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Altamont SD Weather - Partly Cloudy - 66°F
Partly Cloudy
66°F
Updated 8:20 pm
Feels Like 70°F
Humidity 62%
Wind W 3 mph
Barometer  30.05 in
Dew Point 53°F
Altamont SD Weather - Partly Cloudy - 19°C
Partly Cloudy
19°C
Updated 8:20 pm
Feels Like 21°C
Humidity 62%
Wind W 5 km/h
Barometer  101.7 kPa
Dew Point 12°C
Altamont, SD Weather and Current Conditionsaltamont sd weather forecast

Altamont, SD Weather Forecast

Altamont South Dakota WeatherAltamont, South Dakota Weather Weather Forecast
14 day API Altamont, SD weather forecast. Note. Our 7-day weather forecast for Altamont, 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.
Altamont, SD Weather Forecast Dated: 820 PM Wed Sep 09 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.

Wednesday, September 9, 2026

Mid-Morning
Altamont Weather - 2026-09-09 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Altamont Weather - 2026-09-09 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
Altamont Weather - 2026-09-09 - Evening - Sunny
74°F 23°C
Sunny
Pleasant near 75°F 24°C, sunny throughout the day, with lower humidity and steady pressure. Winds out of the WNW at 15 mph 23 km/h.

Thursday, September 10, 2026

Mid-Morning
Altamont Weather - 2026-09-10 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Altamont Weather - 2026-09-10 - Afternoon - Sunny
82°F 28°C
Sunny
Early-Evening
Altamont Weather - 2026-09-10 - Evening - Sunny
78°F 26°C
Sunny
Balmy with temperatures reaching 82°F 28°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds building from SW at 7 mph 12 km/h to S at 17 mph 27 km/h. Gusts up to 31 mph 49 km/h.

Friday, September 11, 2026

Mid-Morning
Altamont Weather - 2026-09-11 - Morning - Overcast
70°F 21°C
Overcast
Mid-Afternoon
Altamont Weather - 2026-09-11 - Afternoon - Overcast
91°F 33°C
Overcast
Early-Evening
Altamont Weather - 2026-09-11 - Evening - Sunny
81°F 27°C
Sunny
Sizzling hot with 91°F 33°C, overcast through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds moving from the SSW to the N at 23 mph 37 km/h. Gusts up to 36 mph 57 km/h.

Saturday, September 12, 2026

Mid-Morning
Altamont Weather - 2026-09-12 - Morning - Overcast
54°F 12°C
Overcast
Mid-Afternoon
Altamont Weather - 2026-09-12 - Afternoon - Overcast
69°F 21°C
Overcast
Early-Evening
Altamont Weather - 2026-09-12 - Evening - Overcast
67°F 19°C
Overcast
Mild temperatures up to 69°F 21°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds swinging from the N to the WNW at 5 mph 9 km/h.

Sunday, September 13, 2026

Mid-Morning
Altamont Weather - 2026-09-13 - Morning - Overcast
52°F 11°C
Overcast
Mid-Afternoon
Altamont Weather - 2026-09-13 - Afternoon - Overcast
65°F 18°C
Overcast
Early-Evening
Altamont Weather - 2026-09-13 - Evening - Scattered Showers
51°F 11°C
Scattered Showers
Refreshing around 65°F 18°C, scattered downpours possible, with increasing humidity and barometric pressure falling. Winds blowing from the E at 13 mph 22 km/h. Gusts up to 27 mph 43 km/h.

Monday, September 14, 2026

Mid-Morning
Altamont Weather - 2026-09-14 - Morning - Fog
51°F 11°C
Fog
Mid-Afternoon
Altamont Weather - 2026-09-14 - Afternoon - Scattered Showers
57°F 14°C
Scattered Showers
Early-Evening
Altamont Weather - 2026-09-14 - Evening - Overcast
54°F 12°C
Overcast
Cool and brisk at 57°F 14°C, locally heavy downpours at times, with lower humidity and barometric pressure rising. Winds turning from the SW to the NW at 13 mph 21 km/h. Gusts up to 21 mph 34 km/h.

Tuesday, September 15, 2026

Mid-Morning
Altamont Weather - 2026-09-15 - Morning - Sunny
51°F 10°C
Sunny
Mid-Afternoon
Altamont Weather - 2026-09-15 - Afternoon - Overcast
63°F 17°C
Overcast
Early-Evening
Altamont Weather - 2026-09-15 - Evening - Cloudy
62°F 17°C
Cloudy
Comfortable at 63°F 17°C, partly cloudy in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure.

