As of 18:52 CDT

Weather in Grant Park, IL

56°

Grant Park, Tuesday, 20 October, 18:52

Clear. Feels like 54°. High 70°, low 41°.

Pressure30.30 inHg

Wind4.1 mph NE

Humidity71%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Wed, 2171° / 41°

71 °

Grant Park, Wednesday, 21 October

Clear. High 71°, low 41°.

Pressure30.27 inHg

Wind3.2 mph SW

Humidity46%

Visibility6.2 mi

Dew point45°

Thu, 2270° / 46°

70 °

Grant Park, Thursday, 22 October

Clear. High 70°, low 46°.

Pressure30.27 inHg

Wind3.5 mph NE

Humidity57%

Visibility6.2 mi

Dew point53°

Fri, 2368° / 48°

68 °

Grant Park, Friday, 23 October

Clear. High 68°, low 48°.

Pressure30.36 inHg

Wind4.9 mph SE

Humidity58%

Visibility6.2 mi

Dew point51°

Sat, 2467° / 48°

67 °

Grant Park, Saturday, 24 October

Partly cloudy. High 67°, low 48°.

Pressure30.39 inHg

Wind7.6 mph S

Humidity58%

Visibility6.2 mi

Dew point48°

Sun, 2571° / 50°

71 °

Grant Park, Sunday, 25 October

Overcast. High 71°, low 50°.

Pressure30.36 inHg

Wind5.7 mph S

Humidity51%

Visibility—

Dew point48°

Mon, 2672° / 53°

72 °

Grant Park, Monday, 26 October

Overcast. High 72°, low 53°.

Pressure30.15 inHg

Wind13.3 mph NE

Humidity41%

Visibility—

Dew point44°

Tue, 2752° / 47°

0.13

52 °

Grant Park, Tuesday, 27 October

Light rain. High 52°, low 47°.

Pressure30.27 inHg

Wind13.9 mph N

Humidity88%

Visibility—

Dew point46°

Wed, 2848° / 40°

0.15

48 °

Grant Park, Wednesday, 28 October

Light rain. High 48°, low 40°.

Pressure30.09 inHg

Wind19.1 mph NW

Humidity89%

Visibility—

Dew point41°

Thu, 2948° / 34°

48 °

Grant Park, Thursday, 29 October

Clear. High 48°, low 34°.

Pressure30.21 inHg

Wind14.1 mph NW

Humidity51%

Visibility—

Dew point29°

Fri, 3050° / 33°

50 °

Grant Park, Friday, 30 October

Clear. High 50°, low 33°.

Pressure30.27 inHg

Wind10.1 mph SE

Humidity38%

Visibility—

Dew point21°

Sat, 3155° / 39°

55 °

Grant Park, Saturday, 31 October

Overcast. High 55°, low 39°.

Pressure30.00 inHg

Wind16.3 mph S

Humidity38%

Visibility—

Dew point25°

Sun, 0164° / 52°

0.11

64 °

Grant Park, Sunday, 1 November

Light rain. High 64°, low 52°.

Pressure29.83 inHg

Wind21.2 mph S

Humidity82%

Visibility—

Dew point55°

Mon, 0262° / 43°

0.46

62 °

Grant Park, Monday, 2 November

Rain. High 62°, low 43°.

Pressure30.06 inHg

Wind20.8 mph S

Humidity51%

Visibility—

Dew point41°

Tue, 0351° / 36°

51 °

Grant Park, Tuesday, 3 November

Clear. High 51°, low 36°.

Pressure30.47 inHg

Wind7.7 mph NW

Humidity30%

Visibility—

Dew point18°

Wed, 0451° / 40°

51 °

Grant Park, Wednesday, 4 November

Overcast. High 51°, low 40°.

Pressure30.30 inHg

Wind11.6 mph SW

Humidity37%

Visibility—

Dew point24°

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.