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Fall River County SD Weather - Clear - 62°F
Clear
62°F
Updated 4:37 pm
Feels Like 71°F
Humidity 62%
Wind E 13 mph
Barometer  30.05 in
Dew Point 49°F
Fall River County SD Weather - Clear - 17°C
Clear
17°C
Updated 4:37 pm
Feels Like 22°C
Humidity 62%
Wind E 21 km/h
Barometer  101.8 kPa
Dew Point 9°C
Fall River County, SD Weather and Current Conditionsfall river county sd weather forecast

Fall River County, SD Weather Forecast

Fall River County South Dakota WeatherFall River County, South Dakota Weather Weather Forecast
14 Day API Fall River County, SD Weather Forecast. Note: Our 7 day Fall River County, South Dakota weather forecast is our most reliable, and specific forecast. This model should only be used as a probable scenario. Forecasting more than 7 days ahead is challenging.
Fall River County, SD Weather Forecast Dated: 437 PM Sun Sep 13 2026
Expect a mild stretch with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.

Sunday, September 13, 2026

Mid-Morning
Fall River County Weather - 2026-09-13 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Fall River County Weather - 2026-09-13 - Afternoon - Sunny
78°F 25°C
Sunny
Early-Evening
Fall River County Weather - 2026-09-13 - Evening - Scattered Showers
74°F 23°C
Scattered Showers
Pleasant near 78°F 25°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure falling. Winds turning from the E to the SSE at 13 mph 21 km/h.

Monday, September 14, 2026

Mid-Morning
Fall River County Weather - 2026-09-14 - Morning - Partly Cloudy
74°F 24°C
Partly Cloudy
Mid-Afternoon
Fall River County Weather - 2026-09-14 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
Fall River County Weather - 2026-09-14 - Evening - Sunny
69°F 20°C
Sunny
Comfortable with temperatures reaching 75°F 24°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure rising. Winds tapering down from WSW 19 mph 30 km/h to NNW 9 mph 15 km/h.

Tuesday, September 15, 2026

Mid-Morning
Fall River County Weather - 2026-09-15 - Morning - Sunny
54°F 12°C
Sunny
Mid-Afternoon
Fall River County Weather - 2026-09-15 - Afternoon - Cloudy
69°F 21°C
Cloudy
Early-Evening
Fall River County Weather - 2026-09-15 - Evening - Overcast
65°F 18°C
Overcast
Enjoyable around 69°F 21°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling. Winds moving from the SSE to the NE at 11 mph 18 km/h.

Wednesday, September 16, 2026

Mid-Morning
Fall River County Weather - 2026-09-16 - Morning - Sunny
60°F 16°C
Sunny
Mid-Afternoon
Fall River County Weather - 2026-09-16 - Afternoon - Sunny
85°F 30°C
Sunny
Early-Evening
Fall River County Weather - 2026-09-16 - Evening - Sunny
73°F 23°C
Sunny
Warm temperatures up to 85°F 30°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds swinging from the S to the NNE at 11 mph 17 km/h.

Thursday, September 17, 2026

Mid-Morning
Fall River County Weather - 2026-09-17 - Morning - Overcast
69°F 21°C
Overcast
Mid-Afternoon
Fall River County Weather - 2026-09-17 - Afternoon - Overcast
85°F 29°C
Overcast
Early-Evening
Fall River County Weather - 2026-09-17 - Evening - Nearby Thunderstorms
75°F 24°C
Nearby Thunderstorms
Very warm with a high of 85°F 29°C, locally heavy thunderstorms at times, with lower humidity and barometric pressure falling. Winds building from ESE at 3 mph 5 km/h to SW at 16 mph 26 km/h. Gusts up to 23 mph 37 km/h.

Friday, September 18, 2026

Mid-Morning
Fall River County Weather - 2026-09-18 - Morning - Sunny
71°F 21°C
Sunny
Mid-Afternoon
Fall River County Weather - 2026-09-18 - Afternoon - Overcast
71°F 22°C
Overcast
Early-Evening
Fall River County Weather - 2026-09-18 - Evening - Scattered Showers
67°F 20°C
Scattered Showers
Pleasant near 71°F 22°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the NW to the NNE at 7 mph 12 km/h.

