DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
12:54 AM CDT JUL 3, 2026
Clear 81°F
Feels Like:	86°F
Dewpoint:	73°F
Rel. Hum.:	77%
Visibility:	10 miles
Wind:	SW at 7 mph
Pressure:	30.07 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. Lows in the mid 70s. South winds around 5 mph.

FRIDAY
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 104.

FRIDAY NIGHT
Partly cloudy with a slight chance of showers and thunderstorms. Humid with lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 20 percent.

INDEPENDENCE DAY
Mostly sunny. Humid with highs in the upper 80s. Southwest winds 5 to 10 mph. Heat index values up to 101.

SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Humid with lows around 70. South winds 5 to 10 mph. Chance of rain 50 percent.

SUNDAY
Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent.

SUNDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the upper 60s. Chance of rain 40 percent.

MONDAY
Mostly sunny. Highs in the mid 80s.

MONDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s.

TUESDAY AND TUESDAY NIGHT
Partly cloudy. Highs in the mid 80s. Lows in the upper 60s.

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

WEDNESDAY NIGHT
Mostly clear. Lows in the upper 60s.

THURSDAY
Mostly sunny. A chance of showers in the afternoon. Highs in the mid 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/ 2/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Friday
3 JUL 2026

1 AM

78°

80°

Partly Cloudy

3%

0% Thunder
( 12% severe)

SSW 7

82%

72°

Low 75°

4 AM

76°

76°

Clear

SSW 7

87%

72°

High 91°

7 AM

78°

80°

Clear

7%

0% Thunder
( 25% severe)

S 7

88%

74°

Partly Cloudy

10 AM

87°

97°

Partly Cloudy

SW 9

68%

75°

1 PM

90°

101°

Partly Cloudy

19%
RAIN
<.01 in

0% Thunder
( 44% severe)

SW 12

62%

75°

4 PM

90°

100°

Partly Cloudy

SSW 12

60%

74°

7 PM

88°

97°

Partly Cloudy

21%
RAIN
<.01 in

0% Thunder
( 33% severe)

W 7

63%

74°

10 PM

79°

82°

Partly Cloudy

SSE 6

82%

73°

Saturday
4 JUL 2026

1 AM

76°

77°

Partly Cloudy

14%
RAIN
.1–.25 in

0% Thunder
( 23% severe)

SSE 6

85%

71°

Low 73°

4 AM

75°

75°

Partly Cloudy

SSW 6

87%

71°

High 89°

7 AM

76°

76°

Partly Cloudy

11%
RAIN
<.01 in

0% Thunder
( 26% severe)

SSW 6

90%

73°

Partly Cloudy

Rain Likely

10 AM

84°

91°

Partly Cloudy

S 8

72%

74°

1 PM

88°

97°

Partly Cloudy

54%
RAIN
>2 in

0% Thunder
( 39% severe)

SW 9

63%

74°

4 PM

88°

97°

Partly Cloudy

WSW 9

63%

74°

7 PM

85°

92°

Partly Cloudy

22%
RAIN
.01–.1 in

0% Thunder
( 25% severe)

SW 8

67%

73°

10 PM

77°

78°

Partly Cloudy

SSW 5

85%

72°


DECATUR, IL extended weather forecast
BAD DAY BAD DATE	BAD DAY BAD DATE	BAD DAY BAD DATE	BAD DAY BAD DATE	BAD DAY BAD DATE
Low 69°	Low 72°	Low 66°	Low 64°	Low 66°
High 94°	High 85°	High 86°	High 85°	High 87°

Partly Cloudy 51% Rain	Overcast 68% Rain	Partly Cloudy 22% Rain	Partly Cloudy 19% Rain	Partly Cloudy 30% Rain

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