As of 13:24 CDT

Weather in Old Mill Creek, IL

78°

Old Mill Creek, Sunday, 9 August, 13:24

Heavy rain. Feels like 79°. High 82°, low 62°.

Pressure29.94 inHg

Wind5.4 mph S

Humidity89%

Visibility6.2 mi

Dew point74°

See detailed hourly forecast

Mon, 1087° / 72°

0.24

87 °

Old Mill Creek, Monday, 10 August

Rain. High 87°, low 72°.

Pressure29.91 inHg

Wind3.9 mph E

Humidity79%

Visibility6.2 mi

Dew point71°

Tue, 1183° / 66°

1.22

83 °

Old Mill Creek, Tuesday, 11 August

Heavy rain. High 83°, low 66°.

Pressure29.83 inHg

Wind5.5 mph SE

Humidity63%

Visibility6.2 mi

Dew point69°

Wed, 1284° / 64°

84 °

Old Mill Creek, Wednesday, 12 August

Light rain. High 84°, low 64°.

Pressure29.85 inHg

Wind4.8 mph NW

Humidity65%

Visibility6.2 mi

Dew point67°

Thu, 1373° / 62°

0.01

73 °

Old Mill Creek, Thursday, 13 August

Light rain. High 73°, low 62°.

Pressure29.97 inHg

Wind7.7 mph E

Humidity70%

Visibility6.2 mi

Dew point62°

Fri, 1472° / 61°

72 °

Old Mill Creek, Friday, 14 August

Partly cloudy. High 72°, low 61°.

Pressure30.18 inHg

Wind13.3 mph E

Humidity55%

Visibility—

Dew point53°

Sat, 1573° / 62°

0.04

73 °

Old Mill Creek, Saturday, 15 August

Light rain. High 73°, low 62°.

Pressure30.24 inHg

Wind15.9 mph SE

Humidity58%

Visibility—

Dew point56°

Sun, 1674° / 65°

0.1

74 °

Old Mill Creek, Sunday, 16 August

Light rain. High 74°, low 65°.

Pressure30.00 inHg

Wind11.9 mph NW

Humidity83%

Visibility—

Dew point66°

Mon, 1777° / 63°

77 °

Old Mill Creek, Monday, 17 August

Overcast. High 77°, low 63°.

Pressure30.09 inHg

Wind7.3 mph N

Humidity58%

Visibility—

Dew point57°

Tue, 1877° / 60°

77 °

Old Mill Creek, Tuesday, 18 August

Overcast. High 77°, low 60°.

Pressure29.91 inHg

Wind7.8 mph S

Humidity76%

Visibility—

Dew point58°

Wed, 1974° / 62°

0.03

74 °

Old Mill Creek, Wednesday, 19 August

Light rain. High 74°, low 62°.

Pressure29.83 inHg

Wind13.6 mph NW

Humidity68%

Visibility—

Dew point61°

Thu, 2074° / 59°

0.05

74 °

Old Mill Creek, Thursday, 20 August

Light rain. High 74°, low 59°.

Pressure29.94 inHg

Wind7.8 mph E

Humidity63%

Visibility—

Dew point59°

Fri, 2178° / 61°

0.07

78 °

Old Mill Creek, Friday, 21 August

Light rain. High 78°, low 61°.

Pressure29.80 inHg

Wind11.8 mph S

Humidity68%

Visibility—

Dew point60°

Sat, 2280° / 62°

0.02

80 °

Old Mill Creek, Saturday, 22 August

Light rain. High 80°, low 62°.

Pressure29.77 inHg

Wind15.7 mph NW

Humidity49%

Visibility—

Dew point57°

Sun, 2377° / 55°

77 °

Old Mill Creek, Sunday, 23 August

Clear. High 77°, low 55°.

Pressure30.15 inHg

Wind8.6 mph NW

Humidity47%

Visibility—

Dew point51°

Mon, 2480° / 60°

80 °

Old Mill Creek, Monday, 24 August

Clear. High 80°, low 60°.

Pressure30.18 inHg

Wind8.9 mph W

Humidity57%

Visibility—

Dew point59°

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 Old Mill Creek, 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 Old Mill Creek, 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.