Mount Vernon, SD Weather Tomorrow

Find tomorrow's weather forecast for Mount Vernon with an accurate 5 day outlook showing precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the Mount Vernon area and around Davison county, South Dakota.
Updated: Thu Sep 24th 2026 4:15 AM CDT
Mount Vernon, SD Weather – 9-24 – Scattered Showers
61° / 56°
Scattered Showers
In Mount Vernon, on and off showers are set to occur with highs near 61°F and lows around 56°F. The chance of rain is 92% with an estimated 0.4in. Wind will be moderate, blowing around 15mph on average and gusts of 32.5mph at 5 AM. High humidity with average of 91% is anticipated, the maximum being 95% at 5 AM and 86% being its lowest at 4 PM. Barometric pressure is its highest of 30.14inHg at 10 PM, a lowest point of 30.09inHg at 4 PM with an avg 30.12inHg.
Mount Vernon, SD Weather – 9-25 – Scattered Showers
61° / 56°

Weather Tomorrow

Scattered Showers
Mount Vernon could see scattered showers with daytime highs of 61°F and nighttime lows near 56°F. The chance of rain is 91% with an estimated 0.28in. Wind will be moderate, blowing around 15mph on average and gusts of 24mph at 8 PM. High humidity with average of 95% is anticipated, the maximum being 97% at 6 AM and 85% being its lowest at 1 PM. Barometric pressure is its highest of 30.14inHg at 8 AM, a lowest point of 30.02inHg at 11 PM with an avg 30.09inHg.
Mount Vernon, SD Weather – 9-26 – Overcast
66° / 56°
Overcast
Daytime highs will reach 66°F with lows dropping to 56°F in Mount Vernon, where skies will be overcast. Rainfall predicted to have a 67% chance with an estimated 0.04in. Wind will be moderate, blowing around 14mph on average and gusts of 24.2mph at 8 PM. High humidity with average of 92% is anticipated, the maximum being 98% at 11 PM and 77% being its lowest at 4 PM. Barometric pressure is its highest of 30.01inHg at 12 AM, a lowest point of 29.87inHg at 6 PM with an avg 29.92inHg.
Mount Vernon, SD Weather – 9-27 – Overcast
69° / 61°
Overcast
Overcast is in the forecast for Mount Vernon, with a high of 69°F and a low of 61°F. The chance of rain is 83% with an estimated 0.12in. Wind will be moderate, blowing around 18mph on average and gusts of 35.6mph at 11 PM. High humidity with average of 89% is anticipated, the maximum being 99% at 1 AM and 79% being its lowest at 8 PM. Barometric pressure is its highest of 29.98inHg at 11 AM, a lowest point of 29.86inHg at 8 PM with an avg 29.93inHg.
Mount Vernon, SD Weather – 9-28 – Overcast
76° / 60°
Overcast
In Mount Vernon, cloud-filled skies are likely with a high near 76°F and a low around 60°F. Rainfall predicted to have a 71% chance with an estimated 0.09in. Winds will be strong at speeds peaking at 23mph and gusts of 36.3mph at 12 AM. The humidity will be on the higher side, averaging about 77%, the maximum being 97% at 4 AM and 55% being its lowest at 4 PM. Barometric pressure is its highest of 29.89inHg at 4 AM, a lowest point of 29.63inHg at 11 PM with an avg 29.75inHg.
Mount Vernon, SD Weather – 9-29 – Overcast
69° / 46°
Overcast
In Mount Vernon, skies will be overcast with highs near 69°F and lows around 46°F. The chance of rain is 84% with an estimated 0.56in. Winds will be strong at speeds peaking at 21mph and gusts of 35.2mph at 7 PM. The humidity will be on the higher side, averaging about 76%, the maximum being 92% at 7 AM and 53% being its lowest at 7 PM. Barometric pressure is its highest of 29.99inHg at 11 PM, a lowest point of 29.53inHg at 4 AM with an avg 29.75inHg.

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