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Alpena SD Weather - Clear - 85°F
Clear
85°F
Updated 5:59 pm
Feels Like 83°F
Humidity 39%
Wind S 15 mph
Barometer  29.84 in
Dew Point 58°F
Alpena SD Weather - Clear - 29°C
Clear
29°C
Updated 5:59 pm
Feels Like 29°C
Humidity 39%
Wind S 24 km/h
Barometer  101 kPa
Dew Point 14°C
Alpena, SD Weather and Current Conditionsalpena sd weather forecast

Alpena, SD Weather Forecast

Alpena South Dakota WeatherAlpena, South Dakota Weather Weather Forecast
14 Day API Alpena, SD Weather Forecast. Note: Our 7 day Alpena, 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.
Alpena, SD Weather Forecast Dated: 559 PM Thu Sep 10 2026
Expect a mild stretch with plenty of sunshine and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.

Thursday, September 10, 2026

Mid-Morning
Alpena Weather - 2026-09-10 - Morning - Sunny
61°F 16°C
Sunny
Mid-Afternoon
Alpena Weather - 2026-09-10 - Afternoon - Sunny
85°F 29°C
Sunny
Early-Evening
Alpena Weather - 2026-09-10 - Evening - Sunny
78°F 25°C
Sunny
Warm and summery near 85°F 29°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the S to the SSE at 12 mph 20 km/h.

Friday, September 11, 2026

Mid-Morning
Alpena Weather - 2026-09-11 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Alpena Weather - 2026-09-11 - Afternoon - Overcast
98°F 36°C
Overcast
Early-Evening
Alpena Weather - 2026-09-11 - Evening - Overcast
87°F 31°C
Overcast
Hot and sweltering around 98°F 36°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds switching from the S to the WNW at 15 mph 25 km/h. Gusts up to 27 mph 44 km/h.

Saturday, September 12, 2026

Mid-Morning
Alpena Weather - 2026-09-12 - Morning - Overcast
57°F 14°C
Overcast
Mid-Afternoon
Alpena Weather - 2026-09-12 - Afternoon - Scattered Showers
66°F 19°C
Scattered Showers
Early-Evening
Alpena Weather - 2026-09-12 - Evening - Scattered Showers
64°F 18°C
Scattered Showers
Comfortable at 66°F 19°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds N at 11 mph 18 km/h.

Sunday, September 13, 2026

Mid-Morning
Alpena Weather - 2026-09-13 - Morning - Overcast
56°F 13°C
Overcast
Mid-Afternoon
Alpena Weather - 2026-09-13 - Afternoon - Light Showers
68°F 20°C
Light Showers
Early-Evening
Alpena Weather - 2026-09-13 - Evening - Scattered Showers
62°F 16°C
Scattered Showers
Mild temperatures up to 68°F 20°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure falling. Winds swinging from the E to the ESE at 14 mph 22 km/h. Gusts up to 25 mph 40 km/h.

Monday, September 14, 2026

Mid-Morning
Alpena Weather - 2026-09-14 - Morning - Scattered Showers
61°F 16°C
Scattered Showers
Mid-Afternoon
Alpena Weather - 2026-09-14 - Afternoon - Cloudy
64°F 18°C
Cloudy
Early-Evening
Alpena Weather - 2026-09-14 - Evening - Overcast
74°F 24°C
Overcast
Refreshing around 64°F 18°C, scattered downpours possible, with lower humidity and steady pressure. Winds shifting from the WNW to the NW at 12 mph 19 km/h. Gusts up to 26 mph 42 km/h.

Tuesday, September 15, 2026

Mid-Morning
Alpena Weather - 2026-09-15 - Morning - Sunny
56°F 13°C
Sunny
Mid-Afternoon
Alpena Weather - 2026-09-15 - Afternoon - Cloudy
65°F 18°C
Cloudy
Early-Evening
Alpena Weather - 2026-09-15 - Evening - Overcast
61°F 16°C
Overcast
Mildly cool near 65°F 18°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds NNW at 11 mph 18 km/h.

Wednesday, September 16, 2026

Mid-Morning
Alpena Weather - 2026-09-16 - Morning - Sunny
58°F 15°C
Sunny
Mid-Afternoon
Alpena Weather - 2026-09-16 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Alpena Weather - 2026-09-16 - Evening - Sunny
70°F 21°C
Sunny
Comfortable with temperatures reaching 72°F 22°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the ESE to the S at 9 mph 14 km/h.

