Weather in St. Charles, IA
St. Charles, Saturday, 8 August, 15:56
Clear. Feels like 85°. High 83°, low 61°.
0.01
St. Charles, Sunday, 9 August
Light rain. High 95°, low 70°.
0.07St. Charles, Monday, 10 August
Light rain. High 91°, low 68°.
0.03St. Charles, Tuesday, 11 August
Light rain. High 95°, low 70°.
0.21St. Charles, Wednesday, 12 August
Rain. High 90°, low 72°.
0.53St. Charles, Thursday, 13 August
Rain. High 75°, low 65°.
0
St. Charles, Friday, 14 August
Partly cloudy. High 79°, low 57°.
0
St. Charles, Saturday, 15 August
Overcast. High 80°, low 58°.
0St. Charles, Sunday, 16 August
Overcast. High 83°, low 64°.
0.11St. Charles, Monday, 17 August
Light rain. High 95°, low 69°.
0.01St. Charles, Tuesday, 18 August
Light rain. High 88°, low 70°.
0.16St. Charles, Wednesday, 19 August
Rain. High 92°, low 70°.
0.07St. Charles, Thursday, 20 August
Light rain. High 85°, low 65°.
0St. Charles, Friday, 21 August
Partly cloudy. High 85°, low 62°.
0.08St. Charles, Saturday, 22 August
Light rain. High 85°, low 66°.
0
St. Charles, Sunday, 23 August
Mostly clear. High 75°, low 53°.
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 St. Charles, 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 St. Charles, 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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