Wednesday, September 16, 2026

Mid-Morning
Altamont Weather - 2026-09-16 - Morning - Overcast
57°F 14°C
Overcast
Mid-Afternoon
Altamont Weather - 2026-09-16 - Afternoon - Overcast
60°F 16°C
Overcast
Early-Evening
Altamont Weather - 2026-09-16 - Evening - Light Showers
60°F 16°C
Light Showers
Cool with a high near 60°F 16°C, mainly dry until evening showers arrive, with increasing humidity and steady pressure. Winds switching from the ESE to the SE at 8 mph 13 km/h. Gusts up to 21 mph 33 km/h.

Thursday, September 17, 2026

Mid-Morning
Altamont Weather - 2026-09-17 - Morning - Scattered Showers
54°F 12°C
Scattered Showers
Mid-Afternoon
Altamont Weather - 2026-09-17 - Afternoon - Cloudy
70°F 21°C
Cloudy
Early-Evening
Altamont Weather - 2026-09-17 - Evening - Partly Cloudy
69°F 21°C
Partly Cloudy
Mild temperatures up to 70°F 21°C, locally heavy downpours at times, with lower humidity and steady pressure.

Friday, September 18, 2026

Mid-Morning
Altamont Weather - 2026-09-18 - Morning - Sunny
67°F 20°C
Sunny
Mid-Afternoon
Altamont Weather - 2026-09-18 - Afternoon - Overcast
80°F 27°C
Overcast
Early-Evening
Altamont Weather - 2026-09-18 - Evening - Overcast
77°F 25°C
Overcast
Very warm with a high of 80°F 27°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds moving from the SSW to the SW at 16 mph 26 km/h. Gusts up to 28 mph 45 km/h.

Saturday, September 19, 2026

Mid-Morning
Altamont Weather - 2026-09-19 - Morning - Partly Cloudy
62°F 17°C
Partly Cloudy
Mid-Afternoon
Altamont Weather - 2026-09-19 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
Altamont Weather - 2026-09-19 - Evening - Sunny
74°F 24°C
Sunny
Pleasant near 75°F 24°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds decreasing from N 17 mph 28 km/h to NNE 7 mph 11 km/h.

Sunday, September 20, 2026

Mid-Morning
Altamont Weather - 2026-09-20 - Morning - Light Showers
63°F 17°C
Light Showers
Mid-Afternoon
Altamont Weather - 2026-09-20 - Afternoon - Scattered Showers
60°F 15°C
Scattered Showers
Early-Evening
Altamont Weather - 2026-09-20 - Evening - Scattered Showers
61°F 16°C
Scattered Showers
Cool with a high near 60°F 15°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds out of the ENE at 8 mph 13 km/h.

Monday, September 21, 2026

Mid-Morning
Altamont Weather - 2026-09-21 - Morning - Light Showers
55°F 13°C
Light Showers
Mid-Afternoon
Altamont Weather - 2026-09-21 - Afternoon - Light Showers
59°F 15°C
Light Showers
Early-Evening
Altamont Weather - 2026-09-21 - Evening - Light Showers
59°F 15°C
Light Showers
Refreshing around 59°F 15°C, rounds of showers expected off and on all day, with steady humidity and steady pressure.

Tuesday, September 22, 2026

Mid-Morning
Altamont Weather - 2026-09-22 - Morning - Overcast
54°F 12°C
Overcast
Mid-Afternoon
Altamont Weather - 2026-09-22 - Afternoon - Scattered Showers
60°F 16°C
Scattered Showers
Early-Evening
Altamont Weather - 2026-09-22 - Evening - Scattered Showers
65°F 19°C
Scattered Showers
Mildly cool near 60°F 16°C, scattered downpours possible, with lower humidity and steady pressure. Winds turning from the NNW to the W at 9 mph 14 km/h.

