As of 18:24 CDT

Weather in Castle Fin, IL

63°

Castle Fin, Monday, 19 October, 18:24

Clear. Feels like 61°. High 68°, low 38°.

Pressure30.33 inHg

Wind1 mph SE

Humidity57%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Tue, 2071° / 41°

71 °

Castle Fin, Tuesday, 20 October

Clear. High 71°, low 41°.

Pressure30.36 inHg

Wind1.8 mph E

Humidity44%

Visibility6.2 mi

Dew point44°

Wed, 2170° / 40°

70 °

Castle Fin, Wednesday, 21 October

Clear. High 70°, low 40°.

Pressure30.27 inHg

Wind0.5 mph NW

Humidity47%

Visibility6.2 mi

Dew point47°

Thu, 2269° / 48°

69 °

Castle Fin, Thursday, 22 October

Clear. High 69°, low 48°.

Pressure30.30 inHg

Wind7.4 mph NE

Humidity53%

Visibility6.2 mi

Dew point49°

Fri, 2365° / 46°

65 °

Castle Fin, Friday, 23 October

Clear. High 65°, low 46°.

Pressure30.36 inHg

Wind7.2 mph E

Humidity47%

Visibility6.2 mi

Dew point39°

Sat, 2465° / 44°

65 °

Castle Fin, Saturday, 24 October

Partly cloudy. High 65°, low 44°.

Pressure30.42 inHg

Wind8.1 mph E

Humidity38%

Visibility—

Dew point34°

Sun, 2574° / 46°

74 °

Castle Fin, Sunday, 25 October

Overcast. High 74°, low 46°.

Pressure30.36 inHg

Wind11.7 mph SW

Humidity37%

Visibility—

Dew point41°

Mon, 2664° / 58°

64 °

Castle Fin, Monday, 26 October

Overcast. High 64°, low 58°.

Pressure30.30 inHg

Wind8.3 mph SW

Humidity64%

Visibility—

Dew point50°

Tue, 2756° / 45°

0.28

56 °

Castle Fin, Tuesday, 27 October

Light rain. High 56°, low 45°.

Pressure30.30 inHg

Wind11.3 mph N

Humidity85%

Visibility—

Dew point45°

Wed, 2847° / 35°

0.01

47 °

Castle Fin, Wednesday, 28 October

Light rain. High 47°, low 35°.

Pressure30.42 inHg

Wind13 mph N

Humidity49%

Visibility—

Dew point28°

Thu, 2951° / 30°

51 °

Castle Fin, Thursday, 29 October

Clear. High 51°, low 30°.

Pressure30.42 inHg

Wind6.8 mph N

Humidity26%

Visibility—

Dew point13°

Fri, 3058° / 34°

58 °

Castle Fin, Friday, 30 October

Clear. High 58°, low 34°.

Pressure30.33 inHg

Wind11.6 mph SW

Humidity21%

Visibility—

Dew point14°

Sat, 3165° / 40°

65 °

Castle Fin, Saturday, 31 October

Overcast. High 65°, low 40°.

Pressure30.18 inHg

Wind15 mph SW

Humidity17%

Visibility—

Dew point14°

Sun, 0165° / 45°

65 °

Castle Fin, Sunday, 1 November

Overcast. High 65°, low 45°.

Pressure30.15 inHg

Wind10.3 mph SW

Humidity22%

Visibility—

Dew point22°

Mon, 0263° / 47°

63 °

Castle Fin, Monday, 2 November

Overcast. High 63°, low 47°.

Pressure30.09 inHg

Wind12 mph N

Humidity30%

Visibility—

Dew point29°

Tue, 0359° / 43°

59 °

Castle Fin, Tuesday, 3 November

Clear. High 59°, low 43°.

Pressure30.06 inHg

Wind9.7 mph N

Humidity51%

Visibility—

Dew point38°

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.