As of 10:34 CDT

Weather in Hermon, IL

62°

Hermon, Friday, 9 October, 10:34

Clear. Feels like 62°. High 82°, low 55°.

Pressure30.09 inHg

Wind1 mph E

Humidity92%

Visibility6.2 mi

Dew point60°

See detailed hourly forecast

Sat, 1080° / 61°

80 °

Hermon, Saturday, 10 October

Overcast. High 80°, low 61°.

Pressure30.03 inHg

Wind6.9 mph S

Humidity55%

Visibility6.2 mi

Dew point56°

Sun, 1179° / 54°

79 °

Hermon, Sunday, 11 October

Clear. High 79°, low 54°.

Pressure29.94 inHg

Wind4.1 mph S

Humidity56%

Visibility6.2 mi

Dew point57°

Mon, 1286° / 66°

86 °

Hermon, Monday, 12 October

Clear. High 86°, low 66°.

Pressure29.83 inHg

Wind11.8 mph SW

Humidity53%

Visibility6.2 mi

Dew point63°

Tue, 1378° / 66°

78 °

Hermon, Tuesday, 13 October

Clear. High 78°, low 66°.

Pressure29.85 inHg

Wind11.7 mph SW

Humidity66%

Visibility—

Dew point64°

Wed, 1468° / 61°

0.2

68 °

Hermon, Wednesday, 14 October

Rain. High 68°, low 61°.

Pressure30.03 inHg

Wind10.5 mph E

Humidity87%

Visibility—

Dew point59°

Thu, 1563° / 55°

0.58

63 °

Hermon, Thursday, 15 October

Rain. High 63°, low 55°.

Pressure29.94 inHg

Wind13 mph SE

Humidity94%

Visibility—

Dew point54°

Fri, 1669° / 44°

0.7

69 °

Hermon, Friday, 16 October

Heavy rain. High 69°, low 44°.

Pressure30.00 inHg

Wind25.4 mph W

Humidity45%

Visibility—

Dew point33°

Sat, 1746° / 36°

46 °

Hermon, Saturday, 17 October

Overcast. High 46°, low 36°.

Pressure30.42 inHg

Wind22.5 mph NW

Humidity48%

Visibility—

Dew point26°

Sun, 1855° / 33°

55 °

Hermon, Sunday, 18 October

Clear. High 55°, low 33°.

Pressure30.30 inHg

Wind14 mph S

Humidity39%

Visibility—

Dew point25°

Mon, 1964° / 41°

64 °

Hermon, Monday, 19 October

Overcast. High 64°, low 41°.

Pressure30.21 inHg

Wind10.6 mph SW

Humidity39%

Visibility—

Dew point34°

Tue, 2068° / 46°

68 °

Hermon, Tuesday, 20 October

Clear. High 68°, low 46°.

Pressure30.30 inHg

Wind9.6 mph S

Humidity34%

Visibility—

Dew point34°

Wed, 2171° / 53°

71 °

Hermon, Wednesday, 21 October

Overcast. High 71°, low 53°.

Pressure30.21 inHg

Wind13.1 mph SW

Humidity43%

Visibility—

Dew point44°

Thu, 2262° / 55°

0.45

62 °

Hermon, Thursday, 22 October

Rain. High 62°, low 55°.

Pressure29.97 inHg

Wind14.8 mph NW

Humidity85%

Visibility—

Dew point57°

Fri, 2351° / 41°

51 °

Hermon, Friday, 23 October

Overcast. High 51°, low 41°.

Pressure30.09 inHg

Wind20.4 mph NW

Humidity55%

Visibility—

Dew point32°

Sat, 2446° / 33°

46 °

Hermon, Saturday, 24 October

Clear. High 46°, low 33°.

Pressure30.27 inHg

Wind12.9 mph NW

Humidity52%

Visibility—

Dew point27°

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.