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As of 19:54 CDT

Weather in Altona, IL

77°Current weather

Altona, Saturday, 8 August, 19:54

Clear. Feels like 78°. High 84°, low 68°.

Pressure30.00 inHg
Wind5.1 mph SE
Humidity74%
Visibility6.2 mi
Dew point68°
Sun, 0992° / 65°0Clear
92 °Clear

Altona, Sunday, 9 August

Clear. High 92°, low 65°.

Pressure29.88 inHg
Wind16.3 mph S
Humidity70%
Visibility6.2 mi
Dew point74°
Mon, 1088° / 72°0Overcast
88 °Overcast

Altona, Monday, 10 August

Overcast. High 88°, low 72°.

Pressure29.88 inHg
Wind6.4 mph SW
Humidity69%
Visibility6.2 mi
Dew point71°
Tue, 1190° / 75°0Overcast
90 °Overcast

Altona, Tuesday, 11 August

Overcast. High 90°, low 75°.

Pressure29.80 inHg
Wind12.4 mph SW
Humidity72%
Visibility6.2 mi
Dew point69°
Wed, 1282° / 70°0.06Light rain
82 °Light rain

Altona, Wednesday, 12 August

Light rain. High 82°, low 70°.

Pressure29.88 inHg
Wind6.4 mph N
Humidity70%
Visibility6.2 mi
Dew point72°
Thu, 1373° / 63°0.05Light rain
73 °Light rain

Altona, Thursday, 13 August

Light rain. High 73°, low 63°.

Pressure29.97 inHg
Wind10.3 mph E
Humidity79%
Visibility—
Dew point65°
Fri, 1475° / 61°0Clear
75 °Clear

Altona, Friday, 14 August

Clear. High 75°, low 61°.

Pressure30.18 inHg
Wind6.9 mph NE
Humidity63%
Visibility—
Dew point59°
Sat, 1575° / 56°0Overcast
75 °Overcast

Altona, Saturday, 15 August

Overcast. High 75°, low 56°.

Pressure30.30 inHg
Wind8.3 mph SE
Humidity63%
Visibility—
Dew point58°
Sun, 1678° / 58°0Overcast
78 °Overcast

Altona, Sunday, 16 August

Overcast. High 78°, low 58°.

Pressure30.15 inHg
Wind11.5 mph S
Humidity72%
Visibility—
Dew point60°
Mon, 1780° / 66°0.02Light rain
80 °Light rain

Altona, Monday, 17 August

Light rain. High 80°, low 66°.

Pressure29.94 inHg
Wind7.4 mph SE
Humidity85%
Visibility—
Dew point71°
Tue, 1885° / 71°0.02Light rain
85 °Light rain

Altona, Tuesday, 18 August

Light rain. High 85°, low 71°.

Pressure30.00 inHg
Wind7.2 mph SE
Humidity70%
Visibility—
Dew point70°
Wed, 1987° / 68°0.16Light rain
87 °Light rain

Altona, Wednesday, 19 August

Light rain. High 87°, low 68°.

Pressure29.91 inHg
Wind9.1 mph S
Humidity66%
Visibility—
Dew point70°
Thu, 2079° / 66°0.41Rain
79 °Rain

Altona, Thursday, 20 August

Rain. High 79°, low 66°.

Pressure29.91 inHg
Wind11.3 mph N
Humidity70%
Visibility—
Dew point67°
Fri, 2181° / 63°0Clear
81 °Clear

Altona, Friday, 21 August

Clear. High 81°, low 63°.

Pressure29.97 inHg
Wind6.9 mph NE
Humidity60%
Visibility—
Dew point62°
Sat, 2280° / 60°0.02Light rain
80 °Light rain

Altona, Saturday, 22 August

Light rain. High 80°, low 60°.

Pressure29.94 inHg
Wind18.1 mph NE
Humidity60%
Visibility—
Dew point63°
Sun, 2368° / 47°0Mostly clear
68 °Mostly clear

Altona, Sunday, 23 August

Mostly clear. High 68°, low 47°.

Pressure30.21 inHg
Wind12.9 mph E
Humidity50%
Visibility—
Dew point44°

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.