Weather forecast for tomorrowPortsmouth, IA
Weather forecast for tomorrow
Monday Oct 19, 2026
- 68°F
- 43°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 10mphS 170°
- Humidity: 64%
- UV index: 4
- Sunrise: 7:39 am CDT
- Sunset: 6:34 pm CDT
- details ▼
Tomorrow, in Portsmouth, moments of sunshine will break through the patchy clouds.
The temperature is anticipated to vary between a maximum of an agreeable 68°F and a minimum of a chilly 42.8°F.
Forecasts show a high closer to September's climate pattern, around 75°F, rather than October's 59.7°F.
Sunrise will be at 7:39 am and sunset at 6:34 pm; tomorrow's daylight will last for 10h and 56min.
The temperature is anticipated to vary between a maximum of an agreeable 68°F and a minimum of a chilly 42.8°F.
Forecasts show a high closer to September's climate pattern, around 75°F, rather than October's 59.7°F.
Sunrise will be at 7:39 am and sunset at 6:34 pm; tomorrow's daylight will last for 10h and 56min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 66°C.
Coldest hour: 6 am 43°C.
Coldest hour: 6 am 43°C.
Chance of precipitation
Highest chance: 6 am 7%.
Hourly weather forecast
- 12 am
- 50°F
- Feels like:46°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 8mphS 180°
- Humidity: 73%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 46°F
- Feels like:43°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphS 179°
- Humidity: 81%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 45°F
- Feels like:41°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphS 173°
- Humidity: 89%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 43°F
- Feels like:39°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 6mphSSE 165°
- Humidity: 93%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:39 am
- 8 am
- 43°F
- Feels like:41°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 5mphSSE 159°
- Humidity: 95%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 8mphS 170°
- Humidity: 78%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 61°F
- Feels like:59°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 9mphS 177°
- Humidity: 57%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 64°F
- Feels like:64°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 174°
- Humidity: 49%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 66°F
- Feels like:66°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 10mphS 175°
- Humidity: 44%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 6 pm
- 63°F
- Feels like:63°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 7mphSSE 159°
- Humidity: 47%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:34 pm
- 8 pm
- 55°F
- Feels like:55°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphSE 144°
- Humidity: 63%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 52°F
- Feels like:50°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 5mphSSE 150°
- Humidity: 72%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, a combination of dull and dry and sunny weather is forecasted.
The temperature will vary between the lowest temperature of 42.8°F and the highest temperature of 66.2°F. The warmest part of the day will be from 3 pm to 5 pm.
The forecasted maximum is more consistent with September's typical high of 75°F than the average for October. The expected low will be alike with the average minimum in October, which is 44.1°F.
The temperature will vary between the lowest temperature of 42.8°F and the highest temperature of 66.2°F. The warmest part of the day will be from 3 pm to 5 pm.
The forecasted maximum is more consistent with September's typical high of 75°F than the average for October. The expected low will be alike with the average minimum in October, which is 44.1°F.
Updated: Oct 18, 2026 @ 14:58:31 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, moments of sunshine will break through the patchy clouds.
Tomorrow, the maximum temperature will be 68°F, while the minimum temperature will be 42.8°F.
The maximum temperature will be moderately higher than the average highest temperature of 59.7°F in October. The lowest temperature will be in line with the average low of 44.1°F.
The maximum temperature will be moderately higher than the average highest temperature of 59.7°F in October. The lowest temperature will be in line with the average low of 44.1°F.
On Monday, in Portsmouth, sunrise will be at 7:39 am and sunset at 6:34 pm (CDT).
Tomorrow, the daylight will last for 10h and 56min.
