As of 12:35 CDT

Weather in Marion, IL

75°

Marion, Wednesday, 14 October, 12:35

Overcast. Feels like 77°. High 77°, low 69°.

Pressure30.03 inHg

Wind3.4 mph NW

Humidity98%

Visibility6.2 mi

Dew point75°

See detailed hourly forecast

Thu, 1586° / 68°

0.1

86 °

Marion, Thursday, 15 October

Light rain. High 86°, low 68°.

Pressure30.00 inHg

Wind8.7 mph SW

Humidity66%

Visibility6.2 mi

Dew point72°

Fri, 1672° / 53°

0.09

72 °

Marion, Friday, 16 October

Rain. High 72°, low 53°.

Pressure30.18 inHg

Wind17.4 mph NW

Humidity41%

Visibility6.2 mi

Dew point36°

Sat, 1759° / 46°

59 °

Marion, Saturday, 17 October

Clear. High 59°, low 46°.

Pressure30.53 inHg

Wind8.2 mph NE

Humidity53%

Visibility6.2 mi

Dew point39°

Sun, 1865° / 44°

65 °

Marion, Sunday, 18 October

Clear. High 65°, low 44°.

Pressure30.50 inHg

Wind4.2 mph SE

Humidity44%

Visibility6.2 mi

Dew point37°

Mon, 1969° / 48°

69 °

Marion, Monday, 19 October

Clear. High 69°, low 48°.

Pressure30.42 inHg

Wind6.8 mph S

Humidity36%

Visibility—

Dew point37°

Tue, 2078° / 54°

78 °

Marion, Tuesday, 20 October

Overcast. High 78°, low 54°.

Pressure30.24 inHg

Wind6.2 mph S

Humidity39%

Visibility—

Dew point48°

Wed, 2180° / 62°

80 °

Marion, Wednesday, 21 October

Overcast. High 80°, low 62°.

Pressure30.18 inHg

Wind7.6 mph S

Humidity37%

Visibility—

Dew point49°

Thu, 2282° / 60°

0.03

82 °

Marion, Thursday, 22 October

Light rain. High 82°, low 60°.

Pressure30.06 inHg

Wind13.8 mph SW

Humidity36%

Visibility—

Dew point50°

Fri, 2383° / 64°

0.01

83 °

Marion, Friday, 23 October

Light rain. High 83°, low 64°.

Pressure30.12 inHg

Wind9.1 mph SE

Humidity43%

Visibility—

Dew point54°

Sat, 2486° / 60°

0.04

86 °

Marion, Saturday, 24 October

Light rain. High 86°, low 60°.

Pressure30.03 inHg

Wind16.8 mph SW

Humidity37%

Visibility—

Dew point53°

Sun, 2564° / 48°

64 °

Marion, Sunday, 25 October

Overcast. High 64°, low 48°.

Pressure30.42 inHg

Wind13.4 mph N

Humidity20%

Visibility—

Dew point20°

Mon, 2668° / 41°

68 °

Marion, Monday, 26 October

Overcast. High 68°, low 41°.

Pressure30.30 inHg

Wind8.7 mph SW

Humidity19%

Visibility—

Dew point19°

Tue, 2769° / 46°

69 °

Marion, Tuesday, 27 October

Overcast. High 69°, low 46°.

Pressure30.12 inHg

Wind10.8 mph SW

Humidity15%

Visibility—

Dew point17°

Wed, 2878° / 55°

0.1

78 °

Marion, Wednesday, 28 October

Light rain. High 78°, low 55°.

Pressure29.85 inHg

Wind19.5 mph SW

Humidity28%

Visibility—

Dew point38°

Thu, 2965° / 49°

65 °

Marion, Thursday, 29 October

Clear. High 65°, low 49°.

Pressure30.12 inHg

Wind16.5 mph W

Humidity35%

Visibility—

Dew point33°

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 Marion, 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 Marion, 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.