Weather in Green Grass, SD
Green Grass, Monday, 12 October, 10:24
Overcast. Feels like 44°. High 52°, low 46°.
Monthly outlook for Green Grass, SD: average high 63°, average low 46.6°. That is 2.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 21 October (77.4°), the coolest 16 October (33.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 October – 21 October | 63.1° | 58.9° | +2.3° |
| 22 October – 31 October | 62.9° | 54.4° | +4.7° |
| 1 November – 10 November | at normal | 48.3° | — |
October records over 66 years
0Green Grass, Tuesday, 13 October
Overcast. High 51°, low 41°.
0.01
Green Grass, Wednesday, 14 October
Light rain. High 57°, low 39°.
0
Green Grass, Thursday, 15 October
Partly cloudy. High 56°, low 45°.
0
Green Grass, Friday, 16 October
Clear. High 55°, low 33°.
0Green Grass, Saturday, 17 October
Clear. High 69°, low 42°.
0Green Grass, Sunday, 18 October
Clear. High 77°, low 50°.
0Green Grass, Monday, 19 October
Clear. High 67°, low 51°.
0
Green Grass, Tuesday, 20 October
Mostly clear. High 70°, low 50°.
0.04Green Grass, Wednesday, 21 October
Light rain. High 77°, low 56°.
0.02Green Grass, Thursday, 22 October
Light rain. High 65°, low 54°.
0.06Green Grass, Friday, 23 October
Light rain. High 62°, low 51°.
0.71Green Grass, Saturday, 24 October
Rain. High 60°, low 48°.
0Green Grass, Sunday, 25 October
Clear. High 59°, low 43°.
0Green Grass, Monday, 26 October
Mostly clear. High 70°, low 47°.
0Green Grass, Tuesday, 27 October
Clear. High 61°, low 51°.
0.06Green Grass, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.11Green Grass, Thursday, 29 October
Climate normal for this date — 60-year average.
0.03Green Grass, Friday, 30 October
Climate normal for this date — 60-year average.
0.03Green Grass, Saturday, 31 October
Climate normal for this date — 60-year average.
0.04Green Grass, Sunday, 1 November
Climate normal for this date — 60-year average.
0.02Green Grass, Monday, 2 November
Climate normal for this date — 60-year average.
0.03Green Grass, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.01Green Grass, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Green Grass, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Green Grass, Friday, 6 November
Climate normal for this date — 60-year average.
0.04Green Grass, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Green Grass, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Green Grass, Monday, 9 November
Climate normal for this date — 60-year average.
0.06Green Grass, 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 Green Grass, 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 Green Grass, 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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