DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
8:54 PM CDT JUN 23, 2026
Broken Clouds 72°F
Feels Like:	72°F
Dewpoint:	55°F
Rel. Hum.:	55%
Visibility:	10 miles
Wind:	Calm
Pressure:	30.18 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

62521 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	DECATUR, IL 62521 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Partly cloudy. Lows in the upper 50s. East winds around 5 mph, becoming southeast around 5 mph after midnight.

WEDNESDAY
Sunny in the morning, then partly sunny with a chance of thunderstorms with a slight chance of showers in the afternoon. Highs in the upper 70s. South winds 5 to 10 mph. Chance of rain 30 percent.

WEDNESDAY NIGHT
Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the lower 60s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.

THURSDAY
Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Southwest winds around 5 mph. Chance of rain 50 percent.

THURSDAY NIGHT
A chance of thunderstorms in the evening. Showers likely. Lows in the lower 60s. Northeast winds around 5 mph. Chance of rain 70 percent.

FRIDAY
Showers likely in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70 percent.

FRIDAY NIGHT
A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 50 percent.

SATURDAY
Partly sunny. Highs in the mid 80s.

SATURDAY NIGHT
Partly cloudy. A chance of showers after midnight. Lows in the lower 70s. Chance of rain 40 percent.

SUNDAY
Mostly sunny. Highs in the upper 80s. Heat index values up to 100 in the afternoon.

SUNDAY NIGHT THROUGH TUESDAY
Mostly clear. Lows in the mid 70s. Highs in the lower 90s.

62521 WEATHER SATELLITE LOOPS

Visible Weather Satellite
DECATUR, IL 62521

Infrared Weather Satellite
DECATUR, IL 62521

62521 WEATHER RADAR LOOP

NEXRAD Weather Radar
DECATUR, IL 62521

MOS COMPUTER WEATHER FORECAST

DECATUR, IL 3 hourly weather forecast

weather forecast created 8:00 AM EDT 6/23/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
23 JUN 2026

1 PM

74°

74°

Clear

0%

0% Thunder
( 3% severe)

N 7

51%

55°

High 77°

4 PM

76°

78°

Partly Cloudy

N 6

46%

54°

Increasing Clouds

7 PM

74°

74°

Partly Cloudy

2%

0% Thunder
( 4% severe)

NE 3

53%

56°

10 PM

65°

65°

Mostly Cloudy

ESE 2

70%

55°

Wednesday
24 JUN 2026

1 AM

61°

62°

Mostly Cloudy

3%

0% Thunder
( 3% severe)

SE 3

81%

55°

Low 57°

4 AM

60°

60°

Partly Cloudy

SSE 5

84%

55°

High 79°

7 AM

63°

63°

Partly Cloudy

4%

0% Thunder
( 8% severe)

SSE 7

81%

57°

Partly Cloudy

Chance of Rain

10 AM

72°

72°

Partly Cloudy

S 9

66%

60°

1 PM

76°

78°

Partly Cloudy

25%
RAIN
.1–.25 in

0% Thunder
( 40% severe)

SSW 10

60%

61°

4 PM

78°

80°

Mostly Cloudy

SSW 12

60%

63°

7 PM

76°

78°

Partly Cloudy

46%
RAIN
***

0% Thunder
( 40% severe)

SW 9

64%

63°

10 PM

69°

69°

Mostly Cloudy

SW 6

84%

64°

Thursday
25 JUN 2026

1 AM

66°

66°

Mostly Cloudy

7%

0% Thunder
( 10% severe)

WSW 5

90%

63°

Low 63°

4 AM

65°

65°

Mostly Cloudy

WSW 5

93%

63°

High 81°

7 AM

67°

67°

Mostly Cloudy

7%

0% Thunder
( 6% severe)

SW 5

93%

65°

Mostly Cloudy

Chance of Rain

10 AM

75°

75°

Mostly Cloudy

WSW 3

74%

66°

1 PM

79°

81°

Mostly Cloudy

46%
RAIN
>2 in

0% Thunder
( 20% severe)

WSW 6

60%

64°

4 PM

80°

81°

Mostly Cloudy

W 6

56%

63°

7 PM

77°

79°

Mostly Cloudy

N 6

62%

63°


DECATUR, IL extended weather forecast
Friday 26 JUN 2026	Saturday 27 JUN 2026	Sunday 28 JUN 2026	Monday 29 JUN 2026	Tuesday 30 JUN 2026
Low 62°	Low 69°	Low 71°	Low 73°	Low 73°
High 79°	High 88°	High 92°	High 93°	High 92°

Overcast 70% Rain	Overcast 57% Rain	Partly Cloudy 32% Rain	Partly Cloudy 23% Rain	Partly Cloudy 28% Rain

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