM |
Moonrise:07:12 PM Moonset: 09:06 AM Moon Phase ( Waning Gibbous ) |
|
| 06 January 2026 Tuesday | Light freezing rain |
-3.3 ° C (26.1°F) |
-1.1 ° C (30.1°F) |
-1.9 ° C (28.6°F) |
% 77 | 0% | 1 | Sunrise:07:15 AM Sunset: 04:24 PM |
Moonrise:08:26 PM Moonset: 09:32 AM Moon Phase ( Waning Gibbous ) |
|
| 07 January 2026 Wednesday |  Heavy snow |
-6.8 ° C (19.7°F) |
-5.2 ° C (22.6°F) |
-5.5 ° C (22.1°F) |
% 89 | 83% | 1 | Sunrise:07:15 AM Sunset: 04:25 PM |
Moonrise:09:36 PM Moonset: 09:54 AM Moon Phase ( Waning Gibbous ) |
|
| 08 January 2026 Thursday |  Moderate snow |
-8.1 ° C (17.4°F) |
-5.2 ° C (22.7°F) |
-6.4 ° C (20.5°F) |
% 87 | 73% | 1 | Sunrise:07:15 AM Sunset: 04:26 PM |
Moonrise:10:42 PM Moonset: 10:13 AM Moon Phase ( Waning Gibbous ) |
|
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