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Current Weather Conditions for Jefferson, SD

Sunny, with a high near 99. Heat index values as high as 107. South wind 20 to 25 mph, with gusts as high as 35 mph.
83°F

Conditions

Wind: 20 mph S
Humidity: 70%
Probability of Precipitation: 1%

Hourly Forcast (next 12 hours)

2 PM 3 PM 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM 12 AM 1 AM 2 AM
83° 86° 89° 91° 93° 96° 97° 98° 98° 97° 95° 94° 87°

Upcoming Week

Day Forecast High Low
Today
Sunny
Sunny, with a high near 99. Heat index values as high as 107. South wind 20 to 25 mph, with gusts as high as 35 mph.
98°F 81°F
Tonight
Partly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between midnight and 4am, then a chance of showers and thunderstorms between 4am and 5am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Heat index values as high as 106. South wind 5 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
98°F 81°F
Tuesday
Mostly Sunny
Mostly sunny, with a high near 95. South wind around 5 mph. New rainfall amounts less than a tenth of an inch possible.
98°F 81°F
Tuesday Night
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 71. South southeast wind 5 to 10 mph. Chance of precipitation is 60%.
98°F 81°F
Wednesday
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 94. South wind 10 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.
98°F 81°F
Wednesday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 71. South southwest wind 5 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
98°F 81°F
Thursday
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94.
98°F 81°F
Thursday Night
Rain Showers Likely
Rain showers likely. Mostly clear, with a low around 72. Chance of precipitation is 60%.
98°F 81°F
Friday
Chance Rain Showers then Mostly Sunny
A chance of rain showers before 7am. Mostly sunny, with a high near 92. Chance of precipitation is 40%.
98°F 81°F
Friday Night
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 7pm. Mostly clear, with a low around 73.
98°F 81°F
Independence Day
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92.
98°F 81°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 40%.
98°F 81°F
Sunday
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
98°F 81°F
Sunday Night
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly clear, with a low around 64.
98°F 81°F
Data provided by weather.gov