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Wentzville, MO Weather Forecast for 5-Days

Updated: Mon Jan 19th 2026 2:00 AM CST

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Wentzville, MO Weather – 1-19 – Sunny
27° / 11°
Sunny
In Wentzville, it will be sunny with highs near 27°F and lows around 11°F. Wind will be moderate, blowing around 20mph on average and gusts of 23.3mph at 4 AM. Humidity levels should be comfortable, sitting around 41% on average, the maximum being 54% at 4 AM and 24% being its lowest at 4 PM. Barometric pressure is its highest of 30.48inHg at 11 AM, a lowest point of 30.2inHg at 3 AM with an avg 30.4inHg.
Wentzville, MO Weather – 1-20 – Partly Cloudy
35° / 17°

Weather Tomorrow

Partly Cloudy
It will be cloudy in Wentzville, with a high of 35°F and a low of 17°F. Wind will be moderate, blowing around 17mph on average and gusts of 29mph at 8 PM. Humidity levels should be comfortable, sitting around 36% on average, the maximum being 50% at 10 PM and 29% being its lowest at 10 AM. Barometric pressure is its highest of 30.45inHg at 12 AM, a lowest point of 30.2inHg at 11 PM with an avg 30.36inHg.
Wentzville, MO Weather – 1-21 – Overcast
42° / 29°
Overcast
Wentzville may see cloud-filled skies, with daytime highs of 42°F and overnight lows near 29°F. Wind will be moderate, blowing around 19mph on average and gusts of 28.7mph at 1 AM. The humidity will be on the higher side, averaging about 65%, the maximum being 90% at 10 AM and 40% being its lowest at 1 AM. Barometric pressure is its highest of 30.19inHg at 10 PM, a lowest point of 30.03inHg at 7 AM with an avg 30.09inHg.
Wentzville, MO Weather – 1-22 – Sunny
37° / 24°
Sunny
It will be sunny in Wentzville, with a high of 37°F and a low of 24°F. Wind will be moderate, blowing around 15mph on average and gusts of 18.4mph at 5 PM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 96% at 9 PM and 35% being its lowest at 1 PM. Barometric pressure is its highest of 30.43inHg at 10 AM, a lowest point of 30.21inHg at 11 PM with an avg 30.33inHg.
Wentzville, MO Weather – 1-23 – Scattered Showers
46° / 18°
Scattered Showers
Showers likely at times in Wentzville, with a high of 46°F and a low of 18°F. Rainfall predicted to have a 74% chance with an estimated 0.19in. Wind will be moderate, blowing around 17mph on average and gusts of 17.5mph at 8 AM. The humidity will be on the higher side, averaging about 77%, the maximum being 97% at 9 PM and 41% being its lowest at 2 AM. Barometric pressure is its highest of 30.64inHg at 11 AM, a lowest point of 29.92inHg at 10 PM with an avg 30.24inHg.
Wentzville, MO Weather – 1-24 – Scattered Showers
37° / 11°
Scattered Showers
On and off showers are set to occur in Wentzville, with a high of 37°F and a low of 11°F. The chance of rain is 84% with an estimated 0.05in. Snow is likely with a 18% chance with an estimated 0in. Wind will be moderate, blowing around 19mph on average and gusts of 21.1mph at 9 PM. High humidity with average of 86% is anticipated, the maximum being 99% at 3 AM and 61% being its lowest at 10 PM. Barometric pressure is its highest of 30.63inHg at 10 PM, a lowest point of 29.97inHg at 1 AM with an avg 30.25inHg.

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