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Foster SD Weather - Mostly Clear - 74°F
Mostly Clear
74°F
Updated 10:06 pm
Feels Like 76°F
Humidity 90%
Wind WNW 6 mph
Barometer  29.77 in
Dew Point 71°F
Foster SD Weather - Mostly Clear - 23°C
Mostly Clear
23°C
Updated 10:06 pm
Feels Like 25°C
Humidity 90%
Wind WNW 10 km/h
Barometer  100.8 kPa
Dew Point 22°C
Foster, SD Weather and Current Conditionsfoster sd weather forecast

Foster, SD Weather Forecast

Foster South Dakota WeatherFoster, South Dakota Weather Weather Forecast
Here is the API 14 day weather forecast for Foster, South Dakota. Note: The 7-day weather forecast for Foster, 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.
Foster, SD Weather Forecast Dated: 1006 PM Mon Sep 07 2026
Expect a mild stretch with a mix of sun and clouds and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.

Monday, September 7, 2026

Mid-Morning
Foster Weather - 2026-09-07 - Morning - Light Rain
70°F 21°C
Light Rain
Mid-Afternoon
Foster Weather - 2026-09-07 - Afternoon - Overcast
79°F 26°C
Overcast
Early-Evening
Foster Weather - 2026-09-07 - Evening - Sunny
78°F 26°C
Sunny
Pleasant near 79°F 26°C, early showers breaking for a drier afternoon, with lower humidity and barometric pressure falling. Winds turning from the SE to the S at 9 mph 14 km/h.

Tuesday, September 8, 2026

Mid-Morning
Foster Weather - 2026-09-08 - Morning - Overcast
66°F 19°C
Overcast
Mid-Afternoon
Foster Weather - 2026-09-08 - Afternoon - Sunny
82°F 28°C
Sunny
Early-Evening
Foster Weather - 2026-09-08 - Evening - Sunny
79°F 26°C
Sunny
Balmy with temperatures reaching 82°F 28°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds blowing from the WNW at 18 mph 29 km/h.

Wednesday, September 9, 2026

Mid-Morning
Foster Weather - 2026-09-09 - Morning - Sunny
60°F 15°C
Sunny
Mid-Afternoon
Foster Weather - 2026-09-09 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Foster Weather - 2026-09-09 - Evening - Sunny
77°F 25°C
Sunny
Enjoyable around 77°F 25°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds moving from the WNW to the NW at 10 mph 15 km/h.

Thursday, September 10, 2026

Mid-Morning
Foster Weather - 2026-09-10 - Morning - Partly Cloudy
63°F 17°C
Partly Cloudy
Mid-Afternoon
Foster Weather - 2026-09-10 - Afternoon - Sunny
85°F 29°C
Sunny
Early-Evening
Foster Weather - 2026-09-10 - Evening - Sunny
85°F 29°C
Sunny
Warm temperatures up to 85°F 29°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds swinging from the SSW to the S at 9 mph 13 km/h.

Friday, September 11, 2026

Mid-Morning
Foster Weather - 2026-09-11 - Morning - Sunny
61°F 16°C
Sunny
Mid-Afternoon
Foster Weather - 2026-09-11 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
Foster Weather - 2026-09-11 - Evening - Sunny
60°F 16°C
Sunny
Mild with a high of 75°F 24°C, sunny throughout the day, with steady humidity and steady pressure. Winds shifting from the N to the NNW at 14 mph 22 km/h. Gusts up to 22 mph 36 km/h.

Saturday, September 12, 2026

Mid-Morning
Foster Weather - 2026-09-12 - Morning - Cloudy
50°F 10°C
Cloudy
Mid-Afternoon
Foster Weather - 2026-09-12 - Afternoon - Partly Cloudy
66°F 19°C
Partly Cloudy
Early-Evening
Foster Weather - 2026-09-12 - Evening - Overcast
66°F 19°C
Overcast
Mildly cool near 66°F 19°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling. Winds turning from the W to the ESE at 5 mph 9 km/h.

Sunday, September 13, 2026

Mid-Morning
Foster Weather - 2026-09-13 - Morning - Scattered Showers
55°F 13°C
Scattered Showers
Mid-Afternoon
Foster Weather - 2026-09-13 - Afternoon - Scattered Showers
56°F 13°C
Scattered Showers
Early-Evening
Foster Weather - 2026-09-13 - Evening - Overcast
52°F 12°C
Overcast
Chilly near 56°F 13°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds out of the E at 15 mph 23 km/h. Gusts up to 26 mph 41 km/h.

