10-day forecast for Isabel, SD: 34° to 75°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
75°
Best day: Thursday, October 22
42° · 0.33 in
Worst day: Saturday, October 24
Tap any day below to see morning, afternoon, evening and overnight.
Sat, 1770° / 39°0
Morning40°feels 34°
Afternoon69°feels 67°
Evening52°feels 49°
Overnight42°feels 35°
70 °
Isabel, Saturday, 17 October
Clear. High 70°, low 39°.
Pressure30.06 inHg
Wind7.4 mph SW
Humidity32%
Visibility6.2 mi
Dew point32°
Sun, 1865° / 46°0
Morning51°feels 48°
Afternoon65°feels 63°
Evening51°feels 49°
Overnight46°feels 43°
65 °
Isabel, Sunday, 18 October
Mostly clear. High 65°, low 46°.
Pressure30.09 inHg
Wind12.9 mph N
Humidity38%
Visibility6.2 mi
Dew point38°
Mon, 1961° / 41°0
Morning45°feels 41°
Afternoon60°feels 58°
Evening51°feels 49°
Overnight43°feels 40°
61 °
Isabel, Monday, 19 October
Clear. High 61°, low 41°.
Pressure30.06 inHg
Wind7.4 mph E
Humidity53%
Visibility6.2 mi
Dew point42°
Tue, 2066° / 45°0
Morning50°feels 46°
Afternoon62°feels 61°
Evening58°feels 58°
Overnight53°feels 51°
66 °
Isabel, Tuesday, 20 October
Clear. High 66°, low 45°.
Pressure29.91 inHg
Wind14.7 mph SE
Humidity59%
Visibility—
Dew point46°
Wed, 2171° / 49°0
Morning54°feels 53°
Afternoon65°feels 64°
Evening62°feels 61°
Overnight57°feels 55°
71 °
Isabel, Wednesday, 21 October
Clear. High 71°, low 49°.
Pressure29.94 inHg
Wind11.1 mph N
Humidity56%
Visibility—
Dew point47°
Thu, 2275° / 53°0
Morning59°feels 57°
Afternoon72°feels 71°
Evening68°feels 67°
Overnight64°feels 63°
75 °
Isabel, Thursday, 22 October
Partly cloudy. High 75°, low 53°.
Pressure29.85 inHg
Wind15.7 mph SE
Humidity46%
Visibility—
Dew point48°
Fri, 2366° / 54°0.19
Morning63°feels 63°
Afternoon60°feels 60°
Evening58°feels 57°
Overnight56°feels 55°
66 °
Isabel, Friday, 23 October
Light rain. High 66°, low 54°.
Pressure29.53 inHg
Wind24.7 mph SE
Humidity87%
Visibility—
Dew point57°
Sat, 2442° / 37°0.33
Morning39°feels 28°
Afternoon41°feels 29°
Evening38°feels 26°
Overnight41°feels 31°
42 °
Isabel, Saturday, 24 October
Snow. High 42°, low 37°.
Pressure30.00 inHg
Wind33 mph W
Humidity69%
Visibility—
Dew point32°
Sun, 2548° / 34°0
Morning37°feels 31°
Afternoon45°feels 42°
Evening42°feels 39°
Overnight39°feels 35°
48 °
Isabel, Sunday, 25 October
Partly cloudy. High 48°, low 34°.
Pressure30.42 inHg
Wind16.3 mph NW
Humidity34%
Visibility—
Dew point17°
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 Isabel, 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.