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Iona SD Weather - Clear - 74°F
Clear
74°F
Updated 5:48 am
Feels Like 71°F
Humidity 96%
Wind SW 10 mph
Barometer  29.87 in
Dew Point 73°F
Iona SD Weather - Clear - 23°C
Clear
23°C
Updated 5:48 am
Feels Like 21°C
Humidity 96%
Wind SW 16 km/h
Barometer  101.1 kPa
Dew Point 23°C
Iona, SD Weather and Current Conditionsiona sd weather forecast

Iona, SD Weather Forecast

Iona South Dakota WeatherIona, South Dakota Weather Weather Forecast
Here is the API 14 day weather forecast for Iona, South Dakota. Note: The 7-day weather forecast for Iona, 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.
Iona, SD Weather Forecast Dated: 548 AM Tue Sep 08 2026
Expect a mild stretch with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.

Tuesday, September 8, 2026

Mid-Morning
Iona Weather - 2026-09-08 - Morning - Overcast
74°F 23°C
Overcast
Mid-Afternoon
Iona Weather - 2026-09-08 - Afternoon - Overcast
82°F 28°C
Overcast
Early-Evening
Iona Weather - 2026-09-08 - Evening - Sunny
82°F 28°C
Sunny
Warm and summery near 82°F 28°C, overcast through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds easing from NW 15 mph 24 km/h to NNE 6 mph 10 km/h.

Wednesday, September 9, 2026

Mid-Morning
Iona Weather - 2026-09-09 - Morning - Sunny
65°F 18°C
Sunny
Mid-Afternoon
Iona Weather - 2026-09-09 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Iona Weather - 2026-09-09 - Evening - Sunny
77°F 25°C
Sunny
Comfortable with temperatures reaching 77°F 25°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds tapering down from NNW 14 mph 22 km/h to NE 6 mph 9 km/h.

Thursday, September 10, 2026

Mid-Morning
Iona Weather - 2026-09-10 - Morning - Sunny
65°F 19°C
Sunny
Mid-Afternoon
Iona Weather - 2026-09-10 - Afternoon - Sunny
93°F 34°C
Sunny
Early-Evening
Iona Weather - 2026-09-10 - Evening - Sunny
91°F 33°C
Sunny
Sizzling hot with 93°F 34°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds moving from the S to the W at 11 mph 18 km/h.

Friday, September 11, 2026

Mid-Morning
Iona Weather - 2026-09-11 - Morning - Partly Cloudy
66°F 19°C
Partly Cloudy
Mid-Afternoon
Iona Weather - 2026-09-11 - Afternoon - Sunny
81°F 27°C
Sunny
Early-Evening
Iona Weather - 2026-09-11 - Evening - Sunny
73°F 23°C
Sunny
Warm temperatures up to 81°F 27°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds swinging from the N to the NNW at 15 mph 24 km/h. Gusts up to 26 mph 41 km/h.

Saturday, September 12, 2026

Mid-Morning
Iona Weather - 2026-09-12 - Morning - Overcast
54°F 12°C
Overcast
Mid-Afternoon
Iona Weather - 2026-09-12 - Afternoon - Partly Cloudy
85°F 30°C
Partly Cloudy
Early-Evening
Iona Weather - 2026-09-12 - Evening - Overcast
87°F 31°C
Overcast
Very warm with a high of 85°F 30°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds building from NNW at 7 mph 12 km/h to SE at 15 mph 24 km/h. Gusts up to 24 mph 39 km/h.

Sunday, September 13, 2026

Mid-Morning
Iona Weather - 2026-09-13 - Morning - Light Fog
64°F 18°C
Light Fog
Mid-Afternoon
Iona Weather - 2026-09-13 - Afternoon - Scattered Showers
68°F 20°C
Scattered Showers
Early-Evening
Iona Weather - 2026-09-13 - Evening - Scattered Showers
60°F 16°C
Scattered Showers
Pleasant near 68°F 20°C, locally heavy downpours at times, with steady humidity and barometric pressure rising. Winds turning from the ENE to the NNW at 14 mph 23 km/h. Gusts up to 22 mph 36 km/h.

