As of 11:54 CDT

Weather in Petrolia, IL

66°

Petrolia, Monday, 19 October, 11:54

Clear. Feels like 64°. High 67°, low 39°.

Pressure30.42 inHg

Wind1.5 mph E

Humidity48%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

Tue, 2071° / 41°

71 °

Petrolia, Tuesday, 20 October

Clear. High 71°, low 41°.

Pressure30.36 inHg

Wind2.8 mph NE

Humidity44%

Visibility6.2 mi

Dew point44°

Wed, 2170° / 44°

70 °

Petrolia, Wednesday, 21 October

Clear. High 70°, low 44°.

Pressure30.30 inHg

Wind1.8 mph NW

Humidity45%

Visibility6.2 mi

Dew point46°

Thu, 2270° / 47°

70 °

Petrolia, Thursday, 22 October

Clear. High 70°, low 47°.

Pressure30.30 inHg

Wind6.5 mph NE

Humidity47%

Visibility6.2 mi

Dew point48°

Fri, 2367° / 48°

67 °

Petrolia, Friday, 23 October

Clear. High 67°, low 48°.

Pressure30.33 inHg

Wind7.1 mph E

Humidity47%

Visibility—

Dew point43°

Sat, 2468° / 45°

68 °

Petrolia, Saturday, 24 October

Partly cloudy. High 68°, low 45°.

Pressure30.39 inHg

Wind7.4 mph E

Humidity35%

Visibility—

Dew point35°

Sun, 2575° / 52°

75 °

Petrolia, Sunday, 25 October

Overcast. High 75°, low 52°.

Pressure30.33 inHg

Wind11.3 mph SW

Humidity31%

Visibility—

Dew point39°

Mon, 2671° / 58°

71 °

Petrolia, Monday, 26 October

Overcast. High 71°, low 58°.

Pressure30.24 inHg

Wind8.2 mph S

Humidity35%

Visibility—

Dew point39°

Tue, 2774° / 57°

0.09

74 °

Petrolia, Tuesday, 27 October

Light rain. High 74°, low 57°.

Pressure30.00 inHg

Wind16.2 mph W

Humidity29%

Visibility—

Dew point38°

Wed, 2848° / 36°

0.06

48 °

Petrolia, Wednesday, 28 October

Light rain. High 48°, low 36°.

Pressure30.33 inHg

Wind18.4 mph NW

Humidity26%

Visibility—

Dew point12°

Thu, 2953° / 30°

53 °

Petrolia, Thursday, 29 October

Clear. High 53°, low 30°.

Pressure30.30 inHg

Wind6.5 mph S

Humidity22%

Visibility—

Dew point10°

Fri, 3056° / 36°

56 °

Petrolia, Friday, 30 October

Overcast. High 56°, low 36°.

Pressure30.09 inHg

Wind10.9 mph S

Humidity21%

Visibility—

Dew point11°

Sat, 3152° / 46°

0.55

52 °

Petrolia, Saturday, 31 October

Rain. High 52°, low 46°.

Pressure30.15 inHg

Wind9.2 mph SE

Humidity86%

Visibility—

Dew point43°

Sun, 0165° / 48°

0.31

65 °

Petrolia, Sunday, 1 November

Rain. High 65°, low 48°.

Pressure29.94 inHg

Wind16.3 mph NW

Humidity65%

Visibility—

Dew point49°

Mon, 0253° / 42°

53 °

Petrolia, Monday, 2 November

Overcast. High 53°, low 42°.

Pressure30.12 inHg

Wind16.6 mph NW

Humidity47%

Visibility—

Dew point31°

Tue, 0349° / 39°

0.01

49 °

Petrolia, Tuesday, 3 November

Light rain. High 49°, low 39°.

Pressure30.00 inHg

Wind6.9 mph N

Humidity61%

Visibility—

Dew point35°

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.