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As of 07:23 CDT

Weather in Round Prairie, IL

69°Current weather

Round Prairie, Sunday, 9 August, 07:23

Clear. Feels like 70°. High 92°, low 69°.

Pressure30.06 inHg
Wind6.4 mph S
Humidity96%
Visibility6.2 mi
Dew point68°
Mon, 1096° / 76°0Clear
96 °Clear

Round Prairie, Monday, 10 August

Clear. High 96°, low 76°.

Pressure29.97 inHg
Wind15.1 mph SW
Humidity53%
Visibility6.2 mi
Dew point72°
Tue, 1197° / 76°0Light rain
97 °Light rain

Round Prairie, Tuesday, 11 August

Light rain. High 97°, low 76°.

Pressure29.91 inHg
Wind11.9 mph SW
Humidity57%
Visibility6.2 mi
Dew point73°
Wed, 1294° / 74°0.21Rain
94 °Rain

Round Prairie, Wednesday, 12 August

Rain. High 94°, low 74°.

Pressure29.83 inHg
Wind10.6 mph W
Humidity52%
Visibility6.2 mi
Dew point72°
Thu, 1385° / 71°0.27Rain
85 °Rain

Round Prairie, Thursday, 13 August

Rain. High 85°, low 71°.

Pressure29.91 inHg
Wind11.4 mph E
Humidity65%
Visibility—
Dew point70°
Fri, 1473° / 66°0.2Light rain
73 °Light rain

Round Prairie, Friday, 14 August

Light rain. High 73°, low 66°.

Pressure30.09 inHg
Wind15.8 mph E
Humidity84%
Visibility—
Dew point65°
Sat, 1583° / 65°0.06Light rain
83 °Light rain

Round Prairie, Saturday, 15 August

Light rain. High 83°, low 65°.

Pressure30.15 inHg
Wind11.6 mph E
Humidity75%
Visibility—
Dew point68°
Sun, 1688° / 68°0Partly cloudy
88 °Partly cloudy

Round Prairie, Sunday, 16 August

Partly cloudy. High 88°, low 68°.

Pressure30.03 inHg
Wind10.3 mph N
Humidity65%
Visibility—
Dew point71°
Mon, 1786° / 71°0Partly cloudy
86 °Partly cloudy

Round Prairie, Monday, 17 August

Partly cloudy. High 86°, low 71°.

Pressure30.06 inHg
Wind7.4 mph N
Humidity63%
Visibility—
Dew point68°
Tue, 1888° / 67°0Clear
88 °Clear

Round Prairie, Tuesday, 18 August

Clear. High 88°, low 67°.

Pressure30.00 inHg
Wind7.8 mph SE
Humidity54%
Visibility—
Dew point65°
Wed, 1994° / 72°0Overcast
94 °Overcast

Round Prairie, Wednesday, 19 August

Overcast. High 94°, low 72°.

Pressure29.94 inHg
Wind14.2 mph SE
Humidity55%
Visibility—
Dew point70°
Thu, 20110° / 79°0Overcast
110 °Overcast

Round Prairie, Thursday, 20 August

Overcast. High 110°, low 79°.

Pressure29.85 inHg
Wind11 mph SW
Humidity33%
Visibility—
Dew point64°
Fri, 21100° / 80°0Partly cloudy
100 °Partly cloudy

Round Prairie, Friday, 21 August

Partly cloudy. High 100°, low 80°.

Pressure29.85 inHg
Wind14.6 mph SW
Humidity29%
Visibility—
Dew point60°
Sat, 22106° / 78°0Clear
106 °Clear

Round Prairie, Saturday, 22 August

Clear. High 106°, low 78°.

Pressure29.85 inHg
Wind9.3 mph SE
Humidity32%
Visibility—
Dew point64°
Sun, 23105° / 78°0.02Light rain
105 °Light rain

Round Prairie, Sunday, 23 August

Light rain. High 105°, low 78°.

Pressure29.85 inHg
Wind13.3 mph S
Humidity34%
Visibility—
Dew point65°
Mon, 2496° / 73°0.23Light rain
96 °Light rain

Round Prairie, Monday, 24 August

Light rain. High 96°, low 73°.

Pressure30.00 inHg
Wind8.3 mph N
Humidity49%
Visibility—
Dew point69°

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 Round Prairie, 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 Round Prairie, 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.