Monday, September 14, 2026

Mid-Morning
Iona Weather - 2026-09-14 - Morning - Sunny
43°F 6°C
Sunny
Mid-Afternoon
Iona Weather - 2026-09-14 - Afternoon - Cloudy
52°F 11°C
Cloudy
Early-Evening
Iona Weather - 2026-09-14 - Evening - Partly Cloudy
47°F 9°C
Partly Cloudy
Chilly near 52°F 11°C, partly cloudy through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds switching from the WNW to the NNW at 17 mph 26 km/h. Gusts up to 24 mph 39 km/h.

Tuesday, September 15, 2026

Mid-Morning
Iona Weather - 2026-09-15 - Morning - Sunny
48°F 9°C
Sunny
Mid-Afternoon
Iona Weather - 2026-09-15 - Afternoon - Sunny
60°F 16°C
Sunny
Early-Evening
Iona Weather - 2026-09-15 - Evening - Overcast
60°F 16°C
Overcast
Cool with a high near 60°F 16°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 NW to the SSE at 4 mph 7 km/h.

Wednesday, September 16, 2026

Mid-Morning
Iona Weather - 2026-09-16 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Iona Weather - 2026-09-16 - Afternoon - Overcast
73°F 23°C
Overcast
Early-Evening
Iona Weather - 2026-09-16 - Evening - Overcast
69°F 21°C
Overcast
Mild temperatures up to 73°F 23°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds swinging from the SE to the S at 13 mph 21 km/h. Gusts up to 23 mph 36 km/h.

Thursday, September 17, 2026

Mid-Morning
Iona Weather - 2026-09-17 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Iona Weather - 2026-09-17 - Afternoon - Sunny
83°F 28°C
Sunny
Early-Evening
Iona Weather - 2026-09-17 - Evening - Sunny
84°F 29°C
Sunny
Very warm with a high of 83°F 28°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds shifting from the SSW to the S at 15 mph 23 km/h. Gusts up to 26 mph 41 km/h.

Friday, September 18, 2026

Mid-Morning
Iona Weather - 2026-09-18 - Morning - Scattered Showers
54°F 12°C
Scattered Showers
Mid-Afternoon
Iona Weather - 2026-09-18 - Afternoon - Light Showers
45°F 7°C
Light Showers
Early-Evening
Iona Weather - 2026-09-18 - Evening - Light Showers
49°F 10°C
Light Showers
Chilly near 45°F 7°C, scattered downpours possible, with steady humidity and barometric pressure rising. Winds tapering down from N 19 mph 31 km/h to NNW 10 mph 16 km/h.

Saturday, September 19, 2026

Mid-Morning
Iona Weather - 2026-09-19 - Morning - Sunny
45°F 7°C
Sunny
Mid-Afternoon
Iona Weather - 2026-09-19 - Afternoon - Sunny
57°F 14°C
Sunny
Early-Evening
Iona Weather - 2026-09-19 - Evening - Sunny
58°F 14°C
Sunny
Crisp with a high near 57°F 14°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the E to the SSE at 9 mph 14 km/h.

Sunday, September 20, 2026

Mid-Morning
Iona Weather - 2026-09-20 - Morning - Sunny
52°F 11°C
Sunny
Mid-Afternoon
Iona Weather - 2026-09-20 - Afternoon - Sunny
70°F 21°C
Sunny
Early-Evening
Iona Weather - 2026-09-20 - Evening - Sunny
73°F 23°C
Sunny
Enjoyable around 70°F 21°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds easing from S 14 mph 23 km/h to SSE 4 mph 6 km/h.

Monday, September 21, 2026

Mid-Morning
Iona Weather - 2026-09-21 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Iona Weather - 2026-09-21 - Afternoon - Sunny
86°F 30°C
Sunny
Early-Evening
Iona Weather - 2026-09-21 - Evening - Sunny
86°F 30°C
Sunny
Warm temperatures up to 86°F 30°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds swinging from the SSE to the SE at 10 mph 16 km/h. Gusts up to 22 mph 35 km/h.

