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Sully County SD Weather - Light Rain - 44°F
Light Rain
44°F
Updated 2:07 am
Feels Like 46°F
Humidity 100%
Wind ESE 6 mph
Barometer  30.15 in
Dew Point 44°F
Sully County SD Weather - Light Rain - 7°C
Light Rain
7°C
Updated 2:07 am
Feels Like 8°C
Humidity 100%
Wind ESE 10 km/h
Barometer  102 kPa
Dew Point 7°C
Sully County, SD Weather and Current Conditionssully county sd weather forecast

Sully County, SD Weather Forecast

Sully County South Dakota WeatherSully County, South Dakota Weather Weather Forecast
Here is the API 14 day weather forecast for Sully County, South Dakota. Note: The 7-day weather forecast for Sully County, SD is the most reliable and accurate weather forecast. This template should only be used as a probable scenario. Forecasting weather beyond the next 7 days is a challenge.
Sully County, SD Weather Forecast Dated: 207 AM Thu Oct 15 2026
Expect a cool pattern with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.

Thursday, October 15, 2026

Mid-Morning
Sully County Weather - 2026-10-15 - Morning - Overcast
49°F 10°C
Overcast
Mid-Afternoon
Sully County Weather - 2026-10-15 - Afternoon - Cloudy
53°F 12°C
Cloudy
Early-Evening
Sully County Weather - 2026-10-15 - Evening - Overcast
46°F 8°C
Overcast
Brisk around 53°F 12°C, overcast in the morning, becoming cloudy through the afternoon and evening, with lower humidity and barometric pressure rising. Winds picking up from W at 8 mph 13 km/h to NW at 22 mph 36 km/h. Gusts up to 36 mph 57 km/h.

Friday, October 16, 2026

Mid-Morning
Sully County Weather - 2026-10-16 - Morning - Sunny
37°F 3°C
Sunny
Mid-Afternoon
Sully County Weather - 2026-10-16 - Afternoon - Sunny
51°F 10°C
Sunny
Early-Evening
Sully County Weather - 2026-10-16 - Evening - Sunny
46°F 8°C
Sunny
Cool and brisk at 51°F 10°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds switching from the NNW to the SSE at 7 mph 12 km/h.

Saturday, October 17, 2026

Mid-Morning
Sully County Weather - 2026-10-17 - Morning - Sunny
44°F 7°C
Sunny
Mid-Afternoon
Sully County Weather - 2026-10-17 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Sully County Weather - 2026-10-17 - Evening - Sunny
64°F 18°C
Sunny
Enjoyable around 71°F 22°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds SSW at 11 mph 18 km/h.

Sunday, October 18, 2026

Mid-Morning
Sully County Weather - 2026-10-18 - Morning - Sunny
49°F 10°C
Sunny
Mid-Afternoon
Sully County Weather - 2026-10-18 - Afternoon - Overcast
72°F 22°C
Overcast
Early-Evening
Sully County Weather - 2026-10-18 - Evening - Overcast
61°F 16°C
Overcast
Mild temperatures up to 72°F 22°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and barometric pressure rising. Winds picking up from SE at 4 mph 6 km/h to N at 13 mph 21 km/h. Gusts up to 26 mph 42 km/h.

Monday, October 19, 2026

Mid-Morning
Sully County Weather - 2026-10-19 - Morning - Sunny
44°F 7°C
Sunny
Mid-Afternoon
Sully County Weather - 2026-10-19 - Afternoon - Sunny
63°F 17°C
Sunny
Early-Evening
Sully County Weather - 2026-10-19 - Evening - Sunny
55°F 13°C
Sunny
Refreshing around 63°F 17°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds shifting from the E to the ESE at 9 mph 14 km/h. Gusts up to 20 mph 32 km/h.

Tuesday, October 20, 2026

Mid-Morning
Sully County Weather - 2026-10-20 - Morning - Sunny
52°F 11°C
Sunny
Mid-Afternoon
Sully County Weather - 2026-10-20 - Afternoon - Sunny
69°F 21°C
Sunny
Early-Evening
Sully County Weather - 2026-10-20 - Evening - Sunny
66°F 19°C
Sunny
Pleasant near 69°F 21°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds turning from the SE to the SSE at 18 mph 28 km/h. Gusts up to 32 mph 51 km/h.

Wednesday, October 21, 2026

Mid-Morning
Sully County Weather - 2026-10-21 - Morning - Sunny
60°F 15°C
Sunny
Mid-Afternoon
Sully County Weather - 2026-10-21 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Sully County Weather - 2026-10-21 - Evening - Sunny
68°F 20°C
Sunny
Comfortable with temperatures reaching 73°F 23°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds out of the S at 15 mph 24 km/h. Gusts up to 24 mph 39 km/h.

