10-day forecast for Iona, SD: 39° to 71°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
70°
Best day: Sunday, November 1
42° · 0.9 in
Worst day: Monday, October 26
Tap any day below to see morning, afternoon, evening and overnight.
Tue, 2764° / 40°0
Morning40°feels 40°
Afternoon57°feels 55°
Evening56°feels 55°
Overnight41°feels 38°
64 °
Iona, Tuesday, 27 October
Clear. High 64°, low 40°.
Pressure30.06 inHg
Wind12.3 mph S
Humidity67%
Visibility6.2 mi
Dew point39°
Wed, 2869° / 47°0
Morning50°feels 47°
Afternoon67°feels 66°
Evening52°feels 51°
Overnight50°feels 49°
69 °
Iona, Wednesday, 28 October
Overcast. High 69°, low 47°.
Pressure29.88 inHg
Wind13.2 mph SW
Humidity84%
Visibility6.2 mi
Dew point54°
Thu, 2963° / 41°0
Morning41°feels 39°
Afternoon61°feels 60°
Evening55°feels 54°
Overnight44°feels 44°
63 °
Iona, Thursday, 29 October
Mostly clear. High 63°, low 41°.
Pressure30.12 inHg
Wind9.1 mph SE
Humidity66%
Visibility6.2 mi
Dew point45°
Fri, 3064° / 47°0
Morning49°feels 48°
Afternoon60°feels 59°
Evening60°feels 60°
Overnight50°feels 49°
64 °
Iona, Friday, 30 October
Overcast. High 64°, low 47°.
Pressure30.09 inHg
Wind10.6 mph E
Humidity81%
Visibility—
Dew point52°
Sat, 3171° / 57°0.01
Morning60°feels 60°
Afternoon68°feels 67°
Evening62°feels 61°
Overnight59°feels 58°
71 °
Iona, Saturday, 31 October
Light rain. High 71°, low 57°.
Pressure29.94 inHg
Wind14.1 mph S
Humidity63%
Visibility—
Dew point54°
Sun, 0170° / 52°0
Morning56°feels 55°
Afternoon66°feels 65°
Evening61°feels 60°
Overnight58°feels 57°
70 °
Iona, Sunday, 1 November
Overcast. High 70°, low 52°.
Pressure29.91 inHg
Wind12.4 mph S
Humidity55%
Visibility—
Dew point49°
Mon, 0260° / 46°0.66
Morning55°feels 53°
Afternoon50°feels 43°
Evening47°feels 39°
Overnight48°feels 41°
60 °
Iona, Monday, 2 November
Rain. High 60°, low 46°.
Pressure29.71 inHg
Wind26.1 mph NW
Humidity89%
Visibility—
Dew point48°
Tue, 0350° / 41°0
Morning43°feels 34°
Afternoon47°feels 40°
Evening42°feels 38°
Overnight41°feels 36°
50 °
Iona, Tuesday, 3 November
Clear. High 50°, low 41°.
Pressure30.00 inHg
Wind22.8 mph NW
Humidity41%
Visibility—
Dew point24°
Wed, 0461° / 39°0
Morning45°feels 40°
Afternoon58°feels 55°
Evening49°feels 47°
Overnight45°feels 43°
61 °
Iona, Wednesday, 4 November
Overcast. High 61°, low 39°.
Pressure29.68 inHg
Wind14.8 mph S
Humidity41%
Visibility—
Dew point33°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Iona, SD around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.