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Weather by the Numbers

Tue, 8th
Iona SD Weather - Tuesday, Sep 8, 2026 - Overcast
Hi: 83°F 28°C
Lo: 69°F 20°C
Sunrise 07:11 AM
Sunset 08:02 PM
Wind NNW 16 mph26 km/h
Dew Point 35°F2°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 9% *
Humidity 22%
Wed, 9th
Iona SD Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 78°F 26°C
Lo: 65°F 18°C
Sunrise 07:12 AM
Sunset 08:00 PM
Wind NW 15 mph23 km/h
Dew Point 39°F4°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 1% *
Humidity 30%
Thu, 10th
Iona SD Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 99°F 37°C
Lo: 65°F 19°C
Sunrise 07:13 AM
Sunset 07:58 PM
Wind SSW 16 mph26 km/h
Dew Point 45°F7°C
uv Index 5
Barometric Pressure 29.8 in1009 mb
POP 0% *
Humidity 26%
Fri, 11th
Iona SD Weather - Friday, Sep 11, 2026 - Sunny
Hi: 81°F 27°C
Lo: 64°F 18°C
Sunrise 07:14 AM
Sunset 07:56 PM
Wind N 15 mph24 km/h
Dew Point 38°F4°C
uv Index 5
Barometric Pressure 29.83 in1010 mb
POP 1% *
Humidity 26%
Sat, 12th
Iona SD Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 88°F 31°C
Lo: 53°F 12°C
Sunrise 07:15 AM
Sunset 07:54 PM
Wind SE 16 mph26 km/h
Dew Point 40°F5°C
uv Index 6
Barometric Pressure 29.77 in1008 mb
POP 2% *
Humidity 27%
Sun, 13th
Iona SD Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 79°F 26°C
Lo: 54°F 12°C
Sunrise 07:16 AM
Sunset 07:53 PM
Wind ENE 7 mph11 km/h
Dew Point 62°F17°C
uv Index 4
Barometric Pressure 29.62 in1003 mb
POP 26% *
Humidity 84%
Mon, 14th
Iona SD Weather - Monday, Sep 14, 2026 - Cloudy
Hi: 53°F 12°C
Lo: 40°F 5°C
Sunrise 07:17 AM
Sunset 07:51 PM
Wind NW 23 mph37 km/h
Dew Point 32°F0°C
uv Index 2
Barometric Pressure 30.21 in1023 mb
POP 9% *
Humidity 54%
Tue, 15th
Iona SD Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 62°F 17°C
Lo: 44°F 7°C
Sunrise 07:18 AM
Sunset 07:49 PM
Wind NW 8 mph13 km/h
Dew Point 29°F-2°C
uv Index 4
Barometric Pressure 30.33 in1027 mb
POP 1% *
Humidity 39%
Wed, 16th
Iona SD Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 75°F 24°C
Lo: 54°F 12°C
Sunrise 07:20 AM
Sunset 07:47 PM
Wind S 7 mph11 km/h
Dew Point 33°F0°C
uv Index 5
Barometric Pressure 30.24 in1024 mb
POP 5% *
Humidity 31%
Thu, 17th
Iona SD Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 86°F 30°C
Lo: 55°F 13°C
Sunrise 07:21 AM
Sunset 07:45 PM
Wind S 13 mph20 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 41%
Fri, 18th
Iona SD Weather - Friday, Sep 18, 2026 - Overcast
Hi: 81°F 27°C
Lo: 43°F 6°C
Sunrise 07:22 AM
Sunset 07:44 PM
Wind ESE 15 mph25 km/h
Dew Point 40°F5°C
uv Index 2
Barometric Pressure 30.24 in1024 mb
POP 57% *
Humidity 71%
Sat, 19th
Iona SD Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 59°F 15°C
Lo: 45°F 7°C
Sunrise 07:23 AM
Sunset 07:42 PM
Wind ESE 5 mph8 km/h
Dew Point 25°F-4°C
uv Index 4
Barometric Pressure 30.45 in1031 mb
POP 1% *
Humidity 37%
Sun, 20th
Iona SD Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 76°F 24°C
Lo: 49°F 9°C
Sunrise 07:24 AM
Sunset 07:40 PM
Wind S 13 mph21 km/h
Dew Point 33°F0°C
uv Index 5
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 34%
Mon, 21st
Iona SD Weather - Monday, Sep 21, 2026 - Sunny
Hi: 91°F 33°C
Lo: 61°F 16°C
Sunrise 07:25 AM
Sunset 07:38 PM
Wind SSE 9 mph14 km/h
Dew Point 37°F3°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 0% *
Humidity 26%
* POP = Probability of Precipitation. Data for 12:00 PM.