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Weather by the Numbers

Wed, 9th
Altamont SD Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 77°F 25°C
Lo: 59°F 15°C
Sunrise 06:59 AM
Sunset 07:49 PM
Wind WNW 17 mph27 km/h
Dew Point 54°F12°C
uv Index 5
Barometric Pressure 30.03 in1017 mb
POP 3% *
Humidity 55%
Thu, 10th
Altamont SD Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 82°F 28°C
Lo: 63°F 17°C
Sunrise 07:00 AM
Sunset 07:47 PM
Wind SSW 14 mph22 km/h
Dew Point 38°F3°C
uv Index 5
Barometric Pressure 29.91 in1013 mb
POP 0% *
Humidity 23%
Fri, 11th
Altamont SD Weather - Friday, Sep 11, 2026 - Overcast
Hi: 95°F 35°C
Lo: 62°F 17°C
Sunrise 07:01 AM
Sunset 07:45 PM
Wind SSW 26 mph42 km/h
Dew Point 57°F14°C
uv Index 5
Barometric Pressure 29.56 in1001 mb
POP 10% *
Humidity 41%
Sat, 12th
Altamont SD Weather - Saturday, Sep 12, 2026 - Cloudy
Hi: 70°F 21°C
Lo: 50°F 10°C
Sunrise 07:02 AM
Sunset 07:44 PM
Wind N 9 mph15 km/h
Dew Point 35°F1°C
uv Index 4
Barometric Pressure 30 in1016 mb
POP 8% *
Humidity 35%
Sun, 13th
Altamont SD Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 65°F 18°C
Lo: 49°F 9°C
Sunrise 07:04 AM
Sunset 07:42 PM
Wind E 13 mph21 km/h
Dew Point 31°F-0°C
uv Index 4
Barometric Pressure 30.06 in1018 mb
POP 10% *
Humidity 35%
Mon, 14th
Altamont SD Weather - Monday, Sep 14, 2026 - Patchy Rain Nearby
Hi: 59°F 15°C
Lo: 49°F 9°C
Sunrise 07:05 AM
Sunset 07:40 PM
Wind WNW 16 mph25 km/h
Dew Point 49°F9°C
uv Index 3
Barometric Pressure 29.85 in1011 mb
POP 27% *
Humidity 76%
Tue, 15th
Altamont SD Weather - Tuesday, Sep 15, 2026 - Partly Cloudy
Hi: 64°F 18°C
Lo: 49°F 9°C
Sunrise 07:06 AM
Sunset 07:38 PM
Wind SE 2 mph4 km/h
Dew Point 37°F3°C
uv Index 4
Barometric Pressure 30.24 in1024 mb
POP 8% *
Humidity 48%
Wed, 16th
Altamont SD Weather - Wednesday, Sep 16, 2026 - Overcast
Hi: 62°F 17°C
Lo: 56°F 14°C
Sunrise 07:07 AM
Sunset 07:36 PM
Wind ESE 12 mph19 km/h
Dew Point 42°F5°C
uv Index 4
Barometric Pressure 30.24 in1024 mb
POP 12% *
Humidity 50%
Thu, 17th
Altamont SD Weather - Thursday, Sep 17, 2026 - Patchy Rain Nearby
Hi: 71°F 22°C
Lo: 51°F 11°C
Sunrise 07:09 AM
Sunset 07:34 PM
Wind ESE 7 mph12 km/h
Dew Point 52°F11°C
uv Index 4
Barometric Pressure 30.27 in1025 mb
POP 14% *
Humidity 69%
Fri, 18th
Altamont SD Weather - Friday, Sep 18, 2026 - Cloudy
Hi: 81°F 27°C
Lo: 66°F 19°C
Sunrise 07:10 AM
Sunset 07:32 PM
Wind SSW 15 mph23 km/h
Dew Point 58°F15°C
uv Index 5
Barometric Pressure 29.97 in1015 mb
POP 12% *
Humidity 59%
Sat, 19th
Altamont SD Weather - Saturday, Sep 19, 2026 - Partly Cloudy
Hi: 77°F 25°C
Lo: 58°F 15°C
Sunrise 07:11 AM
Sunset 07:30 PM
Wind SE 16 mph26 km/h
Dew Point 55°F13°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 4% *
Humidity 59%
Sun, 20th
Altamont SD Weather - Sunday, Sep 20, 2026 - Light Rain Shower
Hi: 69°F 21°C
Lo: 58°F 15°C
Sunrise 07:12 AM
Sunset 07:28 PM
Wind NE 6 mph10 km/h
Dew Point 57°F14°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 53% *
Humidity 94%
Mon, 21st
Altamont SD Weather - Monday, Sep 21, 2026 - Light Rain Shower
Hi: 60°F 16°C
Lo: 55°F 13°C
Sunrise 07:13 AM
Sunset 07:26 PM
Wind ESE 4 mph6 km/h
Dew Point 56°F13°C
uv Index 3
Barometric Pressure 30 in1016 mb
POP 61% *
Humidity 97%
Tue, 22nd
Altamont SD Weather - Tuesday, Sep 22, 2026 - Patchy Rain Nearby
Hi: 67°F 20°C
Lo: 53°F 12°C
Sunrise 07:15 AM
Sunset 07:25 PM
Wind NNW 6 mph10 km/h
Dew Point 52°F11°C
uv Index 3
Barometric Pressure 29.91 in1013 mb
POP 27% *
Humidity 87%
* POP = Probability of Precipitation. Data for 12:00 PM.