Port Jefferson Weather Forecast 15 Days, Weather in Port Jefferson Today
Current weather conditions and 15 day weather forecast for Port Jefferson, New York, 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 Port Jefferson
| 07 November 2026 Saturday 15.5 ° C / 59.8°F  Light drizzle |
Feels Like : 15 ° C / 59°F Humidity : % 95 Pressure : 1008 mb Wind Speed : 10.1 kmph / 6.3 miles from WSW  Visibility : 2 km Precipitation (rainfall) : 0.45 mm Cloud (%) : 100 |
15 day weather forecast for Port Jefferson, NY, USA
Weather Forecast for next 15 Days for Port Jefferson 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 Port Jefferson, New York 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 07 November 2026 Saturday |  Sunny |
10.1 ° C (50.2°F) |
16.3 ° C (61.4°F) |
14.2 ° C (57.6°F) |
% 78 | 59% | 2.5 | Sunrise:06:30 AM Sunset: 04:41 PM |
Moonrise:04:45 AM Moonset: 03:28 PM Moon Phase ( New Moon ) |
|
| 08 November 2026 Sunday | Sunny |
9.5 ° C (49.2°F) |
14.9 ° C (58.8°F) |
12.7 ° C (54.9°F) |
% 66 | 19% | 2.2 | Sunrise:06:31 AM Sunset: 04:40 PM |
Moonrise:05:58 AM Moonset: 03:57 PM Moon Phase ( New Moon ) |
|
| 09 November 2026 Monday | Sunny |
10 ° C (49.9°F) |
13.8 ° C (56.8°F) |
11.9 ° C (53.5°F) |
% 58 | 5% | 4 | Sunrise:06:32 AM Sunset: 04:39 PM |
Moonrise:07:11 AM Moonset: 04:33 PM Moon Phase ( New Moon ) |
|
| 10 November 2026 Tuesday | Sunny |
9.9 ° C (49.7°F) |
16.2 ° C (61.1°F) |
12.7 ° C (54.8°F) |
% 63 | 7% | 5 | Sunrise:06:33 AM Sunset: 04:38 PM |
Moonrise:08:21 AM Moonset: 05:16 PM Moon Phase ( New Moon ) |
|
| 11 November 2026 Wednesday |  Overcast |
10.5 ° C (50.9°F) |
13.7 ° C (56.7°F) |
12.5 ° C (54.5°F) |
% 66 | 11% | 4 | Sunrise:06:34 AM Sunset: 04:37 PM |
Moonrise:09:24 AM Moonset: 06:06 PM Moon Phase ( Waxing Crescent ) |
|
| 12 November 2026 Thursday | Light drizzle |
10.2 ° C (50.4°F) |
11.7 ° C (53°F) |
11.1 ° C (52°F) |
% 85 | 89% | 3 | Sunrise:06:36 AM Sunset: 04:36 PM |
Moonrise:10:19 AM Moonset: 07:03 PM Moon Phase ( Waxing Crescent ) |
|
| 13 November 2026 Friday |  Light rain |
9.8 ° C (49.6°F) |
11.7 ° C (53.1°F) |
11 ° C (51.8°F) |
% 88 | 90% | 3 | Sunrise:06:37 AM Sunset: 04:35 PM |
Moonrise:11:04 AM Moonset: 08:05 PM Moon Phase ( Waxing Crescent ) |
|
| 14 November 2026 Saturday |  Patchy rain nearby |
5.8 ° C (42.4°F) |
9.6 ° C (49.3°F) |
7.9 ° C (46.2°F) |
% 82 | 83% | 2 | Sunrise:06:38 AM Sunset: 04:34 PM |
Moonrise:11:41 AM Moonset: 09:08 PM Moon Phase ( First Quarter ) |
|
| 15 November 2026 Sunday | Patchy rain nearby |
5.7 ° C (42.2°F) |
8.2 ° C (46.8°F) |
6.5 ° C (43.7°F) |
% 75 | 34% | 2 | Sunrise:06:39 AM Sunset: 04:33 PM |
Moonrise:12:11 PM Moonset: 10:11 PM Moon Phase ( First Quarter ) |
|
| 16 November 2026 Monday | Sunny |
4.8 ° C (40.6°F) |
8.9 ° C (47.9°F) |
6.7 ° C (44°F) |
% 63 | 5% | 3 | Sunrise:06:40 AM Sunset: 04:33 PM |
Moonrise:12:36 PM Moonset: 11:13 PM Moon Phase ( First Quarter ) |
|
| 17 November 2026 Tuesday | Sunny |
4.2 ° C (39.5°F) |
8.9 ° C (48°F) |
6.8 ° C (44.2°F) |
% 62 | 4% | 3 | Sunrise:06:42 AM Sunset: 04:32 PM |
Moonrise:12:58 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 18 November 2026 Wednesday | Sunny |
6.3 ° C (43.3°F) |
10.9 ° C (51.7°F) |
8.5 ° C (47.3°F) |
% 64 | 5% | 4 | Sunrise:06:43 AM Sunset: 04:31 PM |
Moonrise:01:18 PM Moonset: 12:13 AM Moon Phase ( Waxing Gibbous ) |
|
| 19 November 2026 Thursday |  Partly Cloudy |
7.7 ° C (45.9°F) |
11 ° C (51.8°F) |
9 ° C (48.2°F) |
% 75 | 48% | 3 | Sunrise:06:44 AM Sunset: 04:30 PM |
Moonrise:01:38 PM Moonset: 01:14 AM Moon Phase ( Waxing Gibbous ) |
|
| 20 November 2026 Friday | Partly Cloudy |
6.7 ° C (44.1°F) |
9.6 ° C (49.2°F) |
8.1 ° C (46.6°F) |
% 72 | 12% | 3 | Sunrise:06:45 AM Sunset: 04:30 PM |
Moonrise:01:58 PM Moonset: 02:16 AM Moon Phase ( Waxing Gibbous ) |
|
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