Weather in St. Peters, MO
St. Peters, Wednesday, 28 October, 11:38
Fog. Feels like 73°. High 76°, low 52°.
Monthly outlook for St. Peters, MO: average high 63.9°, average low 52.7°. That is 3° above the climate normal for October. Precipitation is expected on 6 days (about 2.9 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 29 October (79.8°), the coolest 12 November (41.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 70° | 59.8° | +5.6° |
| 7 November – 16 November | 53.7° | 55.2° | -0.8° |
| 17 November – 26 November | at normal | 51.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — O'Fallon (6 mi).
0
St. Peters, Thursday, 29 October
Clear. High 80°, low 54°.
0
St. Peters, Friday, 30 October
Overcast. High 77°, low 57°.
0St. Peters, Saturday, 31 October
Overcast. High 68°, low 60°.
0St. Peters, Sunday, 1 November
Clear. High 72°, low 58°.
0.01
St. Peters, Monday, 2 November
Light rain. High 69°, low 59°.
0.15St. Peters, Tuesday, 3 November
Light rain. High 68°, low 64°.
0.85St. Peters, Wednesday, 4 November
Heavy rain. High 69°, low 61°.
0.21St. Peters, Thursday, 5 November
Light rain. High 62°, low 57°.
0St. Peters, Friday, 6 November
Overcast. High 60°, low 49°.
0St. Peters, Saturday, 7 November
Overcast. High 57°, low 45°.
0St. Peters, Sunday, 8 November
Overcast. High 57°, low 45°.
0.64St. Peters, Monday, 9 November
Rain. High 54°, low 45°.
0.74St. Peters, Tuesday, 10 November
Rain. High 56°, low 53°.
0.3St. Peters, Wednesday, 11 November
Rain. High 51°, low 43°.
0St. Peters, Thursday, 12 November
Overcast. High 47°, low 41°.
0.05
St. Peters, Friday, 13 November
Climate normal for this date — 60-year average.
0.07St. Peters, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12St. Peters, Sunday, 15 November
Climate normal for this date — 60-year average.
0.11St. Peters, Monday, 16 November
Climate normal for this date — 60-year average.
0.13St. Peters, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.15St. Peters, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.1St. Peters, Thursday, 19 November
Climate normal for this date — 60-year average.
0.13St. Peters, Friday, 20 November
Climate normal for this date — 60-year average.
0.09St. Peters, Saturday, 21 November
Climate normal for this date — 60-year average.
0.09St. Peters, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09St. Peters, Monday, 23 November
Climate normal for this date — 60-year average.
0.13St. Peters, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.13
St. Peters, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.15St. Peters, Thursday, 26 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. Peters, 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. Peters, 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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