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As of 13:58 CDT

Weather in Olney, IL

88°Current weather

Olney, Saturday, 8 August, 13:58

Clear. Feels like 97°. High 89°, low 72°.

Pressure30.03 inHg
Wind7 mph SE
Humidity65%
Visibility6.2 mi
Dew point75°
Sun, 0992° / 74°0Mostly clear
92 °Mostly clear

Olney, Sunday, 9 August

Mostly clear. High 92°, low 74°.

Pressure30.00 inHg
Wind12.3 mph S
Humidity61%
Visibility6.2 mi
Dew point71°
Mon, 1093° / 76°0Partly cloudy
93 °Partly cloudy

Olney, Monday, 10 August

Partly cloudy. High 93°, low 76°.

Pressure29.97 inHg
Wind15.8 mph SW
Humidity58%
Visibility6.2 mi
Dew point73°
Tue, 1192° / 76°0Partly cloudy
92 °Partly cloudy

Olney, Tuesday, 11 August

Partly cloudy. High 92°, low 76°.

Pressure29.91 inHg
Wind14.7 mph SW
Humidity54%
Visibility6.2 mi
Dew point72°
Wed, 1290° / 70°0.13Light rain
90 °Light rain

Olney, Wednesday, 12 August

Light rain. High 90°, low 70°.

Pressure29.83 inHg
Wind7 mph W
Humidity59%
Visibility6.2 mi
Dew point72°
Thu, 1382° / 71°1.28Rain
82 °Rain

Olney, Thursday, 13 August

Rain. High 82°, low 71°.

Pressure29.88 inHg
Wind13.7 mph SW
Humidity74%
Visibility—
Dew point72°
Fri, 1475° / 62°0.09Light rain
75 °Light rain

Olney, Friday, 14 August

Light rain. High 75°, low 62°.

Pressure30.12 inHg
Wind12.7 mph NE
Humidity57%
Visibility—
Dew point57°
Sat, 1576° / 55°0Partly cloudy
76 °Partly cloudy

Olney, Saturday, 15 August

Partly cloudy. High 76°, low 55°.

Pressure30.30 inHg
Wind7.6 mph E
Humidity56%
Visibility—
Dew point55°
Sun, 1679° / 58°0.02Light rain
79 °Light rain

Olney, Sunday, 16 August

Light rain. High 79°, low 58°.

Pressure30.21 inHg
Wind8.5 mph SE
Humidity55%
Visibility—
Dew point57°
Mon, 1786° / 67°0.12Light rain
86 °Light rain

Olney, Monday, 17 August

Light rain. High 86°, low 67°.

Pressure30.00 inHg
Wind14.3 mph S
Humidity72%
Visibility—
Dew point72°
Tue, 1885° / 70°0.01Light rain
85 °Light rain

Olney, Tuesday, 18 August

Light rain. High 85°, low 70°.

Pressure29.97 inHg
Wind8.9 mph N
Humidity73%
Visibility—
Dew point73°
Wed, 1989° / 70°0Partly cloudy
89 °Partly cloudy

Olney, Wednesday, 19 August

Partly cloudy. High 89°, low 70°.

Pressure29.94 inHg
Wind7.4 mph S
Humidity64%
Visibility—
Dew point70°
Thu, 2084° / 73°0.73Rain
84 °Rain

Olney, Thursday, 20 August

Rain. High 84°, low 73°.

Pressure29.88 inHg
Wind7.1 mph NW
Humidity76%
Visibility—
Dew point71°
Fri, 2180° / 69°0.01Light rain
80 °Light rain

Olney, Friday, 21 August

Light rain. High 80°, low 69°.

Pressure29.91 inHg
Wind10 mph NE
Humidity69%
Visibility—
Dew point68°
Sat, 2284° / 64°0Overcast
84 °Overcast

Olney, Saturday, 22 August

Overcast. High 84°, low 64°.

Pressure29.94 inHg
Wind15.8 mph NE
Humidity56%
Visibility—
Dew point62°
Sun, 2375° / 59°0.02Light rain
75 °Light rain

Olney, Sunday, 23 August

Light rain. High 75°, low 59°.

Pressure30.12 inHg
Wind13.5 mph NE
Humidity56%
Visibility—
Dew point54°

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.