As of 03:25 CDT

Weather in Olney, IL

55°

Olney, Thursday, 8 October, 03:25

Clear. Feels like 55°. High 84°, low 54°.

Pressure30.00 inHg

Wind0 mph N

Humidity88%

Visibility6.2 mi

Dew point51°

See detailed hourly forecast

Fri, 0988° / 51°

88 °

Olney, Friday, 9 October

Clear. High 88°, low 51°.

Pressure30.15 inHg

Wind8 mph S

Humidity30%

Visibility6.2 mi

Dew point47°

Sat, 1081° / 60°

81 °

Olney, Saturday, 10 October

Overcast. High 81°, low 60°.

Pressure30.12 inHg

Wind5.8 mph E

Humidity43%

Visibility6.2 mi

Dew point54°

Sun, 1173° / 59°

0.15

73 °

Olney, Sunday, 11 October

Rain. High 73°, low 59°.

Pressure29.94 inHg

Wind5.3 mph NE

Humidity69%

Visibility6.2 mi

Dew point58°

Mon, 1285° / 57°

85 °

Olney, Monday, 12 October

Clear. High 85°, low 57°.

Pressure29.94 inHg

Wind8.8 mph S

Humidity43%

Visibility—

Dew point54°

Tue, 1387° / 67°

87 °

Olney, Tuesday, 13 October

Clear. High 87°, low 67°.

Pressure29.85 inHg

Wind10.3 mph NE

Humidity39%

Visibility—

Dew point56°

Wed, 1477° / 50°

77 °

Olney, Wednesday, 14 October

Clear. High 77°, low 50°.

Pressure30.06 inHg

Wind9.4 mph E

Humidity32%

Visibility—

Dew point38°

Thu, 1593° / 63°

93 °

Olney, Thursday, 15 October

Clear. High 93°, low 63°.

Pressure29.94 inHg

Wind19.8 mph SW

Humidity36%

Visibility—

Dew point57°

Fri, 1689° / 71°

0.02

89 °

Olney, Friday, 16 October

Light rain. High 89°, low 71°.

Pressure29.97 inHg

Wind20.8 mph SW

Humidity44%

Visibility—

Dew point62°

Sat, 1762° / 51°

0.04

62 °

Olney, Saturday, 17 October

Light rain. High 62°, low 51°.

Pressure30.21 inHg

Wind14.5 mph NW

Humidity44%

Visibility—

Dew point36°

Sun, 1862° / 43°

62 °

Olney, Sunday, 18 October

Clear. High 62°, low 43°.

Pressure30.27 inHg

Wind9.2 mph NW

Humidity39%

Visibility—

Dew point33°

Mon, 1966° / 41°

66 °

Olney, Monday, 19 October

Clear. High 66°, low 41°.

Pressure30.27 inHg

Wind6.5 mph N

Humidity32%

Visibility—

Dew point30°

Tue, 2072° / 46°

72 °

Olney, Tuesday, 20 October

Overcast. High 72°, low 46°.

Pressure30.15 inHg

Wind7.8 mph N

Humidity27%

Visibility—

Dew point31°

Wed, 2165° / 46°

65 °

Olney, Wednesday, 21 October

Overcast. High 65°, low 46°.

Pressure30.18 inHg

Wind11.9 mph NE

Humidity28%

Visibility—

Dew point27°

Thu, 2259° / 50°

0.17

59 °

Olney, Thursday, 22 October

Light rain. High 59°, low 50°.

Pressure29.83 inHg

Wind12.1 mph S

Humidity86%

Visibility—

Dew point50°

Fri, 2360° / 54°

0.02

60 °

Olney, Friday, 23 October

Light rain. High 60°, low 54°.

Pressure29.77 inHg

Wind12.7 mph SW

Humidity92%

Visibility—

Dew point52°

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 Olney, 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 Olney, 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.