Weather in St. Charles, IA
St. Charles, Tuesday, 13 October, 13:19
Mostly clear. Feels like 66°. High 70°, low 56°.
0.14
St. Charles, Wednesday, 14 October
Rain. High 66°, low 52°.
0.69St. Charles, Thursday, 15 October
Heavy rain. High 63°, low 54°.
0
St. Charles, Friday, 16 October
Overcast. High 55°, low 46°.
0
St. Charles, Saturday, 17 October
Clear. High 58°, low 36°.
0St. Charles, Sunday, 18 October
Overcast. High 62°, low 46°.
0St. Charles, Monday, 19 October
Overcast. High 63°, low 52°.
0St. Charles, Tuesday, 20 October
Overcast. High 60°, low 54°.
0.19St. Charles, Wednesday, 21 October
Light rain. High 68°, low 58°.
1.14St. Charles, Thursday, 22 October
Rain. High 68°, low 65°.
1.42St. Charles, Friday, 23 October
Heavy rain. High 68°, low 50°.
0St. Charles, Saturday, 24 October
Mostly clear. High 57°, low 44°.
0St. Charles, Sunday, 25 October
Clear. High 62°, low 43°.
0St. Charles, Monday, 26 October
Clear. High 51°, low 41°.
0St. Charles, Tuesday, 27 October
Overcast. High 51°, low 39°.
0.01St. Charles, Wednesday, 28 October
Light rain. High 56°, low 48°.
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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