Weather in Washington Park, IL
Washington Park, Sunday, 9 August, 06:51
Mostly clear. Feels like 75°. High 97°, low 73°.
Monthly outlook for Washington Park, IL: average high 97.5°, average low 74°. That is 6.3° above the climate normal for August. Precipitation is expected on 6 days (about 0.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 20 August (115°), the coolest 15 August (65.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 91.8° | 86.3° | +3° |
| 19 August – 28 August | 107.1° | 86.5° | +11.5° |
| 29 August – 7 September | at normal | 84.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — St. Louis (8 mi).
0.14
Washington Park, Monday, 10 August
Rain. High 100°, low 71°.
0.04Washington Park, Tuesday, 11 August
Light rain. High 101°, low 71°.
0.04Washington Park, Wednesday, 12 August
Light rain. High 98°, low 77°.
0.25Washington Park, Thursday, 13 August
Light rain. High 87°, low 71°.
0.15Washington Park, Friday, 14 August
Light rain. High 76°, low 66°.
0.09Washington Park, Saturday, 15 August
Light rain. High 89°, low 66°.
0
Washington Park, Sunday, 16 August
Overcast. High 91°, low 71°.
0.04Washington Park, Monday, 17 August
Light rain. High 88°, low 72°.
0.03Washington Park, Tuesday, 18 August
Light rain. High 93°, low 69°.
0
Washington Park, Wednesday, 19 August
Partly cloudy. High 106°, low 77°.
0
Washington Park, Thursday, 20 August
Clear. High 115°, low 82°.
0Washington Park, Friday, 21 August
Clear. High 103°, low 82°.
0Washington Park, Saturday, 22 August
Clear. High 110°, low 80°.
0.02Washington Park, Sunday, 23 August
Light rain. High 109°, low 80°.
0.02Washington Park, Monday, 24 August
Light rain. High 99°, low 77°.
0.06Washington Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.13Washington Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12Washington Park, Thursday, 27 August
Climate normal for this date — 60-year average.
0.08Washington Park, Friday, 28 August
Climate normal for this date — 60-year average.
0.07Washington Park, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Washington Park, Sunday, 30 August
Climate normal for this date — 60-year average.
0.11Washington Park, Monday, 31 August
Climate normal for this date — 60-year average.
0.11
Washington Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.12Washington Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Washington Park, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13Washington Park, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Washington Park, Saturday, 5 September
Climate normal for this date — 60-year average.
0.05Washington Park, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Washington Park, 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 Washington Park, 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 Washington Park, 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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