Weather in Grand River, IA
Grand River, Thursday, 22 October, 18:45
Clear. Feels like 72°. High 77°, low 50°.
Monthly outlook for Grand River, IA: average high 61.8°, average low 48.4°. That is 2.8° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 22 October (77.1°), the coolest 31 October (37.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 66.9° | 58.4° | +4.7° |
| 1 November – 10 November | 53.2° | 53.3° | -0.1° |
| 11 November – 20 November | at normal | 48.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Kellerton (9 mi).
0
Grand River, Friday, 23 October
Overcast. High 76°, low 53°.
0
Grand River, Saturday, 24 October
Clear. High 74°, low 56°.
0Grand River, Sunday, 25 October
Clear. High 75°, low 55°.
0Grand River, Monday, 26 October
Overcast. High 72°, low 55°.
0Grand River, Tuesday, 27 October
Clear. High 70°, low 55°.
0Grand River, Wednesday, 28 October
Clear. High 64°, low 52°.
0.48
Grand River, Thursday, 29 October
Light rain. High 57°, low 51°.
0.26Grand River, Friday, 30 October
Rain. High 52°, low 42°.
0Grand River, Saturday, 31 October
Overcast. High 51°, low 38°.
0Grand River, Sunday, 1 November
Overcast. High 48°, low 43°.
0Grand River, Monday, 2 November
Overcast. High 56°, low 41°.
0Grand River, Tuesday, 3 November
Overcast. High 58°, low 47°.
0Grand River, Wednesday, 4 November
Overcast. High 57°, low 47°.
0Grand River, Thursday, 5 November
Overcast. High 52°, low 43°.
0.15Grand River, Friday, 6 November
Light rain. High 49°, low 45°.
0.02
Grand River, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Grand River, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1
Grand River, Monday, 9 November
Climate normal for this date — 60-year average.
0.1
Grand River, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Grand River, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Grand River, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Grand River, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Grand River, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Grand River, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Grand River, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Grand River, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.05Grand River, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Grand River, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Grand River, Friday, 20 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 Grand River, IA 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 Grand River, IA 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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