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As of 21:40 CST

Weather in Hornsby, IL

64°Current weather

Hornsby, Tuesday, 3 November, 21:40

Light rain. Feels like 65°. High 69°, low 64°.

Pressure29.74 inHg
Wind18.4 mph S
Humidity94%
Visibility6.2 mi
Dew point63°
Wed, 0463° / 54°0.28Rain
63 °Rain

Hornsby, Wednesday, 4 November

Rain. High 63°, low 54°.

Pressure29.80 inHg
Wind13.9 mph W
Humidity62%
Visibility6.2 mi
Dew point47°
Thu, 0562° / 49°0Clear
62 °Clear

Hornsby, Thursday, 5 November

Clear. High 62°, low 49°.

Pressure29.85 inHg
Wind11.4 mph W
Humidity53%
Visibility6.2 mi
Dew point43°
Fri, 0654° / 43°0Overcast
54 °Overcast

Hornsby, Friday, 6 November

Overcast. High 54°, low 43°.

Pressure30.15 inHg
Wind11.1 mph N
Humidity58%
Visibility6.2 mi
Dew point38°
Sat, 0751° / 34°0Overcast
51 °Overcast

Hornsby, Saturday, 7 November

Overcast. High 51°, low 34°.

Pressure30.24 inHg
Wind3.6 mph W
Humidity49%
Visibility6.2 mi
Dew point30°
Sun, 0863° / 39°0Mostly clear
63 °Mostly clear

Hornsby, Sunday, 8 November

Mostly clear. High 63°, low 39°.

Pressure30.12 inHg
Wind8.1 mph W
Humidity58%
Visibility—
Dew point42°
Mon, 0963° / 39°0Clear
63 °Clear

Hornsby, Monday, 9 November

Clear. High 63°, low 39°.

Pressure30.18 inHg
Wind9.3 mph SW
Humidity35%
Visibility—
Dew point31°
Tue, 1062° / 42°0Overcast
62 °Overcast

Hornsby, Tuesday, 10 November

Overcast. High 62°, low 42°.

Pressure30.12 inHg
Wind8.1 mph W
Humidity42%
Visibility—
Dew point34°
Wed, 1160° / 46°0Overcast
60 °Overcast

Hornsby, Wednesday, 11 November

Overcast. High 60°, low 46°.

Pressure30.15 inHg
Wind7.3 mph NE
Humidity40%
Visibility—
Dew point33°
Thu, 1257° / 46°0Overcast
57 °Overcast

Hornsby, Thursday, 12 November

Overcast. High 57°, low 46°.

Pressure30.09 inHg
Wind6.6 mph NE
Humidity38%
Visibility—
Dew point30°
Fri, 1364° / 43°0Mostly clear
64 °Mostly clear

Hornsby, Friday, 13 November

Mostly clear. High 64°, low 43°.

Pressure29.94 inHg
Wind9.5 mph W
Humidity53%
Visibility—
Dew point42°
Sat, 1462° / 46°0Clear
62 °Clear

Hornsby, Saturday, 14 November

Clear. High 62°, low 46°.

Pressure30.00 inHg
Wind13.4 mph NE
Humidity59%
Visibility—
Dew point45°
Sun, 1551° / 35°0Clear
51 °Clear

Hornsby, Sunday, 15 November

Clear. High 51°, low 35°.

Pressure30.36 inHg
Wind11.6 mph NE
Humidity28%
Visibility—
Dew point16°
Mon, 1654° / 32°0Clear
54 °Clear

Hornsby, Monday, 16 November

Clear. High 54°, low 32°.

Pressure30.39 inHg
Wind9.4 mph SE
Humidity29%
Visibility—
Dew point18°
Tue, 1759° / 35°0Partly cloudy
59 °Partly cloudy

Hornsby, Tuesday, 17 November

Partly cloudy. High 59°, low 35°.

Pressure30.39 inHg
Wind10.3 mph S
Humidity31%
Visibility—
Dew point23°
Wed, 1857° / 41°0Overcast
57 °Overcast

Hornsby, Wednesday, 18 November

Overcast. High 57°, low 41°.

Pressure30.39 inHg
Wind10.8 mph SE
Humidity33%
Visibility—
Dew point26°

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 Hornsby, 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 Hornsby, 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.