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As of 13:32 CDT

Weather in Marion, IL

86°Current weather

Marion, Saturday, 8 August, 13:32

Overcast. Feels like 90°. High 87°, low 72°.

Pressure30.06 inHg
Wind8.5 mph S
Humidity57%
Visibility6.2 mi
Dew point69°
Sun, 0992° / 73°0Clear
92 °Clear

Marion, Sunday, 9 August

Clear. High 92°, low 73°.

Pressure30.03 inHg
Wind12.4 mph S
Humidity48%
Visibility6.2 mi
Dew point67°
Mon, 1098° / 75°0Clear
98 °Clear

Marion, Monday, 10 August

Clear. High 98°, low 75°.

Pressure30.00 inHg
Wind14.9 mph SW
Humidity42%
Visibility6.2 mi
Dew point68°
Tue, 11100° / 77°0Clear
100 °Clear

Marion, Tuesday, 11 August

Clear. High 100°, low 77°.

Pressure29.91 inHg
Wind16 mph SW
Humidity38%
Visibility6.2 mi
Dew point67°
Wed, 1294° / 79°0Overcast
94 °Overcast

Marion, Wednesday, 12 August

Overcast. High 94°, low 79°.

Pressure29.85 inHg
Wind15.3 mph W
Humidity36%
Visibility6.2 mi
Dew point66°
Thu, 1381° / 73°0.57Rain
81 °Rain

Marion, Thursday, 13 August

Rain. High 81°, low 73°.

Pressure29.88 inHg
Wind9.3 mph S
Humidity85%
Visibility—
Dew point73°
Fri, 1482° / 64°0.31Rain
82 °Rain

Marion, Friday, 14 August

Rain. High 82°, low 64°.

Pressure30.09 inHg
Wind11.9 mph NE
Humidity51%
Visibility—
Dew point60°
Sat, 1584° / 58°0.01Light rain
84 °Light rain

Marion, Saturday, 15 August

Light rain. High 84°, low 58°.

Pressure30.18 inHg
Wind9 mph S
Humidity41%
Visibility—
Dew point54°
Sun, 1684° / 68°1.78Heavy rain
84 °Heavy rain

Marion, Sunday, 16 August

Heavy rain. High 84°, low 68°.

Pressure30.12 inHg
Wind12.5 mph S
Humidity97%
Visibility—
Dew point71°
Mon, 1794° / 75°0.08Light rain
94 °Light rain

Marion, Monday, 17 August

Light rain. High 94°, low 75°.

Pressure29.91 inHg
Wind13.8 mph S
Humidity48%
Visibility—
Dew point68°
Tue, 1888° / 71°0.34Rain
88 °Rain

Marion, Tuesday, 18 August

Rain. High 88°, low 71°.

Pressure29.91 inHg
Wind10 mph SW
Humidity57%
Visibility—
Dew point69°
Wed, 1993° / 68°2.4Heavy rain
93 °Heavy rain

Marion, Wednesday, 19 August

Heavy rain. High 93°, low 68°.

Pressure29.91 inHg
Wind22.6 mph NW
Humidity50%
Visibility—
Dew point68°
Thu, 2075° / 60°0Partly cloudy
75 °Partly cloudy

Marion, Thursday, 20 August

Partly cloudy. High 75°, low 60°.

Pressure30.15 inHg
Wind12.8 mph N
Humidity57%
Visibility—
Dew point56°
Fri, 2174° / 53°0Clear
74 °Clear

Marion, Friday, 21 August

Clear. High 74°, low 53°.

Pressure30.21 inHg
Wind7.5 mph NE
Humidity46%
Visibility—
Dew point48°
Sat, 2275° / 53°0Clear
75 °Clear

Marion, Saturday, 22 August

Clear. High 75°, low 53°.

Pressure30.15 inHg
Wind6.3 mph NE
Humidity48%
Visibility—
Dew point50°
Sun, 2378° / 55°0Clear
78 °Clear

Marion, Sunday, 23 August

Clear. High 78°, low 55°.

Pressure30.12 inHg
Wind6.8 mph E
Humidity43%
Visibility—
Dew point50°

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.