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As of 16:09 CDT

Weather in Arnold, IL

86°Current weather

Arnold, Saturday, 8 August, 16:09

Clear. Feels like 90°. High 87°, low 70°.

Pressure30.00 inHg
Wind2.3 mph SW
Humidity58%
Visibility6.2 mi
Dew point69°
Sun, 0994° / 71°0Overcast
94 °Overcast

Arnold, Sunday, 9 August

Overcast. High 94°, low 71°.

Pressure29.91 inHg
Wind15.1 mph S
Humidity61%
Visibility6.2 mi
Dew point73°
Mon, 1098° / 75°0Partly cloudy
98 °Partly cloudy

Arnold, Monday, 10 August

Partly cloudy. High 98°, low 75°.

Pressure29.91 inHg
Wind16.1 mph SW
Humidity46%
Visibility6.2 mi
Dew point69°
Tue, 1194° / 78°0Overcast
94 °Overcast

Arnold, Tuesday, 11 August

Overcast. High 94°, low 78°.

Pressure29.83 inHg
Wind13.7 mph SW
Humidity43%
Visibility6.2 mi
Dew point65°
Wed, 1291° / 74°0.04Light rain
91 °Light rain

Arnold, Wednesday, 12 August

Light rain. High 91°, low 74°.

Pressure29.85 inHg
Wind10.7 mph NE
Humidity58%
Visibility6.2 mi
Dew point72°
Thu, 1374° / 67°0.5Rain
74 °Rain

Arnold, Thursday, 13 August

Rain. High 74°, low 67°.

Pressure29.88 inHg
Wind12.8 mph NE
Humidity93%
Visibility—
Dew point71°
Fri, 1478° / 58°0Clear
78 °Clear

Arnold, Friday, 14 August

Clear. High 78°, low 58°.

Pressure30.18 inHg
Wind10.6 mph NE
Humidity42%
Visibility—
Dew point50°
Sat, 1578° / 57°0Partly cloudy
78 °Partly cloudy

Arnold, Saturday, 15 August

Partly cloudy. High 78°, low 57°.

Pressure30.27 inHg
Wind9.1 mph SE
Humidity45%
Visibility—
Dew point51°
Sun, 1678° / 60°0Overcast
78 °Overcast

Arnold, Sunday, 16 August

Overcast. High 78°, low 60°.

Pressure30.15 inHg
Wind12.9 mph S
Humidity65%
Visibility—
Dew point60°
Mon, 1792° / 69°0.14Light rain
92 °Light rain

Arnold, Monday, 17 August

Light rain. High 92°, low 69°.

Pressure29.91 inHg
Wind14.1 mph S
Humidity58%
Visibility—
Dew point70°
Tue, 1890° / 72°0Overcast
90 °Overcast

Arnold, Tuesday, 18 August

Overcast. High 90°, low 72°.

Pressure30.00 inHg
Wind8.7 mph NE
Humidity53%
Visibility—
Dew point67°
Wed, 1992° / 70°0Mostly clear
92 °Mostly clear

Arnold, Wednesday, 19 August

Mostly clear. High 92°, low 70°.

Pressure29.91 inHg
Wind9.6 mph S
Humidity53%
Visibility—
Dew point68°
Thu, 2087° / 71°0.22Rain
87 °Rain

Arnold, Thursday, 20 August

Rain. High 87°, low 71°.

Pressure29.88 inHg
Wind12.2 mph SW
Humidity56%
Visibility—
Dew point67°
Fri, 2187° / 66°0Partly cloudy
87 °Partly cloudy

Arnold, Friday, 21 August

Partly cloudy. High 87°, low 66°.

Pressure29.94 inHg
Wind10.3 mph NE
Humidity46%
Visibility—
Dew point59°
Sat, 2292° / 63°0.01Light rain
92 °Light rain

Arnold, Saturday, 22 August

Light rain. High 92°, low 63°.

Pressure29.91 inHg
Wind16 mph NE
Humidity39%
Visibility—
Dew point57°
Sun, 2377° / 57°0.03Light rain
77 °Light rain

Arnold, Sunday, 23 August

Light rain. High 77°, low 57°.

Pressure30.15 inHg
Wind12.7 mph NE
Humidity42%
Visibility—
Dew point46°

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 Arnold, 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 Arnold, 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.