10-day forecast for Isabel, SD: 34° to 75°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.
75°
Best day: Wednesday, October 21
47° · 0.04 in
Worst day: Thursday, October 15
Tap any day below to see morning, afternoon, evening and overnight.
Fri, 1651° / 34°0
Morning35°feels 27°
Afternoon50°feels 47°
Evening42°feels 35°
Overnight37°feels 27°
51 °
Isabel, Friday, 16 October
Clear. High 51°, low 34°.
Pressure30.71 inHg
Wind4.8 mph W
Humidity55%
Visibility6.2 mi
Dew point27°
Sat, 1768° / 38°0
Morning40°feels 33°
Afternoon67°feels 65°
Evening52°feels 49°
Overnight41°feels 33°
68 °
Isabel, Saturday, 17 October
Clear. High 68°, low 38°.
Pressure30.06 inHg
Wind7.7 mph S
Humidity34%
Visibility6.2 mi
Dew point32°
Sun, 1864° / 48°0
Morning52°feels 50°
Afternoon64°feels 61°
Evening51°feels 48°
Overnight49°feels 46°
64 °
Isabel, Sunday, 18 October
Clear. High 64°, low 48°.
Pressure30.15 inHg
Wind13.8 mph NE
Humidity33%
Visibility6.2 mi
Dew point33°
Mon, 1961° / 41°0
Morning46°feels 42°
Afternoon57°feels 55°
Evening53°feels 51°
Overnight47°feels 43°
61 °
Isabel, Monday, 19 October
Clear. High 61°, low 41°.
Pressure30.15 inHg
Wind9.8 mph SE
Humidity51%
Visibility—
Dew point38°
Tue, 2069° / 45°0
Morning50°feels 46°
Afternoon63°feels 61°
Evening64°feels 62°
Overnight58°feels 55°
69 °
Isabel, Tuesday, 20 October
Mostly clear. High 69°, low 45°.
Pressure29.97 inHg
Wind17.5 mph SE
Humidity53%
Visibility—
Dew point43°
Wed, 2175° / 51°0
Morning57°feels 56°
Afternoon69°feels 68°
Evening66°feels 65°
Overnight60°feels 60°
75 °
Isabel, Wednesday, 21 October
Clear. High 75°, low 51°.
Pressure29.77 inHg
Wind17.2 mph SE
Humidity48%
Visibility—
Dew point47°
Thu, 2275° / 52°0.01
Morning63°feels 63°
Afternoon71°feels 70°
Evening59°feels 57°
Overnight53°feels 52°
75 °
Isabel, Thursday, 22 October
Light rain. High 75°, low 52°.
Pressure29.47 inHg
Wind22.4 mph W
Humidity57%
Visibility—
Dew point55°
Fri, 2352° / 41°0
Morning49°feels 44°
Afternoon51°feels 48°
Evening45°feels 38°
Overnight43°feels 36°
52 °
Isabel, Friday, 23 October
Overcast. High 52°, low 41°.
Pressure29.80 inHg
Wind21.9 mph NW
Humidity51%
Visibility—
Dew point34°
Sat, 2445° / 37°0.01
Morning39°feels 32°
Afternoon43°feels 36°
Evening41°feels 35°
Overnight38°feels 31°
45 °
Isabel, Saturday, 24 October
Light rain. High 45°, low 37°.
Pressure30.42 inHg
Wind17.8 mph NW
Humidity37%
Visibility—
Dew point18°
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.