Weather in Charles City, IA
Charles City, Sunday, 9 August, 02:00
Overcast. Feels like 64°. High 82°, low 63°.
Monthly outlook for Charles City, IA: average high 81.2°, average low 65°. That is 1.3° above the climate normal for August. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 22 August (94.9°), the coolest 14 August (55.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 78.2° | 78.8° | -0.3° |
| 19 August – 28 August | 86.1° | 79° | +3.9° |
| 29 August – 7 September | at normal | 77.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Greene (13 mi).
0.06
Charles City, Monday, 10 August
Rain. High 83°, low 69°.
0.11Charles City, Tuesday, 11 August
Rain. High 85°, low 70°.
0
Charles City, Wednesday, 12 August
Partly cloudy. High 81°, low 67°.
0.13Charles City, Thursday, 13 August
Rain. High 67°, low 59°.
0Charles City, Friday, 14 August
Overcast. High 73°, low 56°.
0.01Charles City, Saturday, 15 August
Light rain. High 69°, low 60°.
0.01Charles City, Sunday, 16 August
Light rain. High 79°, low 63°.
0Charles City, Monday, 17 August
Overcast. High 80°, low 59°.
0Charles City, Tuesday, 18 August
Light rain. High 85°, low 64°.
0Charles City, Wednesday, 19 August
Overcast. High 90°, low 69°.
0.01Charles City, Thursday, 20 August
Light rain. High 90°, low 74°.
0Charles City, Friday, 21 August
Overcast. High 83°, low 65°.
0Charles City, Saturday, 22 August
Partly cloudy. High 95°, low 69°.
0.13Charles City, Sunday, 23 August
Rain. High 83°, low 71°.
0.27Charles City, Monday, 24 August
Light rain. High 76°, low 64°.
0.12
Charles City, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.1Charles City, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.17Charles City, Thursday, 27 August
Climate normal for this date — 60-year average.
0.25Charles City, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Charles City, Saturday, 29 August
Climate normal for this date — 60-year average.
0.12Charles City, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Charles City, Monday, 31 August
Climate normal for this date — 60-year average.
0.06Charles City, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.1Charles City, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Charles City, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Charles City, Friday, 4 September
Climate normal for this date — 60-year average.
0.11Charles City, Saturday, 5 September
Climate normal for this date — 60-year average.
0.08Charles City, Sunday, 6 September
Climate normal for this date — 60-year average.
0.09Charles City, 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 Charles City, 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 Charles City, 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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