10-day forecast for Westport, SD: 54° to 98°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
90°
Best day: Wednesday, August 12
92° · 0.91 in
Worst day: Monday, August 10
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1092° / 54°0.91
Morning59°feels 56°
Afternoon87°feels 84°
Evening92°feels 90°
Overnight59°feels 57°
92 °
Westport, Monday, 10 August
Heavy rain. High 92°, low 54°.
Pressure29.83 inHg
Wind6.7 mph S
Humidity29%
Visibility6.2 mi
Dew point53°
Tue, 1190° / 61°0.02
Morning62°feels 62°
Afternoon86°feels 85°
Evening82°feels 81°
Overnight65°feels 66°
90 °
Westport, Tuesday, 11 August
Light rain. High 90°, low 61°.
Pressure29.88 inHg
Wind10.8 mph NE
Humidity45%
Visibility6.2 mi
Dew point57°
Wed, 1290° / 63°0
Morning65°feels 64°
Afternoon87°feels 84°
Evening82°feels 80°
Overnight67°feels 65°
90 °
Westport, Wednesday, 12 August
Clear. High 90°, low 63°.
Pressure29.94 inHg
Wind6.5 mph E
Humidity27%
Visibility6.2 mi
Dew point45°
Thu, 1382° / 62°0
Morning67°feels 66°
Afternoon79°feels 79°
Evening76°feels 76°
Overnight69°feels 68°
82 °
Westport, Thursday, 13 August
Overcast. High 82°, low 62°.
Pressure30.00 inHg
Wind15 mph SE
Humidity34%
Visibility—
Dew point46°
Fri, 1485° / 60°0
Morning66°feels 65°
Afternoon81°feels 80°
Evening77°feels 76°
Overnight67°feels 66°
85 °
Westport, Friday, 14 August
Overcast. High 85°, low 60°.
Pressure30.09 inHg
Wind14.1 mph S
Humidity33%
Visibility—
Dew point47°
Sat, 1576° / 63°0.04
Morning64°feels 64°
Afternoon68°feels 68°
Evening75°feels 76°
Overnight70°feels 70°
76 °
Westport, Saturday, 15 August
Light rain. High 76°, low 63°.
Pressure30.09 inHg
Wind10.3 mph S
Humidity83%
Visibility—
Dew point60°
Sun, 1688° / 60°0
Morning67°feels 66°
Afternoon83°feels 82°
Evening84°feels 82°
Overnight72°feels 71°
88 °
Westport, Sunday, 16 August
Overcast. High 88°, low 60°.
Pressure30.15 inHg
Wind7.3 mph N
Humidity36%
Visibility—
Dew point50°
Mon, 1788° / 66°0.26
Morning72°feels 71°
Afternoon85°feels 86°
Evening80°feels 83°
Overnight70°feels 71°
88 °
Westport, Monday, 17 August
Rain. High 88°, low 66°.
Pressure29.94 inHg
Wind16.8 mph S
Humidity45%
Visibility—
Dew point59°
Tue, 1898° / 70°0.06
Morning76°feels 78°
Afternoon94°feels 96°
Evening94°feels 94°
Overnight81°feels 81°
98 °
Westport, Tuesday, 18 August
Light rain. High 98°, low 70°.
Pressure29.74 inHg
Wind7.3 mph S
Humidity41%
Visibility—
Dew point63°
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 Westport, 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.