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Jefferson SD Weather - Overcast - 72°F
Overcast
72°F
Updated 6:42 am
Feels Like 75°F
Humidity 93%
Wind SE 10 mph
Barometer  29.93 in
Dew Point 70°F
Jefferson SD Weather - Overcast - 22°C
Overcast
22°C
Updated 6:42 am
Feels Like 24°C
Humidity 93%
Wind SE 16 km/h
Barometer  101.4 kPa
Dew Point 21°C
Jefferson, SD Weather and Current Conditionsjefferson sd weather forecast

Jefferson, SD Weather Forecast

Jefferson South Dakota WeatherJefferson, South Dakota Weather Weather Forecast
14 day API Jefferson, SD weather forecast. Note. Our 7-day weather forecast for Jefferson, South Dakota is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Jefferson, SD Weather Forecast Dated: 642 AM Tue Sep 08 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Tuesday, September 8, 2026

Mid-Morning
Jefferson Weather - 2026-09-08 - Morning - Rain
75°F 24°C
Rain
Mid-Afternoon
Jefferson Weather - 2026-09-08 - Afternoon - Scattered Showers
91°F 33°C
Scattered Showers
Early-Evening
Jefferson Weather - 2026-09-08 - Evening - Light Showers
80°F 27°C
Light Showers
Very hot with temperatures reaching 91°F 33°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds out of the WNW at 16 mph 26 km/h.

Wednesday, September 9, 2026

Mid-Morning
Jefferson Weather - 2026-09-09 - Morning - Sunny
69°F 21°C
Sunny
Mid-Afternoon
Jefferson Weather - 2026-09-09 - Afternoon - Sunny
86°F 30°C
Sunny
Early-Evening
Jefferson Weather - 2026-09-09 - Evening - Sunny
78°F 25°C
Sunny
Balmy with temperatures reaching 86°F 30°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds switching from the NNW to the N at 10 mph 15 km/h.

Thursday, September 10, 2026

Mid-Morning
Jefferson Weather - 2026-09-10 - Morning - Sunny
66°F 19°C
Sunny
Mid-Afternoon
Jefferson Weather - 2026-09-10 - Afternoon - Sunny
87°F 31°C
Sunny
Early-Evening
Jefferson Weather - 2026-09-10 - Evening - Sunny
83°F 28°C
Sunny
Quite warm around 87°F 31°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds increasing from the SE at 6 mph 9 km/h to SE at 15 mph 24 km/h. Gusts up to 28 mph 44 km/h.

Friday, September 11, 2026

Mid-Morning
Jefferson Weather - 2026-09-11 - Morning - Scattered Showers
74°F 23°C
Scattered Showers
Mid-Afternoon
Jefferson Weather - 2026-09-11 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
Jefferson Weather - 2026-09-11 - Evening - Sunny
78°F 26°C
Sunny
Hot temperatures near 91°F 33°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds swinging from the S to the SSW at 12 mph 19 km/h.

Saturday, September 12, 2026

Mid-Morning
Jefferson Weather - 2026-09-12 - Morning - Cloudy
56°F 14°C
Cloudy
Mid-Afternoon
Jefferson Weather - 2026-09-12 - Afternoon - Partly Cloudy
88°F 31°C
Partly Cloudy
Early-Evening
Jefferson Weather - 2026-09-12 - Evening - Overcast
85°F 30°C
Overcast
Very warm with a high of 88°F 31°C, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds shifting from the NNW to the ESE at 13 mph 21 km/h. Gusts up to 22 mph 35 km/h.

Sunday, September 13, 2026

Mid-Morning
Jefferson Weather - 2026-09-13 - Morning - Scattered Showers
74°F 24°C
Scattered Showers
Mid-Afternoon
Jefferson Weather - 2026-09-13 - Afternoon - Light Showers
87°F 31°C
Light Showers
Early-Evening
Jefferson Weather - 2026-09-13 - Evening - Scattered Showers
76°F 25°C
Scattered Showers
Very warm near 87°F 31°C, though humidity makes it feel like 92°F 33°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the SSE to the W at 7 mph 12 km/h.

Monday, September 14, 2026

Mid-Morning
Jefferson Weather - 2026-09-14 - Morning - Overcast
52°F 11°C
Overcast
Mid-Afternoon
Jefferson Weather - 2026-09-14 - Afternoon - Sunny
61°F 16°C
Sunny
Early-Evening
Jefferson Weather - 2026-09-14 - Evening - Sunny
54°F 12°C
Sunny
Comfortable at 61°F 16°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure rising. Winds out of the NW at 20 mph 32 km/h. Gusts up to 27 mph 43 km/h.

