EN
English Español

As of 07:28 CDT

Weather in Herrin, IL

56°Current weather

Herrin, Saturday, 10 October, 07:28

Overcast. Feels like 55°. High 76°, low 54°.

Pressure30.06 inHg
Wind0 mph N
Humidity94%
Visibility6.2 mi
Dew point54°
Sun, 1184° / 53°0Clear
84 °Clear

Herrin, Sunday, 11 October

Clear. High 84°, low 53°.

Pressure30.00 inHg
Wind5.1 mph NW
Humidity58%
Visibility6.2 mi
Dew point58°
Mon, 1289° / 63°0Clear
89 °Clear

Herrin, Monday, 12 October

Clear. High 89°, low 63°.

Pressure29.97 inHg
Wind9.9 mph SW
Humidity43%
Visibility6.2 mi
Dew point60°
Tue, 1390° / 67°0Clear
90 °Clear

Herrin, Tuesday, 13 October

Clear. High 90°, low 67°.

Pressure29.91 inHg
Wind9.8 mph SW
Humidity42%
Visibility6.2 mi
Dew point60°
Wed, 1477° / 72°0.35Rain
77 °Rain

Herrin, Wednesday, 14 October

Rain. High 77°, low 72°.

Pressure30.03 inHg
Wind10 mph W
Humidity87%
Visibility—
Dew point71°
Thu, 1577° / 69°0.2Rain
77 °Rain

Herrin, Thursday, 15 October

Rain. High 77°, low 69°.

Pressure30.18 inHg
Wind14.2 mph S
Humidity67%
Visibility—
Dew point61°
Fri, 1672° / 59°0.15Rain
72 °Rain

Herrin, Friday, 16 October

Rain. High 72°, low 59°.

Pressure30.00 inHg
Wind11.2 mph SW
Humidity44%
Visibility—
Dew point46°
Sat, 1756° / 41°0Light rain
56 °Light rain

Herrin, Saturday, 17 October

Light rain. High 56°, low 41°.

Pressure30.24 inHg
Wind17.1 mph NW
Humidity45%
Visibility—
Dew point28°
Sun, 1855° / 36°0Mostly clear
55 °Mostly clear

Herrin, Sunday, 18 October

Mostly clear. High 55°, low 36°.

Pressure30.45 inHg
Wind14.3 mph NW
Humidity42%
Visibility—
Dew point28°
Mon, 1959° / 34°0Mostly clear
59 °Mostly clear

Herrin, Monday, 19 October

Mostly clear. High 59°, low 34°.

Pressure30.39 inHg
Wind6.5 mph SE
Humidity28%
Visibility—
Dew point21°
Tue, 2062° / 39°0Overcast
62 °Overcast

Herrin, Tuesday, 20 October

Overcast. High 62°, low 39°.

Pressure30.33 inHg
Wind6.2 mph SE
Humidity25%
Visibility—
Dew point22°
Wed, 2170° / 42°0Mostly clear
70 °Mostly clear

Herrin, Wednesday, 21 October

Mostly clear. High 70°, low 42°.

Pressure30.27 inHg
Wind7.9 mph S
Humidity27%
Visibility—
Dew point30°
Thu, 2272° / 47°0Clear
72 °Clear

Herrin, Thursday, 22 October

Clear. High 72°, low 47°.

Pressure30.18 inHg
Wind12.8 mph S
Humidity30%
Visibility—
Dew point35°
Fri, 2368° / 51°0.07Light rain
68 °Light rain

Herrin, Friday, 23 October

Light rain. High 68°, low 51°.

Pressure29.97 inHg
Wind14.4 mph SW
Humidity54%
Visibility—
Dew point48°
Sat, 2470° / 50°1.13Heavy rain
70 °Heavy rain

Herrin, Saturday, 24 October

Heavy rain. High 70°, low 50°.

Pressure29.85 inHg
Wind16.2 mph SW
Humidity52%
Visibility—
Dew point49°
Sun, 2562° / 46°0.03Light rain
62 °Light rain

Herrin, Sunday, 25 October

Light rain. High 62°, low 46°.

Pressure29.97 inHg
Wind14.9 mph NW
Humidity45%
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 Herrin, 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 Herrin, 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.