As of 15:00 CDT

Weather in Lyndon, IL

77°

Lyndon, Tuesday, 13 October, 15:00

Clear. Feels like 77°. High 77°, low 65°.

Pressure29.85 inHg

Wind4.5 mph W

Humidity61%

Visibility6.2 mi

Dew point62°

See detailed hourly forecast

Wed, 1475° / 59°

0.13

75 °

Lyndon, Wednesday, 14 October

Rain. High 75°, low 59°.

Pressure30.09 inHg

Wind8.3 mph NE

Humidity61%

Visibility6.2 mi

Dew point55°

Thu, 1564° / 57°

1.28

64 °

Lyndon, Thursday, 15 October

Heavy rain. High 64°, low 57°.

Pressure29.97 inHg

Wind7.5 mph E

Humidity95%

Visibility1.2 mi

Dew point58°

Fri, 1657° / 47°

0.03

57 °

Lyndon, Friday, 16 October

Light rain. High 57°, low 47°.

Pressure30.18 inHg

Wind21.9 mph NW

Humidity61%

Visibility6.2 mi

Dew point40°

Sat, 1757° / 39°

57 °

Lyndon, Saturday, 17 October

Clear. High 57°, low 39°.

Pressure30.50 inHg

Wind6.5 mph SW

Humidity51%

Visibility6.2 mi

Dew point35°

Sun, 1864° / 44°

64 °

Lyndon, Sunday, 18 October

Overcast. High 64°, low 44°.

Pressure30.24 inHg

Wind14.1 mph SW

Humidity49%

Visibility—

Dew point40°

Mon, 1962° / 50°

0.17

62 °

Lyndon, Monday, 19 October

Light rain. High 62°, low 50°.

Pressure30.18 inHg

Wind7.8 mph S

Humidity76%

Visibility—

Dew point51°

Tue, 2058° / 56°

0.11

58 °

Lyndon, Tuesday, 20 October

Light rain. High 58°, low 56°.

Pressure30.27 inHg

Wind9 mph SE

Humidity81%

Visibility—

Dew point52°

Wed, 2165° / 57°

0.06

65 °

Lyndon, Wednesday, 21 October

Light rain. High 65°, low 57°.

Pressure30.18 inHg

Wind11.3 mph SE

Humidity91%

Visibility—

Dew point60°

Thu, 2269° / 65°

1.78

69 °

Lyndon, Thursday, 22 October

Heavy rain. High 69°, low 65°.

Pressure29.97 inHg

Wind18.6 mph S

Humidity87%

Visibility—

Dew point63°

Fri, 2373° / 57°

0.04

73 °

Lyndon, Friday, 23 October

Light rain. High 73°, low 57°.

Pressure29.85 inHg

Wind23.9 mph S

Humidity69%

Visibility—

Dew point61°

Sat, 2458° / 46°

58 °

Lyndon, Saturday, 24 October

Overcast. High 58°, low 46°.

Pressure30.33 inHg

Wind14.1 mph W

Humidity50%

Visibility—

Dew point38°

Sun, 2559° / 45°

59 °

Lyndon, Sunday, 25 October

Clear. High 59°, low 45°.

Pressure30.27 inHg

Wind12.5 mph SW

Humidity43%

Visibility—

Dew point34°

Mon, 2652° / 41°

52 °

Lyndon, Monday, 26 October

Clear. High 52°, low 41°.

Pressure30.24 inHg

Wind16 mph NW

Humidity57%

Visibility—

Dew point34°

Tue, 2751° / 38°

0.01

51 °

Lyndon, Tuesday, 27 October

Light rain. High 51°, low 38°.

Pressure30.27 inHg

Wind7.1 mph S

Humidity59%

Visibility—

Dew point33°

Wed, 2854° / 46°

0.07

54 °

Lyndon, Wednesday, 28 October

Light rain. High 54°, low 46°.

Pressure30.00 inHg

Wind13.2 mph S

Humidity60%

Visibility—

Dew point39°

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 Lyndon, 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 Lyndon, 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.