As of 20:07 CST

Weather in Hornsby, IL

46°

Hornsby, Sunday, 8 November, 20:07

Clear. Feels like 46°. High 65°, low 34°.

Pressure30.09 inHg

Wind0 mph N

Humidity81%

Visibility6.2 mi

Dew point42°

See detailed hourly forecast

Mon, 0967° / 38°

67 °

Hornsby, Monday, 9 November

Clear. High 67°, low 38°.

Pressure30.15 inHg

Wind4.3 mph SW

Humidity44%

Visibility6.2 mi

Dew point41°

Tue, 1066° / 44°

66 °

Hornsby, Tuesday, 10 November

Clear. High 66°, low 44°.

Pressure30.09 inHg

Wind3.7 mph W

Humidity62%

Visibility6.2 mi

Dew point50°

Wed, 1164° / 48°

0.03

64 °

Hornsby, Wednesday, 11 November

Light rain. High 64°, low 48°.

Pressure29.80 inHg

Wind9.6 mph SW

Humidity72%

Visibility5.4 mi

Dew point54°

Thu, 1251° / 39°

51 °

Hornsby, Thursday, 12 November

Overcast. High 51°, low 39°.

Pressure29.94 inHg

Wind13.4 mph NW

Humidity51%

Visibility6.2 mi

Dew point33°

Fri, 1341° / 35°

41 °

Hornsby, Friday, 13 November

Overcast. High 41°, low 35°.

Pressure30.09 inHg

Wind11.9 mph NW

Humidity64%

Visibility—

Dew point30°

Sat, 1448° / 30°

48 °

Hornsby, Saturday, 14 November

Clear. High 48°, low 30°.

Pressure30.21 inHg

Wind6.2 mph NW

Humidity53%

Visibility—

Dew point27°

Sun, 1556° / 36°

56 °

Hornsby, Sunday, 15 November

Mostly clear. High 56°, low 36°.

Pressure30.06 inHg

Wind7.2 mph E

Humidity33%

Visibility—

Dew point23°

Mon, 1659° / 39°

59 °

Hornsby, Monday, 16 November

Partly cloudy. High 59°, low 39°.

Pressure30.15 inHg

Wind10.4 mph SE

Humidity40%

Visibility—

Dew point31°

Tue, 1764° / 49°

64 °

Hornsby, Tuesday, 17 November

Overcast. High 64°, low 49°.

Pressure30.24 inHg

Wind12.5 mph SE

Humidity46%

Visibility—

Dew point39°

Wed, 1859° / 50°

0.11

59 °

Hornsby, Wednesday, 18 November

Light rain. High 59°, low 50°.

Pressure30.18 inHg

Wind9 mph SE

Humidity75%

Visibility—

Dew point48°

Thu, 1960° / 44°

60 °

Hornsby, Thursday, 19 November

Mostly clear. High 60°, low 44°.

Pressure30.21 inHg

Wind8.9 mph NW

Humidity25%

Visibility—

Dew point22°

Fri, 2053° / 42°

53 °

Hornsby, Friday, 20 November

Overcast. High 53°, low 42°.

Pressure30.24 inHg

Wind8.7 mph S

Humidity37%

Visibility—

Dew point25°

Sat, 2154° / 43°

0.24

54 °

Hornsby, Saturday, 21 November

Light rain. High 54°, low 43°.

Pressure30.27 inHg

Wind13.9 mph NE

Humidity61%

Visibility—

Dew point39°

Sun, 2252° / 40°

52 °

Hornsby, Sunday, 22 November

Overcast. High 52°, low 40°.

Pressure30.24 inHg

Wind14.7 mph SE

Humidity48%

Visibility—

Dew point29°

Mon, 2363° / 49°

0.31

63 °

Hornsby, Monday, 23 November

Rain. High 63°, low 49°.

Pressure30.03 inHg

Wind20.3 mph S

Humidity65%

Visibility—

Dew point50°

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.