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As of 04:07 CST

Weather in Hornsby, IL

39°Current weather

Hornsby, Wednesday, 11 November, 04:07

Clear. Feels like 36°. High 69°, low 39°.

Pressure29.94 inHg
Wind4.6 mph S
Humidity93%
Visibility6.2 mi
Dew point38°
Thu, 1253° / 39°0Light rain
53 °Light rain

Hornsby, Thursday, 12 November

Light rain. High 53°, low 39°.

Pressure29.97 inHg
Wind14.3 mph NW
Humidity54%
Visibility6.2 mi
Dew point32°
Fri, 1344° / 33°0Overcast
44 °Overcast

Hornsby, Friday, 13 November

Overcast. High 44°, low 33°.

Pressure30.09 inHg
Wind13.2 mph N
Humidity61%
Visibility6.2 mi
Dew point24°
Sat, 1446° / 29°0Clear
46 °Clear

Hornsby, Saturday, 14 November

Clear. High 46°, low 29°.

Pressure30.27 inHg
Wind4.1 mph NW
Humidity57%
Visibility6.2 mi
Dew point25°
Sun, 1551° / 30°0Clear
51 °Clear

Hornsby, Sunday, 15 November

Clear. High 51°, low 30°.

Pressure30.39 inHg
Wind4.2 mph E
Humidity49%
Visibility—
Dew point28°
Mon, 1653° / 32°0Mostly clear
53 °Mostly clear

Hornsby, Monday, 16 November

Mostly clear. High 53°, low 32°.

Pressure30.47 inHg
Wind6.1 mph E
Humidity46%
Visibility—
Dew point29°
Tue, 1753° / 34°0Clear
53 °Clear

Hornsby, Tuesday, 17 November

Clear. High 53°, low 34°.

Pressure30.39 inHg
Wind7 mph SE
Humidity39%
Visibility—
Dew point25°
Wed, 1856° / 35°0Mostly clear
56 °Mostly clear

Hornsby, Wednesday, 18 November

Mostly clear. High 56°, low 35°.

Pressure30.27 inHg
Wind12.1 mph SE
Humidity38%
Visibility—
Dew point26°
Thu, 1958° / 40°0.01Light rain
58 °Light rain

Hornsby, Thursday, 19 November

Light rain. High 58°, low 40°.

Pressure30.09 inHg
Wind13.8 mph S
Humidity50%
Visibility—
Dew point33°
Fri, 2059° / 50°0.19Light rain
59 °Light rain

Hornsby, Friday, 20 November

Light rain. High 59°, low 50°.

Pressure29.94 inHg
Wind15.1 mph SE
Humidity56%
Visibility—
Dew point41°
Sat, 2155° / 44°0.18Light rain
55 °Light rain

Hornsby, Saturday, 21 November

Light rain. High 55°, low 44°.

Pressure29.65 inHg
Wind15.6 mph SW
Humidity71%
Visibility—
Dew point44°
Sun, 2241° / 29°0.08Snow
41 °Snow

Hornsby, Sunday, 22 November

Snow. High 41°, low 29°.

Pressure30.12 inHg
Wind17.2 mph NW
Humidity63%
Visibility—
Dew point25°
Mon, 2328° / 19°0.02Light snow
28 °Light snow

Hornsby, Monday, 23 November

Light snow. High 28°, low 19°.

Pressure30.27 inHg
Wind21.4 mph NW
Humidity62%
Visibility—
Dew point13°
Tue, 2436° / 16°0Clear
36 °Clear

Hornsby, Tuesday, 24 November

Clear. High 36°, low 16°.

Pressure30.39 inHg
Wind11.8 mph S
Humidity24%
Visibility—
Dew point-2°
Wed, 2550° / 29°0Overcast
50 °Overcast

Hornsby, Wednesday, 25 November

Overcast. High 50°, low 29°.

Pressure30.15 inHg
Wind14.4 mph S
Humidity42%
Visibility—
Dew point22°
Thu, 2652° / 37°0Overcast
52 °Overcast

Hornsby, Thursday, 26 November

Overcast. High 52°, low 37°.

Pressure30.15 inHg
Wind11.5 mph S
Humidity57%
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 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.