Weather in Grenville, SD
Grenville, Sunday, 11 October, 10:30
Overcast. Feels like 62°. High 69°, low 49°.
Monthly outlook for Grenville, SD: average high 61.7°, average low 45.6°. That is 4.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 18 October (71.9°), the coolest 17 October (33.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 61.1° | 54.8° | +3.5° |
| 21 October – 30 October | 62.8° | 51° | +6.6° |
| 31 October – 9 November | at normal | 45° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Enemy Swim (6 mi).
0.11
Grenville, Monday, 12 October
Rain. High 68°, low 46°.
0.05Grenville, Tuesday, 13 October
Light rain. High 51°, low 45°.
0
Grenville, Wednesday, 14 October
Partly cloudy. High 54°, low 44°.
0.04Grenville, Thursday, 15 October
Light rain. High 55°, low 47°.
0
Grenville, Friday, 16 October
Clear. High 53°, low 43°.
0Grenville, Saturday, 17 October
Overcast. High 53°, low 33°.
0Grenville, Sunday, 18 October
Overcast. High 72°, low 44°.
0Grenville, Monday, 19 October
Partly cloudy. High 68°, low 45°.
0Grenville, Tuesday, 20 October
Overcast. High 68°, low 49°.
0Grenville, Wednesday, 21 October
Clear. High 67°, low 50°.
0.05Grenville, Thursday, 22 October
Light rain. High 65°, low 49°.
0.01Grenville, Friday, 23 October
Light rain. High 68°, low 48°.
0
Grenville, Saturday, 24 October
Mostly clear. High 71°, low 50°.
0Grenville, Sunday, 25 October
Overcast. High 56°, low 45°.
0Grenville, Monday, 26 October
Overcast. High 50°, low 41°.
0.06Grenville, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.02Grenville, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.07Grenville, Thursday, 29 October
Climate normal for this date — 60-year average.
0.09Grenville, Friday, 30 October
Climate normal for this date — 60-year average.
0.08Grenville, Saturday, 31 October
Climate normal for this date — 60-year average.
0.06Grenville, 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.
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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