As of 14:30 CDT

Weather in Lester, IL

57°

Lester, Friday, 16 October, 14:30

Overcast. Feels like 55°. High 63°, low 51°.

Pressure30.18 inHg

Wind15.1 mph NW

Humidity54%

Visibility6.2 mi

Dew point41°

See detailed hourly forecast

Sat, 1761° / 42°

61 °

Lester, Saturday, 17 October

Clear. High 61°, low 42°.

Pressure30.56 inHg

Wind4.9 mph NE

Humidity52%

Visibility6.2 mi

Dew point38°

Sun, 1863° / 40°

63 °

Lester, Sunday, 18 October

Clear. High 63°, low 40°.

Pressure30.53 inHg

Wind6.8 mph S

Humidity45%

Visibility6.2 mi

Dew point37°

Mon, 1968° / 42°

68 °

Lester, Monday, 19 October

Clear. High 68°, low 42°.

Pressure30.39 inHg

Wind2.4 mph SE

Humidity45%

Visibility6.2 mi

Dew point42°

Tue, 2070° / 44°

70 °

Lester, Tuesday, 20 October

Clear. High 70°, low 44°.

Pressure30.33 inHg

Wind3.4 mph E

Humidity46%

Visibility6.2 mi

Dew point44°

Wed, 2171° / 48°

71 °

Lester, Wednesday, 21 October

Clear. High 71°, low 48°.

Pressure30.27 inHg

Wind5.3 mph E

Humidity38%

Visibility—

Dew point40°

Thu, 2277° / 51°

77 °

Lester, Thursday, 22 October

Overcast. High 77°, low 51°.

Pressure30.15 inHg

Wind6.3 mph SW

Humidity22%

Visibility—

Dew point31°

Fri, 2376° / 56°

76 °

Lester, Friday, 23 October

Clear. High 76°, low 56°.

Pressure30.15 inHg

Wind10.7 mph E

Humidity35%

Visibility—

Dew point43°

Sat, 2470° / 50°

70 °

Lester, Saturday, 24 October

Overcast. High 70°, low 50°.

Pressure30.24 inHg

Wind8.8 mph E

Humidity43%

Visibility—

Dew point42°

Sun, 2570° / 49°

70 °

Lester, Sunday, 25 October

Overcast. High 70°, low 49°.

Pressure30.18 inHg

Wind7.7 mph E

Humidity30%

Visibility—

Dew point34°

Mon, 2677° / 52°

77 °

Lester, Monday, 26 October

Overcast. High 77°, low 52°.

Pressure30.12 inHg

Wind9.2 mph S

Humidity26%

Visibility—

Dew point34°

Tue, 2771° / 56°

71 °

Lester, Tuesday, 27 October

Overcast. High 71°, low 56°.

Pressure30.21 inHg

Wind7.1 mph NW

Humidity46%

Visibility—

Dew point47°

Wed, 2874° / 60°

74 °

Lester, Wednesday, 28 October

Overcast. High 74°, low 60°.

Pressure30.09 inHg

Wind11.1 mph S

Humidity47%

Visibility—

Dew point50°

Thu, 2981° / 61°

0.03

81 °

Lester, Thursday, 29 October

Light rain. High 81°, low 61°.

Pressure30.00 inHg

Wind16.3 mph S

Humidity43%

Visibility—

Dew point53°

Fri, 3080° / 62°

0.12

80 °

Lester, Friday, 30 October

Light rain. High 80°, low 62°.

Pressure30.06 inHg

Wind9.3 mph NE

Humidity54%

Visibility—

Dew point58°

Sat, 3167° / 63°

0.01

67 °

Lester, Saturday, 31 October

Light rain. High 67°, low 63°.

Pressure30.03 inHg

Wind16.2 mph E

Humidity63%

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 Lester, 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 Lester, 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.