10-day forecast for Fort Thompson, SD: 64° to 99°, with precipitation expected on 6 days. The table below breaks each day into morning, afternoon, evening and overnight.
94°
Best day: Tuesday, August 11
81° · 1 in
Worst day: Thursday, August 13
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1099° / 64°0.1
Morning66°feels 66°
Afternoon93°feels 91°
Evening91°feels 90°
Overnight67°feels 68°
99 °
Fort Thompson, Monday, 10 August
Rain. High 99°, low 64°.
Pressure29.83 inHg
Wind8 mph S
Humidity35%
Visibility6.2 mi
Dew point59°
Tue, 1194° / 67°0
Morning71°feels 71°
Afternoon91°feels 91°
Evening88°feels 88°
Overnight68°feels 68°
94 °
Fort Thompson, Tuesday, 11 August
Mostly clear. High 94°, low 67°.
Pressure29.83 inHg
Wind9 mph NE
Humidity42%
Visibility6.2 mi
Dew point60°
Wed, 1295° / 69°0.18
Morning72°feels 72°
Afternoon93°feels 92°
Evening87°feels 87°
Overnight77°feels 78°
95 °
Fort Thompson, Wednesday, 12 August
Light rain. High 95°, low 69°.
Pressure29.83 inHg
Wind10.5 mph E
Humidity39%
Visibility6.2 mi
Dew point61°
Thu, 1381° / 65°1
Morning67°feels 67°
Afternoon77°feels 77°
Evening76°feels 76°
Overnight67°feels 67°
81 °
Fort Thompson, Thursday, 13 August
Heavy rain. High 81°, low 65°.
Pressure29.94 inHg
Wind19.8 mph E
Humidity60%
Visibility—
Dew point61°
Fri, 1470° / 64°0.89
Morning65°feels 66°
Afternoon68°feels 69°
Evening65°feels 66°
Overnight65°feels 66°
70 °
Fort Thompson, Friday, 14 August
Heavy rain. High 70°, low 64°.
Pressure30.00 inHg
Wind16.7 mph SE
Humidity71%
Visibility—
Dew point59°
Sat, 1582° / 66°0.03
Morning69°feels 70°
Afternoon76°feels 77°
Evening79°feels 79°
Overnight71°feels 72°
82 °
Fort Thompson, Saturday, 15 August
Light rain. High 82°, low 66°.
Pressure30.06 inHg
Wind7.1 mph NW
Humidity74%
Visibility—
Dew point65°
Sun, 1687° / 67°0
Morning71°feels 72°
Afternoon83°feels 83°
Evening83°feels 83°
Overnight74°feels 74°
87 °
Fort Thompson, Sunday, 16 August
Overcast. High 87°, low 67°.
Pressure30.15 inHg
Wind8.4 mph SE
Humidity47%
Visibility—
Dew point58°
Mon, 1792° / 66°0.18
Morning72°feels 73°
Afternoon87°feels 90°
Evening89°feels 92°
Overnight73°feels 74°
92 °
Fort Thompson, Monday, 17 August
Rain. High 92°, low 66°.
Pressure29.91 inHg
Wind23.6 mph N
Humidity53%
Visibility—
Dew point64°
Tue, 1896° / 69°0.71
Morning77°feels 77°
Afternoon95°feels 92°
Evening87°feels 86°
Overnight75°feels 75°
96 °
Fort Thompson, Tuesday, 18 August
Heavy rain. High 96°, low 69°.
Pressure29.74 inHg
Wind18.1 mph NW
Humidity23%
Visibility—
Dew point49°
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 Fort Thompson, 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.