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As of 23:42 CDT

Weather in Altamont, IL

41°Current weather

Altamont, Saturday, 17 October, 23:42

Clear. Feels like 41°. High 58°, low 40°.

Pressure30.47 inHg
Wind0 mph N
Humidity80%
Visibility6.2 mi
Dew point35°
Sun, 1862° / 39°0Clear
62 °Clear

Altamont, Sunday, 18 October

Clear. High 62°, low 39°.

Pressure30.47 inHg
Wind7.7 mph S
Humidity47%
Visibility6.2 mi
Dew point38°
Mon, 1966° / 42°0Clear
66 °Clear

Altamont, Monday, 19 October

Clear. High 66°, low 42°.

Pressure30.39 inHg
Wind0.5 mph S
Humidity45%
Visibility6.2 mi
Dew point42°
Tue, 2068° / 44°0Clear
68 °Clear

Altamont, Tuesday, 20 October

Clear. High 68°, low 44°.

Pressure30.39 inHg
Wind2.6 mph E
Humidity44%
Visibility6.2 mi
Dew point44°
Wed, 2170° / 45°0Clear
70 °Clear

Altamont, Wednesday, 21 October

Clear. High 70°, low 45°.

Pressure30.30 inHg
Wind2 mph SE
Humidity51%
Visibility6.2 mi
Dew point47°
Thu, 2271° / 48°0Clear
71 °Clear

Altamont, Thursday, 22 October

Clear. High 71°, low 48°.

Pressure30.24 inHg
Wind4.3 mph NE
Humidity45%
Visibility—
Dew point45°
Fri, 2372° / 51°0Clear
72 °Clear

Altamont, Friday, 23 October

Clear. High 72°, low 51°.

Pressure30.30 inHg
Wind7.7 mph SE
Humidity46%
Visibility—
Dew point45°
Sat, 2475° / 53°0Overcast
75 °Overcast

Altamont, Saturday, 24 October

Overcast. High 75°, low 53°.

Pressure30.27 inHg
Wind11.1 mph S
Humidity27%
Visibility—
Dew point34°
Sun, 2568° / 50°0Overcast
68 °Overcast

Altamont, Sunday, 25 October

Overcast. High 68°, low 50°.

Pressure30.36 inHg
Wind12.6 mph N
Humidity45%
Visibility—
Dew point44°
Mon, 2661° / 42°0Overcast
61 °Overcast

Altamont, Monday, 26 October

Overcast. High 61°, low 42°.

Pressure30.39 inHg
Wind9 mph N
Humidity29%
Visibility—
Dew point24°
Tue, 2766° / 43°0Overcast
66 °Overcast

Altamont, Tuesday, 27 October

Overcast. High 66°, low 43°.

Pressure30.33 inHg
Wind7.4 mph S
Humidity28%
Visibility—
Dew point27°
Wed, 2861° / 50°0Overcast
61 °Overcast

Altamont, Wednesday, 28 October

Overcast. High 61°, low 50°.

Pressure30.18 inHg
Wind9.8 mph SE
Humidity48%
Visibility—
Dew point39°
Thu, 2976° / 56°0.02Light rain
76 °Light rain

Altamont, Thursday, 29 October

Light rain. High 76°, low 56°.

Pressure29.91 inHg
Wind19.8 mph SW
Humidity45%
Visibility—
Dew point47°
Fri, 3071° / 61°0.03Light rain
71 °Light rain

Altamont, Friday, 30 October

Light rain. High 71°, low 61°.

Pressure29.94 inHg
Wind10.9 mph SW
Humidity64%
Visibility—
Dew point56°
Sat, 3173° / 56°1.02Heavy rain
73 °Heavy rain

Altamont, Saturday, 31 October

Heavy rain. High 73°, low 56°.

Pressure29.97 inHg
Wind15.1 mph SE
Humidity58%
Visibility—
Dew point55°
Sun, 0173° / 55°0.13Light rain
73 °Light rain

Altamont, Sunday, 1 November

Light rain. High 73°, low 55°.

Pressure29.91 inHg
Wind19.2 mph SW
Humidity43%
Visibility—
Dew point48°

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.