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As of 22:24 CDT

Weather in Hermon, IL

61°Current weather

Hermon, Thursday, 8 October, 22:24

Overcast. Feels like 61°. High 78°, low 49°.

Pressure30.06 inHg
Wind4.6 mph E
Humidity74%
Visibility6.2 mi
Dew point52°
Fri, 0981° / 56°0.2Heavy rain
81 °Heavy rain

Hermon, Friday, 9 October

Heavy rain. High 81°, low 56°.

Pressure30.12 inHg
Wind12.9 mph NE
Humidity84%
Visibility3.5 mi
Dew point61°
Sat, 1081° / 59°0Overcast
81 °Overcast

Hermon, Saturday, 10 October

Overcast. High 81°, low 59°.

Pressure30.06 inHg
Wind7.7 mph SE
Humidity56%
Visibility6.2 mi
Dew point56°
Sun, 1176° / 54°0Clear
76 °Clear

Hermon, Sunday, 11 October

Clear. High 76°, low 54°.

Pressure29.94 inHg
Wind0.9 mph W
Humidity64%
Visibility6.2 mi
Dew point58°
Mon, 1285° / 61°0Clear
85 °Clear

Hermon, Monday, 12 October

Clear. High 85°, low 61°.

Pressure29.83 inHg
Wind10.1 mph SW
Humidity52%
Visibility6.2 mi
Dew point61°
Tue, 1378° / 65°0Clear
78 °Clear

Hermon, Tuesday, 13 October

Clear. High 78°, low 65°.

Pressure29.85 inHg
Wind10.3 mph SW
Humidity62%
Visibility—
Dew point63°
Wed, 1471° / 59°0.76Heavy rain
71 °Heavy rain

Hermon, Wednesday, 14 October

Heavy rain. High 71°, low 59°.

Pressure30.03 inHg
Wind11.3 mph E
Humidity58%
Visibility—
Dew point53°
Thu, 1579° / 62°0.36Light rain
79 °Light rain

Hermon, Thursday, 15 October

Light rain. High 79°, low 62°.

Pressure29.80 inHg
Wind17.6 mph SW
Humidity84%
Visibility—
Dew point67°
Fri, 1661° / 50°0Overcast
61 °Overcast

Hermon, Friday, 16 October

Overcast. High 61°, low 50°.

Pressure30.18 inHg
Wind14.5 mph NW
Humidity63%
Visibility—
Dew point42°
Sat, 1751° / 40°0Partly cloudy
51 °Partly cloudy

Hermon, Saturday, 17 October

Partly cloudy. High 51°, low 40°.

Pressure30.53 inHg
Wind15.1 mph N
Humidity45%
Visibility—
Dew point28°
Sun, 1854° / 37°0Overcast
54 °Overcast

Hermon, Sunday, 18 October

Overcast. High 54°, low 37°.

Pressure30.50 inHg
Wind5.6 mph SE
Humidity45%
Visibility—
Dew point29°
Mon, 1956° / 39°0Overcast
56 °Overcast

Hermon, Monday, 19 October

Overcast. High 56°, low 39°.

Pressure30.50 inHg
Wind7.8 mph E
Humidity42%
Visibility—
Dew point30°
Tue, 2052° / 48°0.02Light rain
52 °Light rain

Hermon, Tuesday, 20 October

Light rain. High 52°, low 48°.

Pressure30.33 inHg
Wind7.8 mph SW
Humidity67%
Visibility—
Dew point39°
Wed, 2168° / 45°0Clear
68 °Clear

Hermon, Wednesday, 21 October

Clear. High 68°, low 45°.

Pressure30.18 inHg
Wind9.8 mph SW
Humidity59%
Visibility—
Dew point48°
Thu, 2266° / 51°0Clear
66 °Clear

Hermon, Thursday, 22 October

Clear. High 66°, low 51°.

Pressure30.18 inHg
Wind10.7 mph N
Humidity53%
Visibility—
Dew point46°
Fri, 2359° / 45°0Clear
59 °Clear

Hermon, Friday, 23 October

Clear. High 59°, low 45°.

Pressure30.30 inHg
Wind7.7 mph NE
Humidity50%
Visibility—
Dew point38°

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.