Weather in Grenville, SD
Grenville, Friday, 16 October, 01:40
Light rain. Feels like 31°. High 47°, low 38°.
Monthly outlook for Grenville, SD: average high 56.1°, average low 41.9°. That is 2.5° above the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 22 October (76.2°), the coolest 29 October (33.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 61.8° | 53° | +4.8° |
| 26 October – 4 November | 46.8° | 47.9° | -0.6° |
| 5 November – 14 November | at normal | 41.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Enemy Swim (6 mi).
0
Grenville, Saturday, 17 October
Clear. High 59°, low 39°.
0Grenville, Sunday, 18 October
Clear. High 64°, low 46°.
0Grenville, Monday, 19 October
Clear. High 59°, low 45°.
0Grenville, Tuesday, 20 October
Clear. High 63°, low 47°.
0Grenville, Wednesday, 21 October
Clear. High 67°, low 52°.
0
Grenville, Thursday, 22 October
Mostly clear. High 76°, low 56°.
0.03Grenville, Friday, 23 October
Light rain. High 71°, low 59°.
0.01Grenville, Saturday, 24 October
Light rain. High 60°, low 39°.
0
Grenville, Sunday, 25 October
Overcast. High 51°, low 36°.
0.15
Grenville, Monday, 26 October
Snow. High 38°, low 35°.
0.1Grenville, Tuesday, 27 October
Snow. High 36°, low 35°.
0.16Grenville, Wednesday, 28 October
Snow. High 44°, low 35°.
0Grenville, Thursday, 29 October
Mostly clear. High 55°, low 34°.
0Grenville, Friday, 30 October
Clear. High 53°, low 36°.
0Grenville, Saturday, 31 October
Overcast. High 55°, low 40°.
0.06
Grenville, Sunday, 1 November
Climate normal for this date — 60-year average.
0.05Grenville, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Grenville, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Grenville, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.03Grenville, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Grenville, Friday, 6 November
Climate normal for this date — 60-year average.
0.04Grenville, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Grenville, Sunday, 8 November
Climate normal for this date — 60-year average.
0.08Grenville, Monday, 9 November
Climate normal for this date — 60-year average.
0.08Grenville, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.03Grenville, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Grenville, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Grenville, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Grenville, Saturday, 14 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 Grenville, 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 Grenville, 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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