Weather in Grand River, IA
Grand River, Tuesday, 27 October, 02:08
Overcast. Feels like 56°. High 72°, low 55°.
Monthly outlook for Grand River, IA: average high 57°, average low 45.7°. That is 1.6° above the climate normal for October. Precipitation is expected on 7 days (about 3.7 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 28 October (74.6°), the coolest 7 November (29.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 61.6° | 55.6° | +3.3° |
| 6 November – 15 November | 49.4° | 50.6° | -0.7° |
| 16 November – 25 November | at normal | 47.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Kellerton (9 mi).
0.02
Grand River, Wednesday, 28 October
Light rain. High 75°, low 55°.
0.01Grand River, Thursday, 29 October
Light rain. High 68°, low 57°.
0.72Grand River, Friday, 30 October
Rain. High 71°, low 55°.
0.33Grand River, Saturday, 31 October
Light rain. High 61°, low 57°.
0.01Grand River, Sunday, 1 November
Light rain. High 64°, low 54°.
1.29Grand River, Monday, 2 November
Heavy rain. High 56°, low 54°.
0.07Grand River, Tuesday, 3 November
Light rain. High 57°, low 48°.
1.09Grand River, Wednesday, 4 November
Rain. High 48°, low 42°.
0.09Grand River, Thursday, 5 November
Light rain. High 45°, low 35°.
0
Grand River, Friday, 6 November
Partly cloudy. High 41°, low 30°.
0
Grand River, Saturday, 7 November
Mostly clear. High 45°, low 29°.
0Grand River, Sunday, 8 November
Overcast. High 54°, low 34°.
0.01Grand River, Monday, 9 November
Light rain. High 57°, low 47°.
0.02Grand River, Tuesday, 10 November
Light rain. High 55°, low 43°.
0.06Grand River, Wednesday, 11 November
Light rain. High 44°, low 36°.
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.
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.
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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