As of 23:26 CDT

Weather in Castle Fin, IL

45°

Castle Fin, Monday, 19 October, 23:26

Clear. Feels like 45°. High 70°, low 38°.

Pressure30.33 inHg

Wind0.3 mph SE

Humidity87%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

Tue, 2071° / 42°

71 °

Castle Fin, Tuesday, 20 October

Clear. High 71°, low 42°.

Pressure30.36 inHg

Wind2.3 mph E

Humidity39%

Visibility6.2 mi

Dew point42°

Wed, 2172° / 41°

72 °

Castle Fin, Wednesday, 21 October

Clear. High 72°, low 41°.

Pressure30.27 inHg

Wind0.6 mph N

Humidity43%

Visibility6.2 mi

Dew point45°

Thu, 2271° / 49°

71 °

Castle Fin, Thursday, 22 October

Clear. High 71°, low 49°.

Pressure30.27 inHg

Wind4.8 mph NE

Humidity48%

Visibility6.2 mi

Dew point48°

Fri, 2366° / 48°

66 °

Castle Fin, Friday, 23 October

Clear. High 66°, low 48°.

Pressure30.36 inHg

Wind5.8 mph E

Humidity55%

Visibility6.2 mi

Dew point45°

Sat, 2466° / 44°

66 °

Castle Fin, Saturday, 24 October

Clear. High 66°, low 44°.

Pressure30.42 inHg

Wind6.7 mph E

Humidity39%

Visibility—

Dew point37°

Sun, 2574° / 46°

74 °

Castle Fin, Sunday, 25 October

Overcast. High 74°, low 46°.

Pressure30.42 inHg

Wind7.8 mph S

Humidity38%

Visibility—

Dew point41°

Mon, 2673° / 59°

73 °

Castle Fin, Monday, 26 October

Overcast. High 73°, low 59°.

Pressure30.24 inHg

Wind9.1 mph SW

Humidity33%

Visibility—

Dew point40°

Tue, 2757° / 39°

0.13

57 °

Castle Fin, Tuesday, 27 October

Light rain. High 57°, low 39°.

Pressure30.21 inHg

Wind15.9 mph N

Humidity85%

Visibility—

Dew point45°

Wed, 2843° / 30°

43 °

Castle Fin, Wednesday, 28 October

Clear. High 43°, low 30°.

Pressure30.45 inHg

Wind14.3 mph N

Humidity27%

Visibility—

Dew point9°

Thu, 2951° / 28°

51 °

Castle Fin, Thursday, 29 October

Clear. High 51°, low 28°.

Pressure30.30 inHg

Wind9.1 mph W

Humidity24%

Visibility—

Dew point11°

Fri, 3059° / 34°

59 °

Castle Fin, Friday, 30 October

Clear. High 59°, low 34°.

Pressure30.18 inHg

Wind10.5 mph SW

Humidity19%

Visibility—

Dew point12°

Sat, 3165° / 45°

65 °

Castle Fin, Saturday, 31 October

Overcast. High 65°, low 45°.

Pressure30.21 inHg

Wind12 mph S

Humidity14%

Visibility—

Dew point12°

Sun, 0164° / 48°

0.12

64 °

Castle Fin, Sunday, 1 November

Light rain. High 64°, low 48°.

Pressure30.18 inHg

Wind14 mph S

Humidity26%

Visibility—

Dew point27°

Mon, 0258° / 52°

0.82

58 °

Castle Fin, Monday, 2 November

Rain. High 58°, low 52°.

Pressure29.88 inHg

Wind11.8 mph S

Humidity93%

Visibility—

Dew point55°

Tue, 0361° / 47°

0.01

61 °

Castle Fin, Tuesday, 3 November

Light rain. High 61°, low 47°.

Pressure29.97 inHg

Wind13.6 mph NW

Humidity59%

Visibility—

Dew point45°

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.