Portsmouth, OH Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Portsmouth, OH in one place.
Mostly sunny, with a high near 89. Southwest wind around 10 mph.
Local Weather Overview
This forecast page for Portsmouth, 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 15, 2026 3:13 PM EDT.
The active forecast window currently covers Apr 15 to Apr 21, 2026 for Portsmouth, OH.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 3:13 PM EDT
- Forecast office
- ILN
- Source
- NOAA / NWS
Daily Outlook
This Week in Portsmouth
This Afternoon looks like the warmest upcoming period in Portsmouth at 89 degrees F.
Sunday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Sunday at about 7 to 12 mph W.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 3:13 PM EDT
- Coverage
- 7 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 65. Southwest wind 6 to 9 mph.
A slight chance of rain showers between 1pm and 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then showers and thunderstorms likely. Partly sunny, with a high near 85. Southwest wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Southwest wind 3 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of rain showers before 8am. Mostly sunny, with a high near 85. West wind around 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers after 2am. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
A chance of rain showers before 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
A chance of rain showers. Partly sunny, with a high near 63. Chance of precipitation is 40%.
A slight chance of rain showers before 8pm. Mostly clear, with a low around 36.
Sunny, with a high near 64.
Mostly clear, with a low around 40.
Sunny, with a high near 77.
Mostly clear, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Apr 15
|
Mostly Sunny
|
89°F |
10 mph
SW
|
|
Tonight
Apr 15
|
Partly Cloudy
|
65°F |
6 to 9 mph
SW
|
|
Thursday
Apr 16
|
Partly Sunny then Chance Showers And Thunderstorms
|
85°F |
6 to 10 mph
SW
|
|
Thursday Night
Apr 16
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
61°F |
3 to 9 mph
SW
|
|
Friday
Apr 17
|
Slight Chance Rain Showers then Mostly Sunny
|
85°F |
6 mph
W
|
|
Friday Night
Apr 17
|
Partly Cloudy then Slight Chance Rain Showers
|
61°F |
5 mph
SW
|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
87°F |
3 to 10 mph
SW
|
|
Saturday Night
Apr 18
|
Showers And Thunderstorms Likely
|
46°F |
9 mph
W
|
|
Sunday
Apr 19
|
Chance Rain Showers
|
63°F |
7 to 12 mph
W
|
|
Sunday Night
Apr 19
|
Slight Chance Rain Showers then Mostly Clear
|
36°F |
5 to 10 mph
W
|
|
Monday
Apr 20
|
Sunny
|
64°F |
7 mph
W
|
|
Monday Night
Apr 20
|
Mostly Clear
|
40°F |
5 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
77°F |
2 to 8 mph
S
|
|
Tuesday Night
Apr 21
|
Mostly Clear
|
52°F |
7 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Portsmouth.
