DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
10:54 AM CDT APR 16, 2026
Clear 70°F
Feels Like:	70°F
Dewpoint:	59°F
Rel. Hum.:	68%
Visibility:	10 miles
Wind:	WSW at 16 mph, gusts to 25
Pressure:	29.88 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Weather Map

(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

REST OF TODAY
Sunny. Highs in the upper 70s. West winds 10 to 15 mph with gusts up to 25 mph.

TONIGHT
Mostly clear. Lows in the mid 50s. Southwest winds 5 to 10 mph, becoming south after midnight.

FRIDAY
Mostly sunny. A chance of showers in the afternoon. Highs in the mid 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 30 percent.

FRIDAY NIGHT
Showers. Thunderstorms likely, mainly in the evening. Lows in the upper 40s. South winds around 20 mph, becoming southwest after midnight. Chance of rain 90 percent.

SATURDAY
Mostly cloudy with a chance of showers in the morning, then mostly sunny in the afternoon. Much cooler. Less humid with highs in the upper 50s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent.

SATURDAY NIGHT AND SUNDAY
Mostly clear. Patchy frost through the day. Lows in the mid 30s. Highs in the upper 50s.

SUNDAY NIGHT AND MONDAY
Mostly clear. Lows in the upper 30s. Highs in the mid 60s.

MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Not as cool with lows in the upper 40s.

TUESDAY
Mostly sunny. Highs in the lower 70s.

TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 50s.

WEDNESDAY
Mostly sunny. Highs in the mid 70s.

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 PM EDT 4/15/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
16 APR 2026

1 AM

66°

66°

Mostly Cloudy

67%
RAIN
1–2 in

0% Thunder
( 20% severe)

SW 14

81%

60°

Low 60°

4 AM

63°

62°

Mostly Cloudy

SSW 13

84%

58°

High 79°

7 AM

61°

59°

Mostly Cloudy

7%

0% Thunder
( 4% severe)

SW 12

87%

57°

Decreasing Clouds

10 AM

68°

68°

Partly Cloudy

WSW 14

70%

58°

1 PM

75°

75°

Partly Cloudy

8%

0% Thunder
( 4% severe)

W 16

48%

54°

4 PM

78°

78°

Clear

W 14

36%

49°

7 PM

74°

74°

Clear

3%

0% Thunder
( 2% severe)

WNW 7

43%

50°

10 PM

65°

65°

Clear

SSE 5

60%

51°

Friday
17 APR 2026

1 AM

60°

60°

Clear

1%

0% Thunder
( 2% severe)

SSE 5

75%

52°

Low 56°

4 AM

58°

57°

Partly Cloudy

SSE 6

80%

52°

High 83°

7 AM

57°

55°

Partly Cloudy

2%

0% Thunder
( 6% severe)

SSE 8

90%

54°

Partly Cloudy

Chance of Rain

10 AM

71°

71°

Mostly Cloudy

S 13

68%

60°

1 PM

79°

80°

Partly Cloudy

29%
RAIN
<.01 in

0% Thunder
( 20% severe)

S 17

54%

61°

4 PM

82°

82°

Partly Cloudy

S 20

46%

59°

7 PM

77°

79°

Mostly Cloudy

74%
RAIN
***

0% Thunder
( 48% severe)

S 17

56%

60°

10 PM

71°

71°

Mostly Cloudy

S 17

68%

60°


DECATUR, IL extended weather forecast
Saturday 18 APR 2026	Sunday 19 APR 2026	Monday 20 APR 2026	Tuesday 21 APR 2026	Wednesday 22 APR 2026
Low 49°	Low 35°	Low 36°	Low 50°	Low 52°
High 56°	High 59°	High 65°	High 71°	High 72°

Overcast 75% Rain	Partly Cloudy 10% Rain	Clear 6% Rain	Mostly Cloudy 26% Rain	Mostly Cloudy 38% Rain

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