Weather forecast for 10 daysPort Arthur, WI
Weather forecast for the weekend
Sunday Oct 18, 2026
- 64°F
- 36°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 14mphSSW 204°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:25 am CDT
- Sunset: 6:14 pm CDT
- details ▼
On Sunday, in Port Arthur, sunshine is forecasted under mostly clear skies.
Temperature changes will be considerable, from a high of a comfortable 64.4°F to a low of an icy 35.6°F.
Meteorological data shows 64.4°F is more characteristic of September's climate profile than October's.
Sunrise will be at 7:25 am and sunset at 6:14 pm; the daylight will last for 10h and 49min.
Temperature changes will be considerable, from a high of a comfortable 64.4°F to a low of an icy 35.6°F.
Meteorological data shows 64.4°F is more characteristic of September's climate profile than October's.
Sunrise will be at 7:25 am and sunset at 6:14 pm; the daylight will last for 10h and 49min.
10-day overview
Daily temperatures
Warmest period: Thursday - Friday 72°C.
Coldest day: Monday 26.10. 59°C.
Coldest day: Monday 26.10. 59°C.
Chance of precipitation
Highest chance: Sunday 25.10. 24%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 64°F
- 36°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 14mphSSW 204°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:25 am CDT
- Sunset: 6:14 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 66°F
- 37°F
Mostly Sunny
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 3mphSE 124°
- Humidity: 65%
- UV index: 3
- Sunrise: 7:26 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 66°F
- 41°F
Sunny
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 7mphSSE 158°
- Humidity: 65%
- UV index: 3
- Sunrise: 7:27 am CDT
- Sunset: 6:10 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 41°F
Mostly Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 6mphSSW 198°
- Humidity: 66%
- UV index: 3
- Sunrise: 7:29 am CDT
- Sunset: 6:09 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 72°F
- 46°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 4mphSE 132°
- Humidity: 67%
- UV index: 3
- Sunrise: 7:30 am CDT
- Sunset: 6:07 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 72°F
- 54°F
Mostly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 11mphSSE 153°
- Humidity: 61%
- UV index: 2
- Sunrise: 7:31 am CDT
- Sunset: 6:05 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 68°F
- 52°F
Cloudy
- Precip. probability: 12%
- Precipitation: 0.04"
- Wind: 14mphS 174°
- Humidity: 54%
- UV index: 2
- Sunrise: 7:33 am CDT
- Sunset: 6:04 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 63°F
- 41°F
Mostly Sunny
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 7mphW 262°
- Humidity: 62%
- UV index: 3
- Sunrise: 7:34 am CDT
- Sunset: 6:02 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 59°F
- 43°F
Partly Cloudy
- Precip. probability: 19%
- Precipitation: 0"
- Wind: 6mphESE 110°
- Humidity: 63%
- UV index: 2
- Sunrise: 7:36 am CDT
- Sunset: 6:01 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 61°F
- 48°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0.04"
- Wind: 9mphSE 137°
- Humidity: 67%
- UV index: 2
- Sunrise: 7:37 am CDT
- Sunset: 5:59 pm CDT
- details ▼
Weather models show that a combination of sun-filled and dull weather is expected.
With minimal precipitation of 0.04", rain is predicted for Saturday and next Tuesday.
Noticeable swings in temperature are expected across the forecast period. The temperature is expected to swing from 59°F up to 71.6°F, while there will be also a marked difference in overnight low temperatures, as the lowest temperatures will be recorded between 35.6°F and 53.6°F.
With a maximum temperature of 71.6°F, Thursday and Friday will be the warmest days in Port Arthur; the lowest daytime temperature of the period will be reached on next Monday, peaking at 59°F.
With minimal precipitation of 0.04", rain is predicted for Saturday and next Tuesday.
Noticeable swings in temperature are expected across the forecast period. The temperature is expected to swing from 59°F up to 71.6°F, while there will be also a marked difference in overnight low temperatures, as the lowest temperatures will be recorded between 35.6°F and 53.6°F.
With a maximum temperature of 71.6°F, Thursday and Friday will be the warmest days in Port Arthur; the lowest daytime temperature of the period will be reached on next Monday, peaking at 59°F.
Updated: Oct 18, 2026 @ 08:36:21 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
On Sunday, clear and sunny conditions are expected.
Today, the highest temperature will be 64.4°F, while the lowest temperature will be 35.6°F.
The maximum temperature will be notably higher than the average highest temperature of 52.7°F in October. The lowest temperature will be in line with the average low of 38.3°F.
The maximum temperature will be notably higher than the average highest temperature of 52.7°F in October. The lowest temperature will be in line with the average low of 38.3°F.
On Sunday, in Port Arthur, sunrise will be at 7:25 am and sunset at 6:14 pm (CDT).
In Port Arthur, the length of the day today will be 10h and 49min.
