Weather in Green Grass, SD
Green Grass, Sunday, 18 October, 21:40
Partly cloudy. Feels like 42°. High 68°, low 45°.
Monthly outlook for Green Grass, SD: average high 60.7°, average low 42.3°. That is 3.1° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (73.7°), the coolest 31 October (34.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 63.1° | 57.3° | +3.2° |
| 28 October – 6 November | 56.5° | 50.7° | +3.2° |
| 7 November – 16 November | at normal | 44.4° | — |
October records over 66 years
0
Green Grass, Monday, 19 October
Clear. High 65°, low 37°.
0Green Grass, Tuesday, 20 October
Clear. High 68°, low 43°.
0Green Grass, Wednesday, 21 October
Clear. High 66°, low 47°.
0
Green Grass, Thursday, 22 October
Partly cloudy. High 73°, low 52°.
0
Green Grass, Friday, 23 October
Mostly clear. High 74°, low 57°.
0
Green Grass, Saturday, 24 October
Overcast. High 62°, low 45°.
0Green Grass, Sunday, 25 October
Overcast. High 50°, low 36°.
0Green Grass, Monday, 26 October
Mostly clear. High 50°, low 38°.
0Green Grass, Tuesday, 27 October
Clear. High 55°, low 35°.
0Green Grass, Wednesday, 28 October
Partly cloudy. High 68°, low 42°.
0.19
Green Grass, Thursday, 29 October
Rain. High 66°, low 49°.
0Green Grass, Friday, 30 October
Overcast. High 43°, low 35°.
0Green Grass, Saturday, 31 October
Overcast. High 50°, low 35°.
0Green Grass, Sunday, 1 November
Partly cloudy. High 50°, low 37°.
0Green Grass, Monday, 2 November
Overcast. High 62°, low 42°.
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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