Weather in Green Island, IA
Green Island, Sunday, 9 August, 07:42
Clear. Feels like 68°. High 88°, low 64°.
Monthly outlook for Green Island, IA: average high 80.1°, average low 62.6°. That is 0.1° below the climate normal for August. Precipitation is expected on 6 days (about 2.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 11 August (90°), the coolest 23 August (57.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80.4° | 80.4° | +0° |
| 19 August – 28 August | 79.6° | 80.4° | -0.4° |
| 29 August – 7 September | at normal | 78.6° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Goose Lake (13 mi).
0.21
Green Island, Monday, 10 August
Rain. High 88°, low 72°.
0Green Island, Tuesday, 11 August
Light rain. High 90°, low 66°.
0
Green Island, Wednesday, 12 August
Mostly clear. High 85°, low 66°.
0.63Green Island, Thursday, 13 August
Rain. High 71°, low 63°.
0
Green Island, Friday, 14 August
Overcast. High 75°, low 58°.
0.16Green Island, Saturday, 15 August
Light rain. High 74°, low 60°.
0.29Green Island, Sunday, 16 August
Rain. High 75°, low 68°.
0Green Island, Monday, 17 August
Overcast. High 76°, low 59°.
0Green Island, Tuesday, 18 August
Overcast. High 81°, low 59°.
0Green Island, Wednesday, 19 August
Light rain. High 76°, low 63°.
0Green Island, Thursday, 20 August
Overcast. High 79°, low 61°.
0.61Green Island, Friday, 21 August
Heavy rain. High 84°, low 61°.
0.01Green Island, Saturday, 22 August
Light rain. High 79°, low 63°.
0Green Island, Sunday, 23 August
Clear. High 79°, low 57°.
0Green Island, Monday, 24 August
Clear. High 81°, low 60°.
0.13
Green Island, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.17Green Island, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Green Island, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19
Green Island, Friday, 28 August
Climate normal for this date — 60-year average.
0.12Green Island, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Green Island, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Green Island, Monday, 31 August
Climate normal for this date — 60-year average.
0.12Green Island, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.07Green Island, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.13Green Island, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Green Island, Friday, 4 September
Climate normal for this date — 60-year average.
0.09Green Island, Saturday, 5 September
Climate normal for this date — 60-year average.
0.08Green Island, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Green Island, Monday, 7 September
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 Island, 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 Island, 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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