Monday, September 14, 2026

Mid-Morning
Foster Weather - 2026-09-14 - Morning - Light Showers
53°F 12°C
Light Showers
Mid-Afternoon
Foster Weather - 2026-09-14 - Afternoon - Scattered Showers
60°F 16°C
Scattered Showers
Early-Evening
Foster Weather - 2026-09-14 - Evening - Scattered Showers
58°F 15°C
Scattered Showers
Cool with a high near 60°F 16°C, scattered downpours possible, with lower humidity and steady pressure. Winds building from SW at 4 mph 7 km/h to NW at 14 mph 22 km/h. Gusts up to 20 mph 32 km/h.

Tuesday, September 15, 2026

Mid-Morning
Foster Weather - 2026-09-15 - Morning - Partly Cloudy
50°F 10°C
Partly Cloudy
Mid-Afternoon
Foster Weather - 2026-09-15 - Afternoon - Sunny
64°F 18°C
Sunny
Early-Evening
Foster Weather - 2026-09-15 - Evening - Sunny
62°F 17°C
Sunny
Refreshing around 64°F 18°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds swinging from the WNW to the ESE at 11 mph 18 km/h.

Wednesday, September 16, 2026

Mid-Morning
Foster Weather - 2026-09-16 - Morning - Sunny
49°F 9°C
Sunny
Mid-Afternoon
Foster Weather - 2026-09-16 - Afternoon - Sunny
58°F 15°C
Sunny
Early-Evening
Foster Weather - 2026-09-16 - Evening - Sunny
70°F 21°C
Sunny
Mildly cool near 58°F 15°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds shifting from the NNW to the SE at 7 mph 11 km/h.

Thursday, September 17, 2026

Mid-Morning
Foster Weather - 2026-09-17 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Foster Weather - 2026-09-17 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Foster Weather - 2026-09-17 - Evening - Sunny
76°F 24°C
Sunny
Pleasant near 79°F 26°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the E to the ESE at 12 mph 19 km/h. Gusts up to 22 mph 36 km/h.

Friday, September 18, 2026

Mid-Morning
Foster Weather - 2026-09-18 - Morning - Scattered Showers
64°F 18°C
Scattered Showers
Mid-Afternoon
Foster Weather - 2026-09-18 - Afternoon - Cloudy
81°F 27°C
Cloudy
Early-Evening
Foster Weather - 2026-09-18 - Evening - Sunny
73°F 23°C
Sunny
Balmy with temperatures reaching 81°F 27°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds increasing from the NNW at 3 mph 5 km/h to SE at 16 mph 25 km/h. Gusts up to 24 mph 39 km/h.

Saturday, September 19, 2026

Mid-Morning
Foster Weather - 2026-09-19 - Morning - Sunny
51°F 11°C
Sunny
Mid-Afternoon
Foster Weather - 2026-09-19 - Afternoon - Overcast
55°F 13°C
Overcast
Early-Evening
Foster Weather - 2026-09-19 - Evening - Overcast
57°F 14°C
Overcast
Brisk around 55°F 13°C, cloudy in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and barometric pressure rising. Winds moving from the N to the NNE at 10 mph 16 km/h.

Sunday, September 20, 2026

Mid-Morning
Foster Weather - 2026-09-20 - Morning - Sunny
46°F 8°C
Sunny
Mid-Afternoon
Foster Weather - 2026-09-20 - Afternoon - Partly Cloudy
65°F 18°C
Partly Cloudy
Early-Evening
Foster Weather - 2026-09-20 - Evening - Sunny
68°F 20°C
Sunny
Mildly cool near 65°F 18°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds blowing from the SSE at 19 mph 30 km/h. Gusts up to 31 mph 49 km/h.

