As of 04:46 CDT

Weather in Marion, IL

73°

Marion, Wednesday, 14 October, 04:46

Overcast. Feels like 75°. High 82°, low 68°.

Pressure29.97 inHg

Wind2.3 mph SW

Humidity96%

Visibility6.2 mi

Dew point72°

See detailed hourly forecast

Thu, 1587° / 65°

0.73

87 °

Marion, Thursday, 15 October

Heavy rain. High 87°, low 65°.

Pressure30.00 inHg

Wind8 mph SW

Humidity68%

Visibility6.2 mi

Dew point72°

Fri, 1675° / 53°

0.04

75 °

Marion, Friday, 16 October

Light rain. High 75°, low 53°.

Pressure30.15 inHg

Wind17 mph NW

Humidity47%

Visibility6.2 mi

Dew point38°

Sat, 1760° / 47°

60 °

Marion, Saturday, 17 October

Clear. High 60°, low 47°.

Pressure30.53 inHg

Wind8.3 mph NE

Humidity55%

Visibility6.2 mi

Dew point40°

Sun, 1865° / 44°

65 °

Marion, Sunday, 18 October

Clear. High 65°, low 44°.

Pressure30.47 inHg

Wind5.1 mph SE

Humidity42%

Visibility—

Dew point36°

Mon, 1968° / 48°

0.01

68 °

Marion, Monday, 19 October

Light rain. High 68°, low 48°.

Pressure30.42 inHg

Wind5.7 mph SE

Humidity39%

Visibility—

Dew point38°

Tue, 2062° / 55°

0.01

62 °

Marion, Tuesday, 20 October

Light rain. High 62°, low 55°.

Pressure30.27 inHg

Wind6 mph E

Humidity78%

Visibility—

Dew point53°

Wed, 2171° / 53°

71 °

Marion, Wednesday, 21 October

Partly cloudy. High 71°, low 53°.

Pressure30.12 inHg

Wind3.9 mph E

Humidity57%

Visibility—

Dew point53°

Thu, 2274° / 54°

74 °

Marion, Thursday, 22 October

Overcast. High 74°, low 54°.

Pressure30.12 inHg

Wind12.9 mph NE

Humidity45%

Visibility—

Dew point49°

Fri, 2362° / 41°

62 °

Marion, Friday, 23 October

Clear. High 62°, low 41°.

Pressure30.33 inHg

Wind11.5 mph NE

Humidity26%

Visibility—

Dew point23°

Sat, 2462° / 38°

62 °

Marion, Saturday, 24 October

Overcast. High 62°, low 38°.

Pressure30.24 inHg

Wind6.4 mph E

Humidity28%

Visibility—

Dew point23°

Sun, 2555° / 44°

0.08

55 °

Marion, Sunday, 25 October

Light rain. High 55°, low 44°.

Pressure30.06 inHg

Wind7.5 mph NW

Humidity87%

Visibility—

Dew point47°

Mon, 2659° / 36°

59 °

Marion, Monday, 26 October

Clear. High 59°, low 36°.

Pressure30.12 inHg

Wind6.9 mph NW

Humidity28%

Visibility—

Dew point22°

Tue, 2765° / 40°

65 °

Marion, Tuesday, 27 October

Clear. High 65°, low 40°.

Pressure30.00 inHg

Wind5.5 mph W

Humidity32%

Visibility—

Dew point30°

Wed, 2869° / 46°

0.01

69 °

Marion, Wednesday, 28 October

Light rain. High 69°, low 46°.

Pressure29.94 inHg

Wind7.2 mph S

Humidity33%

Visibility—

Dew point34°

Thu, 2962° / 52°

0.01

62 °

Marion, Thursday, 29 October

Light rain. High 62°, low 52°.

Pressure29.85 inHg

Wind8.5 mph E

Humidity54%

Visibility—

Dew point43°

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.