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 SEP 13, 2026
Clear 64°F
Feels Like:	63°F
Dewpoint:	52°F
Rel. Hum.:	65%
Visibility:	10 miles
Wind:	N at 12 mph, gusts to 22
Pressure:	30.15 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 2026 Hurricanes	DECATUR, IL 62521 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Mostly cloudy this evening, then becoming partly cloudy. Lows in the upper 50s. Northeast winds around 10 mph.

MONDAY
Mostly sunny. Highs in the lower 80s. East winds 10 to 15 mph.

MONDAY NIGHT
Mostly clear. Not as cool with lows in the upper 60s. Southeast winds around 15 mph with gusts up to 25 mph.

TUESDAY
Sunny. A chance of showers and thunderstorms in the afternoon. Much warmer with highs in the mid 90s. South winds around 15 mph, becoming southwest in the afternoon. Chance of rain 50 percent. Heat index values up to 103 in the afternoon.

TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Southwest winds 5 to 10 mph, becoming northeast after midnight. Chance of rain 50 percent.

WEDNESDAY
Mostly sunny. A chance of showers in the morning. Highs around 90. Chance of rain 50 percent.

WEDNESDAY NIGHT AND THURSDAY
Partly cloudy. A chance of showers. Lows in the lower 70s. Highs in the upper 80s. Chance of rain 40 percent.

THURSDAY NIGHT THROUGH FRIDAY NIGHT
Partly cloudy. Lows in the mid 60s. Highs in the mid 80s.

SATURDAY
Mostly sunny. A chance of showers in the afternoon. Highs in the upper 80s. Chance of rain 30 percent.

SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. Lows in the lower 60s. Chance of rain 40 percent.

SUNDAY
Partly 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 AM EDT 9/13/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
13 SEP 2026

1 PM

81°

81°

Partly Cloudy

4%

0% Thunder
( 6% severe)

NNW 12

47%

59°

High 82°

4 PM

78°

79°

Mostly Cloudy

NA 14

42%

53°

Mostly Cloudy

7 PM

73°

73°

Mostly Cloudy

5%

0% Thunder
( 6% severe)

NNE 10

46%

51°

10 PM

65°

65°

Mostly Cloudy

NE 9

63%

52°

Monday
14 SEP 2026

1 AM

61°

60°

Mostly Cloudy

14%
RAIN
<.01 in

0% Thunder
( 6% severe)

NE 9

70%

51°

Low 57°

4 AM

59°

57°

Partly Cloudy

ENE 10

75%

51°

High 82°

7 AM

57°

54°

Partly Cloudy

3%

0% Thunder
( 6% severe)

E 12

77%

50°

Partly Cloudy

10 AM

68°

68°

Partly Cloudy

ESE 14

51%

49°

1 PM

75°

75°

Partly Cloudy

5%

0% Thunder
( 5% severe)

ESE 14

38%

48°

4 PM

80°

80°

Partly Cloudy

SE 15

36%

51°

7 PM

77°

78°

Partly Cloudy

0%

0% Thunder
( 8% severe)

SE 14

45%

54°

10 PM

71°

71°

Clear

SE 14

61%

57°

Tuesday
15 SEP 2026

1 AM

70°

70°

Partly Cloudy

1%

0% Thunder
( 11% severe)

SSE 14

68%

59°

Low 69°

4 AM

70°

70°

Clear

S 14

76%

62°

High 94°

7 AM

71°

71°

Clear

5%

0% Thunder
( 11% severe)

S 14

79%

64°

Partly Cloudy

Chance of Rain

10 AM

84°

87°

Partly Cloudy

SSW 14

59%

68°

1 PM

93°

97°

Partly Cloudy

47%
RAIN
.1–.25 in

0% Thunder
( 24% severe)

SW 14

44%

68°

4 PM

92°

96°

Partly Cloudy

WSW 13

46%

68°

7 PM

83°

87°

Partly Cloudy

S 8

65%

70°


DECATUR, IL extended weather forecast
Wednesday 16 SEP 2026	Thursday 17 SEP 2026	Friday 18 SEP 2026	Saturday 19 SEP 2026	Sunday 20 SEP 2026
Low 67°	Low 66°	Low 61°	Low 61°	Low 59°
High 81°	High 79°	High 83°	High 86°	High 78°

Overcast 73% Rain	Overcast 63% Rain	Partly Cloudy 24% Rain	Partly Cloudy 32% Rain	Overcast 41% Rain

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