As of 20:57 CDT

Weather in Marion, IL

51°

Marion, Monday, 19 October, 20:57

Clear. Feels like 50°. High 72°, low 40°.

Pressure30.33 inHg

Wind1.2 mph E

Humidity84%

Visibility6.2 mi

Dew point46°

See detailed hourly forecast

Tue, 2073° / 44°

73 °

Marion, Tuesday, 20 October

Light rain. High 73°, low 44°.

Pressure30.36 inHg

Wind2.3 mph NE

Humidity45%

Visibility6.2 mi

Dew point46°

Wed, 2173° / 43°

73 °

Marion, Wednesday, 21 October

Clear. High 73°, low 43°.

Pressure30.27 inHg

Wind1.7 mph N

Humidity49%

Visibility6.2 mi

Dew point49°

Thu, 2273° / 50°

73 °

Marion, Thursday, 22 October

Clear. High 73°, low 50°.

Pressure30.27 inHg

Wind2.7 mph N

Humidity49%

Visibility6.2 mi

Dew point50°

Fri, 2370° / 51°

70 °

Marion, Friday, 23 October

Clear. High 70°, low 51°.

Pressure30.30 inHg

Wind5.7 mph E

Humidity54%

Visibility6.2 mi

Dew point49°

Sat, 2472° / 48°

72 °

Marion, Saturday, 24 October

Overcast. High 72°, low 48°.

Pressure30.36 inHg

Wind6.2 mph E

Humidity44%

Visibility—

Dew point44°

Sun, 2576° / 53°

76 °

Marion, Sunday, 25 October

Overcast. High 76°, low 53°.

Pressure30.42 inHg

Wind6.6 mph S

Humidity40%

Visibility—

Dew point45°

Mon, 2676° / 59°

76 °

Marion, Monday, 26 October

Overcast. High 76°, low 59°.

Pressure30.27 inHg

Wind8.9 mph SW

Humidity29%

Visibility—

Dew point38°

Tue, 2766° / 45°

0.02

66 °

Marion, Tuesday, 27 October

Light rain. High 66°, low 45°.

Pressure30.18 inHg

Wind15.8 mph N

Humidity74%

Visibility—

Dew point52°

Wed, 2847° / 31°

47 °

Marion, Wednesday, 28 October

Clear. High 47°, low 31°.

Pressure30.47 inHg

Wind14.1 mph N

Humidity21%

Visibility—

Dew point6°

Thu, 2954° / 27°

54 °

Marion, Thursday, 29 October

Clear. High 54°, low 27°.

Pressure30.33 inHg

Wind5.3 mph W

Humidity19%

Visibility—

Dew point8°

Fri, 3063° / 35°

63 °

Marion, Friday, 30 October

Clear. High 63°, low 35°.

Pressure30.18 inHg

Wind8.2 mph S

Humidity14%

Visibility—

Dew point8°

Sat, 3169° / 45°

69 °

Marion, Saturday, 31 October

Overcast. High 69°, low 45°.

Pressure30.21 inHg

Wind9.6 mph S

Humidity14%

Visibility—

Dew point12°

Sun, 0174° / 51°

74 °

Marion, Sunday, 1 November

Overcast. High 74°, low 51°.

Pressure30.18 inHg

Wind13.4 mph S

Humidity25%

Visibility—

Dew point30°

Mon, 0266° / 56°

0.46

66 °

Marion, Monday, 2 November

Rain. High 66°, low 56°.

Pressure29.91 inHg

Wind13.9 mph S

Humidity69%

Visibility—

Dew point55°

Tue, 0370° / 49°

70 °

Marion, Tuesday, 3 November

Clear. High 70°, low 49°.

Pressure30.00 inHg

Wind11.9 mph NW

Humidity46%

Visibility—

Dew point44°

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.