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Allen SD Weather - Clear - 74°F
Clear
74°F
Updated 12:44 pm
Feels Like 65°F
Humidity 33%
Wind ESE 3 mph
Barometer  30.27 in
Dew Point 44°F
Allen SD Weather - Clear - 23°C
Clear
23°C
Updated 12:44 pm
Feels Like 19°C
Humidity 33%
Wind ESE 5 km/h
Barometer  102.5 kPa
Dew Point 6°C
Allen, SD Weather and Current Conditionsallen sd weather forecast

Allen, SD Weather Forecast

Allen South Dakota WeatherAllen, South Dakota Weather Weather Forecast
14 day API Allen, SD weather forecast. Note. Our 7-day weather forecast for Allen, 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.
Allen, SD Weather Forecast Dated: 1244 PM Wed Sep 09 2026
Expect a very warm period 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
Allen Weather - 2026-09-09 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Allen Weather - 2026-09-09 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Allen Weather - 2026-09-09 - Evening - Sunny
72°F 22°C
Sunny
Pleasant near 79°F 26°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds turning from the N to the SE at 8 mph 12 km/h.

Thursday, September 10, 2026

Mid-Morning
Allen Weather - 2026-09-10 - Morning - Sunny
75°F 24°C
Sunny
Mid-Afternoon
Allen Weather - 2026-09-10 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
Allen Weather - 2026-09-10 - Evening - Sunny
81°F 27°C
Sunny
Hot and sweltering around 91°F 33°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds switching from the WSW to the SSW at 9 mph 14 km/h.

Friday, September 11, 2026

Mid-Morning
Allen Weather - 2026-09-11 - Morning - Partly Cloudy
81°F 27°C
Partly Cloudy
Mid-Afternoon
Allen Weather - 2026-09-11 - Afternoon - Sunny
93°F 34°C
Sunny
Early-Evening
Allen Weather - 2026-09-11 - Evening - Sunny
77°F 25°C
Sunny
Sizzling hot with 93°F 34°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with increasing humidity and barometric pressure rising. Winds moving from the WSW to the N at 21 mph 33 km/h. Gusts up to 26 mph 41 km/h.

Saturday, September 12, 2026

Mid-Morning
Allen Weather - 2026-09-12 - Morning - Overcast
58°F 15°C
Overcast
Mid-Afternoon
Allen Weather - 2026-09-12 - Afternoon - Cloudy
66°F 19°C
Cloudy
Early-Evening
Allen Weather - 2026-09-12 - Evening - Overcast
65°F 18°C
Overcast
Cool with a high near 66°F 19°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds swinging from the NE to the E at 15 mph 23 km/h. Gusts up to 21 mph 34 km/h.

Sunday, September 13, 2026

Mid-Morning
Allen Weather - 2026-09-13 - Morning - Light Showers
60°F 16°C
Light Showers
Mid-Afternoon
Allen Weather - 2026-09-13 - Afternoon - Nearby Thunderstorms
80°F 27°C
Nearby Thunderstorms
Early-Evening
Allen Weather - 2026-09-13 - Evening - Light Showers
64°F 18°C
Light Showers
Very warm with a high of 80°F 27°C, scattered downpours possible, with steady humidity and barometric pressure falling. Winds shifting from the SE to the SSE at 19 mph 31 km/h. Gusts up to 29 mph 47 km/h.

Monday, September 14, 2026

Mid-Morning
Allen Weather - 2026-09-14 - Morning - Sunny
52°F 11°C
Sunny
Mid-Afternoon
Allen Weather - 2026-09-14 - Afternoon - Sunny
66°F 19°C
Sunny
Early-Evening
Allen Weather - 2026-09-14 - Evening - Sunny
59°F 15°C
Sunny
Mildly cool near 66°F 19°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds decreasing from NNW 17 mph 27 km/h to ENE 9 mph 15 km/h.

Tuesday, September 15, 2026

Mid-Morning
Allen Weather - 2026-09-15 - Morning - Scattered Showers
58°F 14°C
Scattered Showers
Mid-Afternoon
Allen Weather - 2026-09-15 - Afternoon - Partly Cloudy
75°F 24°C
Partly Cloudy
Early-Evening
Allen Weather - 2026-09-15 - Evening - Sunny
66°F 19°C
Sunny
Comfortable with temperatures reaching 75°F 24°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds switching from the SE to the SSE at 19 mph 30 km/h. Gusts up to 26 mph 41 km/h.

