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As of 11:23 CDT

Weather in Illiana Heights, IL

84°Current weather

Illiana Heights, Sunday, 9 August, 11:23

Partly cloudy. Feels like 94°. High 88°, low 64°.

Pressure29.97 inHg
Wind12 mph S
Humidity83%
Visibility6.2 mi
Dew point77°
Mon, 1093° / 73°0.23Rain
93 °Rain

Illiana Heights, Monday, 10 August

Rain. High 93°, low 73°.

Pressure29.91 inHg
Wind11.3 mph SW
Humidity61%
Visibility6.2 mi
Dew point72°
Tue, 1190° / 67°0.6Rain
90 °Rain

Illiana Heights, Tuesday, 11 August

Rain. High 90°, low 67°.

Pressure29.85 inHg
Wind13.1 mph S
Humidity65%
Visibility6.2 mi
Dew point73°
Wed, 1284° / 68°0.07Light rain
84 °Light rain

Illiana Heights, Wednesday, 12 August

Light rain. High 84°, low 68°.

Pressure29.85 inHg
Wind5.5 mph N
Humidity63%
Visibility6.2 mi
Dew point67°
Thu, 1375° / 63°0.44Rain
75 °Rain

Illiana Heights, Thursday, 13 August

Rain. High 75°, low 63°.

Pressure29.94 inHg
Wind13.8 mph N
Humidity66%
Visibility—
Dew point62°
Fri, 1475° / 63°0.07Light rain
75 °Light rain

Illiana Heights, Friday, 14 August

Light rain. High 75°, low 63°.

Pressure30.12 inHg
Wind12.7 mph E
Humidity63%
Visibility—
Dew point60°
Sat, 1574° / 61°0.05Light rain
74 °Light rain

Illiana Heights, Saturday, 15 August

Light rain. High 74°, low 61°.

Pressure30.24 inHg
Wind14.2 mph SE
Humidity73%
Visibility—
Dew point59°
Sun, 1680° / 64°0.19Light rain
80 °Light rain

Illiana Heights, Sunday, 16 August

Light rain. High 80°, low 64°.

Pressure29.97 inHg
Wind13.5 mph NW
Humidity76%
Visibility—
Dew point70°
Mon, 1775° / 61°0.01Light rain
75 °Light rain

Illiana Heights, Monday, 17 August

Light rain. High 75°, low 61°.

Pressure30.09 inHg
Wind8.7 mph NE
Humidity64%
Visibility—
Dew point60°
Tue, 1878° / 58°0Overcast
78 °Overcast

Illiana Heights, Tuesday, 18 August

Overcast. High 78°, low 58°.

Pressure29.91 inHg
Wind10 mph S
Humidity70%
Visibility—
Dew point62°
Wed, 1979° / 63°0.03Light rain
79 °Light rain

Illiana Heights, Wednesday, 19 August

Light rain. High 79°, low 63°.

Pressure29.80 inHg
Wind15.7 mph NW
Humidity59%
Visibility—
Dew point62°
Thu, 2072° / 60°0.25Rain
72 °Rain

Illiana Heights, Thursday, 20 August

Rain. High 72°, low 60°.

Pressure29.94 inHg
Wind6.4 mph N
Humidity77%
Visibility—
Dew point63°
Fri, 2181° / 60°0.4Rain
81 °Rain

Illiana Heights, Friday, 21 August

Rain. High 81°, low 60°.

Pressure29.85 inHg
Wind13.7 mph S
Humidity55%
Visibility—
Dew point61°
Sat, 2281° / 65°0.6Heavy rain
81 °Heavy rain

Illiana Heights, Saturday, 22 August

Heavy rain. High 81°, low 65°.

Pressure29.80 inHg
Wind13 mph NW
Humidity63%
Visibility—
Dew point65°
Sun, 2376° / 60°0Clear
76 °Clear

Illiana Heights, Sunday, 23 August

Clear. High 76°, low 60°.

Pressure30.12 inHg
Wind7.4 mph N
Humidity49%
Visibility—
Dew point53°
Mon, 2479° / 59°0Clear
79 °Clear

Illiana Heights, Monday, 24 August

Clear. High 79°, low 59°.

Pressure30.21 inHg
Wind5.9 mph S
Humidity57%
Visibility—
Dew point58°

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 Illiana Heights, 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 Illiana Heights, 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.