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As of 12:01 CDT

Weather in Petrolia, IL

70°Current weather

Petrolia, Wednesday, 21 October, 12:01

Clear. Feels like 68°. High 72°, low 43°.

Pressure30.27 inHg
Wind0 mph N
Humidity43%
Visibility6.2 mi
Dew point46°
Thu, 2274° / 47°0Clear
74 °Clear

Petrolia, Thursday, 22 October

Clear. High 74°, low 47°.

Pressure30.27 inHg
Wind4.4 mph NE
Humidity40%
Visibility6.2 mi
Dew point45°
Fri, 2371° / 49°0Clear
71 °Clear

Petrolia, Friday, 23 October

Clear. High 71°, low 49°.

Pressure30.33 inHg
Wind5.2 mph E
Humidity47%
Visibility6.2 mi
Dew point47°
Sat, 2471° / 48°0Clear
71 °Clear

Petrolia, Saturday, 24 October

Clear. High 71°, low 48°.

Pressure30.39 inHg
Wind5 mph SE
Humidity49%
Visibility6.2 mi
Dew point47°
Sun, 2574° / 48°0Overcast
74 °Overcast

Petrolia, Sunday, 25 October

Overcast. High 74°, low 48°.

Pressure30.39 inHg
Wind3 mph S
Humidity46%
Visibility6.2 mi
Dew point48°
Mon, 2672° / 50°0Overcast
72 °Overcast

Petrolia, Monday, 26 October

Overcast. High 72°, low 50°.

Pressure30.27 inHg
Wind5.7 mph SW
Humidity42%
Visibility—
Dew point45°
Tue, 2771° / 56°0Overcast
71 °Overcast

Petrolia, Tuesday, 27 October

Overcast. High 71°, low 56°.

Pressure30.27 inHg
Wind6.5 mph SE
Humidity43%
Visibility—
Dew point44°
Wed, 2877° / 60°0Partly cloudy
77 °Partly cloudy

Petrolia, Wednesday, 28 October

Partly cloudy. High 77°, low 60°.

Pressure30.15 inHg
Wind13.2 mph SW
Humidity31%
Visibility—
Dew point41°
Thu, 2974° / 58°0.07Light rain
74 °Light rain

Petrolia, Thursday, 29 October

Light rain. High 74°, low 58°.

Pressure30.12 inHg
Wind15.4 mph W
Humidity41%
Visibility—
Dew point47°
Fri, 3066° / 54°0.02Light rain
66 °Light rain

Petrolia, Friday, 30 October

Light rain. High 66°, low 54°.

Pressure30.18 inHg
Wind10.4 mph E
Humidity63%
Visibility—
Dew point51°
Sat, 3179° / 53°0Overcast
79 °Overcast

Petrolia, Saturday, 31 October

Overcast. High 79°, low 53°.

Pressure30.00 inHg
Wind17.6 mph S
Humidity46%
Visibility—
Dew point51°
Sun, 0170° / 60°0.45Rain
70 °Rain

Petrolia, Sunday, 1 November

Rain. High 70°, low 60°.

Pressure30.00 inHg
Wind19.1 mph S
Humidity90%
Visibility—
Dew point58°
Mon, 0263° / 61°1.2Heavy rain
63 °Heavy rain

Petrolia, Monday, 2 November

Heavy rain. High 63°, low 61°.

Pressure29.77 inHg
Wind14 mph S
Humidity98%
Visibility—
Dew point62°
Tue, 0363° / 60°0.21Light rain
63 °Light rain

Petrolia, Tuesday, 3 November

Light rain. High 63°, low 60°.

Pressure29.56 inHg
Wind13 mph NE
Humidity93%
Visibility—
Dew point60°
Wed, 0461° / 50°0.23Rain
61 °Rain

Petrolia, Wednesday, 4 November

Rain. High 61°, low 50°.

Pressure29.38 inHg
Wind15.7 mph SW
Humidity77%
Visibility—
Dew point51°
Thu, 0553° / 49°0.14Light rain
53 °Light rain

Petrolia, Thursday, 5 November

Light rain. High 53°, low 49°.

Pressure29.68 inHg
Wind13.6 mph SW
Humidity84%
Visibility—
Dew point46°

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.