Saturday, September 19, 2026

Mid-Morning
Fall River County Weather - 2026-09-19 - Morning - Overcast
62°F 17°C
Overcast
Mid-Afternoon
Fall River County Weather - 2026-09-19 - Afternoon - Overcast
71°F 22°C
Overcast
Early-Evening
Fall River County Weather - 2026-09-19 - Evening - Overcast
64°F 17°C
Overcast
Comfortable with temperatures reaching 71°F 22°C, overcast throughout the day, with lower humidity and steady pressure. Winds switching from the ENE to the NE at 12 mph 19 km/h. Gusts up to 21 mph 34 km/h.

Sunday, September 20, 2026

Mid-Morning
Fall River County Weather - 2026-09-20 - Morning - Light Showers
58°F 15°C
Light Showers
Mid-Afternoon
Fall River County Weather - 2026-09-20 - Afternoon - Light Showers
72°F 22°C
Light Showers
Early-Evening
Fall River County Weather - 2026-09-20 - Evening - Scattered Showers
56°F 13°C
Scattered Showers
Enjoyable around 72°F 22°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the ESE to the NE at 11 mph 17 km/h.

Monday, September 21, 2026

Mid-Morning
Fall River County Weather - 2026-09-21 - Morning - Sunny
58°F 15°C
Sunny
Mid-Afternoon
Fall River County Weather - 2026-09-21 - Afternoon - Sunny
70°F 21°C
Sunny
Early-Evening
Fall River County Weather - 2026-09-21 - Evening - Sunny
64°F 18°C
Sunny
Mild temperatures up to 70°F 21°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds SE at 10 mph 17 km/h.

Tuesday, September 22, 2026

Mid-Morning
Fall River County Weather - 2026-09-22 - Morning - Overcast
59°F 15°C
Overcast
Mid-Afternoon
Fall River County Weather - 2026-09-22 - Afternoon - Overcast
79°F 26°C
Overcast
Early-Evening
Fall River County Weather - 2026-09-22 - Evening - Partly Cloudy
73°F 23°C
Partly Cloudy
Mild with a high of 79°F 26°C, overcast through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds shifting from the S to the NNW at 6 mph 9 km/h.

Wednesday, September 23, 2026

Mid-Morning
Fall River County Weather - 2026-09-23 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Fall River County Weather - 2026-09-23 - Afternoon - Overcast
76°F 24°C
Overcast
Early-Evening
Fall River County Weather - 2026-09-23 - Evening - Sunny
69°F 21°C
Sunny
Pleasant near 76°F 24°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds building from E at 1 mph 2 km/h to NE at 9 mph 14 km/h.

Thursday, September 24, 2026

Mid-Morning
Fall River County Weather - 2026-09-24 - Morning - Partly Cloudy
66°F 19°C
Partly Cloudy
Mid-Afternoon
Fall River County Weather - 2026-09-24 - Afternoon - Overcast
82°F 28°C
Overcast
Early-Evening
Fall River County Weather - 2026-09-24 - Evening - Overcast
71°F 22°C
Overcast
Balmy with temperatures reaching 82°F 28°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure falling. Winds increasing from the S at 6 mph 9 km/h to W at 18 mph 30 km/h. Gusts up to 28 mph 46 km/h.

Friday, September 25, 2026

Mid-Morning
Fall River County Weather - 2026-09-25 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Fall River County Weather - 2026-09-25 - Afternoon - Sunny
81°F 27°C
Sunny
Early-Evening
Fall River County Weather - 2026-09-25 - Evening - Sunny
71°F 22°C
Sunny
Quite warm around 81°F 27°C, sunny throughout the day, with lower humidity and steady pressure. Winds easing from W 16 mph 26 km/h to NNW 4 mph 7 km/h.

Saturday, September 26, 2026

Mid-Morning
Fall River County Weather - 2026-09-26 - Morning - Overcast
71°F 22°C
Overcast
Mid-Afternoon
Fall River County Weather - 2026-09-26 - Afternoon - Overcast
84°F 29°C
Overcast
Early-Evening
Fall River County Weather - 2026-09-26 - Evening - Sunny
75°F 24°C
Sunny
Warm temperatures up to 84°F 29°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds swinging from the SSW to the SW at 13 mph 21 km/h. Gusts up to 23 mph 37 km/h.

