As of 23:13 CDT

Weather in Hermon, IL

67°

Hermon, Friday, 9 October, 23:13

Clear. Feels like 66°. High 79°, low 55°.

Pressure30.00 inHg

Wind9.2 mph S

Humidity66%

Visibility6.2 mi

Dew point54°

See detailed hourly forecast

Sat, 1081° / 59°

81 °

Hermon, Saturday, 10 October

Overcast. High 81°, low 59°.

Pressure30.06 inHg

Wind8.4 mph S

Humidity53%

Visibility6.2 mi

Dew point57°

Sun, 1179° / 53°

79 °

Hermon, Sunday, 11 October

Clear. High 79°, low 53°.

Pressure29.94 inHg

Wind5.4 mph S

Humidity56%

Visibility6.2 mi

Dew point57°

Mon, 1285° / 65°

85 °

Hermon, Monday, 12 October

Clear. High 85°, low 65°.

Pressure29.83 inHg

Wind10.7 mph SW

Humidity53%

Visibility6.2 mi

Dew point62°

Tue, 1381° / 69°

81 °

Hermon, Tuesday, 13 October

Clear. High 81°, low 69°.

Pressure29.85 inHg

Wind6.9 mph NW

Humidity65%

Visibility6.2 mi

Dew point66°

Wed, 1470° / 63°

0.33

70 °

Hermon, Wednesday, 14 October

Rain. High 70°, low 63°.

Pressure30.06 inHg

Wind9.4 mph NE

Humidity76%

Visibility—

Dew point59°

Thu, 1572° / 57°

0.07

72 °

Hermon, Thursday, 15 October

Light rain. High 72°, low 57°.

Pressure30.24 inHg

Wind16.4 mph W

Humidity62%

Visibility—

Dew point50°

Fri, 1662° / 47°

62 °

Hermon, Friday, 16 October

Mostly clear. High 62°, low 47°.

Pressure29.94 inHg

Wind24.2 mph W

Humidity42%

Visibility—

Dew point36°

Sat, 1745° / 36°

0.01

45 °

Hermon, Saturday, 17 October

Light rain. High 45°, low 36°.

Pressure30.42 inHg

Wind21.9 mph W

Humidity47%

Visibility—

Dew point26°

Sun, 1854° / 31°

54 °

Hermon, Sunday, 18 October

Clear. High 54°, low 31°.

Pressure30.42 inHg

Wind13.7 mph S

Humidity33%

Visibility—

Dew point20°

Mon, 1961° / 39°

61 °

Hermon, Monday, 19 October

Clear. High 61°, low 39°.

Pressure30.33 inHg

Wind9.9 mph S

Humidity35%

Visibility—

Dew point29°

Tue, 2067° / 46°

67 °

Hermon, Tuesday, 20 October

Overcast. High 67°, low 46°.

Pressure30.18 inHg

Wind14.1 mph S

Humidity35%

Visibility—

Dew point33°

Wed, 2162° / 51°

1.24

62 °

Hermon, Wednesday, 21 October

Heavy rain. High 62°, low 51°.

Pressure29.97 inHg

Wind15.7 mph S

Humidity62%

Visibility—

Dew point48°

Thu, 2261° / 54°

0.28

61 °

Hermon, Thursday, 22 October

Light rain. High 61°, low 54°.

Pressure29.65 inHg

Wind17.5 mph S

Humidity90%

Visibility—

Dew point54°

Fri, 2366° / 48°

66 °

Hermon, Friday, 23 October

Mostly clear. High 66°, low 48°.

Pressure29.94 inHg

Wind11.1 mph NW

Humidity63%

Visibility—

Dew point49°

Sat, 2456° / 44°

56 °

Hermon, Saturday, 24 October

Overcast. High 56°, low 44°.

Pressure30.03 inHg

Wind16.5 mph NW

Humidity51%

Visibility—

Dew point37°

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.