Weather in West Alton, MO
West Alton, Sunday, 9 August, 03:27
Clear. Feels like 77°. High 97°, low 73°.
Monthly outlook for West Alton, MO: average high 96.4°, average low 74.6°. That is 5.9° above the climate normal for August. Precipitation is expected on 7 days (about 1.3 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 20 August (113.4°), the coolest 14 August (65.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 90.4° | 85.8° | +2.6° |
| 19 August – 28 August | 106.4° | 85.9° | +11.4° |
| 29 August – 7 September | at normal | 83.6° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Country Club Hills (11 mi).
0.52
West Alton, Monday, 10 August
Heavy rain. High 100°, low 71°.
0.11West Alton, Tuesday, 11 August
Rain. High 101°, low 73°.
0.13West Alton, Wednesday, 12 August
Light rain. High 93°, low 77°.
0.23West Alton, Thursday, 13 August
Light rain. High 85°, low 72°.
0.13West Alton, Friday, 14 August
Light rain. High 73°, low 66°.
0.12West Alton, Saturday, 15 August
Light rain. High 87°, low 66°.
0
West Alton, Sunday, 16 August
Overcast. High 89°, low 71°.
0.01West Alton, Monday, 17 August
Light rain. High 87°, low 72°.
0.01West Alton, Tuesday, 18 August
Light rain. High 92°, low 70°.
0
West Alton, Wednesday, 19 August
Partly cloudy. High 108°, low 79°.
0
West Alton, Thursday, 20 August
Mostly clear. High 113°, low 84°.
0
West Alton, Friday, 21 August
Clear. High 99°, low 83°.
0.01West Alton, Saturday, 22 August
Light rain. High 111°, low 81°.
0West Alton, Sunday, 23 August
Light rain. High 108°, low 79°.
0.05West Alton, Monday, 24 August
Light rain. High 98°, low 77°.
0.07West Alton, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.14
West Alton, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13West Alton, Thursday, 27 August
Climate normal for this date — 60-year average.
0.08West Alton, Friday, 28 August
Climate normal for this date — 60-year average.
0.07West Alton, Saturday, 29 August
Climate normal for this date — 60-year average.
0.13West Alton, Sunday, 30 August
Climate normal for this date — 60-year average.
0.11West Alton, Monday, 31 August
Climate normal for this date — 60-year average.
0.11West Alton, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.12West Alton, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09West Alton, Thursday, 3 September
Climate normal for this date — 60-year average.
0.12West Alton, Friday, 4 September
Climate normal for this date — 60-year average.
0.04West Alton, Saturday, 5 September
Climate normal for this date — 60-year average.
0.05West Alton, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11West Alton, Monday, 7 September
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 West Alton, 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 West Alton, 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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