Weather in Marquette Heights, IL
Marquette Heights, Sunday, 9 August, 06:32
Overcast. Feels like 70°. High 92°, low 68°.
Monthly outlook for Marquette Heights, IL: average high 88.8°, average low 69.7°. That is 4.1° above the climate normal for August. Precipitation is expected on 7 days (about 2.4 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 22 August (104.3°), the coolest 15 August (61.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 84.6° | 81.6° | +1.7° |
| 19 August – 28 August | 95.9° | 81.7° | +7.9° |
| 29 August – 7 September | at normal | 80° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Peoria (9 mi).
0Marquette Heights, Monday, 10 August
Overcast. High 96°, low 76°.
0.06
Marquette Heights, Tuesday, 11 August
Light rain. High 98°, low 70°.
0.7Marquette Heights, Wednesday, 12 August
Heavy rain. High 85°, low 73°.
0.07Marquette Heights, Thursday, 13 August
Light rain. High 81°, low 65°.
1.07Marquette Heights, Friday, 14 August
Heavy rain. High 69°, low 62°.
0.07Marquette Heights, Saturday, 15 August
Light rain. High 76°, low 61°.
0.02Marquette Heights, Sunday, 16 August
Light rain. High 81°, low 66°.
0
Marquette Heights, Monday, 17 August
Partly cloudy. High 83°, low 67°.
0
Marquette Heights, Tuesday, 18 August
Mostly clear. High 84°, low 67°.
0Marquette Heights, Wednesday, 19 August
Overcast. High 100°, low 73°.
0Marquette Heights, Thursday, 20 August
Overcast. High 101°, low 77°.
0Marquette Heights, Friday, 21 August
Mostly clear. High 91°, low 75°.
0.16Marquette Heights, Saturday, 22 August
Rain. High 104°, low 72°.
0.03Marquette Heights, Sunday, 23 August
Light rain. High 97°, low 76°.
0.18Marquette Heights, Monday, 24 August
Light rain. High 83°, low 69°.
0.1
Marquette Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.14Marquette Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.09Marquette Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
0.12Marquette Heights, Friday, 28 August
Climate normal for this date — 60-year average.
0.11Marquette Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Marquette Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
0.08Marquette Heights, Monday, 31 August
Climate normal for this date — 60-year average.
0.17Marquette Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.06Marquette Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Marquette Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Marquette Heights, Friday, 4 September
Climate normal for this date — 60-year average.
0.04Marquette Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
0.1Marquette Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Marquette Heights, 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 Marquette Heights, 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 Marquette Heights, 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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