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As of 21:54 CDT

Weather in Altamont, IL

51°Current weather

Altamont, Friday, 16 October, 21:54

Mostly clear. Feels like 50°. High 63°, low 51°.

Pressure30.36 inHg
Wind8.1 mph NW
Humidity82%
Visibility6.2 mi
Dew point46°
Sat, 1762° / 42°0Clear
62 °Clear

Altamont, Saturday, 17 October

Clear. High 62°, low 42°.

Pressure30.56 inHg
Wind3.6 mph NE
Humidity54%
Visibility6.2 mi
Dew point38°
Sun, 1863° / 40°0Clear
63 °Clear

Altamont, Sunday, 18 October

Clear. High 63°, low 40°.

Pressure30.50 inHg
Wind7.2 mph S
Humidity40%
Visibility6.2 mi
Dew point35°
Mon, 1967° / 41°0Clear
67 °Clear

Altamont, Monday, 19 October

Clear. High 67°, low 41°.

Pressure30.42 inHg
Wind2.6 mph S
Humidity44%
Visibility6.2 mi
Dew point42°
Tue, 2069° / 45°0Clear
69 °Clear

Altamont, Tuesday, 20 October

Clear. High 69°, low 45°.

Pressure30.36 inHg
Wind1.2 mph E
Humidity46%
Visibility6.2 mi
Dew point44°
Wed, 2170° / 46°0Overcast
70 °Overcast

Altamont, Wednesday, 21 October

Overcast. High 70°, low 46°.

Pressure30.27 inHg
Wind3.7 mph E
Humidity41%
Visibility—
Dew point42°
Thu, 2274° / 52°0Mostly clear
74 °Mostly clear

Altamont, Thursday, 22 October

Mostly clear. High 74°, low 52°.

Pressure30.18 inHg
Wind5.1 mph SE
Humidity35%
Visibility—
Dew point41°
Fri, 2376° / 54°0Partly cloudy
76 °Partly cloudy

Altamont, Friday, 23 October

Partly cloudy. High 76°, low 54°.

Pressure30.21 inHg
Wind7.6 mph E
Humidity26%
Visibility—
Dew point35°
Sat, 2477° / 53°0Overcast
77 °Overcast

Altamont, Saturday, 24 October

Overcast. High 77°, low 53°.

Pressure30.21 inHg
Wind7.6 mph S
Humidity21%
Visibility—
Dew point30°
Sun, 2572° / 56°0Overcast
72 °Overcast

Altamont, Sunday, 25 October

Overcast. High 72°, low 56°.

Pressure30.24 inHg
Wind10.7 mph NE
Humidity39%
Visibility—
Dew point43°
Mon, 2671° / 52°0Overcast
71 °Overcast

Altamont, Monday, 26 October

Overcast. High 71°, low 52°.

Pressure30.30 inHg
Wind9.6 mph NE
Humidity40%
Visibility—
Dew point41°
Tue, 2779° / 57°0Overcast
79 °Overcast

Altamont, Tuesday, 27 October

Overcast. High 79°, low 57°.

Pressure30.15 inHg
Wind10.7 mph W
Humidity32%
Visibility—
Dew point42°
Wed, 2863° / 52°0.17Light rain
63 °Light rain

Altamont, Wednesday, 28 October

Light rain. High 63°, low 52°.

Pressure30.09 inHg
Wind8.7 mph N
Humidity80%
Visibility—
Dew point54°
Thu, 2959° / 47°0.63Rain
59 °Rain

Altamont, Thursday, 29 October

Rain. High 59°, low 47°.

Pressure29.97 inHg
Wind15.2 mph SE
Humidity89%
Visibility—
Dew point46°
Fri, 3073° / 53°0.06Light rain
73 °Light rain

Altamont, Friday, 30 October

Light rain. High 73°, low 53°.

Pressure29.59 inHg
Wind18.7 mph W
Humidity52%
Visibility—
Dew point53°
Sat, 3158° / 47°0Partly cloudy
58 °Partly cloudy

Altamont, Saturday, 31 October

Partly cloudy. High 58°, low 47°.

Pressure30.09 inHg
Wind17.1 mph NW
Humidity45%
Visibility—
Dew point36°

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 Altamont, 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 Altamont, 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.