Portsmouth Weather Forecast 15 Days, Weather in Portsmouth Today
Current weather conditions and 15 day weather forecast for Portsmouth, Rhode Island, 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
| 27 September 2026 Sunday 15.5 ° C / 59.8°F  Moderate or heavy rain shower |
Feels Like : 8.9 ° C / 48°F Humidity : % 96 Pressure : 1003 mb Wind Speed : 41.8 kmph / 25.9 miles from NE  Visibility : 7 km Precipitation (rainfall) : 2.67 mm Cloud (%) : 100 |
15 day weather forecast for Portsmouth, RI, 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, Rhode Island 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 27 September 2026 Sunday |  Light rain shower |
15.4 ° C (59.7°F) |
19.3 ° C (66.8°F) |
17.7 ° C (63.8°F) |
% 96 | 93% | 1.6 | Sunrise:06:37 AM Sunset: 06:34 PM |
Moonrise:06:45 PM Moonset: 07:38 AM Moon Phase ( Waning Gibbous ) |
|
| 28 September 2026 Monday | Light rain shower |
13.9 ° C (57°F) |
17.1 ° C (62.9°F) |
15.9 ° C (60.7°F) |
% 98 | 94% | 4.2 | Sunrise:06:38 AM Sunset: 06:32 PM |
Moonrise:07:09 PM Moonset: 08:44 AM Moon Phase ( Waning Gibbous ) |
|
| 29 September 2026 Tuesday |  Patchy rain nearby |
12.5 ° C (54.6°F) |
14.9 ° C (58.7°F) |
13.6 ° C (56.6°F) |
% 94 | 73% | 0.5 | Sunrise:06:39 AM Sunset: 06:30 PM |
Moonrise:07:38 PM Moonset: 09:54 AM Moon Phase ( Waning Gibbous ) |
|
| 30 September 2026 Wednesday | Patchy rain nearby |
13.6 ° C (56.5°F) |
19.2 ° C (66.6°F) |
15.8 ° C (60.4°F) |
% 87 | 44% | 4.8 | Sunrise:06:41 AM Sunset: 06:29 PM |
Moonrise:08:14 PM Moonset: 11:05 AM Moon Phase ( Waning Gibbous ) |
|
| 01 October 2026 Thursday |  Overcast |
16.5 ° C (61.6°F) |
22.6 ° C (72.6°F) |
19.3 ° C (66.7°F) |
% 82 | 22% | 6 | Sunrise:06:42 AM Sunset: 06:27 PM |
Moonrise:09:00 PM Moonset: 12:15 PM Moon Phase ( Last Quarter ) |
|
| 02 October 2026 Friday | Overcast |
14.3 ° C (57.7°F) |
21.6 ° C (70.8°F) |
18.4 ° C (65°F) |
% 67 | 12% | 5 | Sunrise:06:43 AM Sunset: 06:25 PM |
Moonrise:09:58 PM Moonset: 01:20 PM Moon Phase ( Last Quarter ) |
|
| 03 October 2026 Saturday | Overcast |
10.5 ° C (51°F) |
16.5 ° C (61.6°F) |
13.4 ° C (56.2°F) |
% 57 | 11% | 4 | Sunrise:06:44 AM Sunset: 06:24 PM |
Moonrise:11:06 PM Moonset: 02:17 PM Moon Phase ( Last Quarter ) |
|
| 04 October 2026 Sunday | Patchy rain nearby |
10.3 ° C (50.6°F) |
18.1 ° C (64.5°F) |
14.2 ° C (57.6°F) |
% 87 | 84% | 4 | Sunrise:06:45 AM Sunset: 06:22 PM |
Moonrise:Does not rise today Moonset: 03:04 PM Moon Phase ( Last Quarter ) |
|
| 05 October 2026 Monday | Light rain shower |
12.5 ° C (54.5°F) |
19.8 ° C (67.7°F) |
18 ° C (64.4°F) |
% 96 | 90% | 4 | Sunrise:06:46 AM Sunset: 06:20 PM |
Moonrise:12:21 AM Moonset: 03:42 PM Moon Phase ( Waning Crescent ) |
|
| 06 October 2026 Tuesday |  Sunny |
9 ° C (48.1°F) |
15.9 ° C (60.6°F) |
12.4 ° C (54.4°F) |
% 61 | 4% | 5 | Sunrise:06:47 AM Sunset: 06:19 PM |
Moonrise:01:39 AM Moonset: 04:13 PM Moon Phase ( Waning Crescent ) |
|
| 07 October 2026 Wednesday | Sunny |
10 ° C (49.9°F) |
17.4 ° C (63.2°F) |
13.2 ° C (55.7°F) |
% 68 | 6% | 5 | Sunrise:06:48 AM Sunset: 06:17 PM |
Moonrise:02:57 AM Moonset: 04:40 PM Moon Phase ( Waning Crescent ) |
|
| 08 October 2026 Thursday | Overcast |
8 ° C (46.5°F) |
17.2 ° C (63°F) |
14.7 ° C (58.4°F) |
% 70 | 19% | 4 | Sunrise:06:49 AM Sunset: 06:15 PM |
Moonrise:04:14 AM Moonset: 05:04 PM Moon Phase ( Waning Crescent ) |
|
| 09 October 2026 Friday | Sunny |
5.7 ° C (42.3°F) |
11.7 ° C (53.1°F) |
8.1 ° C (46.5°F) |
% 61 | 4% | 4 | Sunrise:06:50 AM Sunset: 06:14 PM |
Moonrise:05:30 AM Moonset: 05:28 PM Moon Phase ( New Moon ) |
|
| 10 October 2026 Saturday | Sunny |
3.2 ° C (37.8°F) |
10.8 ° C (51.5°F) |
6.7 ° C (44.1°F) |
% 60 | 5% | 4 | Sunrise:06:51 AM Sunset: 06:12 PM |
Moonrise:06:45 AM Moonset: 05:52 PM Moon Phase ( New Moon ) |
|
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