Weather Alert
Grenville Weather Warning NWS WEATHER ALERT FOR THE GRENVILLE, SD AREA - Issued: 315 AM CDT Fri Sep 11 2026 Grenville Weather Warning

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Grenville, SD Weather - Hour by Hour Forecast

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Grenville, SD Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 77°F25°C, dew point 63°F17°C, humidity 61%. Wind direction is NNW at 16 mph26 km/h with visibility of N/A mi0 km. Barometric pressure is 29.55 in1000 mb.
Tonight - Partly cloudy this evening, then becoming mostly clear. Cooler with lows in the lower 50s. Northwest winds 15 to 20 mph. Gusts up .. Full Forecast
Saturday - Partly sunny. Not as warm with highs in the upper 60s. Northwest winds 10 to 15 mph with gusts up to 25 mph... Full Forecast

Grenville Hourly Weather

24 Hour Forecast Scroll
Fri, Sep 11
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Grenville, SD Hourly Weather - Mostly Cloudy - 7:00 PM Grenville, SD Hourly Weather - Mostly Cloudy - 8:00 PM Grenville, SD Hourly Weather - Mostly Cloudy - 9:00 PM Grenville, SD Hourly Weather - Mostly Cloudy - 10:00 PM Grenville, SD Hourly Weather - Mostly Cloudy - 11:00 PM Grenville, SD Hourly Weather - Mostly Cloudy - 12:00 AM Grenville, SD Hourly Weather - Mostly Cloudy - 1:00 AM Grenville, SD Hourly Weather - Mostly Cloudy - 2:00 AM Grenville, SD Hourly Weather - Cloudy - 3:00 AM Grenville, SD Hourly Weather - Cloudy - 4:00 AM Grenville, SD Hourly Weather - Cloudy - 5:00 AM Grenville, SD Hourly Weather - Cloudy - 6:00 AM Grenville, SD Hourly Weather - Cloudy - 7:00 AM Grenville, SD Hourly Weather - Cloudy - 8:00 AM Grenville, SD Hourly Weather - Mostly Cloudy - 9:00 AM Grenville, SD Hourly Weather - Mostly Cloudy - 10:00 AM Grenville, SD Hourly Weather - Mostly Cloudy - 11:00 AM Grenville, SD Hourly Weather - Clear - 12:00 PM Grenville, SD Hourly Weather - Clear - 1:00 PM Grenville, SD Hourly Weather - Clear - 2:00 PM Grenville, SD Hourly Weather - Clear - 3:00 PM Grenville, SD Hourly Weather - Clear - 4:00 PM Grenville, SD Hourly Weather - Clear - 5:00 PM Grenville, SD Hourly Weather - Clear - 6:00 PM
Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Clear Clear Clear Clear Clear Clear Clear
63°F17°C 60°F16°C 56°F13°C 53°F12°C 51°F11°C 50°F10°C 48°F9°C 47°F8°C 47°F8°C 46°F8°C 45°F7°C 45°F7°C 44°F7°C 47°F8°C 51°F11°C 54°F12°C 56°F13°C 59°F15°C 61°F16°C 62°F17°C 63°F17°C 64°F18°C 63°F17°C 63°F17°C
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1% 1% 1% 1% 1% 1% 1% 23% 23% 23% 23% 23% 23% 8% 8% 8% 8% 8% 8% 2% 2% 2% 2% 2%
43°F6°C 43°F6°C 43°F6°C 43°F6°C 42°F6°C 41°F5°C 40°F4°C 39°F4°C 39°F4°C 38°F3°C 38°F3°C 39°F4°C 39°F4°C 40°F4°C 42°F6°C 43°F6°C 43°F6°C 42°F6°C 42°F6°C 41°F5°C 41°F5°C 40°F4°C 40°F4°C 41°F5°C
48% 53% 62% 69% 71% 71% 74% 74% 74% 73% 76% 79% 82% 76% 71% 66% 62% 53% 50% 46% 44% 41% 43% 44%
NNW NW NW NW NW NW NW NW NNW NNW NW NW NW NW NW NNW NNW NNW NNW NNW NNW NNW SSW S
12 mph 12 mph 4 mph 4 mph 4 mph 3 mph 3 mph 3 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 8 mph 8 mph 8 mph 8 mph 8 mph 8 mph 7 mph 7 mph 7 mph 6 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 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
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POP = Probability of Precipitation. ** Indicates missing data/values from K8D3 model statistics.

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Prob Precip % = Probability of Precipitation.

Grenville 36 Hour Forecast

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

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