Weather in South Freeport, IL
South Freeport, Sunday, 9 August, 06:12
Partly cloudy. Feels like 64°. High 82°, low 63°.
Monthly outlook for South Freeport, IL: average high 81.9°, average low 65.6°. That is 1.2° above the climate normal for August. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 20 August (93.2°), the coolest 14 August (56.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 78.7° | 79.9° | -0.6° |
| 19 August – 28 August | 87.3° | 79.9° | +4.1° |
| 29 August – 7 September | at normal | 78° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Freeport (5 mi).
0.2
South Freeport, Monday, 10 August
Rain. High 87°, low 71°.
0.07South Freeport, Tuesday, 11 August
Light rain. High 82°, low 70°.
0
South Freeport, Wednesday, 12 August
Overcast. High 82°, low 67°.
0.01South Freeport, Thursday, 13 August
Light rain. High 74°, low 61°.
0South Freeport, Friday, 14 August
Overcast. High 74°, low 57°.
0.01South Freeport, Saturday, 15 August
Light rain. High 75°, low 59°.
0.04South Freeport, Sunday, 16 August
Light rain. High 74°, low 63°.
0South Freeport, Monday, 17 August
Overcast. High 79°, low 64°.
0.02South Freeport, Tuesday, 18 August
Light rain. High 78°, low 62°.
0South Freeport, Wednesday, 19 August
Overcast. High 87°, low 68°.
0South Freeport, Thursday, 20 August
Overcast. High 93°, low 77°.
0
South Freeport, Friday, 21 August
Clear. High 86°, low 70°.
0South Freeport, Saturday, 22 August
Clear. High 90°, low 65°.
0.01South Freeport, Sunday, 23 August
Light rain. High 88°, low 70°.
0.1South Freeport, Monday, 24 August
Light rain. High 80°, low 64°.
0.1South Freeport, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.18
South Freeport, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11South Freeport, Thursday, 27 August
Climate normal for this date — 60-year average.
0.17South Freeport, Friday, 28 August
Climate normal for this date — 60-year average.
0.16South Freeport, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07South Freeport, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07South Freeport, Monday, 31 August
Climate normal for this date — 60-year average.
0.1South Freeport, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.06South Freeport, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.12South Freeport, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1South Freeport, Friday, 4 September
Climate normal for this date — 60-year average.
0.08South Freeport, Saturday, 5 September
Climate normal for this date — 60-year average.
0.09South Freeport, Sunday, 6 September
Climate normal for this date — 60-year average.
0.13South Freeport, 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 South Freeport, 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 South Freeport, 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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