Weather in St. Charles, MO
St. Charles, Thursday, 15 October, 17:30
Mostly clear. Feels like 80°. High 80°, low 63°.
Monthly outlook for St. Charles, MO: average high 72°, average low 56°. That is 4.4° above the climate normal for October. Precipitation is expected on 3 days (about 1.5 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 15 October (79.7°), the coolest 18 October (44.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 69.9° | 65.3° | +2.6° |
| 25 October – 3 November | 75.3° | 61.3° | +7.8° |
| 4 November – 13 November | at normal | 56.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Woodson Terrace (10 mi).
0.04
St. Charles, Friday, 16 October
Light rain. High 61°, low 53°.
0
St. Charles, Saturday, 17 October
Clear. High 58°, low 45°.
0St. Charles, Sunday, 18 October
Clear. High 62°, low 44°.
0St. Charles, Monday, 19 October
Mostly clear. High 67°, low 45°.
0
St. Charles, Tuesday, 20 October
Overcast. High 69°, low 48°.
0St. Charles, Wednesday, 21 October
Mostly clear. High 74°, low 52°.
0St. Charles, Thursday, 22 October
Overcast. High 77°, low 60°.
0St. Charles, Friday, 23 October
Overcast. High 78°, low 62°.
0St. Charles, Saturday, 24 October
Light rain. High 74°, low 64°.
0
St. Charles, Sunday, 25 October
Partly cloudy. High 78°, low 59°.
0St. Charles, Monday, 26 October
Overcast. High 79°, low 61°.
0St. Charles, Tuesday, 27 October
Overcast. High 73°, low 62°.
0St. Charles, Wednesday, 28 October
Overcast. High 79°, low 65°.
0.03St. Charles, Thursday, 29 October
Light rain. High 79°, low 63°.
1.24St. Charles, Friday, 30 October
Heavy rain. High 63°, low 51°.
0.15
St. Charles, Saturday, 31 October
Climate normal for this date — 60-year average.
0.18St. Charles, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09St. Charles, Monday, 2 November
Climate normal for this date — 60-year average.
0.12St. Charles, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.15St. Charles, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.17St. Charles, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09St. Charles, Friday, 6 November
Climate normal for this date — 60-year average.
0.08St. Charles, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04St. Charles, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1St. Charles, Monday, 9 November
Climate normal for this date — 60-year average.
0.13St. Charles, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.11St. Charles, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.09St. Charles, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06St. Charles, Friday, 13 November
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 St. Charles, MO 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, MO 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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