Weather Alert
Mount Vernon Weather Warning NWS WEATHER ALERT FOR THE MOUNT VERNON, SD AREA - Issued: 326 PM CDT Wed Sep 23 2026 Mount Vernon Weather Warning

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Mount Vernon, SD Weather - Hour by Hour Forecast

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Mount Vernon, SD Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Mostly Clear. Temperature is 67°F19°C, dew point 58°F14°C, humidity 72%. Wind direction is SSE at 15 mph24 km/h with visibility of 10 mi16 km. Barometric pressure is 30.17 in1022 mb.
Tonight - Cloudy with a slight chance of thunderstorms. A chance of showers this evening, then showers likely after midnight. Lows in the up.. Full Forecast
Thursday - Cloudy. A chance of showers in the morning. Highs in the upper 60s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of ra.. Full Forecast

Mount Vernon Hourly Weather

24 Hour Forecast Scroll
Wed, Sep 23
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Mount Vernon, SD Hourly Weather - Cloudy - 6:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 7:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 8:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 9:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 10:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 11:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 12:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 1:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 2:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 3:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 4:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 5:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 6:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 7:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 8:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 9:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 10:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 11:00 AM Mount Vernon, SD Hourly Weather - Cloudy - 12:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 1:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 2:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 3:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 4:00 PM Mount Vernon, SD Hourly Weather - Cloudy - 5:00 PM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
69°F21°C 69°F21°C 67°F19°C 66°F19°C 64°F18°C 63°F17°C 63°F17°C 62°F17°C 62°F17°C 62°F17°C 62°F17°C 61°F16°C 61°F16°C 60°F16°C 60°F16°C 61°F16°C 61°F16°C 62°F17°C 64°F18°C 65°F18°C 66°F19°C 66°F19°C 67°F19°C 66°F19°C
Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain - - - -
22% 22% 49% 49% 49% 49% 49% 49% 72% 72% 72% 72% 72% 72% 48% 48% 48% 48% 48% 48% 10% 10% 10% 10%
58°F14°C 58°F14°C 58°F14°C 57°F14°C 57°F14°C 57°F14°C 56°F13°C 56°F13°C 56°F13°C 56°F13°C 56°F13°C 56°F13°C 56°F13°C 56°F13°C 57°F14°C 57°F14°C 58°F14°C 59°F15°C 60°F16°C 61°F16°C 61°F16°C 61°F16°C 61°F16°C 61°F16°C
68% 68% 73% 73% 78% 81% 78% 81% 81% 81% 81% 84% 84% 87% 90% 87% 90% 90% 87% 87% 84% 84% 81% 84%
SSE SE SE SE SE SE SSE SSE SSE SSE SSE SSE SSE SSE SSE SSE SSE SSE S S S S S SSE
14 mph 14 mph 14 mph 15 mph 15 mph 15 mph 13 mph 13 mph 13 mph 12 mph 12 mph 12 mph 13 mph 13 mph 13 mph 13 mph 13 mph 13 mph 11 mph 11 mph 11 mph 9 mph 9 mph 9 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km 5 mi8 km 5 mi8 km 3 mi5 km 3 mi5 km 3 mi5 km 5 mi8 km 5 mi8 km 5 mi8 km 6 mi10 km 6 mi10 km 6 mi10 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KMHE model statistics.

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Prob Precip % = Probability of Precipitation.

Mount Vernon 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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