Weather in Grand River, IA
Grand River, Wednesday, 28 October, 07:26
Mostly clear. Feels like 55°. High 78°, low 56°.
Monthly outlook for Grand River, IA: average high 61.2°, average low 48°. That is 4.2° above the climate normal for October. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 28 October (78.3°), the coolest 7 November (34.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 64.9° | 55.1° | +5.4° |
| 7 November – 16 November | 55° | 50.2° | +2.7° |
| 17 November – 26 November | at normal | 46.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Kellerton (9 mi).
0.02
Grand River, Thursday, 29 October
Light rain. High 69°, low 54°.
0.59Grand River, Friday, 30 October
Heavy rain. High 73°, low 54°.
0.08Grand River, Saturday, 31 October
Light rain. High 68°, low 57°.
0.01Grand River, Sunday, 1 November
Light rain. High 71°, low 55°.
0.7Grand River, Monday, 2 November
Rain. High 68°, low 61°.
0.09Grand River, Tuesday, 3 November
Light rain. High 62°, low 45°.
0
Grand River, Wednesday, 4 November
Mostly clear. High 58°, low 45°.
0.01Grand River, Thursday, 5 November
Light rain. High 53°, low 48°.
0Grand River, Friday, 6 November
Mostly clear. High 50°, low 35°.
0
Grand River, Saturday, 7 November
Clear. High 52°, low 35°.
0
Grand River, Sunday, 8 November
Overcast. High 53°, low 38°.
0.01Grand River, Monday, 9 November
Light rain. High 58°, low 47°.
0Grand River, Tuesday, 10 November
Overcast. High 57°, low 50°.
0Grand River, Wednesday, 11 November
Clear. High 54°, low 45°.
0Grand River, Thursday, 12 November
Overcast. High 56°, low 43°.
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.
0.06
Grand 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.
0.03Grand River, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Grand River, Sunday, 22 November
Climate normal for this date — 60-year average.
0.08Grand River, Monday, 23 November
Climate normal for this date — 60-year average.
0.06Grand River, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.06Grand River, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.1Grand River, Thursday, 26 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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