Port Jefferson, OH Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Port Jefferson, OH in one place.
A chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Port Jefferson, OH is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 18, 2026 6:07 PM EDT.
The active forecast window currently covers Apr 22 to Apr 24, 2026 for Port Jefferson, OH.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 24, 2026
- Latest sync
- Apr 18, 2026 6:07 PM EDT
- Forecast office
- ILN
- Source
- NOAA / NWS
Daily Outlook
This Week in Port Jefferson
Thursday looks like the warmest upcoming period in Port Jefferson at 80 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Friday at about 8 to 16 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 18, 2026 6:07 PM EDT
- Coverage
- 3 days
- Time zone
- America/New_York
- Forecast office
- ILN
- Radar station
- KILN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 51.
Sunny, with a high near 80.
Partly cloudy, with a low around 60.
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 54.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Chance Showers And Thunderstorms then Mostly Sunny
|
74°F |
8 mph
W
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
51°F |
7 mph
E
|
|
Thursday
Apr 23
|
Sunny
|
80°F |
5 to 10 mph
S
|
|
Thursday Night
Apr 23
|
Partly Cloudy
|
60°F |
8 mph
SW
|
|
Friday
Apr 24
|
Chance Showers And Thunderstorms
|
78°F |
8 to 16 mph
SW
|
|
Friday Night
Apr 24
|
Showers And Thunderstorms Likely
|
54°F |
8 to 14 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Port Jefferson.