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
| 06 February 2026 Friday 0.1 ° C / 32.2°F  Partly cloudy |
Feels Like : -0.7 ° C / 30.7°F Humidity : % 51 Pressure : 1004 mb Wind Speed : 3.6 kmph / 2.2 miles from W  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 06 February 2026 Friday |  Sunny |
-5.4 ° C (22.3°F) |
-1.1 ° C (30°F) |
-3.1 ° C (26.4°F) |
% 77 | 0% | 0.3 | Sunrise:06:57 AM Sunset: 05:16 PM |
Moonrise:10:42 PM Moonset: 09:05 AM Moon Phase ( Waning Gibbous ) |
|
| 07 February 2026 Saturday |  Overcast |
-13.1 ° C (8.5°F) |
-2.4 ° C (27.7°F) |
-6.5 ° C (20.2°F) |
% 82 | 0% | 0.2 | Sunrise:06:56 AM Sunset: 05:17 PM |
Moonrise:11:46 PM Moonset: 09:26 AM Moon Phase ( Waning Gibbous ) |
|
| 08 February 2026 Sunday | Sunny |
-15.9 ° C (3.4°F) |
-6.1 ° C (21°F) |
-11.8 ° C (10.8°F) |
% 68 | 0% | 0.4 | Sunrise:06:55 AM Sunset: 05:18 PM |
Moonrise:No moonrise Moonset: 09:50 AM Moon Phase ( Waning Gibbous ) |
|
| 09 February 2026 Monday | Sunny |
-13.8 ° C (7.2°F) |
-3.4 ° C (25.9°F) |
-9.1 ° C (15.6°F) |
% 73 | 0% | 0.4 | Sunrise:06:54 AM Sunset: 05:20 PM |
Moonrise:12:50 AM Moonset: 10:18 AM Moon Phase ( Last Quarter ) |
|
| 10 February 2026 Tuesday | Partly Cloudy |
-7.7 ° C (18.1°F) |
-0.8 ° C (30.5°F) |
-4.6 ° C (23.7°F) |
% 81 | 0% | 0 | Sunrise:06:53 AM Sunset: 05:21 PM |
Moonrise:01:53 AM Moonset: 10:52 AM Moon Phase ( Waning Crescent ) |
|
| 11 February 2026 Wednesday |  Moderate or heavy snow showers |
-4.2 ° C (24.4°F) |
0.2 ° C (32.4°F) |
-1.9 ° C (28.6°F) |
% 92 | 71% | 1 | Sunrise:06:51 AM Sunset: 05:22 PM |
Moonrise:02:54 AM Moonset: 11:34 AM Moon Phase ( Waning Crescent ) |
|
| 12 February 2026 Thursday |  Cloudy |
-6.5 ° C (20.4°F) |
1.4 ° C (34.5°F) |
-3.3 ° C (26.1°F) |
% 80 | 0% | 1 | Sunrise:06:50 AM Sunset: 05:23 PM |
Moonrise:03:51 AM Moonset: 12:23 PM Moon Phase ( Waning Crescent ) |
|
| 13 February 2026 Friday | Overcast |
-9.1 ° C (15.7°F) |
-5 ° C (23.1°F) |
-6.9 ° C (19.6°F) |
% 74 | 0% | 1 | Sunrise:06:49 AM Sunset: 05:25 PM |
Moonrise:04:40 AM Moonset: 01:21 PM Moon Phase ( Waning Crescent ) |
|
| 14 February 2026 Saturday | Cloudy |
-4.1 ° C (24.6°F) |
0.7 ° C (33.3°F) |
-1.7 ° C (28.9°F) |
% 76 | 0% | 1 | Sunrise:06:48 AM Sunset: 05:26 PM |
Moonrise:05:23 AM Moonset: 02:25 PM Moon Phase ( Waning Crescent ) |
|
| 15 February 2026 Sunday |  Light freezing rain |
-2.4 ° C (27.8°F) |
0.9 ° C (33.6°F) |
-1 ° C (30.2°F) |
% 81 | 0% | 1 | Sunrise:06:46 AM Sunset: 05:27 PM |
Moonrise:05:58 AM Moonset: 03:33 PM Moon Phase ( Waning Crescent ) |
|
| 16 February 2026 Monday | Sunny |
-3.7 ° C (25.3°F) |
0.8 ° C (33.5°F) |
-1.5 ° C (29.2°F) |
% 82 | 0% | 2 | Sunrise:06:45 AM Sunset: 05:28 PM |
Moonrise:06:28 AM Moonset: 04:42 PM Moon Phase ( Waning Crescent ) |
|
| 17 February 2026 Tuesday | Partly Cloudy |
-3.2 ° C (26.2°F) |
0.6 ° C (33°F) |
-1.2 ° C (29.9°F) |
% 88 | 0% | 2 | Sunrise:06:44 AM Sunset: 05:30 PM |
Moonrise:06:53 AM Moonset: 05:51 PM Moon Phase ( New Moon ) |
|
| 18 February 2026 Wednesday |  Patchy rain nearby |
1 ° C (33.8°F) |
4 ° C (39.3°F) |
2.5 ° C (36.5°F) |
% 94 | 73% | 1 | Sunrise:06:42 AM Sunset: 05:31 PM |
Moonrise:07:17 AM Moonset: 07:01 PM Moon Phase ( Waxing Crescent ) |
|
| 19 February 2026 Thursday | Partly Cloudy |
-2.4 ° C (27.8°F) |
2.4 ° C (36.4°F) |
1.3 ° C (34.3°F) |
% 75 | 0% | 2 | Sunrise:06:41 AM Sunset: 05:32 PM |
Moonrise:07:39 AM Moonset: 08:11 PM Moon Phase ( Waxing Crescent ) |
|
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