Weather in Grindstone, SD
Grindstone, Monday, 12 October, 19:32
Partly cloudy. Feels like 43°. High 55°, low 45°.
Monthly outlook for Grindstone, SD: average high 61.5°, average low 44.8°. That is 1.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 20 October (80°), the coolest 16 October (34.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 October – 21 October | 63.7° | 60.5° | +1.7° |
| 22 October – 31 October | 57.8° | 56.2° | +0.9° |
| 1 November – 10 November | at normal | 50.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Quinn (13 mi).
0.27
Grindstone, Tuesday, 13 October
Rain. High 50°, low 41°.
0
Grindstone, Wednesday, 14 October
Partly cloudy. High 57°, low 40°.
0.14Grindstone, Thursday, 15 October
Rain. High 57°, low 46°.
0
Grindstone, Friday, 16 October
Clear. High 56°, low 35°.
0Grindstone, Saturday, 17 October
Clear. High 71°, low 46°.
0Grindstone, Sunday, 18 October
Partly cloudy. High 71°, low 50°.
0Grindstone, Monday, 19 October
Clear. High 68°, low 50°.
0Grindstone, Tuesday, 20 October
Clear. High 80°, low 52°.
0.04Grindstone, Wednesday, 21 October
Light rain. High 72°, low 49°.
0.27Grindstone, Thursday, 22 October
Rain. High 47°, low 41°.
0Grindstone, Friday, 23 October
Clear. High 57°, low 42°.
0Grindstone, Saturday, 24 October
Partly cloudy. High 53°, low 40°.
0
Grindstone, Sunday, 25 October
Overcast. High 52°, low 42°.
0Grindstone, Monday, 26 October
Overcast. High 68°, low 44°.
0Grindstone, Tuesday, 27 October
Clear. High 69°, low 55°.
0.05
Grindstone, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.09Grindstone, 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.
0.04Grindstone, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Grindstone, Tuesday, 10 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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