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As of 18:17 CDT

Weather in Arthur, IL

86°Current weather

Arthur, Saturday, 8 August, 18:17

Partly cloudy. Feels like 99°. High 87°, low 71°.

Pressure29.97 inHg
Wind1 mph NW
Humidity78%
Visibility6.2 mi
Dew point78°
Sun, 0993° / 71°0Overcast
93 °Overcast

Arthur, Sunday, 9 August

Overcast. High 93°, low 71°.

Pressure29.97 inHg
Wind14.1 mph S
Humidity65%
Visibility6.2 mi
Dew point73°
Mon, 1092° / 75°0Partly cloudy
92 °Partly cloudy

Arthur, Monday, 10 August

Partly cloudy. High 92°, low 75°.

Pressure29.94 inHg
Wind13.8 mph SW
Humidity60%
Visibility6.2 mi
Dew point73°
Tue, 1193° / 76°0Overcast
93 °Overcast

Arthur, Tuesday, 11 August

Overcast. High 93°, low 76°.

Pressure29.85 inHg
Wind15.7 mph SW
Humidity54%
Visibility6.2 mi
Dew point71°
Wed, 1287° / 71°0.04Light rain
87 °Light rain

Arthur, Wednesday, 12 August

Light rain. High 87°, low 71°.

Pressure29.83 inHg
Wind7.5 mph N
Humidity71%
Visibility6.2 mi
Dew point74°
Thu, 1376° / 65°0.5Rain
76 °Rain

Arthur, Thursday, 13 August

Rain. High 76°, low 65°.

Pressure29.88 inHg
Wind12.2 mph NE
Humidity81%
Visibility—
Dew point69°
Fri, 1474° / 56°0Clear
74 °Clear

Arthur, Friday, 14 August

Clear. High 74°, low 56°.

Pressure30.15 inHg
Wind11.1 mph NE
Humidity51%
Visibility—
Dew point52°
Sat, 1576° / 53°0Partly cloudy
76 °Partly cloudy

Arthur, Saturday, 15 August

Partly cloudy. High 76°, low 53°.

Pressure30.30 inHg
Wind6.6 mph E
Humidity51%
Visibility—
Dew point52°
Sun, 1679° / 56°0Partly cloudy
79 °Partly cloudy

Arthur, Sunday, 16 August

Partly cloudy. High 79°, low 56°.

Pressure30.21 inHg
Wind11.6 mph S
Humidity52%
Visibility—
Dew point56°
Mon, 1784° / 67°0.03Light rain
84 °Light rain

Arthur, Monday, 17 August

Light rain. High 84°, low 67°.

Pressure29.97 inHg
Wind14.9 mph S
Humidity76%
Visibility—
Dew point71°
Tue, 1884° / 70°0Overcast
84 °Overcast

Arthur, Tuesday, 18 August

Overcast. High 84°, low 70°.

Pressure30.00 inHg
Wind9.8 mph NE
Humidity64%
Visibility—
Dew point69°
Wed, 1988° / 68°0Overcast
88 °Overcast

Arthur, Wednesday, 19 August

Overcast. High 88°, low 68°.

Pressure29.91 inHg
Wind8.5 mph S
Humidity57%
Visibility—
Dew point67°
Thu, 2085° / 70°0.31Rain
85 °Rain

Arthur, Thursday, 20 August

Rain. High 85°, low 70°.

Pressure29.85 inHg
Wind8.8 mph NW
Humidity58%
Visibility—
Dew point67°
Fri, 2182° / 65°0Partly cloudy
82 °Partly cloudy

Arthur, Friday, 21 August

Partly cloudy. High 82°, low 65°.

Pressure29.94 inHg
Wind11.5 mph NE
Humidity54%
Visibility—
Dew point61°
Sat, 2285° / 63°0Clear
85 °Clear

Arthur, Saturday, 22 August

Clear. High 85°, low 63°.

Pressure29.91 inHg
Wind19.7 mph NE
Humidity48%
Visibility—
Dew point60°
Sun, 2372° / 54°0Light rain
72 °Light rain

Arthur, Sunday, 23 August

Light rain. High 72°, low 54°.

Pressure30.15 inHg
Wind14.1 mph E
Humidity42%
Visibility—
Dew point45°

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 Arthur, 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 Arthur, 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.