As of 16:02 CDT

Weather in Hermon, IL

80°

Hermon, Thursday, 8 October, 16:02

Clear. Feels like 80°. High 80°, low 49°.

Pressure30.06 inHg

Wind1.4 mph W

Humidity39%

Visibility6.2 mi

Dew point52°

See detailed hourly forecast

Fri, 0983° / 53°

0.01

83 °

Hermon, Friday, 9 October

Light rain. High 83°, low 53°.

Pressure30.06 inHg

Wind7.5 mph S

Humidity48%

Visibility6.2 mi

Dew point53°

Sat, 1077° / 57°

77 °

Hermon, Saturday, 10 October

Overcast. High 77°, low 57°.

Pressure30.06 inHg

Wind6.4 mph S

Humidity57%

Visibility6.2 mi

Dew point57°

Sun, 1177° / 53°

77 °

Hermon, Sunday, 11 October

Clear. High 77°, low 53°.

Pressure29.97 inHg

Wind1.4 mph S

Humidity61%

Visibility6.2 mi

Dew point57°

Mon, 1284° / 61°

84 °

Hermon, Monday, 12 October

Overcast. High 84°, low 61°.

Pressure29.85 inHg

Wind10 mph SW

Humidity54%

Visibility6.2 mi

Dew point62°

Tue, 1371° / 61°

71 °

Hermon, Tuesday, 13 October

Overcast. High 71°, low 61°.

Pressure29.94 inHg

Wind11.4 mph NE

Humidity74%

Visibility—

Dew point61°

Wed, 1470° / 57°

0.84

70 °

Hermon, Wednesday, 14 October

Rain. High 70°, low 57°.

Pressure29.91 inHg

Wind15 mph SE

Humidity94%

Visibility—

Dew point58°

Thu, 1572° / 67°

0.81

72 °

Hermon, Thursday, 15 October

Rain. High 72°, low 67°.

Pressure30.00 inHg

Wind10.6 mph S

Humidity83%

Visibility—

Dew point63°

Fri, 1665° / 50°

1.5

65 °

Hermon, Friday, 16 October

Heavy rain. High 65°, low 50°.

Pressure30.33 inHg

Wind15 mph N

Humidity55%

Visibility—

Dew point44°

Sat, 1752° / 41°

52 °

Hermon, Saturday, 17 October

Clear. High 52°, low 41°.

Pressure30.53 inHg

Wind13.4 mph N

Humidity50%

Visibility—

Dew point31°

Sun, 1855° / 38°

55 °

Hermon, Sunday, 18 October

Clear. High 55°, low 38°.

Pressure30.56 inHg

Wind6.1 mph SE

Humidity43%

Visibility—

Dew point29°

Mon, 1960° / 41°

60 °

Hermon, Monday, 19 October

Partly cloudy. High 60°, low 41°.

Pressure30.42 inHg

Wind10.4 mph S

Humidity39%

Visibility—

Dew point31°

Tue, 2069° / 46°

69 °

Hermon, Tuesday, 20 October

Clear. High 69°, low 46°.

Pressure30.21 inHg

Wind12.1 mph S

Humidity48%

Visibility—

Dew point43°

Wed, 2170° / 55°

0.24

70 °

Hermon, Wednesday, 21 October

Rain. High 70°, low 55°.

Pressure30.03 inHg

Wind12.1 mph S

Humidity67%

Visibility—

Dew point56°

Thu, 2269° / 52°

69 °

Hermon, Thursday, 22 October

Clear. High 69°, low 52°.

Pressure30.18 inHg

Wind6.8 mph W

Humidity53%

Visibility—

Dew point48°

Fri, 2371° / 53°

71 °

Hermon, Friday, 23 October

Clear. High 71°, low 53°.

Pressure30.21 inHg

Wind5.2 mph SE

Humidity50%

Visibility—

Dew point48°

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 Hermon, 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 Hermon, 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.