As of 07:59 CDT

Weather in Castle Fin, IL

38°

Castle Fin, Tuesday, 20 October, 07:59

Mostly clear. Feels like 34°. High 71°, low 38°.

Pressure30.36 inHg

Wind4.5 mph NE

Humidity86%

Visibility6.2 mi

Dew point34°

See detailed hourly forecast

Wed, 2172° / 41°

72 °

Castle Fin, Wednesday, 21 October

Clear. High 72°, low 41°.

Pressure30.27 inHg

Wind0.9 mph NW

Humidity46%

Visibility6.2 mi

Dew point46°

Thu, 2271° / 45°

71 °

Castle Fin, Thursday, 22 October

Clear. High 71°, low 45°.

Pressure30.27 inHg

Wind5.9 mph NE

Humidity47%

Visibility6.2 mi

Dew point48°

Fri, 2368° / 48°

68 °

Castle Fin, Friday, 23 October

Clear. High 68°, low 48°.

Pressure30.33 inHg

Wind6.2 mph SE

Humidity54%

Visibility6.2 mi

Dew point49°

Sat, 2469° / 46°

69 °

Castle Fin, Saturday, 24 October

Overcast. High 69°, low 46°.

Pressure30.39 inHg

Wind6.8 mph SE

Humidity45%

Visibility—

Dew point43°

Sun, 2574° / 50°

74 °

Castle Fin, Sunday, 25 October

Overcast. High 74°, low 50°.

Pressure30.42 inHg

Wind6.1 mph S

Humidity42%

Visibility—

Dew point45°

Mon, 2674° / 56°

74 °

Castle Fin, Monday, 26 October

Overcast. High 74°, low 56°.

Pressure30.18 inHg

Wind15.2 mph SW

Humidity31%

Visibility—

Dew point38°

Tue, 2758° / 47°

0.03

58 °

Castle Fin, Tuesday, 27 October

Light rain. High 58°, low 47°.

Pressure30.33 inHg

Wind15.7 mph NW

Humidity37%

Visibility—

Dew point29°

Wed, 2846° / 31°

46 °

Castle Fin, Wednesday, 28 October

Clear. High 46°, low 31°.

Pressure30.47 inHg

Wind14 mph N

Humidity27%

Visibility—

Dew point11°

Thu, 2953° / 29°

53 °

Castle Fin, Thursday, 29 October

Overcast. High 53°, low 29°.

Pressure30.24 inHg

Wind11.4 mph SW

Humidity19%

Visibility—

Dew point7°

Fri, 3048° / 41°

0.08

48 °

Castle Fin, Friday, 30 October

Light rain. High 48°, low 41°.

Pressure30.12 inHg

Wind10.5 mph SW

Humidity85%

Visibility—

Dew point40°

Sat, 3159° / 41°

59 °

Castle Fin, Saturday, 31 October

Overcast. High 59°, low 41°.

Pressure30.12 inHg

Wind5.9 mph NW

Humidity59%

Visibility—

Dew point42°

Sun, 0158° / 41°

58 °

Castle Fin, Sunday, 1 November

Light rain. High 58°, low 41°.

Pressure30.24 inHg

Wind8 mph E

Humidity41%

Visibility—

Dew point32°

Mon, 0258° / 45°

0.13

58 °

Castle Fin, Monday, 2 November

Light rain. High 58°, low 45°.

Pressure30.15 inHg

Wind10.7 mph NE

Humidity33%

Visibility—

Dew point27°

Tue, 0356° / 38°

56 °

Castle Fin, Tuesday, 3 November

Overcast. High 56°, low 38°.

Pressure30.15 inHg

Wind8.2 mph N

Humidity30%

Visibility—

Dew point22°

Wed, 0459° / 38°

59 °

Castle Fin, Wednesday, 4 November

Clear. High 59°, low 38°.

Pressure30.09 inHg

Wind7.7 mph W

Humidity28%

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.