EN
English Español

As of 12:24 CDT

Weather in Sumner, IL

88°Current weather

Sumner, Saturday, 8 August, 12:24

Clear. Feels like 99°. High 89°, low 73°.

Pressure30.06 inHg
Wind6.5 mph W
Humidity68%
Visibility6.2 mi
Dew point74°
Sun, 0991° / 71°0Partly cloudy
91 °Partly cloudy

Sumner, Sunday, 9 August

Partly cloudy. High 91°, low 71°.

Pressure30.03 inHg
Wind10.4 mph SW
Humidity67%
Visibility6.2 mi
Dew point74°
Mon, 1092° / 70°0Partly cloudy
92 °Partly cloudy

Sumner, Monday, 10 August

Partly cloudy. High 92°, low 70°.

Pressure30.00 inHg
Wind11.8 mph SW
Humidity62%
Visibility6.2 mi
Dew point74°
Tue, 1194° / 74°0Partly cloudy
94 °Partly cloudy

Sumner, Tuesday, 11 August

Partly cloudy. High 94°, low 74°.

Pressure29.91 inHg
Wind14.9 mph SW
Humidity58%
Visibility6.2 mi
Dew point73°
Wed, 1286° / 70°0.36Rain
86 °Rain

Sumner, Wednesday, 12 August

Rain. High 86°, low 70°.

Pressure29.83 inHg
Wind9.5 mph NW
Humidity63%
Visibility6.2 mi
Dew point73°
Thu, 1375° / 65°0.25Light rain
75 °Light rain

Sumner, Thursday, 13 August

Light rain. High 75°, low 65°.

Pressure29.85 inHg
Wind16.7 mph W
Humidity93%
Visibility—
Dew point72°
Fri, 1474° / 56°0Clear
74 °Clear

Sumner, Friday, 14 August

Clear. High 74°, low 56°.

Pressure30.15 inHg
Wind8.7 mph NE
Humidity57%
Visibility—
Dew point55°
Sat, 1577° / 56°0Overcast
77 °Overcast

Sumner, Saturday, 15 August

Overcast. High 77°, low 56°.

Pressure30.21 inHg
Wind6.9 mph E
Humidity56%
Visibility—
Dew point56°
Sun, 1668° / 65°0.22Rain
68 °Rain

Sumner, Sunday, 16 August

Rain. High 68°, low 65°.

Pressure30.12 inHg
Wind11.7 mph SE
Humidity98%
Visibility—
Dew point65°
Mon, 1783° / 68°0.34Rain
83 °Rain

Sumner, Monday, 17 August

Rain. High 83°, low 68°.

Pressure29.91 inHg
Wind9.3 mph SE
Humidity76%
Visibility—
Dew point73°
Tue, 1885° / 69°0.02Light rain
85 °Light rain

Sumner, Tuesday, 18 August

Light rain. High 85°, low 69°.

Pressure29.94 inHg
Wind7 mph W
Humidity62%
Visibility—
Dew point68°
Wed, 1988° / 69°0.37Rain
88 °Rain

Sumner, Wednesday, 19 August

Rain. High 88°, low 69°.

Pressure29.91 inHg
Wind16.5 mph N
Humidity62%
Visibility—
Dew point71°
Thu, 2071° / 58°0.01Light rain
71 °Light rain

Sumner, Thursday, 20 August

Light rain. High 71°, low 58°.

Pressure30.15 inHg
Wind14 mph N
Humidity60%
Visibility—
Dew point55°
Fri, 2171° / 51°0Clear
71 °Clear

Sumner, Friday, 21 August

Clear. High 71°, low 51°.

Pressure30.21 inHg
Wind8.6 mph NE
Humidity50%
Visibility—
Dew point48°
Sat, 2274° / 52°0Mostly clear
74 °Mostly clear

Sumner, Saturday, 22 August

Mostly clear. High 74°, low 52°.

Pressure30.15 inHg
Wind6 mph NE
Humidity52%
Visibility—
Dew point51°
Sun, 2377° / 55°0Clear
77 °Clear

Sumner, Sunday, 23 August

Clear. High 77°, low 55°.

Pressure30.12 inHg
Wind6 mph NE
Humidity49%
Visibility—
Dew point52°

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.