Tuesday, September 15, 2026

Mid-Morning
Jefferson Weather - 2026-09-15 - Morning - Sunny
45°F 7°C
Sunny
Mid-Afternoon
Jefferson Weather - 2026-09-15 - Afternoon - Sunny
60°F 16°C
Sunny
Early-Evening
Jefferson Weather - 2026-09-15 - Evening - Sunny
60°F 16°C
Sunny
Cool with a high near 60°F 16°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the NNW to the WSW at 4 mph 5 km/h.

Wednesday, September 16, 2026

Mid-Morning
Jefferson Weather - 2026-09-16 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Jefferson Weather - 2026-09-16 - Afternoon - Partly Cloudy
69°F 21°C
Partly Cloudy
Early-Evening
Jefferson Weather - 2026-09-16 - Evening - Sunny
69°F 20°C
Sunny
Mild temperatures up to 69°F 21°C, sunny through the afternoon, turning overcast this evening, with steady humidity and steady pressure.

Thursday, September 17, 2026

Mid-Morning
Jefferson Weather - 2026-09-17 - Morning - Overcast
58°F 14°C
Overcast
Mid-Afternoon
Jefferson Weather - 2026-09-17 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Jefferson Weather - 2026-09-17 - Evening - Overcast
67°F 19°C
Overcast
Mild with a high of 72°F 22°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds SSW at 20 mph 32 km/h. Gusts up to 31 mph 50 km/h.

Friday, September 18, 2026

Mid-Morning
Jefferson Weather - 2026-09-18 - Morning - Overcast
65°F 19°C
Overcast
Mid-Afternoon
Jefferson Weather - 2026-09-18 - Afternoon - Scattered Showers
58°F 15°C
Scattered Showers
Early-Evening
Jefferson Weather - 2026-09-18 - Evening - Scattered Showers
48°F 9°C
Scattered Showers
Comfortable at 58°F 15°C, scattered downpours possible, with steady humidity and barometric pressure rising. Winds shifting from the SSW to the NNW at 15 mph 25 km/h. Gusts up to 32 mph 51 km/h.

Saturday, September 19, 2026

Mid-Morning
Jefferson Weather - 2026-09-19 - Morning - Overcast
45°F 7°C
Overcast
Mid-Afternoon
Jefferson Weather - 2026-09-19 - Afternoon - Overcast
57°F 14°C
Overcast
Early-Evening
Jefferson Weather - 2026-09-19 - Evening - Overcast
55°F 13°C
Overcast
Crisp with a high near 57°F 14°C, cloudy in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and barometric pressure falling. Winds turning from the SE to the ESE at 5 mph 8 km/h.

Sunday, September 20, 2026

Mid-Morning
Jefferson Weather - 2026-09-20 - Morning - Overcast
49°F 9°C
Overcast
Mid-Afternoon
Jefferson Weather - 2026-09-20 - Afternoon - Partly Cloudy
63°F 17°C
Partly Cloudy
Early-Evening
Jefferson Weather - 2026-09-20 - Evening - Sunny
61°F 17°C
Sunny
Refreshing around 63°F 17°C, cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling. Winds switching from the SSE to the SE at 9 mph 15 km/h.

Monday, September 21, 2026

Mid-Morning
Jefferson Weather - 2026-09-21 - Morning - Cloudy
58°F 15°C
Cloudy
Mid-Afternoon
Jefferson Weather - 2026-09-21 - Afternoon - Sunny
78°F 26°C
Sunny
Early-Evening
Jefferson Weather - 2026-09-21 - Evening - Sunny
75°F 24°C
Sunny
Mild temperatures up to 78°F 26°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the S to the SSE at 10 mph 16 km/h. Gusts up to 21 mph 34 km/h.

