MATTOON, IL 61938 Weather Forecast & Current Conditions

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61938 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
MATTOON, IL Current Weather
3:53 PM CDT MAY 17, 2026
Scattered Clouds 81°F
Feels Like:	83°F
Dewpoint:	64°F
Rel. Hum.:	56%
Visibility:	10 miles
Wind:	S at 12 mph, gusts to 24
Pressure:	29.90 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

61938 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	MATTOON, IL 61938 Weather Forecast	Snowfall Forecast pages Snow Depth pages

THIS AFTERNOON
Partly sunny. Near steady temperature in the mid 80s. South winds 15 to 20 mph with gusts up to 30 mph.

TONIGHT
Mostly clear. Lows in the upper 60s. South winds 10 to 15 mph with gusts up to 30 mph.

MONDAY
Mostly sunny with a chance of showers and thunderstorms in the morning, then mostly cloudy with showers and thunderstorms likely in the afternoon. Highs in the lower 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent.

MONDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 60s. South winds around 15 mph with gusts up to 30 mph. Chance of rain 40 percent.

TUESDAY
Partly sunny with a chance of showers and thunderstorms in the morning, then mostly cloudy with showers with thunderstorms likely in the afternoon. Highs in the lower 80s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 80 percent.

TUESDAY NIGHT
Showers with thunderstorms likely in the evening, then a chance of showers after midnight. Cooler with lows in the upper 50s. Chance of rain 80 percent.

WEDNESDAY AND WEDNESDAY NIGHT
Mostly cloudy. Highs in the upper 60s. Lows in the mid 40s.

THURSDAY
Mostly sunny. Highs in the upper 60s.

THURSDAY NIGHT AND FRIDAY
Mostly cloudy. Lows in the lower 50s. Highs in the lower 70s.

FRIDAY NIGHT AND SATURDAY
Mostly cloudy. A chance of showers. Lows in the upper 50s. Highs in the upper 70s. Chance of rain 30 percent.

61938 WEATHER SATELLITE LOOPS

Visible Weather Satellite
MATTOON, IL 61938

Infrared Weather Satellite
MATTOON, IL 61938

61938 WEATHER RADAR LOOP

NEXRAD Weather Radar
MATTOON, IL 61938

MOS COMPUTER WEATHER FORECAST

MATTOON, IL 3 hourly weather forecast

weather forecast created 8:00 AM EDT 5/17/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
17 MAY 2026

1 PM

82°

84°

Mostly Cloudy

1%

0% Thunder
( 12% severe)

S 17

56%

65°

High 85°

4 PM

84°

85°

Partly Cloudy

S 18

48%

62°

Decreasing Clouds

Breezy

7 PM

80°

81°

Partly Cloudy

0%

0% Thunder
( 7% severe)

S 15

51%

60°

10 PM

73°

73°

Clear

S 15

55%

56°

Monday
18 MAY 2026

1 AM

71°

71°

Clear

10%
RAIN
<.01 in

0% Thunder
( 23% severe)

S 14

57%

55°

Low 68°

4 AM

69°

69°

Partly Cloudy

S 15

61%

55°

High 83°

7 AM

69°

69°

Partly Cloudy

41%
RAIN
***

0% Thunder
( 29% severe)

S 16

73%

60°

Mostly Cloudy

Rain Likely

Breezy

10 AM

77°

79°

Partly Cloudy

SSW 20

69%

66°

1 PM

80°

83°

Mostly Cloudy

66%
RAIN
***

0% Thunder
( 62% severe)

SW 20

67%

68°

4 PM

79°

81°

Mostly Cloudy

SSW 18

67%

67°

7 PM

76°

78°

Mostly Cloudy

18%
RAIN
.01–.1 in

0% Thunder
( 28% severe)

S 16

69%

65°

10 PM

73°

73°

Mostly Cloudy

S 16

76%

65°

Tuesday
19 MAY 2026

1 AM

72°

72°

Partly Cloudy

11%
RAIN
<.01 in

0% Thunder
( 18% severe)

S 15

76%

64°

Low 69°

4 AM

71°

71°

Partly Cloudy

S 16

76%

63°

High 82°

7 AM

72°

72°

Partly Cloudy

47%
RAIN
.01–.1 in

0% Thunder
( 24% severe)

S 17

79%

65°

Mostly Cloudy

Rain Likely

Breezy

10 AM

77°

79°

Mostly Cloudy

SSW 20

74%

68°

1 PM

80°

83°

Mostly Cloudy

77%
RAIN
***

0% Thunder
( 54% severe)

SW 20

69%

69°

4 PM

78°

80°

Mostly Cloudy

SW 16

67%

66°

7 PM

74°

74°

Mostly Cloudy

W 12

71%

64°


MATTOON, IL extended weather forecast
Wednesday 20 MAY 2026	Thursday 21 MAY 2026	Friday 22 MAY 2026	Saturday 23 MAY 2026	Sunday 24 MAY 2026
Low 52°	Low 47°	Low 59°	Low 53°	Low 61°
High 66°	High 72°	High 78°	High 76°	High 82°

Mostly Cloudy 42% Rain	Mostly Cloudy 31% Rain	Overcast 41% Rain	Mostly Cloudy 34% Rain	Overcast 46% Rain

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