Weather in St. Charles, MO
St. Charles, Monday, 19 October, 07:36
Clear. Feels like 44°. High 71°, low 42°.
Monthly outlook for St. Charles, MO: average high 67.2°, average low 48.5°. That is 2.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.9 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 25 October (77.1°), the coolest 30 October (34.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 70.6° | 63.6° | +3.9° |
| 29 October – 7 November | 61.4° | 59.6° | +1° |
| 8 November – 17 November | at normal | 54.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Woodson Terrace (10 mi).
0St. Charles, Tuesday, 20 October
Clear. High 73°, low 43°.
0St. Charles, Wednesday, 21 October
Clear. High 72°, low 50°.
0St. Charles, Thursday, 22 October
Clear. High 72°, low 52°.
0St. Charles, Friday, 23 October
Clear. High 70°, low 52°.
0
St. Charles, Saturday, 24 October
Partly cloudy. High 72°, low 52°.
0
St. Charles, Sunday, 25 October
Overcast. High 77°, low 63°.
0St. Charles, Monday, 26 October
Overcast. High 74°, low 62°.
0St. Charles, Tuesday, 27 October
Overcast. High 73°, low 50°.
0.08
St. Charles, Wednesday, 28 October
Light rain. High 52°, low 41°.
0St. Charles, Thursday, 29 October
Clear. High 51°, low 35°.
0St. Charles, Friday, 30 October
Clear. High 55°, low 35°.
0St. Charles, Saturday, 31 October
Overcast. High 60°, low 40°.
0St. Charles, Sunday, 1 November
Overcast. High 68°, low 49°.
0St. Charles, Monday, 2 November
Overcast. High 72°, low 52°.
0.8St. Charles, Tuesday, 3 November
Rain. High 63°, low 56°.
0.15St. Charles, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.17
St. 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.
0.08
St. 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.
0.09St. Charles, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13St. Charles, Sunday, 15 November
Climate normal for this date — 60-year average.
0.11St. Charles, Monday, 16 November
Climate normal for this date — 60-year average.
0.13St. Charles, Tuesday, 17 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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