Weather in Birch Island, IL
Birch Island, Sunday, 9 August, 17:01
Mostly clear. Feels like 105°. High 93°, low 72°.
Monthly outlook for Birch Island, IL: average high 99.6°, average low 73.5°. That is 8.2° above the climate normal for August. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 17 August (106.1°), the coolest 22 August (63.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 100.2° | 85° | +8.4° |
| 19 August – 28 August | 98.7° | 85.1° | +7.6° |
| 29 August – 7 September | at normal | 82.9° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Elsberry (6 mi).
0Birch Island, Monday, 10 August
Mostly clear. High 100°, low 75°.
0Birch Island, Tuesday, 11 August
Mostly clear. High 104°, low 78°.
0.11
Birch Island, Wednesday, 12 August
Light rain. High 98°, low 72°.
0.22Birch Island, Thursday, 13 August
Rain. High 94°, low 69°.
0
Birch Island, Friday, 14 August
Overcast. High 101°, low 76°.
0Birch Island, Saturday, 15 August
Mostly clear. High 106°, low 80°.
0
Birch Island, Sunday, 16 August
Partly cloudy. High 98°, low 76°.
0.06Birch Island, Monday, 17 August
Light rain. High 106°, low 70°.
0Birch Island, Tuesday, 18 August
Overcast. High 102°, low 83°.
0.17Birch Island, Wednesday, 19 August
Rain. High 98°, low 76°.
0Birch Island, Thursday, 20 August
Overcast. High 104°, low 74°.
0Birch Island, Friday, 21 August
Mostly clear. High 99°, low 73°.
0
Birch Island, Saturday, 22 August
Clear. High 91°, low 64°.
0Birch Island, Sunday, 23 August
Partly cloudy. High 95°, low 68°.
0.07Birch Island, Monday, 24 August
Light rain. High 105°, low 70°.
0.07Birch Island, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.14
Birch Island, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.09Birch Island, Thursday, 27 August
Climate normal for this date — 60-year average.
0.11Birch Island, Friday, 28 August
Climate normal for this date — 60-year average.
0.06Birch Island, Saturday, 29 August
Climate normal for this date — 60-year average.
0.1Birch Island, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09Birch Island, Monday, 31 August
Climate normal for this date — 60-year average.
0.11Birch Island, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.14Birch Island, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.07Birch Island, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Birch Island, Friday, 4 September
Climate normal for this date — 60-year average.
0.04Birch Island, Saturday, 5 September
Climate normal for this date — 60-year average.
0.05Birch Island, Sunday, 6 September
Climate normal for this date — 60-year average.
0.08Birch Island, 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 Birch Island, 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 Birch Island, 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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