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Weather by the Numbers

Sun, 13th
Fall River County SD Weather - Sunday, Sep 13, 2026 - Cloudy
Hi: 80°F 26°C
Lo: 51°F 11°C
Sunrise 06:31 AM
Sunset 07:07 PM
Wind E 16 mph26 km/h
Dew Point 45°F7°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 7% *
Humidity 44%
Mon, 14th
Fall River County SD Weather - Monday, Sep 14, 2026 - Sunny
Hi: 79°F 26°C
Lo: 55°F 13°C
Sunrise 06:32 AM
Sunset 07:06 PM
Wind W 30 mph48 km/h
Dew Point 42°F6°C
uv Index 6
Barometric Pressure 29.65 in1004 mb
POP 1% *
Humidity 31%
Tue, 15th
Fall River County SD Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 70°F 21°C
Lo: 47°F 8°C
Sunrise 06:33 AM
Sunset 07:04 PM
Wind SSE 12 mph19 km/h
Dew Point 37°F3°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 1% *
Humidity 37%
Wed, 16th
Fall River County SD Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 85°F 30°C
Lo: 53°F 11°C
Sunrise 06:34 AM
Sunset 07:02 PM
Wind SW 7 mph11 km/h
Dew Point 47°F9°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 36%
Thu, 17th
Fall River County SD Weather - Thursday, Sep 17, 2026 - Overcast
Hi: 85°F 29°C
Lo: 60°F 16°C
Sunrise 06:35 AM
Sunset 07:00 PM
Wind SE 9 mph15 km/h
Dew Point 57°F14°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 11% *
Humidity 47%
Fri, 18th
Fall River County SD Weather - Friday, Sep 18, 2026 - Overcast
Hi: 76°F 24°C
Lo: 62°F 16°C
Sunrise 06:37 AM
Sunset 06:58 PM
Wind ENE 5 mph9 km/h
Dew Point 53°F12°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 11% *
Humidity 45%
Sat, 19th
Fall River County SD Weather - Saturday, Sep 19, 2026 - Patchy Rain Nearby
Hi: 71°F 22°C
Lo: 56°F 13°C
Sunrise 06:38 AM
Sunset 06:56 PM
Wind ESE 13 mph22 km/h
Dew Point 54°F12°C
uv Index 4
Barometric Pressure 30.03 in1017 mb
POP 11% *
Humidity 62%
Sun, 20th
Fall River County SD Weather - Sunday, Sep 20, 2026 - Light Rain Shower
Hi: 72°F 22°C
Lo: 54°F 12°C
Sunrise 06:39 AM
Sunset 06:55 PM
Wind SSE 12 mph19 km/h
Dew Point 54°F12°C
uv Index 4
Barometric Pressure 29.91 in1013 mb
POP 64% *
Humidity 73%
Mon, 21st
Fall River County SD Weather - Monday, Sep 21, 2026 - Sunny
Hi: 70°F 21°C
Lo: 51°F 11°C
Sunrise 06:40 AM
Sunset 06:53 PM
Wind ESE 6 mph10 km/h
Dew Point 49°F10°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 4% *
Humidity 56%
Tue, 22nd
Fall River County SD Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 79°F 26°C
Lo: 53°F 12°C
Sunrise 06:41 AM
Sunset 06:51 PM
Wind W 13 mph21 km/h
Dew Point 48°F9°C
uv Index 5
Barometric Pressure 29.85 in1011 mb
POP 10% *
Humidity 42%
Wed, 23rd
Fall River County SD Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 76°F 24°C
Lo: 58°F 15°C
Sunrise 06:42 AM
Sunset 06:49 PM
Wind ESE 8 mph13 km/h
Dew Point 40°F5°C
uv Index 6
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 30%
Thu, 24th
Fall River County SD Weather - Thursday, Sep 24, 2026 - Partly Cloudy
Hi: 82°F 28°C
Lo: 56°F 13°C
Sunrise 06:43 AM
Sunset 06:47 PM
Wind S 15 mph24 km/h
Dew Point 51°F10°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 4% *
Humidity 38%
Fri, 25th
Fall River County SD Weather - Friday, Sep 25, 2026 - Sunny
Hi: 81°F 27°C
Lo: 59°F 15°C
Sunrise 06:45 AM
Sunset 06:45 PM
Wind W 13 mph20 km/h
Dew Point 39°F4°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 0% *
Humidity 25%
Sat, 26th
Fall River County SD Weather - Saturday, Sep 26, 2026 - Overcast
Hi: 84°F 29°C
Lo: 59°F 15°C
Sunrise 06:46 AM
Sunset 06:44 PM
Wind S 20 mph32 km/h
Dew Point 48°F9°C
uv Index 6
Barometric Pressure 29.83 in1010 mb
POP 9% *
Humidity 30%
* POP = Probability of Precipitation. Data for 12:00 PM.