As of 09:55 CDT

Weather in Hermon, IL

67°

Hermon, Saturday, 10 October, 09:55

Mostly clear. Feels like 66°. High 82°, low 60°.

Pressure30.06 inHg

Wind7.7 mph S

Humidity62%

Visibility6.2 mi

Dew point54°

See detailed hourly forecast

Sun, 1181° / 52°

81 °

Hermon, Sunday, 11 October

Clear. High 81°, low 52°.

Pressure29.97 inHg

Wind6.7 mph S

Humidity55%

Visibility6.2 mi

Dew point56°

Mon, 1285° / 63°

85 °

Hermon, Monday, 12 October

Clear. High 85°, low 63°.

Pressure29.85 inHg

Wind11.3 mph SW

Humidity56%

Visibility6.2 mi

Dew point63°

Tue, 1379° / 68°

79 °

Hermon, Tuesday, 13 October

Clear. High 79°, low 68°.

Pressure29.88 inHg

Wind7.4 mph W

Humidity66%

Visibility6.2 mi

Dew point64°

Wed, 1472° / 61°

0.07

72 °

Hermon, Wednesday, 14 October

Light rain. High 72°, low 61°.

Pressure30.09 inHg

Wind11.9 mph NE

Humidity59%

Visibility—

Dew point55°

Thu, 1557° / 55°

0.62

57 °

Hermon, Thursday, 15 October

Rain. High 57°, low 55°.

Pressure30.27 inHg

Wind11.5 mph E

Humidity94%

Visibility—

Dew point54°

Fri, 1658° / 39°

58 °

Hermon, Friday, 16 October

Partly cloudy. High 58°, low 39°.

Pressure29.97 inHg

Wind25.7 mph W

Humidity44%

Visibility—

Dew point32°

Sat, 1742° / 33°

42 °

Hermon, Saturday, 17 October

Overcast. High 42°, low 33°.

Pressure30.39 inHg

Wind22.6 mph NW

Humidity47%

Visibility—

Dew point20°

Sun, 1849° / 27°

49 °

Hermon, Sunday, 18 October

Clear. High 49°, low 27°.

Pressure30.53 inHg

Wind7.7 mph S

Humidity36%

Visibility—

Dew point18°

Mon, 1960° / 36°

60 °

Hermon, Monday, 19 October

Overcast. High 60°, low 36°.

Pressure30.33 inHg

Wind15.2 mph S

Humidity33%

Visibility—

Dew point25°

Tue, 2064° / 41°

64 °

Hermon, Tuesday, 20 October

Overcast. High 64°, low 41°.

Pressure30.21 inHg

Wind16 mph S

Humidity30%

Visibility—

Dew point28°

Wed, 2159° / 47°

0.31

59 °

Hermon, Wednesday, 21 October

Rain. High 59°, low 47°.

Pressure30.00 inHg

Wind16.1 mph SW

Humidity92%

Visibility—

Dew point48°

Thu, 2268° / 43°

68 °

Hermon, Thursday, 22 October

Clear. High 68°, low 43°.

Pressure30.12 inHg

Wind14 mph SW

Humidity41%

Visibility—

Dew point38°

Fri, 2360° / 43°

60 °

Hermon, Friday, 23 October

Clear. High 60°, low 43°.

Pressure30.21 inHg

Wind8.8 mph N

Humidity41%

Visibility—

Dew point33°

Sat, 2459° / 48°

0.11

59 °

Hermon, Saturday, 24 October

Light rain. High 59°, low 48°.

Pressure30.18 inHg

Wind8.9 mph SE

Humidity48%

Visibility—

Dew point35°

Sun, 2559° / 39°

0.25

59 °

Hermon, Sunday, 25 October

Light rain. High 59°, low 39°.

Pressure29.83 inHg

Wind18.9 mph NW

Humidity78%

Visibility—

Dew point49°

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.