Thursday, September 17, 2026

Mid-Morning
Alpena Weather - 2026-09-17 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Alpena Weather - 2026-09-17 - Afternoon - Sunny
78°F 26°C
Sunny
Early-Evening
Alpena Weather - 2026-09-17 - Evening - Sunny
74°F 24°C
Sunny
Enjoyable around 78°F 26°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds moving from the S to the SSE at 13 mph 21 km/h. Gusts up to 23 mph 36 km/h.

Friday, September 18, 2026

Mid-Morning
Alpena Weather - 2026-09-18 - Morning - Sunny
66°F 19°C
Sunny
Mid-Afternoon
Alpena Weather - 2026-09-18 - Afternoon - Sunny
83°F 28°C
Sunny
Early-Evening
Alpena Weather - 2026-09-18 - Evening - Sunny
80°F 27°C
Sunny
Warm temperatures up to 83°F 28°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds SSE at 7 mph 12 km/h.

Saturday, September 19, 2026

Mid-Morning
Alpena Weather - 2026-09-19 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Alpena Weather - 2026-09-19 - Afternoon - Sunny
83°F 28°C
Sunny
Early-Evening
Alpena Weather - 2026-09-19 - Evening - Sunny
78°F 26°C
Sunny
Very warm with a high of 83°F 28°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds shifting from the SE to the SSE at 11 mph 17 km/h.

Sunday, September 20, 2026

Mid-Morning
Alpena Weather - 2026-09-20 - Morning - Overcast
68°F 20°C
Overcast
Mid-Afternoon
Alpena Weather - 2026-09-20 - Afternoon - Partly Cloudy
82°F 28°C
Partly Cloudy
Early-Evening
Alpena Weather - 2026-09-20 - Evening - Overcast
77°F 25°C
Overcast
Warm and summery near 82°F 28°C, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the S to the SE at 9 mph 14 km/h.

Monday, September 21, 2026

Mid-Morning
Alpena Weather - 2026-09-21 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Alpena Weather - 2026-09-21 - Afternoon - Partly Cloudy
86°F 30°C
Partly Cloudy
Early-Evening
Alpena Weather - 2026-09-21 - Evening - Partly Cloudy
76°F 25°C
Partly Cloudy
Balmy with temperatures reaching 86°F 30°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds switching from the SSE to the NW at 16 mph 25 km/h. Gusts up to 24 mph 40 km/h.

Tuesday, September 22, 2026

Mid-Morning
Alpena Weather - 2026-09-22 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Alpena Weather - 2026-09-22 - Afternoon - Sunny
70°F 21°C
Sunny
Early-Evening
Alpena Weather - 2026-09-22 - Evening - Sunny
67°F 20°C
Sunny
Enjoyable around 70°F 21°C, sunny throughout the day, with steady humidity and steady pressure. Winds out of the WNW at 23 mph 37 km/h. Gusts up to 25 mph 39 km/h.

Wednesday, September 23, 2026

Mid-Morning
Alpena Weather - 2026-09-23 - Morning - Partly Cloudy
49°F 10°C
Partly Cloudy
Mid-Afternoon
Alpena Weather - 2026-09-23 - Afternoon - Sunny
65°F 18°C
Sunny
Early-Evening
Alpena Weather - 2026-09-23 - Evening - Sunny
65°F 18°C
Sunny
Mildly cool near 65°F 18°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds swinging from the ENE to the SE at 8 mph 13 km/h.

