As of 07:05 CDT

Weather in Mattoon, IL

58°

Mattoon, Wednesday, 7 October, 07:05

Clear. Feels like 56°. High 84°, low 54°.

Pressure29.94 inHg

Wind9.2 mph S

Humidity70%

Visibility6.2 mi

Dew point48°

See detailed hourly forecast

Thu, 0881° / 50°

81 °

Mattoon, Thursday, 8 October

Clear. High 81°, low 50°.

Pressure30.09 inHg

Wind7.2 mph W

Humidity30%

Visibility6.2 mi

Dew point44°

Fri, 0982° / 54°

82 °

Mattoon, Friday, 9 October

Clear. High 82°, low 54°.

Pressure30.18 inHg

Wind10.2 mph S

Humidity32%

Visibility6.2 mi

Dew point47°

Sat, 1081° / 61°

81 °

Mattoon, Saturday, 10 October

Overcast. High 81°, low 61°.

Pressure30.15 inHg

Wind8.6 mph S

Humidity38%

Visibility6.2 mi

Dew point54°

Sun, 1171° / 61°

0.49

71 °

Mattoon, Sunday, 11 October

Rain. High 71°, low 61°.

Pressure29.80 inHg

Wind12.4 mph E

Humidity73%

Visibility—

Dew point61°

Mon, 1285° / 58°

85 °

Mattoon, Monday, 12 October

Clear. High 85°, low 58°.

Pressure29.83 inHg

Wind12 mph SW

Humidity48%

Visibility—

Dew point58°

Tue, 1367° / 54°

0.08

67 °

Mattoon, Tuesday, 13 October

Light rain. High 67°, low 54°.

Pressure29.97 inHg

Wind14.6 mph N

Humidity64%

Visibility—

Dew point53°

Wed, 1468° / 44°

68 °

Mattoon, Wednesday, 14 October

Overcast. High 68°, low 44°.

Pressure30.09 inHg

Wind14.2 mph SE

Humidity41%

Visibility—

Dew point37°

Thu, 1589° / 58°

0.37

89 °

Mattoon, Thursday, 15 October

Rain. High 89°, low 58°.

Pressure29.80 inHg

Wind21.7 mph S

Humidity49%

Visibility—

Dew point61°

Fri, 1660° / 48°

0.04

60 °

Mattoon, Friday, 16 October

Light rain. High 60°, low 48°.

Pressure30.09 inHg

Wind16.4 mph NW

Humidity39%

Visibility—

Dew point32°

Sat, 1746° / 39°

46 °

Mattoon, Saturday, 17 October

Overcast. High 46°, low 39°.

Pressure30.24 inHg

Wind16 mph NW

Humidity53%

Visibility—

Dew point29°

Sun, 1854° / 34°

54 °

Mattoon, Sunday, 18 October

Clear. High 54°, low 34°.

Pressure30.30 inHg

Wind9.1 mph W

Humidity33%

Visibility—

Dew point22°

Mon, 1961° / 38°

61 °

Mattoon, Monday, 19 October

Partly cloudy. High 61°, low 38°.

Pressure30.30 inHg

Wind9.7 mph S

Humidity27%

Visibility—

Dew point22°

Tue, 2064° / 42°

64 °

Mattoon, Tuesday, 20 October

Mostly clear. High 64°, low 42°.

Pressure30.45 inHg

Wind6.2 mph E

Humidity26%

Visibility—

Dew point25°

Wed, 2164° / 45°

0.01

64 °

Mattoon, Wednesday, 21 October

Light rain. High 64°, low 45°.

Pressure30.30 inHg

Wind17.1 mph N

Humidity30%

Visibility—

Dew point29°

Thu, 2259° / 47°

0.11

59 °

Mattoon, Thursday, 22 October

Light rain. High 59°, low 47°.

Pressure30.12 inHg

Wind12 mph NW

Humidity52%

Visibility—

Dew point40°

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 Mattoon, 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 Mattoon, 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.