Weather in Green Castle, IA
Green Castle, Friday, 23 October, 00:25
Clear. Feels like 56°. High 74°, low 53°.
Monthly outlook for Green Castle, IA: average high 62.8°, average low 48.9°. That is 4.2° above the climate normal for October. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 24 October (74.6°), the coolest 5 November (38.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 66.6° | 57° | +5.4° |
| 2 November – 11 November | 56.5° | 51.5° | +2.8° |
| 12 November – 21 November | at normal | 47.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Mitchellville (8 mi).
0
Green Castle, Saturday, 24 October
Clear. High 75°, low 54°.
0
Green Castle, Sunday, 25 October
Partly cloudy. High 72°, low 54°.
0
Green Castle, Monday, 26 October
Overcast. High 70°, low 54°.
0.06
Green Castle, Tuesday, 27 October
Light rain. High 71°, low 55°.
0.02Green Castle, Wednesday, 28 October
Light rain. High 71°, low 55°.
0.8Green Castle, Thursday, 29 October
Rain. High 61°, low 49°.
0.31Green Castle, Friday, 30 October
Rain. High 55°, low 49°.
0.94Green Castle, Saturday, 31 October
Rain. High 59°, low 55°.
0.03Green Castle, Sunday, 1 November
Light rain. High 59°, low 46°.
0Green Castle, Monday, 2 November
Overcast. High 60°, low 46°.
0Green Castle, Tuesday, 3 November
Overcast. High 49°, low 39°.
0Green Castle, Wednesday, 4 November
Partly cloudy. High 52°, low 42°.
0Green Castle, Thursday, 5 November
Overcast. High 57°, low 38°.
0Green Castle, Friday, 6 November
Clear. High 65°, low 47°.
0Green Castle, Saturday, 7 November
Overcast. High 56°, low 45°.
0.04Green Castle, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Green Castle, Monday, 9 November
Climate normal for this date — 60-year average.
0.08Green Castle, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Green Castle, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Green Castle, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Green Castle, Friday, 13 November
Climate normal for this date — 60-year average.
0.03
Green Castle, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Green Castle, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Green Castle, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Green Castle, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Green Castle, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Green Castle, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Green Castle, Friday, 20 November
Climate normal for this date — 60-year average.
0.04Green Castle, Saturday, 21 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 Green Castle, 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 Green Castle, 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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