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Weather by the Numbers

Mon, 7th
Foster SD Weather - Monday, Sep 7, 2026 - Partly Cloudy
Hi: 81°F 27°C
Lo: 67°F 19°C
Sunrise 07:11 AM
Sunset 08:08 PM
Wind S 19 mph31 km/h
Dew Point 71°F22°C
uv Index 4
Barometric Pressure 29.68 in1005 mb
POP 13% *
Humidity 83%
Tue, 8th
Foster SD Weather - Tuesday, Sep 8, 2026 - Sunny
Hi: 82°F 28°C
Lo: 63°F 17°C
Sunrise 07:12 AM
Sunset 08:06 PM
Wind WNW 17 mph28 km/h
Dew Point 37°F3°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 25%
Wed, 9th
Foster SD Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 79°F 26°C
Lo: 57°F 14°C
Sunrise 07:13 AM
Sunset 08:04 PM
Wind WNW 15 mph25 km/h
Dew Point 40°F4°C
uv Index 5
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 31%
Thu, 10th
Foster SD Weather - Thursday, Sep 10, 2026 - Overcast
Hi: 89°F 32°C
Lo: 63°F 17°C
Sunrise 07:14 AM
Sunset 08:02 PM
Wind SW 8 mph12 km/h
Dew Point 32°F-0°C
uv Index 5
Barometric Pressure 29.83 in1010 mb
POP 9% *
Humidity 20%
Fri, 11th
Foster SD Weather - Friday, Sep 11, 2026 - Partly Cloudy
Hi: 79°F 26°C
Lo: 55°F 13°C
Sunrise 07:16 AM
Sunset 08:00 PM
Wind N 19 mph30 km/h
Dew Point 34°F1°C
uv Index 5
Barometric Pressure 29.85 in1011 mb
POP 2% *
Humidity 27%
Sat, 12th
Foster SD Weather - Saturday, Sep 12, 2026 - Partly Cloudy
Hi: 67°F 20°C
Lo: 50°F 10°C
Sunrise 07:17 AM
Sunset 07:58 PM
Wind WNW 4 mph6 km/h
Dew Point 31°F-0°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 2% *
Humidity 34%
Sun, 13th
Foster SD Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 65°F 18°C
Lo: 51°F 10°C
Sunrise 07:18 AM
Sunset 07:56 PM
Wind E 15 mph25 km/h
Dew Point 37°F3°C
uv Index 3
Barometric Pressure 29.97 in1015 mb
POP 12% *
Humidity 51%
Mon, 14th
Foster SD Weather - Monday, Sep 14, 2026 - Patchy Rain Nearby
Hi: 63°F 17°C
Lo: 51°F 11°C
Sunrise 07:19 AM
Sunset 07:55 PM
Wind NW 9 mph14 km/h
Dew Point 50°F10°C
uv Index 3
Barometric Pressure 29.97 in1015 mb
POP 27% *
Humidity 85%
Tue, 15th
Foster SD Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 66°F 19°C
Lo: 47°F 8°C
Sunrise 07:21 AM
Sunset 07:53 PM
Wind NW 12 mph19 km/h
Dew Point 36°F2°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 1% *
Humidity 46%
Wed, 16th
Foster SD Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 73°F 23°C
Lo: 46°F 8°C
Sunrise 07:22 AM
Sunset 07:51 PM
Wind NNW 8 mph13 km/h
Dew Point 29°F-2°C
uv Index 4
Barometric Pressure 30.42 in1030 mb
POP 1% *
Humidity 39%
Thu, 17th
Foster SD Weather - Thursday, Sep 17, 2026 - Overcast
Hi: 80°F 27°C
Lo: 60°F 16°C
Sunrise 07:23 AM
Sunset 07:49 PM
Wind ESE 9 mph14 km/h
Dew Point 36°F2°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 2% *
Humidity 28%
Fri, 18th
Foster SD Weather - Friday, Sep 18, 2026 - Light Rain Shower
Hi: 83°F 28°C
Lo: 63°F 17°C
Sunrise 07:24 AM
Sunset 07:47 PM
Wind SE 5 mph9 km/h
Dew Point 50°F10°C
uv Index 5
Barometric Pressure 29.8 in1009 mb
POP 17% *
Humidity 47%
Sat, 19th
Foster SD Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 62°F 16°C
Lo: 50°F 10°C
Sunrise 07:25 AM
Sunset 07:45 PM
Wind SW 14 mph23 km/h
Dew Point 28°F-2°C
uv Index 3
Barometric Pressure 30.27 in1025 mb
POP 10% *
Humidity 41%
Sun, 20th
Foster SD Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 69°F 21°C
Lo: 43°F 6°C
Sunrise 07:27 AM
Sunset 07:43 PM
Wind SSE 18 mph30 km/h
Dew Point 28°F-3°C
uv Index 4
Barometric Pressure 30.27 in1025 mb
POP 3% *
Humidity 35%
* POP = Probability of Precipitation. Data for 12:00 PM.