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As of 15:04 CDT

Weather in Alto Pass, IL

89°Current weather

Alto Pass, Sunday, 9 August, 15:04

Clear. Feels like 102°. High 89°, low 70°.

Pressure29.97 inHg
Wind12.8 mph S
Humidity67%
Visibility6.2 mi
Dew point76°
Mon, 1096° / 74°0Partly cloudy
96 °Partly cloudy

Alto Pass, Monday, 10 August

Partly cloudy. High 96°, low 74°.

Pressure30.00 inHg
Wind14.2 mph SW
Humidity51%
Visibility6.2 mi
Dew point70°
Tue, 1198° / 76°0Clear
98 °Clear

Alto Pass, Tuesday, 11 August

Clear. High 98°, low 76°.

Pressure29.94 inHg
Wind13 mph SW
Humidity43%
Visibility6.2 mi
Dew point69°
Wed, 1297° / 70°0.51Rain
97 °Rain

Alto Pass, Wednesday, 12 August

Rain. High 97°, low 70°.

Pressure29.88 inHg
Wind4 mph SW
Humidity53%
Visibility6.2 mi
Dew point71°
Thu, 1390° / 69°0.07Light rain
90 °Light rain

Alto Pass, Thursday, 13 August

Light rain. High 90°, low 69°.

Pressure29.94 inHg
Wind6.6 mph S
Humidity71%
Visibility6.2 mi
Dew point72°
Fri, 1498° / 75°0Partly cloudy
98 °Partly cloudy

Alto Pass, Friday, 14 August

Partly cloudy. High 98°, low 75°.

Pressure29.94 inHg
Wind11.9 mph S
Humidity39%
Visibility—
Dew point65°
Sat, 15100° / 76°0Clear
100 °Clear

Alto Pass, Saturday, 15 August

Clear. High 100°, low 76°.

Pressure30.03 inHg
Wind12 mph S
Humidity33%
Visibility—
Dew point61°
Sun, 16103° / 78°0.07Light rain
103 °Light rain

Alto Pass, Sunday, 16 August

Light rain. High 103°, low 78°.

Pressure29.97 inHg
Wind10 mph SW
Humidity36%
Visibility—
Dew point63°
Mon, 1798° / 73°0Partly cloudy
98 °Partly cloudy

Alto Pass, Monday, 17 August

Partly cloudy. High 98°, low 73°.

Pressure29.97 inHg
Wind8.8 mph S
Humidity43%
Visibility—
Dew point66°
Tue, 18104° / 76°0Clear
104 °Clear

Alto Pass, Tuesday, 18 August

Clear. High 104°, low 76°.

Pressure29.91 inHg
Wind13.5 mph S
Humidity26%
Visibility—
Dew point57°
Wed, 19104° / 77°0Mostly clear
104 °Mostly clear

Alto Pass, Wednesday, 19 August

Mostly clear. High 104°, low 77°.

Pressure29.97 inHg
Wind12.4 mph E
Humidity27%
Visibility—
Dew point59°
Thu, 20105° / 74°0.02Light rain
105 °Light rain

Alto Pass, Thursday, 20 August

Light rain. High 105°, low 74°.

Pressure29.85 inHg
Wind12.9 mph SW
Humidity26%
Visibility—
Dew point57°
Fri, 21103° / 73°0Clear
103 °Clear

Alto Pass, Friday, 21 August

Clear. High 103°, low 73°.

Pressure29.80 inHg
Wind10.1 mph N
Humidity29%
Visibility—
Dew point58°
Sat, 2291° / 68°0Clear
91 °Clear

Alto Pass, Saturday, 22 August

Clear. High 91°, low 68°.

Pressure29.94 inHg
Wind9.6 mph N
Humidity36%
Visibility—
Dew point56°
Sun, 2398° / 67°0Clear
98 °Clear

Alto Pass, Sunday, 23 August

Clear. High 98°, low 67°.

Pressure29.97 inHg
Wind6.2 mph S
Humidity31%
Visibility—
Dew point55°
Mon, 24101° / 72°0.01Light rain
101 °Light rain

Alto Pass, Monday, 24 August

Light rain. High 101°, low 72°.

Pressure30.00 inHg
Wind10.5 mph S
Humidity26%
Visibility—
Dew point56°

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 Alto Pass, 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 Alto Pass, 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.