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Weather by the Numbers

Tue, 8th
Jefferson SD Weather - Tuesday, Sep 8, 2026 - Patchy Rain Nearby
Hi: 92°F 33°C
Lo: 72°F 22°C
Sunrise 06:59 AM
Sunset 07:48 PM
Wind WSW 7 mph12 km/h
Dew Point 62°F17°C
uv Index 2
Barometric Pressure 29.85 in1011 mb
POP 7% *
Humidity 43%
Wed, 9th
Jefferson SD Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 86°F 30°C
Lo: 68°F 20°C
Sunrise 07:00 AM
Sunset 07:47 PM
Wind NNW 8 mph13 km/h
Dew Point 44°F6°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 0% *
Humidity 26%
Thu, 10th
Jefferson SD Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 87°F 31°C
Lo: 61°F 16°C
Sunrise 07:01 AM
Sunset 07:45 PM
Wind SSE 10 mph16 km/h
Dew Point 43°F6°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 0% *
Humidity 26%
Fri, 11th
Jefferson SD Weather - Friday, Sep 11, 2026 - Sunny
Hi: 91°F 33°C
Lo: 69°F 21°C
Sunrise 07:02 AM
Sunset 07:43 PM
Wind W 9 mph14 km/h
Dew Point 55°F13°C
uv Index 6
Barometric Pressure 29.65 in1004 mb
POP 1% *
Humidity 33%
Sat, 12th
Jefferson SD Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 90°F 32°C
Lo: 56°F 14°C
Sunrise 07:03 AM
Sunset 07:41 PM
Wind ESE 14 mph23 km/h
Dew Point 53°F12°C
uv Index 7
Barometric Pressure 29.8 in1009 mb
POP 3% *
Humidity 39%
Sun, 13th
Jefferson SD Weather - Sunday, Sep 13, 2026 - Light Rain Shower
Hi: 88°F 31°C
Lo: 69°F 21°C
Sunrise 07:04 AM
Sunset 07:40 PM
Wind SSW 11 mph17 km/h
Dew Point 62°F16°C
uv Index 6
Barometric Pressure 29.62 in1003 mb
POP 22% *
Humidity 50%
Mon, 14th
Jefferson SD Weather - Monday, Sep 14, 2026 - Cloudy
Hi: 70°F 21°C
Lo: 46°F 8°C
Sunrise 07:05 AM
Sunset 07:38 PM
Wind NW 19 mph31 km/h
Dew Point 39°F4°C
uv Index 3
Barometric Pressure 30.09 in1019 mb
POP 4% *
Humidity 54%
Tue, 15th
Jefferson SD Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 62°F 17°C
Lo: 40°F 5°C
Sunrise 07:06 AM
Sunset 07:36 PM
Wind NW 10 mph16 km/h
Dew Point 34°F1°C
uv Index 4
Barometric Pressure 30.33 in1027 mb
POP 2% *
Humidity 48%
Wed, 16th
Jefferson SD Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 71°F 22°C
Lo: 50°F 10°C
Sunrise 07:07 AM
Sunset 07:34 PM
Wind SSW 6 mph9 km/h
Dew Point 41°F5°C
uv Index 5
Barometric Pressure 30.33 in1027 mb
POP 2% *
Humidity 44%
Thu, 17th
Jefferson SD Weather - Thursday, Sep 17, 2026 - Overcast
Hi: 74°F 23°C
Lo: 58°F 14°C
Sunrise 07:08 AM
Sunset 07:32 PM
Wind S 18 mph29 km/h
Dew Point 49°F9°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 6% *
Humidity 57%
Fri, 18th
Jefferson SD Weather - Friday, Sep 18, 2026 - Light Rain Shower
Hi: 66°F 19°C
Lo: 45°F 7°C
Sunrise 07:10 AM
Sunset 07:31 PM
Wind E 18 mph28 km/h
Dew Point 57°F14°C
uv Index 4
Barometric Pressure 30 in1016 mb
POP 32% *
Humidity 79%
Sat, 19th
Jefferson SD Weather - Saturday, Sep 19, 2026 - Partly Cloudy
Hi: 58°F 14°C
Lo: 42°F 6°C
Sunrise 07:11 AM
Sunset 07:29 PM
Wind NNE 10 mph16 km/h
Dew Point 29°F-2°C
uv Index 4
Barometric Pressure 30.45 in1031 mb
POP 8% *
Humidity 42%
Sun, 20th
Jefferson SD Weather - Sunday, Sep 20, 2026 - Partly Cloudy
Hi: 65°F 18°C
Lo: 46°F 8°C
Sunrise 07:12 AM
Sunset 07:27 PM
Wind S 12 mph20 km/h
Dew Point 34°F1°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 3% *
Humidity 44%
Mon, 21st
Jefferson SD Weather - Monday, Sep 21, 2026 - Sunny
Hi: 80°F 27°C
Lo: 52°F 11°C
Sunrise 07:13 AM
Sunset 07:25 PM
Wind S 13 mph21 km/h
Dew Point 49°F9°C
uv Index 6
Barometric Pressure 30.06 in1018 mb
POP 2% *
Humidity 47%
* POP = Probability of Precipitation. Data for 12:00 PM.