DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
5:54 AM CDT JUL 18, 2026
Clear 75°F
Feels Like:	75°F
Dewpoint:	72°F
Rel. Hum.:	90%
Visibility:	10 miles
Wind:	WSW at 5 mph
Pressure:	29.99 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

TODAY
Sunny. Highs around 90. West winds 10 to 15 mph. Heat index values up to 101.

TONIGHT
Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Humid with lows around 70. Northwest winds 5 to 10 mph, becoming northeast after midnight. Chance of rain 50 percent.

SUNDAY
Sunny. Patchy smoke. Highs in the mid 80s. Northeast winds 5 to 10 mph.

SUNDAY NIGHT
Mostly clear. Patchy smoke. Lows in the mid 60s. East winds 5 to 10 mph.

MONDAY
Sunny with highs in the upper 80s. South winds 5 to 10 mph.

MONDAY NIGHT
Partly cloudy. A chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 50 percent.

TUESDAY AND TUESDAY NIGHT
Mostly clear. Highs in the upper 80s. Lows in the mid 60s.

WEDNESDAY AND WEDNESDAY NIGHT
Mostly clear. Highs in the upper 70s. Lows in the upper 50s.

THURSDAY AND THURSDAY NIGHT
Partly cloudy. Highs in the upper 70s. Lows in the lower 60s.

FRIDAY
Mostly sunny. A chance of showers in the morning. Highs in the lower 80s. Chance of rain 30 percent.

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 7/17/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
18 JUL 2026

1 AM

75°

75°

Clear

6%

0% Thunder
( 7% severe)

WSW 7

90%

72°

Low 73°

4 AM

74°

74°

Partly Cloudy

WSW 9

93%

72°

High 89°

7 AM

75°

75°

Clear

3%

0% Thunder
( 17% severe)

W 10

90%

72°

Clear

10 AM

83°

90°

Clear

W 13

74%

74°

1 PM

88°

98°

Clear

16%
RAIN
<.01 in

0% Thunder
( 42% severe)

W 14

66%

75°

4 PM

88°

97°

Clear

W 14

63%

74°

7 PM

85°

93°

Mostly Cloudy

41%
RAIN
***

0% Thunder
( 35% severe)

WNW 9

72%

75°

10 PM

77°

78°

Partly Cloudy

NW 5

90%

74°

Sunday
19 JUL 2026

1 AM

73°

73°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 12% severe)

NE 5

97%

72°

Low 69°

4 AM

71°

71°

Partly Cloudy

ENE 7

93%

69°

High 85°

7 AM

70°

70°

Partly Cloudy

2%

0% Thunder
( 6% severe)

ENE 8

90%

67°

Partly Cloudy

10 AM

77°

79°

Partly Cloudy

ENE 8

71%

67°

1 PM

83°

86°

Partly Cloudy

1%

0% Thunder
( 5% severe)

ENE 7

59%

67°

4 PM

84°

86°

Partly Cloudy

ENE 8

55%

66°

7 PM

82°

85°

Clear

2%

0% Thunder
( 7% severe)

ENE 7

61%

67°

10 PM

72°

72°

Clear

E 5

84%

67°


DECATUR, IL extended weather forecast
Monday 20 JUL 2026	Tuesday 21 JUL 2026	Wednesday 22 JUL 2026	Thursday 23 JUL 2026	Friday 24 JUL 2026
Low 65°	Low 73°	Low 64°	Low 59°	Low 59°
High 87°	High 92°	High 82°	High 81°	High 78°

Partly Cloudy 14% Rain	Partly Cloudy 54% Rain	Partly Cloudy 14% Rain	Clear 12% Rain	Mostly Cloudy 41% Rain

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