Weather in Crystal Lawns, IL
Crystal Lawns, Sunday, 9 August, 03:10
Clear. Feels like 64°. High 86°, low 63°.
Monthly outlook for Crystal Lawns, IL: average high 83°, average low 66.4°. That is 1.2° above the climate normal for August. Precipitation is expected on 9 days (about 1.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 22 August (91.8°), the coolest 14 August (58.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80.3° | 80.9° | -0.3° |
| 19 August – 28 August | 87.6° | 80.9° | +3.7° |
| 29 August – 7 September | at normal | 79.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Joliet (3 mi).
0.09
Crystal Lawns, Monday, 10 August
Light rain. High 91°, low 72°.
0.19Crystal Lawns, Tuesday, 11 August
Rain. High 82°, low 70°.
0.04Crystal Lawns, Wednesday, 12 August
Light rain. High 83°, low 69°.
0.13Crystal Lawns, Thursday, 13 August
Rain. High 77°, low 62°.
0.07Crystal Lawns, Friday, 14 August
Light rain. High 75°, low 59°.
0.06Crystal Lawns, Saturday, 15 August
Light rain. High 75°, low 60°.
0.04Crystal Lawns, Sunday, 16 August
Light rain. High 77°, low 62°.
0.02Crystal Lawns, Monday, 17 August
Light rain. High 80°, low 65°.
0
Crystal Lawns, Tuesday, 18 August
Partly cloudy. High 78°, low 64°.
0.09Crystal Lawns, Wednesday, 19 August
Light rain. High 85°, low 66°.
0
Crystal Lawns, Thursday, 20 August
Overcast. High 88°, low 73°.
0
Crystal Lawns, Friday, 21 August
Mostly clear. High 86°, low 72°.
0
Crystal Lawns, Saturday, 22 August
Clear. High 92°, low 69°.
0Crystal Lawns, Sunday, 23 August
Overcast. High 90°, low 71°.
0.18Crystal Lawns, Monday, 24 August
Rain. High 85°, low 68°.
0.11Crystal Lawns, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.17
Crystal Lawns, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12Crystal Lawns, Thursday, 27 August
Climate normal for this date — 60-year average.
0.11Crystal Lawns, Friday, 28 August
Climate normal for this date — 60-year average.
0.12Crystal Lawns, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Crystal Lawns, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Crystal Lawns, Monday, 31 August
Climate normal for this date — 60-year average.
0.11Crystal Lawns, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.06Crystal Lawns, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.08Crystal Lawns, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1Crystal Lawns, Friday, 4 September
Climate normal for this date — 60-year average.
0.06Crystal Lawns, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12Crystal Lawns, Sunday, 6 September
Climate normal for this date — 60-year average.
0.13Crystal Lawns, 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 Crystal Lawns, 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 Crystal Lawns, 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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