Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Olivia Regional Airport (KOVL)

Lat: 44.78° N Lon: 95.03° W Elev: 1079 ft.

Heavy Rain

72°F

22°C

Humidity 88%
Wind Speed E 12 mph
Barometer 29.91 in
Dewpoint 68°F (20°C)
Visibility 7.00 mi
Last update 18 Aug 4:35 am CDT
Detailed forecast for

Renville County

Today
Decreasing clouds. Showers likely early in the morning. Chance of thunderstorms early in the morning, then slight chance of thunderstorms late in the morning. Some thunderstorms may produce heavy rainfall early in the morning. Highs in the lower 80s. South winds 5 to 10 mph shifting to the northwest in the afternoon. Chance of precipitation 70 percent.
Tonight
Partly cloudy. Patchy fog through the night. Lows in the mid 60s. North winds up to 5 mph.
Tuesday
Mostly sunny. Patchy fog in the morning. Highs in the lower 80s. North winds up to 5 mph.
Tuesday Night
Mostly clear. Patchy fog through the night. Lows in the lower 60s. Northeast winds up to 5 mph in the evening becoming light.
Wednesday
Sunny. Patchy fog in the morning. Highs around 80. East winds up to 5 mph.
Wednesday Night
Clear. Patchy fog after midnight. Lows in the lower 60s.
Thursday
Sunny. Highs in the lower 80s.
Thursday Night
Mostly clear in the evening, then mostly cloudy with chance of showers after midnight. Lows in the mid 60s. Chance of showers 40 percent.
Friday
Mostly sunny. Highs in the upper 70s.
Friday Night
Clear. Lows in the mid 50s.
Saturday
Sunny. Highs around 70.
Saturday Night
Mostly clear. Lows in the lower 50s.
Sunday
Sunny. Highs in the upper 60s.



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426 AM CDT Mon Aug 18 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database