As of 02:05 CDT

Weather in Grant Park, IL

63°

Grant Park, Sunday, 9 August, 02:05

Clear. Feels like 64°. High 86°, low 64°.

Pressure29.97 inHg

Wind3.5 mph SW

Humidity97%

Visibility6.2 mi

Dew point63°

See detailed hourly forecast

Mon, 1091° / 71°

0.02

91 °

Grant Park, Monday, 10 August

Light rain. High 91°, low 71°.

Pressure29.88 inHg

Wind9.5 mph W

Humidity73%

Visibility6.2 mi

Dew point75°

Tue, 1185° / 70°

0.12

85 °

Grant Park, Tuesday, 11 August

Rain. High 85°, low 70°.

Pressure29.85 inHg

Wind9.3 mph SW

Humidity68%

Visibility6.2 mi

Dew point72°

Wed, 1282° / 69°

0.05

82 °

Grant Park, Wednesday, 12 August

Light rain. High 82°, low 69°.

Pressure29.83 inHg

Wind6.9 mph NW

Humidity79%

Visibility6.2 mi

Dew point72°

Thu, 1375° / 60°

0.09

75 °

Grant Park, Thursday, 13 August

Light rain. High 75°, low 60°.

Pressure30.00 inHg

Wind11.5 mph NE

Humidity66%

Visibility—

Dew point62°

Fri, 1474° / 58°

0.23

74 °

Grant Park, Friday, 14 August

Rain. High 74°, low 58°.

Pressure30.15 inHg

Wind10.4 mph E

Humidity58%

Visibility—

Dew point55°

Sat, 1576° / 60°

0.04

76 °

Grant Park, Saturday, 15 August

Light rain. High 76°, low 60°.

Pressure30.24 inHg

Wind9.7 mph SE

Humidity54%

Visibility—

Dew point55°

Sun, 1678° / 62°

0.06

78 °

Grant Park, Sunday, 16 August

Light rain. High 78°, low 62°.

Pressure30.09 inHg

Wind8.2 mph E

Humidity69%

Visibility—

Dew point64°

Mon, 1780° / 63°

0.02

80 °

Grant Park, Monday, 17 August

Light rain. High 80°, low 63°.

Pressure30.06 inHg

Wind8 mph W

Humidity67%

Visibility—

Dew point65°

Tue, 1879° / 62°

79 °

Grant Park, Tuesday, 18 August

Partly cloudy. High 79°, low 62°.

Pressure30.03 inHg

Wind6 mph S

Humidity68%

Visibility—

Dew point65°

Wed, 1985° / 66°

0.02

85 °

Grant Park, Wednesday, 19 August

Light rain. High 85°, low 66°.

Pressure29.94 inHg

Wind16.2 mph S

Humidity61%

Visibility—

Dew point67°

Thu, 2090° / 72°

90 °

Grant Park, Thursday, 20 August

Overcast. High 90°, low 72°.

Pressure29.80 inHg

Wind11.4 mph S

Humidity55%

Visibility—

Dew point70°

Fri, 2186° / 72°

86 °

Grant Park, Friday, 21 August

Mostly clear. High 86°, low 72°.

Pressure29.88 inHg

Wind13.9 mph NE

Humidity62%

Visibility—

Dew point70°

Sat, 2294° / 69°

94 °

Grant Park, Saturday, 22 August

Clear. High 94°, low 69°.

Pressure29.85 inHg

Wind11.4 mph S

Humidity58%

Visibility—

Dew point73°

Sun, 2391° / 69°

91 °

Grant Park, Sunday, 23 August

Overcast. High 91°, low 69°.

Pressure29.83 inHg

Wind11.6 mph NE

Humidity53%

Visibility—

Dew point70°

Mon, 2485° / 68°

0.91

85 °

Grant Park, Monday, 24 August

Heavy rain. High 85°, low 68°.

Pressure30.03 inHg

Wind9.1 mph NW

Humidity71%

Visibility—

Dew point70°

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 Grant Park, 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 Grant Park, 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.