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Weather by the Numbers

Thu, 10th
Alpena SD Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 85°F 29°C
Lo: 53°F 12°C
Sunrise 07:07 AM
Sunset 07:53 PM
Wind SSW 16 mph26 km/h
Dew Point 57°F14°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 2% *
Humidity 49%
Fri, 11th
Alpena SD Weather - Friday, Sep 11, 2026 - Overcast
Hi: 98°F 36°C
Lo: 70°F 21°C
Sunrise 07:09 AM
Sunset 07:52 PM
Wind SSW 19 mph31 km/h
Dew Point 45°F7°C
uv Index 5
Barometric Pressure 29.5 in999 mb
POP 9% *
Humidity 21%
Sat, 12th
Alpena SD Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 71°F 21°C
Lo: 56°F 13°C
Sunrise 07:10 AM
Sunset 07:50 PM
Wind N 11 mph17 km/h
Dew Point 38°F3°C
uv Index 4
Barometric Pressure 30.06 in1018 mb
POP 10% *
Humidity 37%
Sun, 13th
Alpena SD Weather - Sunday, Sep 13, 2026 - Patchy Rain Nearby
Hi: 68°F 20°C
Lo: 55°F 13°C
Sunrise 07:11 AM
Sunset 07:48 PM
Wind ESE 12 mph19 km/h
Dew Point 34°F1°C
uv Index 3
Barometric Pressure 30.09 in1019 mb
POP 11% *
Humidity 32%
Mon, 14th
Alpena SD Weather - Monday, Sep 14, 2026 - Patchy Rain Nearby
Hi: 76°F 24°C
Lo: 51°F 11°C
Sunrise 07:12 AM
Sunset 07:46 PM
Wind WSW 7 mph12 km/h
Dew Point 60°F15°C
uv Index 1
Barometric Pressure 29.77 in1008 mb
POP 34% *
Humidity 87%
Tue, 15th
Alpena SD Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 65°F 18°C
Lo: 54°F 12°C
Sunrise 07:13 AM
Sunset 07:44 PM
Wind NNW 12 mph19 km/h
Dew Point 36°F2°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 3% *
Humidity 39%
Wed, 16th
Alpena SD Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 74°F 23°C
Lo: 54°F 12°C
Sunrise 07:14 AM
Sunset 07:42 PM
Wind S 8 mph13 km/h
Dew Point 36°F2°C
uv Index 5
Barometric Pressure 30.3 in1026 mb
POP 1% *
Humidity 33%
Thu, 17th
Alpena SD Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 79°F 26°C
Lo: 59°F 15°C
Sunrise 07:16 AM
Sunset 07:41 PM
Wind S 14 mph23 km/h
Dew Point 47°F8°C
uv Index 6
Barometric Pressure 30.24 in1024 mb
POP 1% *
Humidity 41%
Fri, 18th
Alpena SD Weather - Friday, Sep 18, 2026 - Sunny
Hi: 84°F 29°C
Lo: 62°F 17°C
Sunrise 07:17 AM
Sunset 07:39 PM
Wind S 11 mph17 km/h
Dew Point 54°F12°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 47%
Sat, 19th
Alpena SD Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 84°F 29°C
Lo: 66°F 19°C
Sunrise 07:18 AM
Sunset 07:37 PM
Wind SSE 8 mph13 km/h
Dew Point 53°F12°C
uv Index 6
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 45%
Sun, 20th
Alpena SD Weather - Sunday, Sep 20, 2026 - Partly Cloudy
Hi: 83°F 28°C
Lo: 65°F 19°C
Sunrise 07:19 AM
Sunset 07:35 PM
Wind S 17 mph28 km/h
Dew Point 52°F11°C
uv Index 6
Barometric Pressure 29.85 in1011 mb
POP 5% *
Humidity 43%
Mon, 21st
Alpena SD Weather - Monday, Sep 21, 2026 - Sunny
Hi: 89°F 32°C
Lo: 61°F 16°C
Sunrise 07:20 AM
Sunset 07:33 PM
Wind S 10 mph17 km/h
Dew Point 48°F9°C
uv Index 6
Barometric Pressure 29.74 in1007 mb
POP 2% *
Humidity 39%
Tue, 22nd
Alpena SD Weather - Tuesday, Sep 22, 2026 - Sunny
Hi: 71°F 22°C
Lo: 60°F 16°C
Sunrise 07:21 AM
Sunset 07:31 PM
Wind WNW 23 mph36 km/h
Dew Point 29°F-2°C
uv Index 5
Barometric Pressure 29.83 in1010 mb
POP 0% *
Humidity 24%
Wed, 23rd
Alpena SD Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 67°F 19°C
Lo: 48°F 9°C
Sunrise 07:23 AM
Sunset 07:29 PM
Wind ESE 6 mph9 km/h
Dew Point 37°F3°C
uv Index 4
Barometric Pressure 30.3 in1026 mb
POP 2% *
Humidity 49%
* POP = Probability of Precipitation. Data for 12:00 PM.