Weather in Green Grass, SD
Green Grass, Sunday, 18 October, 16:09
Clear. Feels like 65°. High 67°, low 43°.
Monthly outlook for Green Grass, SD: average high 59.2°, average low 42.1°. That is 2.3° above the climate normal for October. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (77.3°), the coolest 2 November (23.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 62.5° | 57.3° | +2.9° |
| 28 October – 6 November | 53.9° | 50.7° | +1.8° |
| 7 November – 16 November | at normal | 44.4° | — |
October records over 66 years
0Green Grass, Monday, 19 October
Clear. High 63°, low 36°.
0Green Grass, Tuesday, 20 October
Clear. High 67°, low 43°.
0
Green Grass, Wednesday, 21 October
Overcast. High 66°, low 47°.
0Green Grass, Thursday, 22 October
Overcast. High 69°, low 51°.
0.02
Green Grass, Friday, 23 October
Light rain. High 77°, low 59°.
0Green Grass, Saturday, 24 October
Clear. High 54°, low 44°.
0Green Grass, Sunday, 25 October
Clear. High 59°, low 37°.
0.05Green Grass, Monday, 26 October
Light rain. High 49°, low 44°.
0.01Green Grass, Tuesday, 27 October
Light rain. High 52°, low 43°.
0Green Grass, Wednesday, 28 October
Overcast. High 67°, low 50°.
0Green Grass, Thursday, 29 October
Clear. High 60°, low 44°.
0
Green Grass, Friday, 30 October
Mostly clear. High 59°, low 40°.
0Green Grass, Saturday, 31 October
Mostly clear. High 60°, low 44°.
0.93
Green Grass, Sunday, 1 November
Snow. High 43°, low 25°.
0
Green Grass, Monday, 2 November
Partly cloudy. High 34°, low 23°.
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.
0.01Green Grass, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Green Grass, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Green Grass, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Green Grass, Saturday, 14 November
Climate normal for this date — 60-year average.
0.02Green Grass, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Green Grass, Monday, 16 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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