Portage Des Sioux, MO Weather Tomorrow

From tomorrow through the next 5 days, stay updated on Portage Des Sioux weather with daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details for the Portage Des Sioux area and around St. Charles county, Missouri.
Updated: Sun Oct 4th 2026 8:15 PM CDT
Portage Des Sioux, MO Weather – 10-4 – Sunny
81° / 52°
Sunny
Daytime highs will reach 81°F with lows dropping to 52°F in Portage Des Sioux, where it will be sunny. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 12mph on average and gusts of 24.4mph at 9 PM. Humidity levels should be comfortable, sitting around 46% on average, the maximum being 69% at 11 PM and 58% being its lowest at 9 PM. Barometric pressure is its highest of 30.24inHg at 10 PM, a lowest point of 30.22inHg at 9 PM with an avg 30.23inHg.
Portage Des Sioux, MO Weather – 10-5 – Sunny
75° / 48°

Weather Tomorrow

Sunny
In Portage Des Sioux, bright and sunny conditions with highs near 75°F and lows around 48°F. There's a very small chance of rainfall, only about 2%. Winds will be light at 8mph and gusts of 18.8mph at 12 AM. Humidity levels should be comfortable, sitting around 55% on average, the maximum being 85% at 4 AM and 27% being its lowest at 3 PM. Barometric pressure is its highest of 30.29inHg at 8 AM, a lowest point of 30.13inHg at 5 PM with an avg 30.22inHg.
Portage Des Sioux, MO Weather – 10-6 – Sunny
81° / 51°
Sunny
Portage Des Sioux could see sunshine with daytime highs of 81°F and nighttime lows near 51°F. There's a very small chance of rainfall, only about 1%. Winds will be light at 10mph and gusts of 13mph at 9 AM. Humidity levels should be comfortable, sitting around 41% on average, the maximum being 60% at 7 AM and 22% being its lowest at 2 PM. Barometric pressure is its highest of 30.14inHg at 12 AM, a lowest point of 29.91inHg at 6 PM with an avg 30.03inHg.
Portage Des Sioux, MO Weather – 10-7 – Sunny
88° / 56°
Sunny
Highs will reach 88°F with lows near 56°F in Portage Des Sioux, where a sunny day is. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 11mph on average and gusts of 23.1mph at 2 AM. Humidity levels should be comfortable, sitting around 47% on average, the maximum being 74% at 11 PM and 28% being its lowest at 3 PM. Barometric pressure is its highest of 29.95inHg at 11 PM, a lowest point of 29.86inHg at 6 PM with an avg 29.92inHg.
Portage Des Sioux, MO Weather – 10-8 – Sunny
79° / 56°
Sunny
In Portage Des Sioux, sunshine is likely with a high near 79°F and a low around 56°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 11mph on average and gusts of 23.5mph at 5 AM. Humidity levels should be comfortable, sitting around 46% on average, the maximum being 90% at 2 AM and 18% being its lowest at 1 PM. Barometric pressure is its highest of 30.16inHg at 11 PM, a lowest point of 29.96inHg at 12 AM with an avg 30.09inHg.
Portage Des Sioux, MO Weather – 10-9 – Sunny
82° / 54°
Sunny
It will be sunny in Portage Des Sioux, with a high of 82°F and a low of 54°F. Rainfall predicted to have a 57% chance with an estimated 0.05in. Wind will be moderate, blowing around 11mph on average and gusts of 22.1mph at 2 AM. Humidity levels should be comfortable, sitting around 39% on average, the maximum being 66% at 7 AM and 18% being its lowest at 1 PM. Barometric pressure is its highest of 30.18inHg at 8 AM, a lowest point of 30.02inHg at 4 PM with an avg 30.11inHg.

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