Thursday, October 22, 2026

Mid-Morning
Sully County Weather - 2026-10-22 - Morning - Overcast
66°F 19°C
Overcast
Mid-Afternoon
Sully County Weather - 2026-10-22 - Afternoon - Scattered Showers
73°F 23°C
Scattered Showers
Early-Evening
Sully County Weather - 2026-10-22 - Evening - Overcast
67°F 19°C
Overcast
Enjoyable around 73°F 23°C, scattered downpours possible, with lower humidity and steady pressure. Winds moving from the SSE to the WSW at 16 mph 25 km/h. Gusts up to 26 mph 41 km/h.

Friday, October 23, 2026

Mid-Morning
Sully County Weather - 2026-10-23 - Morning - Overcast
51°F 10°C
Overcast
Mid-Afternoon
Sully County Weather - 2026-10-23 - Afternoon - Sunny
57°F 14°C
Sunny
Early-Evening
Sully County Weather - 2026-10-23 - Evening - Overcast
50°F 11°C
Overcast
Brisk around 57°F 14°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure rising. Winds WNW at 18 mph 29 km/h. Gusts up to 22 mph 36 km/h.

Saturday, October 24, 2026

Mid-Morning
Sully County Weather - 2026-10-24 - Morning - Scattered Showers
43°F 6°C
Scattered Showers
Mid-Afternoon
Sully County Weather - 2026-10-24 - Afternoon - Sunny
49°F 9°C
Sunny
Early-Evening
Sully County Weather - 2026-10-24 - Evening - Sunny
43°F 6°C
Sunny
Cool and brisk at 49°F 9°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds shifting from the NW to the WNW at 8 mph 13 km/h.

Sunday, October 25, 2026

Mid-Morning
Sully County Weather - 2026-10-25 - Morning - Sunny
38°F 4°C
Sunny
Mid-Afternoon
Sully County Weather - 2026-10-25 - Afternoon - Sunny
55°F 13°C
Sunny
Early-Evening
Sully County Weather - 2026-10-25 - Evening - Sunny
49°F 10°C
Sunny
Chilly near 55°F 13°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the SW to the W at 15 mph 23 km/h. Gusts up to 22 mph 36 km/h.

Monday, October 26, 2026

Mid-Morning
Sully County Weather - 2026-10-26 - Morning - Overcast
47°F 8°C
Overcast
Mid-Afternoon
Sully County Weather - 2026-10-26 - Afternoon - Drizzle
52°F 11°C
Drizzle
Early-Evening
Sully County Weather - 2026-10-26 - Evening - Scattered Showers
46°F 8°C
Scattered Showers
Crisp with a high near 52°F 11°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds switching from the WNW to the NNW at 10 mph 15 km/h.

Tuesday, October 27, 2026

Mid-Morning
Sully County Weather - 2026-10-27 - Morning - Overcast
39°F 4°C
Overcast
Mid-Afternoon
Sully County Weather - 2026-10-27 - Afternoon - Sunny
53°F 12°C
Sunny
Early-Evening
Sully County Weather - 2026-10-27 - Evening - Sunny
48°F 9°C
Sunny
Brisk around 53°F 12°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds moving from the SW to the SSE at 9 mph 14 km/h.

Wednesday, October 28, 2026

Mid-Morning
Sully County Weather - 2026-10-28 - Morning - Overcast
53°F 12°C
Overcast
Mid-Afternoon
Sully County Weather - 2026-10-28 - Afternoon - Scattered Showers
58°F 14°C
Scattered Showers
Early-Evening
Sully County Weather - 2026-10-28 - Evening - Overcast
51°F 11°C
Overcast
Mildly cool near 58°F 14°C, scattered downpours possible, with steady humidity and barometric pressure rising. Winds swinging from the W to the NW at 10 mph 15 km/h.

