Weather in Columbia, IL
Columbia, Saturday, 8 August, 17:43
Clear. Feels like 102°. High 90°, low 70°.
Monthly outlook for Columbia, IL: average high 88.9°, average low 70.1°. That is 1.5° above the climate normal for August. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 11 August (103.8°), the coolest 15 August (57.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 90.6° | 86.2° | +2.4° |
| 18 August – 27 August | 86.1° | 86.5° | -0.2° |
| 28 August – 6 September | at normal | 84.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Bella Villa (7 mi).
0
Columbia, Sunday, 9 August
Overcast. High 96°, low 73°.
0Columbia, Monday, 10 August
Clear. High 101°, low 75°.
0.02
Columbia, Tuesday, 11 August
Light rain. High 104°, low 76°.
0.03Columbia, Wednesday, 12 August
Light rain. High 89°, low 75°.
0.52Columbia, Thursday, 13 August
Rain. High 84°, low 72°.
0.02Columbia, Friday, 14 August
Light rain. High 79°, low 65°.
0Columbia, Saturday, 15 August
Overcast. High 81°, low 57°.
0.09Columbia, Sunday, 16 August
Light rain. High 82°, low 62°.
0.3Columbia, Monday, 17 August
Rain. High 100°, low 73°.
0Columbia, Tuesday, 18 August
Overcast. High 90°, low 76°.
0
Columbia, Wednesday, 19 August
Partly cloudy. High 96°, low 73°.
0.24Columbia, Thursday, 20 August
Rain. High 87°, low 74°.
0.05Columbia, Friday, 21 August
Light rain. High 82°, low 71°.
0Columbia, Saturday, 22 August
Overcast. High 87°, low 67°.
0.02Columbia, Sunday, 23 August
Light rain. High 74°, low 63°.
0.08Columbia, Monday, 24 August
Climate normal for this date — 60-year average.
0.07Columbia, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.11Columbia, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.1Columbia, Thursday, 27 August
Climate normal for this date — 60-year average.
0.09Columbia, Friday, 28 August
Climate normal for this date — 60-year average.
0.07Columbia, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Columbia, Sunday, 30 August
Climate normal for this date — 60-year average.
0.1Columbia, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Columbia, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11
Columbia, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Columbia, Thursday, 3 September
Climate normal for this date — 60-year average.
0.14Columbia, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Columbia, Saturday, 5 September
Climate normal for this date — 60-year average.
0.04
Columbia, Sunday, 6 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 Columbia, IL 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 Columbia, IL 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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