Weather in Grindstone, SD
Grindstone, Saturday, 10 October, 21:33
Overcast. Feels like 64°. High 89°, low 64°.
Monthly outlook for Grindstone, SD: average high 65.1°, average low 47.3°. That is 2.7° above the climate normal for October. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 10 October (89.3°), the coolest 17 October (29.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 64.1° | 61.1° | +1.7° |
| 20 October – 29 October | 66.8° | 57.9° | +4.9° |
| 30 October – 8 November | at normal | 51.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Quinn (13 mi).
0Grindstone, Sunday, 11 October
Overcast. High 67°, low 52°.
0.12
Grindstone, Monday, 12 October
Rain. High 60°, low 47°.
0.1Grindstone, Tuesday, 13 October
Rain. High 51°, low 43°.
0
Grindstone, Wednesday, 14 October
Clear. High 58°, low 43°.
0.15Grindstone, Thursday, 15 October
Rain. High 64°, low 45°.
0Grindstone, Friday, 16 October
Overcast. High 48°, low 36°.
0Grindstone, Saturday, 17 October
Clear. High 56°, low 30°.
0
Grindstone, Sunday, 18 October
Mostly clear. High 72°, low 48°.
0Grindstone, Monday, 19 October
Clear. High 76°, low 56°.
0Grindstone, Tuesday, 20 October
Mostly clear. High 77°, low 57°.
0Grindstone, Wednesday, 21 October
Clear. High 64°, low 53°.
0Grindstone, Thursday, 22 October
Overcast. High 63°, low 47°.
0Grindstone, Friday, 23 October
Mostly clear. High 64°, low 47°.
0Grindstone, Saturday, 24 October
Mostly clear. High 65°, low 46°.
0Grindstone, Sunday, 25 October
Overcast. High 68°, low 45°.
0.03Grindstone, Monday, 26 October
Climate normal for this date — 60-year average.
0.03Grindstone, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.05Grindstone, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.09
Grindstone, Thursday, 29 October
Climate normal for this date — 60-year average.
0.03Grindstone, Friday, 30 October
Climate normal for this date — 60-year average.
0.03Grindstone, Saturday, 31 October
Climate normal for this date — 60-year average.
0.03Grindstone, Sunday, 1 November
Climate normal for this date — 60-year average.
0.02Grindstone, Monday, 2 November
Climate normal for this date — 60-year average.
0.03Grindstone, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.01Grindstone, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Grindstone, Thursday, 5 November
Climate normal for this date — 60-year average.
0.04Grindstone, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Grindstone, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Grindstone, Sunday, 8 November
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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