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As of 17:36 MDT

Weather in Grindstone, SD

98°Current weather

Grindstone, Saturday, 8 August, 17:36

Clear. Feels like 94°. High 99°, low 64°.

Pressure29.65 inHg
Wind12.1 mph N
Humidity18%
Visibility6.2 mi
Dew point47°
Sun, 0993° / 66°0Partly cloudy
93 °Partly cloudy

Grindstone, Sunday, 9 August

Partly cloudy. High 93°, low 66°.

Pressure29.80 inHg
Wind13.5 mph NE
Humidity35%
Visibility6.2 mi
Dew point56°
Mon, 10103° / 67°0Mostly clear
103 °Mostly clear

Grindstone, Monday, 10 August

Mostly clear. High 103°, low 67°.

Pressure29.74 inHg
Wind11.3 mph S
Humidity32%
Visibility6.2 mi
Dew point59°
Tue, 1193° / 68°0.02Light rain
93 °Light rain

Grindstone, Tuesday, 11 August

Light rain. High 93°, low 68°.

Pressure29.83 inHg
Wind10.8 mph E
Humidity37%
Visibility6.2 mi
Dew point57°
Wed, 1294° / 68°0.18Rain
94 °Rain

Grindstone, Wednesday, 12 August

Rain. High 94°, low 68°.

Pressure29.77 inHg
Wind8.4 mph SE
Humidity27%
Visibility6.2 mi
Dew point53°
Thu, 1384° / 66°0.06Light rain
84 °Light rain

Grindstone, Thursday, 13 August

Light rain. High 84°, low 66°.

Pressure30.03 inHg
Wind14.6 mph SE
Humidity42%
Visibility—
Dew point51°
Fri, 1494° / 67°0Partly cloudy
94 °Partly cloudy

Grindstone, Friday, 14 August

Partly cloudy. High 94°, low 67°.

Pressure29.94 inHg
Wind25.9 mph S
Humidity37%
Visibility—
Dew point56°
Sat, 1595° / 73°0Overcast
95 °Overcast

Grindstone, Saturday, 15 August

Overcast. High 95°, low 73°.

Pressure29.94 inHg
Wind17.5 mph S
Humidity38%
Visibility—
Dew point58°
Sun, 1698° / 75°0.01Light rain
98 °Light rain

Grindstone, Sunday, 16 August

Light rain. High 98°, low 75°.

Pressure29.88 inHg
Wind15 mph N
Humidity31%
Visibility—
Dew point57°
Mon, 1795° / 75°0.06Light rain
95 °Light rain

Grindstone, Monday, 17 August

Light rain. High 95°, low 75°.

Pressure29.97 inHg
Wind20.8 mph S
Humidity31%
Visibility—
Dew point54°
Tue, 1899° / 74°0.01Light rain
99 °Light rain

Grindstone, Tuesday, 18 August

Light rain. High 99°, low 74°.

Pressure29.94 inHg
Wind14.8 mph E
Humidity22%
Visibility—
Dew point48°
Wed, 1984° / 74°0.15Light rain
84 °Light rain

Grindstone, Wednesday, 19 August

Light rain. High 84°, low 74°.

Pressure29.91 inHg
Wind22 mph E
Humidity44%
Visibility—
Dew point57°
Thu, 2086° / 66°0Mostly clear
86 °Mostly clear

Grindstone, Thursday, 20 August

Mostly clear. High 86°, low 66°.

Pressure30.00 inHg
Wind11.4 mph E
Humidity40%
Visibility—
Dew point53°
Fri, 2197° / 70°0.08Light rain
97 °Light rain

Grindstone, Friday, 21 August

Light rain. High 97°, low 70°.

Pressure29.83 inHg
Wind10 mph E
Humidity32%
Visibility—
Dew point54°
Sat, 2283° / 60°0Overcast
83 °Overcast

Grindstone, Saturday, 22 August

Overcast. High 83°, low 60°.

Pressure30.15 inHg
Wind18.2 mph NE
Humidity52%
Visibility—
Dew point51°
Sun, 2389° / 64°0.01Light rain
89 °Light rain

Grindstone, Sunday, 23 August

Light rain. High 89°, low 64°.

Pressure30.00 inHg
Wind13.3 mph NE
Humidity44%
Visibility—
Dew point56°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Grindstone, SD are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Grindstone, SD since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.