OSCEOLA, IL 61421 Weather Forecast & Current Conditions

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61421 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
LACON/MARSHALL CNTY, IL Current Weather
1:35 AM CDT JUN 9, 2026
Overcast 72°F
Feels Like:	72°F
Dewpoint:	70°F
Rel. Hum.:	93%
Visibility:	10 miles
Wind:	SW at 6 mph
Pressure:	29.93 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Weather Map

(Automated weather data from NWS/FAA)

61421 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	OSCEOLA, IL 61421 Weather Forecast	Snowfall Forecast pages Snow Depth pages

REST OF TONIGHT
Mostly cloudy. Near steady temperature in the lower 70s. Southwest winds around 5 mph.

TUESDAY
Partly sunny. Warmer with highs in the upper 80s. Southwest winds 5 to 10 mph.

TUESDAY NIGHT
Partly cloudy with a chance of showers and thunderstorms. Humid with lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 40 percent.

WEDNESDAY
Sunny with highs in the lower 90s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 101.

WEDNESDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent.

THURSDAY
Mostly sunny. A chance of showers in the morning, then showers with a chance of thunderstorms in the afternoon. Highs around 90. Chance of rain 90 percent.

THURSDAY NIGHT
Showers and thunderstorms likely in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of rain 70 percent.

FRIDAY
Sunny. Highs in the lower 80s.

FRIDAY NIGHT
Clear. Lows in the lower 60s.

SATURDAY
Sunny. Highs in the mid 80s.

SATURDAY NIGHT
Mostly clear with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of rain 30 percent.

SUNDAY
Mostly sunny. Highs in the upper 70s.

SUNDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 30 percent.

61421 WEATHER SATELLITE LOOPS

Visible Weather Satellite
OSCEOLA, IL 61421

Infrared Weather Satellite
OSCEOLA, IL 61421

61421 WEATHER RADAR LOOP

NEXRAD Weather Radar
OSCEOLA, IL 61421

MOS COMPUTER WEATHER FORECAST

LACON/MARSHALL CNTY, IL 3 hourly weather forecast

weather forecast created 7:00 PM CDT 6/ 8/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
9 JUN 2026

1 AM

72°

72°

Partly Cloudy

13%
RAIN
.01–.1 in

0% Thunder
( 14% severe)

CALM

84%

67°

Low 71°

4 AM

72°

72°

Mostly Cloudy

SSW 2

87%

68°

High 90°

7 AM

72°

72°

Mostly Cloudy

7%

0% Thunder
( 18% severe)

SW 3

87%

68°

Mostly Cloudy

10 AM

79°

82°

Mostly Cloudy

WSW 6

74%

70°

1 PM

86°

91°

Mostly Cloudy

8%

0% Thunder
( 36% severe)

WSW 7

61%

71°

4 PM

90°

96°

Partly Cloudy

WSW 8

52%

70°

7 PM

88°

95°

Partly Cloudy

22%
RAIN
<.01 in

0% Thunder
( 36% severe)

W 2

59%

72°

10 PM

80°

83°

Partly Cloudy

S 1

72%

70°

Wednesday
10 JUN 2026

1 AM

77°

79°

Partly Cloudy

24%
RAIN
.25–.5 in

0% Thunder
( 25% severe)

S 6

79%

70°

Low 72°

4 AM

76°

77°

Partly Cloudy

SSW 7

82%

70°

High 91°

7 AM

76°

77°

Partly Cloudy

1%

0% Thunder
( 18% severe)

SSW 9

82%

70°

Partly Cloudy

10 AM

83°

88°

Partly Cloudy

SW 13

67%

71°

1 PM

90°

96°

Clear

11%
RAIN
<.01 in

0% Thunder
( 45% severe)

SSW 14

54%

71°

4 PM

91°

97°

Partly Cloudy

SSW 16

50%

70°

7 PM

88°

93°

Partly Cloudy

48%
RAIN
***

0% Thunder
( 37% severe)

SSW 15

54%

69°

10 PM

82°

85°

Partly Cloudy

SSW 12

63%

68°


LACON/MARSHALL CNTY, IL extended weather forecast
Thursday 11 JUN 2026	Friday 12 JUN 2026	Saturday 13 JUN 2026	Sunday 14 JUN 2026	Monday 15 JUN 2026
Low 72°	Low 59°	Low 55°	Low 60°	Low 59°
High 86°	High 80°	High 83°	High 77°	High 76°

Overcast 84% Rain	Mostly Cloudy 63% Rain	Clear 9% Rain	Overcast 51% Rain	Overcast 48% Rain

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