DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
2:54 AM CDT APR 17, 2026
Clear 61°F
Feels Like:	60°F
Dewpoint:	57°F
Rel. Hum.:	87%
Visibility:	10 miles
Wind:	SSW at 7 mph
Pressure:	29.92 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 TONIGHT
Mostly clear. Near steady temperature in the upper 50s. South winds around 5 mph.

FRIDAY
Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 20 percent.

FRIDAY NIGHT
Showers with thunderstorms likely. Cooler with lows in the mid 40s. South winds around 20 mph, becoming west 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 mid 50s. Northwest winds around 20 mph with gusts up to 30 mph. Chance of rain 50 percent.

SATURDAY NIGHT
Mostly clear. Patchy frost after midnight. Cooler with lows in the mid 30s. Northwest winds 15 to 20 mph, becoming west 5 to 10 mph after midnight.

SUNDAY AND SUNDAY NIGHT
Mostly clear. Patchy frost in the morning. Patchy frost after midnight. Highs in the upper 50s. Lows in the mid 30s.

MONDAY
Patchy frost in the morning. Sunny. 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. Not as cool with highs in the mid 70s.

TUESDAY NIGHT THROUGH WEDNESDAY NIGHT
Mostly clear. Lows in the mid 50s. Highs in the upper 70s.

THURSDAY
Mostly sunny. Highs in the lower 80s.

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 4/16/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Friday
17 APR 2026

1 AM

60°

60°

Clear

0%

0% Thunder
( 3% severe)

S 5

78%

53°

Low 57°

4 AM

58°

57°

Clear

S 6

83%

53°

High 83°

7 AM

58°

56°

Mostly Cloudy

4%

0% Thunder
( 14% severe)

SSE 8

90%

55°

Mostly Cloudy

Chance of Rain

10 AM

71°

71°

Mostly Cloudy

S 13

71%

61°

1 PM

79°

81°

Partly Cloudy

46%
RAIN
1–2 in

0% Thunder
( 39% severe)

S 18

58%

63°

4 PM

81°

82°

Mostly Cloudy

S 20

54%

63°

7 PM

75°

75°

Mostly Cloudy

82%
RAIN
***

0% Thunder
( 48% severe)

S 17

64%

62°

10 PM

71°

71°

Mostly Cloudy

S 17

71%

61°

Saturday
18 APR 2026

1 AM

66°

66°

Mostly Cloudy

90%
RAIN
***

0% Thunder
( 31% severe)

WSW 17

75%

58°

Low 48°

4 AM

60°

57°

Mostly Cloudy

W 16

84%

55°

High 56°

7 AM

51°

45°

Mostly Cloudy

42%
RAIN
.25–.5 in

0% Thunder
( 5% severe)

NW 17

83%

46°

Mostly Cloudy

Chance of Rain

Breezy

10 AM

49°

43°

Mostly Cloudy

NW 18

68%

39°

1 PM

51°

45°

Partly Cloudy

21%
RAIN
.01–.1 in

0% Thunder
( 1% severe)

NW 20

54%

35°

4 PM

53°

48°

Partly Cloudy

NW 20

45%

32°

7 PM

50°

44°

Partly Cloudy

8%

0% Thunder
( 0% severe)

NW 16

46%

30°

10 PM

45°

39°

Clear

NW 13

55%

30°


DECATUR, IL extended weather forecast
Sunday 19 APR 2026	Monday 20 APR 2026	Tuesday 21 APR 2026	Wednesday 22 APR 2026	Thursday 23 APR 2026
Low 37°	Low 38°	Low 49°	Low 53°	Low 55°
High 65°	High 65°	High 74°	High 75°	High 75°

Partly Cloudy 20% Rain	Partly Cloudy 5% Rain	Mostly Cloudy 27% Rain	Partly Cloudy 42% Rain	Partly Cloudy 25% Rain

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