As of 18:11 CDT

Weather in Castle Fin, IL

62°

Castle Fin, Tuesday, 20 October, 18:11

Clear. Feels like 60°. High 71°, low 43°.

Pressure30.27 inHg

Wind1.4 mph NE

Humidity52%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

Wed, 2173° / 42°

73 °

Castle Fin, Wednesday, 21 October

Clear. High 73°, low 42°.

Pressure30.27 inHg

Wind0.6 mph W

Humidity45%

Visibility6.2 mi

Dew point46°

Thu, 2272° / 45°

72 °

Castle Fin, Thursday, 22 October

Clear. High 72°, low 45°.

Pressure30.27 inHg

Wind4.5 mph NE

Humidity47%

Visibility6.2 mi

Dew point49°

Fri, 2370° / 49°

70 °

Castle Fin, Friday, 23 October

Mostly clear. High 70°, low 49°.

Pressure30.33 inHg

Wind6.4 mph SE

Humidity47%

Visibility6.2 mi

Dew point47°

Sat, 2469° / 49°

69 °

Castle Fin, Saturday, 24 October

Partly cloudy. High 69°, low 49°.

Pressure30.39 inHg

Wind5.7 mph SE

Humidity54%

Visibility6.2 mi

Dew point48°

Sun, 2573° / 51°

73 °

Castle Fin, Sunday, 25 October

Overcast. High 73°, low 51°.

Pressure30.36 inHg

Wind5.7 mph SW

Humidity40%

Visibility—

Dew point45°

Mon, 2674° / 54°

74 °

Castle Fin, Monday, 26 October

Overcast. High 74°, low 54°.

Pressure30.21 inHg

Wind9.4 mph SW

Humidity37%

Visibility—

Dew point43°

Tue, 2768° / 55°

68 °

Castle Fin, Tuesday, 27 October

Overcast. High 68°, low 55°.

Pressure30.18 inHg

Wind9.6 mph N

Humidity43%

Visibility—

Dew point43°

Wed, 2854° / 43°

0.01

54 °

Castle Fin, Wednesday, 28 October

Light rain. High 54°, low 43°.

Pressure30.18 inHg

Wind19 mph W

Humidity68%

Visibility—

Dew point37°

Thu, 2955° / 35°

55 °

Castle Fin, Thursday, 29 October

Clear. High 55°, low 35°.

Pressure30.24 inHg

Wind13.7 mph NW

Humidity32%

Visibility—

Dew point22°

Fri, 3054° / 32°

54 °

Castle Fin, Friday, 30 October

Clear. High 54°, low 32°.

Pressure30.27 inHg

Wind8.2 mph SE

Humidity30%

Visibility—

Dew point19°

Sat, 3160° / 36°

60 °

Castle Fin, Saturday, 31 October

Overcast. High 60°, low 36°.

Pressure30.03 inHg

Wind18.7 mph S

Humidity34%

Visibility—

Dew point28°

Sun, 0164° / 54°

0.07

64 °

Castle Fin, Sunday, 1 November

Light rain. High 64°, low 54°.

Pressure29.91 inHg

Wind18.6 mph S

Humidity83%

Visibility—

Dew point57°

Mon, 0268° / 48°

0.21

68 °

Castle Fin, Monday, 2 November

Rain. High 68°, low 48°.

Pressure30.03 inHg

Wind18.2 mph NW

Humidity56%

Visibility—

Dew point51°

Tue, 0355° / 38°

55 °

Castle Fin, Tuesday, 3 November

Clear. High 55°, low 38°.

Pressure30.47 inHg

Wind10.1 mph N

Humidity21%

Visibility—

Dew point13°

Wed, 0455° / 39°

55 °

Castle Fin, Wednesday, 4 November

Overcast. High 55°, low 39°.

Pressure30.33 inHg

Wind9.5 mph SW

Humidity29%

Visibility—

Dew point22°

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 Castle Fin, 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 Castle Fin, 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.