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As of 14:01 CDT

Weather in Sumner, IL

85°Current weather

Sumner, Wednesday, 7 October, 14:01

Clear. Feels like 84°. High 85°, low 51°.

Pressure29.88 inHg
Wind11.1 mph SW
Humidity40%
Visibility6.2 mi
Dew point58°
Thu, 0880° / 51°0Clear
80 °Clear

Sumner, Thursday, 8 October

Clear. High 80°, low 51°.

Pressure30.12 inHg
Wind1.4 mph NE
Humidity38%
Visibility6.2 mi
Dew point48°
Fri, 0982° / 52°0Clear
82 °Clear

Sumner, Friday, 9 October

Clear. High 82°, low 52°.

Pressure30.18 inHg
Wind8.3 mph SE
Humidity34%
Visibility6.2 mi
Dew point48°
Sat, 1080° / 60°0.01Light rain
80 °Light rain

Sumner, Saturday, 10 October

Light rain. High 80°, low 60°.

Pressure30.15 inHg
Wind6 mph SE
Humidity42%
Visibility6.2 mi
Dew point55°
Sun, 1167° / 62°0.95Rain
67 °Rain

Sumner, Sunday, 11 October

Rain. High 67°, low 62°.

Pressure29.77 inHg
Wind6.9 mph E
Humidity94%
Visibility2.3 mi
Dew point64°
Mon, 1282° / 58°0Clear
82 °Clear

Sumner, Monday, 12 October

Clear. High 82°, low 58°.

Pressure29.88 inHg
Wind10.1 mph SW
Humidity60%
Visibility—
Dew point61°
Tue, 1382° / 58°0Clear
82 °Clear

Sumner, Tuesday, 13 October

Clear. High 82°, low 58°.

Pressure29.91 inHg
Wind16 mph NW
Humidity47%
Visibility—
Dew point58°
Wed, 1468° / 47°0Clear
68 °Clear

Sumner, Wednesday, 14 October

Clear. High 68°, low 47°.

Pressure30.18 inHg
Wind11.1 mph E
Humidity32%
Visibility—
Dew point32°
Thu, 1580° / 50°0Clear
80 °Clear

Sumner, Thursday, 15 October

Clear. High 80°, low 50°.

Pressure30.00 inHg
Wind12.3 mph S
Humidity23%
Visibility—
Dew point33°
Fri, 1689° / 63°0.19Rain
89 °Rain

Sumner, Friday, 16 October

Rain. High 89°, low 63°.

Pressure29.85 inHg
Wind14.7 mph SW
Humidity42%
Visibility—
Dew point59°
Sat, 1767° / 49°0Overcast
67 °Overcast

Sumner, Saturday, 17 October

Overcast. High 67°, low 49°.

Pressure30.03 inHg
Wind10.7 mph W
Humidity39%
Visibility—
Dew point37°
Sun, 1863° / 45°0Mostly clear
63 °Mostly clear

Sumner, Sunday, 18 October

Mostly clear. High 63°, low 45°.

Pressure30.09 inHg
Wind15.1 mph W
Humidity39%
Visibility—
Dew point34°
Mon, 1963° / 42°0Clear
63 °Clear

Sumner, Monday, 19 October

Clear. High 63°, low 42°.

Pressure30.21 inHg
Wind8.4 mph NW
Humidity44%
Visibility—
Dew point35°
Tue, 2070° / 45°0Clear
70 °Clear

Sumner, Tuesday, 20 October

Clear. High 70°, low 45°.

Pressure30.21 inHg
Wind7.8 mph NW
Humidity33%
Visibility—
Dew point35°
Wed, 2162° / 45°0Clear
62 °Clear

Sumner, Wednesday, 21 October

Clear. High 62°, low 45°.

Pressure30.24 inHg
Wind12.5 mph NE
Humidity36%
Visibility—
Dew point32°
Thu, 2260° / 39°0Overcast
60 °Overcast

Sumner, Thursday, 22 October

Overcast. High 60°, low 39°.

Pressure30.27 inHg
Wind6.9 mph E
Humidity31%
Visibility—
Dew point25°

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 Sumner, 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 Sumner, 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.