Wednesday, September 16, 2026

Mid-Morning
Allen Weather - 2026-09-16 - Morning - Scattered Showers
69°F 21°C
Scattered Showers
Mid-Afternoon
Allen Weather - 2026-09-16 - Afternoon - Sunny
85°F 29°C
Sunny
Early-Evening
Allen Weather - 2026-09-16 - Evening - Scattered Showers
71°F 22°C
Scattered Showers
Quite warm around 85°F 29°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the S to the ENE at 11 mph 17 km/h.

Thursday, September 17, 2026

Mid-Morning
Allen Weather - 2026-09-17 - Morning - Scattered Showers
63°F 17°C
Scattered Showers
Mid-Afternoon
Allen Weather - 2026-09-17 - Afternoon - Partly Cloudy
78°F 26°C
Partly Cloudy
Early-Evening
Allen Weather - 2026-09-17 - Evening - Sunny
73°F 23°C
Sunny
Mild temperatures up to 78°F 26°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds swinging from the ESE to the SSE at 12 mph 19 km/h.

Friday, September 18, 2026

Mid-Morning
Allen Weather - 2026-09-18 - Morning - Sunny
76°F 24°C
Sunny
Mid-Afternoon
Allen Weather - 2026-09-18 - Afternoon - Sunny
96°F 35°C
Sunny
Early-Evening
Allen Weather - 2026-09-18 - Evening - Sunny
82°F 28°C
Sunny
Very hot with a high of 96°F 35°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds shifting from the SSW to the N at 13 mph 21 km/h. Gusts up to 24 mph 39 km/h.

Saturday, September 19, 2026

Mid-Morning
Allen Weather - 2026-09-19 - Morning - Sunny
70°F 21°C
Sunny
Mid-Afternoon
Allen Weather - 2026-09-19 - Afternoon - Sunny
85°F 29°C
Sunny
Early-Evening
Allen Weather - 2026-09-19 - Evening - Sunny
75°F 24°C
Sunny
Warm and summery near 85°F 29°C, sunny through the afternoon, turning cloudy this evening, with increasing humidity and barometric pressure falling. Winds turning from the E to the SE at 10 mph 17 km/h.

Sunday, September 20, 2026

Mid-Morning
Allen Weather - 2026-09-20 - Morning - Overcast
73°F 23°C
Overcast
Mid-Afternoon
Allen Weather - 2026-09-20 - Afternoon - Nearby Thunderstorms
80°F 27°C
Nearby Thunderstorms
Early-Evening
Allen Weather - 2026-09-20 - Evening - Light Showers
65°F 18°C
Light Showers
Balmy with temperatures reaching 80°F 27°C, heavy thunderstorms conditions at times, with increasing humidity and barometric pressure rising. Winds increasing from the WSW at 7 mph 12 km/h to NNW at 18 mph 30 km/h. Gusts up to 28 mph 45 km/h.

Monday, September 21, 2026

Mid-Morning
Allen Weather - 2026-09-21 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Allen Weather - 2026-09-21 - Afternoon - Overcast
66°F 19°C
Overcast
Early-Evening
Allen Weather - 2026-09-21 - Evening - Sunny
61°F 16°C
Sunny
Refreshing around 66°F 19°C, partly cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds moving from the NW to the NNE at 9 mph 14 km/h.

Tuesday, September 22, 2026

Mid-Morning
Allen Weather - 2026-09-22 - Morning - Partly Cloudy
60°F 16°C
Partly Cloudy
Mid-Afternoon
Allen Weather - 2026-09-22 - Afternoon - Sunny
78°F 26°C
Sunny
Early-Evening
Allen Weather - 2026-09-22 - Evening - Sunny
70°F 21°C
Sunny
Mild temperatures up to 78°F 26°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds swinging from the WNW to the NW at 6 mph 9 km/h.

