As of 06:57 CDT

Weather in Oak, IL

48°

Oak, Wednesday, 7 October, 06:57

Clear. Feels like 45°. High 84°, low 48°.

Pressure29.97 inHg

Wind6.9 mph S

Humidity98%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Thu, 0883° / 54°

83 °

Oak, Thursday, 8 October

Clear. High 83°, low 54°.

Pressure30.12 inHg

Wind6.3 mph E

Humidity32%

Visibility6.2 mi

Dew point46°

Fri, 0985° / 59°

85 °

Oak, Friday, 9 October

Clear. High 85°, low 59°.

Pressure30.15 inHg

Wind7.3 mph SE

Humidity29%

Visibility6.2 mi

Dew point46°

Sat, 1078° / 61°

0.61

78 °

Oak, Saturday, 10 October

Heavy rain. High 78°, low 61°.

Pressure30.09 inHg

Wind5.7 mph E

Humidity46%

Visibility6.2 mi

Dew point56°

Sun, 1170° / 63°

0.33

70 °

Oak, Sunday, 11 October

Rain. High 70°, low 63°.

Pressure29.80 inHg

Wind13 mph E

Humidity84%

Visibility—

Dew point61°

Mon, 1284° / 59°

84 °

Oak, Monday, 12 October

Clear. High 84°, low 59°.

Pressure29.91 inHg

Wind10.6 mph SW

Humidity52%

Visibility—

Dew point60°

Tue, 1383° / 63°

0.01

83 °

Oak, Tuesday, 13 October

Light rain. High 83°, low 63°.

Pressure29.91 inHg

Wind11.7 mph N

Humidity43%

Visibility—

Dew point56°

Wed, 1474° / 54°

74 °

Oak, Wednesday, 14 October

Overcast. High 74°, low 54°.

Pressure30.06 inHg

Wind10.6 mph E

Humidity42%

Visibility—

Dew point44°

Thu, 1589° / 62°

0.06

89 °

Oak, Thursday, 15 October

Light rain. High 89°, low 62°.

Pressure29.88 inHg

Wind15.5 mph S

Humidity47%

Visibility—

Dew point63°

Fri, 1669° / 52°

0.76

69 °

Oak, Friday, 16 October

Rain. High 69°, low 52°.

Pressure30.09 inHg

Wind13.5 mph N

Humidity40%

Visibility—

Dew point38°

Sat, 1753° / 40°

53 °

Oak, Saturday, 17 October

Clear. High 53°, low 40°.

Pressure30.21 inHg

Wind14.1 mph NW

Humidity40%

Visibility—

Dew point28°

Sun, 1856° / 35°

56 °

Oak, Sunday, 18 October

Clear. High 56°, low 35°.

Pressure30.33 inHg

Wind7.3 mph NW

Humidity35%

Visibility—

Dew point25°

Mon, 1963° / 38°

63 °

Oak, Monday, 19 October

Overcast. High 63°, low 38°.

Pressure30.30 inHg

Wind5.6 mph S

Humidity29%

Visibility—

Dew point26°

Tue, 2065° / 42°

65 °

Oak, Tuesday, 20 October

Overcast. High 65°, low 42°.

Pressure30.42 inHg

Wind6.9 mph NE

Humidity30%

Visibility—

Dew point29°

Wed, 2168° / 43°

68 °

Oak, Wednesday, 21 October

Overcast. High 68°, low 43°.

Pressure30.30 inHg

Wind10 mph N

Humidity29%

Visibility—

Dew point31°

Thu, 2259° / 48°

0.11

59 °

Oak, Thursday, 22 October

Light rain. High 59°, low 48°.

Pressure30.15 inHg

Wind11.5 mph NW

Humidity53%

Visibility—

Dew point41°

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 Oak, 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 Oak, 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.