Weather in Green Grass, SD
Green Grass, Sunday, 11 October, 11:07
Overcast. Feels like 54°. High 57°, low 49°.
Monthly outlook for Green Grass, SD: average high 62.7°, average low 46.1°. That is 2.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 20 October (74.8°), the coolest 16 October (34.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 61.9° | 59.3° | +1.4° |
| 21 October – 30 October | 64.1° | 55.1° | +5° |
| 31 October – 9 November | at normal | 49.1° | — |
October records over 66 years
0.04
Green Grass, Monday, 12 October
Light rain. High 56°, low 48°.
0.33Green Grass, Tuesday, 13 October
Rain. High 52°, low 42°.
0.01Green Grass, Wednesday, 14 October
Light rain. High 54°, low 39°.
0.18Green Grass, Thursday, 15 October
Rain. High 61°, low 47°.
0
Green Grass, Friday, 16 October
Clear. High 56°, low 34°.
0Green Grass, Saturday, 17 October
Overcast. High 64°, low 39°.
0Green Grass, Sunday, 18 October
Overcast. High 72°, low 52°.
0Green Grass, Monday, 19 October
Overcast. High 71°, low 50°.
0Green Grass, Tuesday, 20 October
Overcast. High 75°, low 53°.
0Green Grass, Wednesday, 21 October
Clear. High 67°, low 49°.
0Green Grass, Thursday, 22 October
Overcast. High 64°, low 50°.
0
Green Grass, Friday, 23 October
Mostly clear. High 68°, low 47°.
0Green Grass, Saturday, 24 October
Clear. High 71°, low 51°.
0Green Grass, Sunday, 25 October
Mostly clear. High 58°, low 47°.
0Green Grass, Monday, 26 October
Overcast. High 57°, low 38°.
0.02Green Grass, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Green Grass, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.11
Green 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.
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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