45684 Weather (Portsmouth, OH)

Weather forecast for: Portsmouth OH

Last Update: 4:00 am EDT Sep 8, 2026

Today: Mostly sunny, with a high near 89. Light and variable wind.

Tonight: Mostly clear, with a low around 67. Calm wind.

Wednesday: Sunny, with a high near 91. Light south wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

Wednesday Night: Showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 70. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: Showers and possibly a thunderstorm. High near 83. Southwest wind 3 to 8 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Thursday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: Mostly sunny, with a high near 83.

Friday Night: Partly cloudy, with a low around 62.

Saturday: A chance of showers before 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

Saturday Night: Partly cloudy, with a low around 66.

Sunday: Mostly sunny, with a high near 88.

Sunday Night: Partly cloudy, with a low around 64.

Monday: Mostly sunny, with a high near 87.