DECATUR, IL 62521 Weather Forecast & Current Conditions

Local Weather
- Local weather by ZIP or City
- Local area snow depth
- CURRENT WEATHER MAPS
- - Fronts & Pressure Centers
- - Current U.S. Temperatures
- - Northwest U.S.
- - Northeast U.S.
- - Mid-Atlantic U.S.
- - Midwest U.S.
- - Central Plains U.S.
- - Southeast U.S.
- - Southern Plains U.S.
- - Southwest U.S.
- - Alaska
10 Day Forecasts
Other Forecasts
- Snowstorm Forecast
- U.S. 6-hourly Snowfall Forecast
- 3 DAY NAM MODEL FORECASTS
- - Clouds & Precipitation
- - Temperature
- 7 DAY NWS FORECASTS
- - Weather Type
- - Precip. Probability
- - High Temperatures
- - Low Temperatures
- - Cloud Cover
- - Wind
- - Relative Humidity
- - Dewpoint
- - Snowfall
- SEASONAL FORECASTS
- - Temperature
- - Precipitation
Severe Weather
Radar
- U.S. RADAR (NWS interactive)
- U.S. RADAR (by state)
Satellite

62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
6:54 PM CDT MAR 29, 2026
Clear 64°F
Feels Like:	63°F
Dewpoint:	37°F
Rel. Hum.:	37%
Visibility:	10 miles
Wind:	SSW at 13 mph
Pressure:	30.06 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 2025 Hurricanes	DECATUR, IL 62521 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Mostly cloudy. Not as cool with lows in the mid 50s. South winds around 15 mph with gusts up to 25 mph.

MONDAY
Mostly sunny. Not as cool with highs in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph.

MONDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s. South winds 15 to 20 mph with gusts up to 30 mph.

TUESDAY
Partly sunny. A chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Windy with highs in the lower 80s. Southwest winds 20 to 30 mph with gusts up to 40 mph. Chance of rain 50 percent.

TUESDAY NIGHT
Thunderstorms likely in the evening. Showers, cooler with lows in the upper 40s. Southwest winds 15 to 20 mph, becoming north after midnight. Chance of rain 90 percent.

WEDNESDAY
Showers likely in the morning, then showers likely with a chance of thunderstorms in the afternoon. Much cooler with highs in the upper 50s. Chance of rain 70 percent.

WEDNESDAY NIGHT
A chance of thunderstorms in the evening. Showers. Lows in the mid 40s. Chance of rain 90 percent.

THURSDAY
Showers. Highs in the mid 60s. Chance of rain 90 percent.

THURSDAY NIGHT
Showers likely, mainly in the evening. Lows in the mid 40s. Chance of rain 70 percent.

FRIDAY AND FRIDAY NIGHT
Mostly cloudy with a 50 percent chance of showers. Highs in the upper 60s. Lows in the lower 50s.

SATURDAY AND SATURDAY NIGHT
Showers likely. Highs in the upper 60s. Lows in the mid 40s. Chance of rain 70 percent.

SUNDAY
Partly sunny. A chance of showers in the morning. Breezy, cooler with highs in the upper 50s. Chance of rain 50 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 7:00 AM EST 3/29/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
29 MAR 2026

12 PM

61°

59°

Partly Cloudy

4%

0% Thunder
( 3% severe)

SSW 16

36%

34°

High 66°

3 PM

65°

65°

Mostly Cloudy

S 16

33%

35°

Mostly Cloudy

6 PM

60°

58°

Mostly Cloudy

6%

0% Thunder
( 2% severe)

S 13

44%

38°

9 PM

57°

54°

Mostly Cloudy

S 14

53%

40°

Monday
30 MAR 2026

12 AM

56°

53°

Partly Cloudy

4%

0% Thunder
( 6% severe)

SSW 14

59%

42°

Low 54°

3 AM

56°

53°

Mostly Cloudy

SSW 14

66%

45°

High 79°

6 AM

56°

53°

Mostly Cloudy

3%

0% Thunder
( 8% severe)

S 14

74%

48°

Partly Cloudy

Breezy

9 AM

65°

65°

Partly Cloudy

SSW 17

63%

52°

12 PM

75°

75°

Partly Cloudy

3%

0% Thunder
( 9% severe)

SSW 18

50%

55°

3 PM

78°

79°

Partly Cloudy

SSW 18

47%

56°

6 PM

73°

73°

Partly Cloudy

2%

0% Thunder
( 8% severe)

S 16

57%

57°

9 PM

68°

68°

Mostly Cloudy

S 18

65%

56°

Tuesday
31 MAR 2026

12 AM

66°

66°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 8% severe)

SSW 18

68%

55°

Low 62°

3 AM

64°

62°

Mostly Cloudy

SSW 18

73%

55°

High 81°

6 AM

63°

61°

Mostly Cloudy

25%
RAIN
<.01 in

0% Thunder
( 16% severe)

SSW 18

78%

56°

Mostly Cloudy

Chance of Rain

Windy

9 AM

70°

70°

Mostly Cloudy

SSW 22

63%

57°

12 PM

78°

79°

Mostly Cloudy

49%
RAIN
1–2 in

0% Thunder
( 30% severe)

SW 24

48%

57°

3 PM

79°

80°

Mostly Cloudy

SW 22

44%

55°

6 PM

72°

72°

Mostly Cloudy

SW 17

53%

54°


DECATUR, IL extended weather forecast
Wednesday 1 APR 2026	Thursday 2 APR 2026	Friday 3 APR 2026	Saturday 4 APR 2026	Sunday 5 APR 2026
Low 56°	Low 44°	Low 38°	Low 47°	Low 45°
High 62°	High 52°	High 58°	High 64°	High 55°

Overcast 85% Rain	Overcast 86% Rain	Overcast 17% Rain	Overcast 55% Rain	Overcast 59% Rain

WEATHER SELECT BOX EXAMPLES:

for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:

Decatur, IL
Decatur, IL snow
Decatur, IL radar
IL map

-or-
-or-
-or-

62521
62521 snow
62521 radar

-or-
-or-

IL
IL snow

Copyright © 2024 WeatherStreet.com

Put our free WeatherStreet weather lookup on your web page.

Terms & Conditions
This is not clickable - please e-mail us separately

This is not clickable - please e-mail us separately