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Weather by the Numbers

Thu, 15th
Sully County SD Weather - Thursday, Oct 15, 2026 - Overcast
Hi: 56°F 13°C
Lo: 42°F 6°C
Sunrise 07:56 AM
Sunset 06:55 PM
Wind NW 22 mph35 km/h
Dew Point 29°F-2°C
uv Index 2
Barometric Pressure 30.18 in1022 mb
POP 10% *
Humidity 36%
Fri, 16th
Sully County SD Weather - Friday, Oct 16, 2026 - Sunny
Hi: 51°F 11°C
Lo: 37°F 3°C
Sunrise 07:57 AM
Sunset 06:53 PM
Wind NNW 7 mph12 km/h
Dew Point 23°F-5°C
uv Index 2
Barometric Pressure 30.65 in1038 mb
POP 1% *
Humidity 40%
Sat, 17th
Sully County SD Weather - Saturday, Oct 17, 2026 - Sunny
Hi: 72°F 22°C
Lo: 41°F 5°C
Sunrise 07:59 AM
Sunset 06:52 PM
Wind SSW 13 mph21 km/h
Dew Point 25°F-4°C
uv Index 3
Barometric Pressure 30.03 in1017 mb
POP 0% *
Humidity 26%
Sun, 18th
Sully County SD Weather - Sunday, Oct 18, 2026 - Sunny
Hi: 72°F 22°C
Lo: 47°F 9°C
Sunrise 08:00 AM
Sunset 06:50 PM
Wind NNE 11 mph18 km/h
Dew Point 30°F-1°C
uv Index 2
Barometric Pressure 29.85 in1011 mb
POP 1% *
Humidity 27%
Mon, 19th
Sully County SD Weather - Monday, Oct 19, 2026 - Sunny
Hi: 64°F 18°C
Lo: 42°F 6°C
Sunrise 08:01 AM
Sunset 06:48 PM
Wind ESE 7 mph12 km/h
Dew Point 20°F-6°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 0% *
Humidity 23%
Tue, 20th
Sully County SD Weather - Tuesday, Oct 20, 2026 - Sunny
Hi: 71°F 22°C
Lo: 47°F 8°C
Sunrise 08:02 AM
Sunset 06:47 PM
Wind SSE 16 mph26 km/h
Dew Point 44°F7°C
uv Index 5
Barometric Pressure 30.03 in1017 mb
POP 2% *
Humidity 54%
Wed, 21st
Sully County SD Weather - Wednesday, Oct 21, 2026 - Sunny
Hi: 74°F 23°C
Lo: 56°F 13°C
Sunrise 08:04 AM
Sunset 06:45 PM
Wind S 14 mph22 km/h
Dew Point 54°F12°C
uv Index 6
Barometric Pressure 29.83 in1010 mb
POP 4% *
Humidity 62%
Thu, 22nd
Sully County SD Weather - Thursday, Oct 22, 2026 - Patchy Rain Nearby
Hi: 73°F 23°C
Lo: 58°F 14°C
Sunrise 08:05 AM
Sunset 06:43 PM
Wind SSE 18 mph30 km/h
Dew Point 59°F15°C
uv Index 5
Barometric Pressure 29.59 in1002 mb
POP 18% *
Humidity 70%
Fri, 23rd
Sully County SD Weather - Friday, Oct 23, 2026 - Sunny
Hi: 58°F 14°C
Lo: 45°F 7°C
Sunrise 08:06 AM
Sunset 06:42 PM
Wind WNW 17 mph27 km/h
Dew Point 35°F2°C
uv Index 4
Barometric Pressure 29.74 in1007 mb
POP 2% *
Humidity 48%
Sat, 24th
Sully County SD Weather - Saturday, Oct 24, 2026 - Cloudy
Hi: 49°F 9°C
Lo: 39°F 4°C
Sunrise 08:08 AM
Sunset 06:40 PM
Wind NW 13 mph21 km/h
Dew Point 28°F-2°C
uv Index 2
Barometric Pressure 30.36 in1028 mb
POP 3% *
Humidity 48%
Sun, 25th
Sully County SD Weather - Sunday, Oct 25, 2026 - Sunny
Hi: 57°F 14°C
Lo: 35°F 2°C
Sunrise 08:09 AM
Sunset 06:39 PM
Wind SW 13 mph22 km/h
Dew Point 20°F-7°C
uv Index 3
Barometric Pressure 30.27 in1025 mb
POP 1% *
Humidity 33%
Mon, 26th
Sully County SD Weather - Monday, Oct 26, 2026 - Sunny
Hi: 53°F 12°C
Lo: 40°F 4°C
Sunrise 08:10 AM
Sunset 06:37 PM
Wind WNW 14 mph23 km/h
Dew Point 35°F2°C
uv Index 4
Barometric Pressure 30.06 in1018 mb
POP 20% *
Humidity 55%
Tue, 27th
Sully County SD Weather - Tuesday, Oct 27, 2026 - Overcast
Hi: 54°F 12°C
Lo: 35°F 2°C
Sunrise 08:12 AM
Sunset 06:35 PM
Wind SSW 7 mph12 km/h
Dew Point 33°F1°C
uv Index 2
Barometric Pressure 30.12 in1020 mb
POP 6% *
Humidity 58%
Wed, 28th
Sully County SD Weather - Wednesday, Oct 28, 2026 - Overcast
Hi: 59°F 15°C
Lo: 45°F 7°C
Sunrise 08:13 AM
Sunset 06:34 PM
Wind NW 16 mph26 km/h
Dew Point 42°F6°C
uv Index 3
Barometric Pressure 29.65 in1004 mb
POP 14% *
Humidity 58%
* POP = Probability of Precipitation. Data for 12:00 PM.