Weather in Petrolia, IL
Petrolia, Saturday, 8 August, 20:43
Clear. Feels like 85°. High 90°, low 73°.
0
Petrolia, Sunday, 9 August
Overcast. High 93°, low 74°.
0
Petrolia, Monday, 10 August
Clear. High 92°, low 75°.
0Petrolia, Tuesday, 11 August
Overcast. High 95°, low 75°.
0.23
Petrolia, Wednesday, 12 August
Rain. High 84°, low 68°.
1.09Petrolia, Thursday, 13 August
Heavy rain. High 83°, low 67°.
0.59Petrolia, Friday, 14 August
Rain. High 73°, low 66°.
0.07Petrolia, Saturday, 15 August
Light rain. High 72°, low 64°.
0.18Petrolia, Sunday, 16 August
Light rain. High 81°, low 63°.
0.07Petrolia, Monday, 17 August
Light rain. High 78°, low 68°.
0Petrolia, Tuesday, 18 August
Overcast. High 82°, low 68°.
0Petrolia, Wednesday, 19 August
Overcast. High 86°, low 70°.
0Petrolia, Thursday, 20 August
Clear. High 75°, low 57°.
0.01Petrolia, Friday, 21 August
Light rain. High 76°, low 56°.
0.06Petrolia, Saturday, 22 August
Light rain. High 85°, low 61°.
0.01Petrolia, Sunday, 23 August
Light rain. High 90°, low 71°.
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 Petrolia, 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 Petrolia, 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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