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As of 17:14 CDT

Weather in Mattoon, WI

81°Current weather

Mattoon, Saturday, 8 August, 17:14

Clear. Feels like 81°. High 81°, low 60°.

Pressure29.97 inHg
Wind10.5 mph W
Humidity45%
Visibility6.2 mi
Dew point56°
Sun, 0980° / 62°0.09Light rain
80 °Light rain

Mattoon, Sunday, 9 August

Light rain. High 80°, low 62°.

Pressure29.88 inHg
Wind8.7 mph SW
Humidity62%
Visibility6.2 mi
Dew point61°
Mon, 1089° / 61°0Mostly clear
89 °Mostly clear

Mattoon, Monday, 10 August

Mostly clear. High 89°, low 61°.

Pressure29.91 inHg
Wind3.2 mph SW
Humidity38%
Visibility6.2 mi
Dew point55°
Tue, 1185° / 60°0.22Rain
85 °Rain

Mattoon, Tuesday, 11 August

Rain. High 85°, low 60°.

Pressure29.83 inHg
Wind6 mph SE
Humidity56%
Visibility6.2 mi
Dew point61°
Wed, 1284° / 59°0.05Light rain
84 °Light rain

Mattoon, Wednesday, 12 August

Light rain. High 84°, low 59°.

Pressure29.83 inHg
Wind8.9 mph NW
Humidity30%
Visibility6.2 mi
Dew point47°
Thu, 1375° / 54°0.01Light rain
75 °Light rain

Mattoon, Thursday, 13 August

Light rain. High 75°, low 54°.

Pressure29.97 inHg
Wind10 mph N
Humidity32%
Visibility—
Dew point39°
Fri, 1478° / 49°0Clear
78 °Clear

Mattoon, Friday, 14 August

Clear. High 78°, low 49°.

Pressure30.18 inHg
Wind6.8 mph N
Humidity30%
Visibility—
Dew point38°
Sat, 1577° / 55°0Overcast
77 °Overcast

Mattoon, Saturday, 15 August

Overcast. High 77°, low 55°.

Pressure30.27 inHg
Wind9 mph SW
Humidity35%
Visibility—
Dew point44°
Sun, 1686° / 57°0.01Light rain
86 °Light rain

Mattoon, Sunday, 16 August

Light rain. High 86°, low 57°.

Pressure30.06 inHg
Wind12.5 mph SW
Humidity41%
Visibility—
Dew point53°
Mon, 1781° / 65°0.2Light rain
81 °Light rain

Mattoon, Monday, 17 August

Light rain. High 81°, low 65°.

Pressure30.00 inHg
Wind9.5 mph NE
Humidity93%
Visibility—
Dew point67°
Tue, 1875° / 57°0.09Light rain
75 °Light rain

Mattoon, Tuesday, 18 August

Light rain. High 75°, low 57°.

Pressure30.06 inHg
Wind7.2 mph W
Humidity54%
Visibility—
Dew point54°
Wed, 1968° / 62°0.24Rain
68 °Rain

Mattoon, Wednesday, 19 August

Rain. High 68°, low 62°.

Pressure29.94 inHg
Wind8 mph SE
Humidity84%
Visibility—
Dew point61°
Thu, 2084° / 58°0Clear
84 °Clear

Mattoon, Thursday, 20 August

Clear. High 84°, low 58°.

Pressure29.94 inHg
Wind8.6 mph N
Humidity34%
Visibility—
Dew point47°
Fri, 2177° / 52°0Overcast
77 °Overcast

Mattoon, Friday, 21 August

Overcast. High 77°, low 52°.

Pressure30.00 inHg
Wind7.3 mph NE
Humidity30%
Visibility—
Dew point40°
Sat, 2267° / 45°0.34Rain
67 °Rain

Mattoon, Saturday, 22 August

Rain. High 67°, low 45°.

Pressure30.06 inHg
Wind13 mph NE
Humidity30%
Visibility—
Dew point32°
Sun, 2368° / 40°0Overcast
68 °Overcast

Mattoon, Sunday, 23 August

Overcast. High 68°, low 40°.

Pressure30.27 inHg
Wind6.1 mph NE
Humidity33%
Visibility—
Dew point34°

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, WI 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, WI 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.