Port Jefferson, OH Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Port Jefferson, OH in one place.
Mostly sunny, with a high near 73. West wind 2 to 9 mph.
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: Aug 23, 2026 5:29 AM EDT.
The active forecast window currently covers Aug 24 to Aug 29, 2026 for Port Jefferson, OH.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 5:29 AM 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 81 degrees F.
Monday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Monday at about 2 to 9 mph W.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 5:29 AM EDT
- Coverage
- 6 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
Partly cloudy, with a low around 53. West wind 0 to 7 mph.
Sunny, with a high near 75.
Partly cloudy, with a low around 56.
Mostly sunny, with a high near 79.
A slight chance of showers and thunderstorms after 8pm. Partly cloudy, with a low around 62.
A slight chance of rain showers before 8am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 40%.
Sunny, with a high near 79.
Partly cloudy, with a low around 59.
Mostly sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Mostly Sunny
|
73°F |
2 to 9 mph
W
|
|
Monday Night
Aug 24
|
Partly Cloudy
|
53°F |
0 to 7 mph
W
|
|
Tuesday
Aug 25
|
Sunny
|
75°F |
2 mph
NW
|
|
Tuesday Night
Aug 25
|
Partly Cloudy
|
56°F |
2 mph
E
|
|
Wednesday
Aug 26
|
Mostly Sunny
|
79°F |
2 to 6 mph
S
|
|
Wednesday Night
Aug 26
|
Slight Chance Showers And Thunderstorms
|
62°F |
5 mph
S
|
|
Thursday
Aug 27
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
81°F |
3 to 8 mph
SW
|
|
Thursday Night
Aug 27
|
Chance Showers And Thunderstorms then Partly Cloudy
|
61°F |
2 to 7 mph
W
|
|
Friday
Aug 28
|
Sunny
|
79°F |
2 to 6 mph
NW
|
|
Friday Night
Aug 28
|
Partly Cloudy
|
59°F |
3 mph
N
|
|
Saturday
Aug 29
|
Mostly Sunny
|
78°F |
1 to 5 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Port Jefferson.