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As of 12:14 CDT

Weather in Altona, IL

61°Current weather

Altona, Sunday, 18 October, 12:14

Clear. Feels like 59°. High 61°, low 39°.

Pressure30.42 inHg
Wind12.2 mph S
Humidity51%
Visibility6.2 mi
Dew point42°
Mon, 1965° / 40°0Partly cloudy
65 °Partly cloudy

Altona, Monday, 19 October

Partly cloudy. High 65°, low 40°.

Pressure30.39 inHg
Wind4.5 mph S
Humidity55%
Visibility6.2 mi
Dew point45°
Tue, 2066° / 43°0Clear
66 °Clear

Altona, Tuesday, 20 October

Clear. High 66°, low 43°.

Pressure30.39 inHg
Wind5.1 mph SE
Humidity49%
Visibility6.2 mi
Dew point45°
Wed, 2168° / 46°0Clear
68 °Clear

Altona, Wednesday, 21 October

Clear. High 68°, low 46°.

Pressure30.27 inHg
Wind3.9 mph SW
Humidity53%
Visibility6.2 mi
Dew point49°
Thu, 2270° / 50°0Clear
70 °Clear

Altona, Thursday, 22 October

Clear. High 70°, low 50°.

Pressure30.30 inHg
Wind3.5 mph E
Humidity56%
Visibility6.2 mi
Dew point50°
Fri, 2367° / 50°0Clear
67 °Clear

Altona, Friday, 23 October

Clear. High 67°, low 50°.

Pressure30.30 inHg
Wind9.8 mph SE
Humidity54%
Visibility—
Dew point47°
Sat, 2475° / 56°0Overcast
75 °Overcast

Altona, Saturday, 24 October

Overcast. High 75°, low 56°.

Pressure30.21 inHg
Wind15.4 mph S
Humidity45%
Visibility—
Dew point46°
Sun, 2558° / 51°0.03Light rain
58 °Light rain

Altona, Sunday, 25 October

Light rain. High 58°, low 51°.

Pressure30.45 inHg
Wind11.5 mph N
Humidity40%
Visibility—
Dew point33°
Mon, 2653° / 48°0.15Light rain
53 °Light rain

Altona, Monday, 26 October

Light rain. High 53°, low 48°.

Pressure30.30 inHg
Wind6.3 mph E
Humidity87%
Visibility—
Dew point46°
Tue, 2767° / 52°0Overcast
67 °Overcast

Altona, Tuesday, 27 October

Overcast. High 67°, low 52°.

Pressure30.24 inHg
Wind7.9 mph E
Humidity54%
Visibility—
Dew point46°
Wed, 2864° / 56°0.07Light rain
64 °Light rain

Altona, Wednesday, 28 October

Light rain. High 64°, low 56°.

Pressure29.91 inHg
Wind15.1 mph S
Humidity75%
Visibility—
Dew point55°
Thu, 2972° / 58°0.11Light rain
72 °Light rain

Altona, Thursday, 29 October

Light rain. High 72°, low 58°.

Pressure29.77 inHg
Wind8.5 mph W
Humidity59%
Visibility—
Dew point54°
Fri, 3074° / 54°0.22Rain
74 °Rain

Altona, Friday, 30 October

Rain. High 74°, low 54°.

Pressure29.68 inHg
Wind18 mph S
Humidity67%
Visibility—
Dew point55°
Sat, 3166° / 43°0.19Light rain
66 °Light rain

Altona, Saturday, 31 October

Light rain. High 66°, low 43°.

Pressure29.71 inHg
Wind23.1 mph W
Humidity47%
Visibility—
Dew point29°
Sun, 0149° / 38°0Overcast
49 °Overcast

Altona, Sunday, 1 November

Overcast. High 49°, low 38°.

Pressure30.21 inHg
Wind19.7 mph W
Humidity53%
Visibility—
Dew point30°
Mon, 0257° / 38°0Mostly clear
57 °Mostly clear

Altona, Monday, 2 November

Mostly clear. High 57°, low 38°.

Pressure30.36 inHg
Wind11.5 mph S
Humidity39%
Visibility—
Dew point28°

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 Altona, 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 Altona, 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.