Weather in St. Charles, IA
St. Charles, Friday, 16 October, 08:34
Overcast. Feels like 41°. High 50°, low 40°.
0
St. Charles, Saturday, 17 October
Clear. High 56°, low 34°.
0St. Charles, Sunday, 18 October
Clear. High 62°, low 43°.
0St. Charles, Monday, 19 October
Overcast. High 64°, low 44°.
0St. Charles, Tuesday, 20 October
Clear. High 65°, low 44°.
0.01
St. Charles, Wednesday, 21 October
Light rain. High 69°, low 51°.
0.06St. Charles, Thursday, 22 October
Light rain. High 73°, low 54°.
0
St. Charles, Friday, 23 October
Mostly clear. High 71°, low 51°.
0St. Charles, Saturday, 24 October
Overcast. High 76°, low 57°.
0St. Charles, Sunday, 25 October
Overcast. High 76°, low 60°.
0.04St. Charles, Monday, 26 October
Light rain. High 64°, low 44°.
0.11St. Charles, Tuesday, 27 October
Light rain. High 53°, low 38°.
0.68St. Charles, Wednesday, 28 October
Rain. High 59°, low 46°.
0.05St. Charles, Thursday, 29 October
Light rain. High 69°, low 56°.
0St. Charles, Friday, 30 October
Overcast. High 58°, low 47°.
0.88St. Charles, Saturday, 31 October
Rain. High 52°, 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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