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Weather by the Numbers

Wed, 9th
Allen SD Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 79°F 26°C
Lo: 59°F 15°C
Sunrise 06:20 AM
Sunset 07:08 PM
Wind NNW 9 mph15 km/h
Dew Point 43°F6°C
uv Index 6
Barometric Pressure 30.12 in1020 mb
POP 1% *
Humidity 35%
Thu, 10th
Allen SD Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 91°F 33°C
Lo: 60°F 15°C
Sunrise 06:21 AM
Sunset 07:06 PM
Wind WSW 7 mph11 km/h
Dew Point 28°F-2°C
uv Index 6
Barometric Pressure 29.83 in1010 mb
POP 0% *
Humidity 12%
Fri, 11th
Allen SD Weather - Friday, Sep 11, 2026 - Partly Cloudy
Hi: 93°F 34°C
Lo: 62°F 17°C
Sunrise 06:22 AM
Sunset 07:04 PM
Wind W 24 mph38 km/h
Dew Point 28°F-2°C
uv Index 6
Barometric Pressure 29.59 in1002 mb
POP 2% *
Humidity 11%
Sat, 12th
Allen SD Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 70°F 21°C
Lo: 53°F 12°C
Sunrise 06:23 AM
Sunset 07:02 PM
Wind NE 9 mph15 km/h
Dew Point 46°F8°C
uv Index 5
Barometric Pressure 30.09 in1019 mb
POP 15% *
Humidity 61%
Sun, 13th
Allen SD Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 82°F 28°C
Lo: 56°F 13°C
Sunrise 06:24 AM
Sunset 07:00 PM
Wind SSE 20 mph32 km/h
Dew Point 59°F15°C
uv Index 4
Barometric Pressure 29.77 in1008 mb
POP 24% *
Humidity 81%
Mon, 14th
Allen SD Weather - Monday, Sep 14, 2026 - Sunny
Hi: 66°F 19°C
Lo: 48°F 9°C
Sunrise 06:25 AM
Sunset 06:58 PM
Wind NNW 14 mph22 km/h
Dew Point 36°F2°C
uv Index 5
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 39%
Tue, 15th
Allen SD Weather - Tuesday, Sep 15, 2026 - Patchy Rain Nearby
Hi: 75°F 24°C
Lo: 49°F 10°C
Sunrise 06:26 AM
Sunset 06:57 PM
Wind SSE 22 mph36 km/h
Dew Point 44°F7°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 9% *
Humidity 42%
Wed, 16th
Allen SD Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 85°F 29°C
Lo: 59°F 15°C
Sunrise 06:28 AM
Sunset 06:55 PM
Wind S 8 mph13 km/h
Dew Point 60°F16°C
uv Index 7
Barometric Pressure 29.97 in1015 mb
POP 2% *
Humidity 52%
Thu, 17th
Allen SD Weather - Thursday, Sep 17, 2026 - Patchy Rain Nearby
Hi: 78°F 26°C
Lo: 61°F 16°C
Sunrise 06:29 AM
Sunset 06:53 PM
Wind SE 7 mph11 km/h
Dew Point 62°F17°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 14% *
Humidity 75%
Fri, 18th
Allen SD Weather - Friday, Sep 18, 2026 - Sunny
Hi: 96°F 35°C
Lo: 66°F 19°C
Sunrise 06:30 AM
Sunset 06:51 PM
Wind SSW 17 mph28 km/h
Dew Point 60°F16°C
uv Index 8
Barometric Pressure 29.85 in1011 mb
POP 1% *
Humidity 38%
Sat, 19th
Allen SD Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 85°F 29°C
Lo: 63°F 17°C
Sunrise 06:31 AM
Sunset 06:49 PM
Wind SE 8 mph13 km/h
Dew Point 46°F8°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 30%
Sun, 20th
Allen SD Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 80°F 27°C
Lo: 59°F 15°C
Sunrise 06:32 AM
Sunset 06:47 PM
Wind N 9 mph15 km/h
Dew Point 60°F15°C
uv Index 7
Barometric Pressure 29.8 in1009 mb
POP 2% *
Humidity 52%
Mon, 21st
Allen SD Weather - Monday, Sep 21, 2026 - Sunny
Hi: 69°F 20°C
Lo: 55°F 13°C
Sunrise 06:33 AM
Sunset 06:46 PM
Wind NW 14 mph23 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 43%
Tue, 22nd
Allen SD Weather - Tuesday, Sep 22, 2026 - Sunny
Hi: 78°F 26°C
Lo: 51°F 10°C
Sunrise 06:34 AM
Sunset 06:44 PM
Wind NW 9 mph14 km/h
Dew Point 43°F6°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 35%
* POP = Probability of Precipitation. Data for 12:00 PM.