10-day forecast for Grindstone, SD: 63° to 103°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
103°
Best day: Monday, August 10
72° · 1.11 in
Worst day: Thursday, August 13
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0993° / 67°0
Morning74°feels 74°
Afternoon92°feels 88°
Evening86°feels 83°
Overnight73°feels 71°
93 °
Grindstone, Sunday, 9 August
Overcast. High 93°, low 67°.
Pressure29.80 inHg
Wind14.9 mph NE
Humidity31%
Visibility6.2 mi
Dew point53°
Mon, 10103° / 66°0
Morning75°feels 75°
Afternoon100°feels 97°
Evening88°feels 85°
Overnight70°feels 68°
103 °
Grindstone, Monday, 10 August
Partly cloudy. High 103°, low 66°.
Pressure29.74 inHg
Wind13.5 mph SE
Humidity28%
Visibility6.2 mi
Dew point55°
Tue, 1194° / 68°0.1
Morning73°feels 72°
Afternoon92°feels 90°
Evening82°feels 83°
Overnight70°feels 70°
94 °
Grindstone, Tuesday, 11 August
Rain. High 94°, low 68°.
Pressure29.83 inHg
Wind9.8 mph E
Humidity39%
Visibility6.2 mi
Dew point59°
Wed, 1291° / 67°0.28
Morning74°feels 74°
Afternoon88°feels 87°
Evening79°feels 79°
Overnight72°feels 73°
91 °
Grindstone, Wednesday, 12 August
Rain. High 91°, low 67°.
Pressure29.85 inHg
Wind13.4 mph SE
Humidity38%
Visibility6.2 mi
Dew point57°
Thu, 1372° / 63°1.11
Morning65°feels 65°
Afternoon72°feels 72°
Evening69°feels 70°
Overnight67°feels 67°
72 °
Grindstone, Thursday, 13 August
Heavy rain. High 72°, low 63°.
Pressure29.97 inHg
Wind22.7 mph E
Humidity66%
Visibility—
Dew point59°
Fri, 1477° / 64°0.02
Morning66°feels 66°
Afternoon72°feels 72°
Evening75°feels 75°
Overnight69°feels 69°
77 °
Grindstone, Friday, 14 August
Light rain. High 77°, low 64°.
Pressure30.03 inHg
Wind18.9 mph SE
Humidity56%
Visibility—
Dew point54°
Sat, 1584° / 67°0.01
Morning71°feels 71°
Afternoon80°feels 80°
Evening81°feels 81°
Overnight73°feels 74°
84 °
Grindstone, Saturday, 15 August
Light rain. High 84°, low 67°.
Pressure30.06 inHg
Wind15.1 mph S
Humidity51%
Visibility—
Dew point58°
Sun, 1683° / 69°0.02
Morning71°feels 72°
Afternoon78°feels 78°
Evening81°feels 81°
Overnight70°feels 70°
83 °
Grindstone, Sunday, 16 August
Light rain. High 83°, low 69°.
Pressure30.03 inHg
Wind13.8 mph E
Humidity63%
Visibility—
Dew point62°
Mon, 1792° / 66°0.18
Morning71°feels 72°
Afternoon83°feels 83°
Evening72°feels 72°
Overnight70°feels 70°
92 °
Grindstone, Monday, 17 August
Rain. High 92°, low 66°.
Pressure29.94 inHg
Wind14.4 mph SW
Humidity44%
Visibility—
Dew point59°
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 Grindstone, 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.