10-day forecast for Iona, SD: 37° to 70°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
70°
Best day: Friday, October 30
45° · 1.07 in
Worst day: Monday, October 26
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 2548° / 41°0.6
Morning47°feels 44°
Afternoon45°feels 40°
Evening42°feels 36°
Overnight47°feels 47°
48 °
Iona, Sunday, 25 October
Rain. High 48°, low 41°.
Pressure30.45 inHg
Wind7.7 mph NE
Humidity84%
Visibility2.6 mi
Dew point42°
Mon, 2645° / 41°1.07
Morning43°feels 38°
Afternoon44°feels 37°
Evening43°feels 36°
Overnight43°feels 37°
45 °
Iona, Monday, 26 October
Rain. High 45°, low 41°.
Pressure30.27 inHg
Wind13.1 mph NE
Humidity94%
Visibility1.6 mi
Dew point43°
Tue, 2757° / 37°0.16
Morning37°feels 32°
Afternoon54°feels 52°
Evening54°feels 52°
Overnight40°feels 33°
57 °
Iona, Tuesday, 27 October
Rain. High 57°, low 37°.
Pressure30.03 inHg
Wind8.5 mph S
Humidity66%
Visibility6.2 mi
Dew point37°
Wed, 2862° / 41°0
Morning43°feels 39°
Afternoon59°feels 57°
Evening52°feels 49°
Overnight46°feels 41°
62 °
Iona, Wednesday, 28 October
Overcast. High 62°, low 41°.
Pressure30.09 inHg
Wind4.7 mph SW
Humidity54%
Visibility6.2 mi
Dew point37°
Thu, 2962° / 42°0
Morning47°feels 46°
Afternoon59°feels 57°
Evening58°feels 56°
Overnight54°feels 52°
62 °
Iona, Thursday, 29 October
Clear. High 62°, low 42°.
Pressure30.18 inHg
Wind12.1 mph SE
Humidity54%
Visibility—
Dew point40°
Fri, 3070° / 54°0
Morning58°feels 57°
Afternoon66°feels 65°
Evening62°feels 61°
Overnight58°feels 57°
70 °
Iona, Friday, 30 October
Overcast. High 70°, low 54°.
Pressure29.83 inHg
Wind11.7 mph SE
Humidity64%
Visibility—
Dew point52°
Sat, 3160° / 52°0.44
Morning55°feels 55°
Afternoon59°feels 59°
Evening56°feels 56°
Overnight52°feels 51°
60 °
Iona, Saturday, 31 October
Rain. High 60°, low 52°.
Pressure29.65 inHg
Wind16.2 mph NW
Humidity88%
Visibility—
Dew point55°
Sun, 0149° / 42°0.03
Morning45°feels 40°
Afternoon48°feels 44°
Evening44°feels 37°
Overnight42°feels 35°
49 °
Iona, Sunday, 1 November
Light rain. High 49°, low 42°.
Pressure29.94 inHg
Wind16.3 mph NW
Humidity51%
Visibility—
Dew point31°
Mon, 0250° / 37°0
Morning40°feels 31°
Afternoon46°feels 40°
Evening43°feels 40°
Overnight40°feels 38°
50 °
Iona, Monday, 2 November
Clear. High 50°, low 37°.
Pressure30.27 inHg
Wind17.2 mph NW
Humidity50%
Visibility—
Dew point28°
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.