Grabtree Park, IL Weather Forecast & Current Conditions

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Grabtree Park Weather Map
UTC Time: 9/19/2026, 10:55
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Grabtree Park, IL Regional Weather

Expires:202609191100;;704508
ASUS43 KLOT 191010
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 AM CDT SAT SEP 19 2026

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.

* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
  REPORT WEATHER SUCH AS PRECIPITATION OR FOG.


ILZ005-006-012>014-019>023-191100-
NORTHEAST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  CLOUDY    68  60  75 NW14G22   30.02R THUNDER TC  20   
CHICAGO-MIDWAY CLOUDY    66  61  84 SE8       29.95F TC  19           
AURORA         RAIN      65  63  93 N16G28    30.00R FOG     TC  18   
JOLIET*        CLOUDY    69  66  92 S10       29.94F TC  20           
WAUKEGAN       HVY RAIN  62  61  96 NE16G25   30.03S FOG     TC  17   
DUPAGE AIRPORT LGT RAIN  64  62  93 N16       30.02R TC  18           
KANKAKEE*      CLOUDY    66  65  94 SE6       29.98R TC  19           
WHEELING       RAIN      64  62  93 NE7       30.05R FOG     TC  18   
ROMEOVILLE*    CLOUDY    68  66  94 SE16G23   29.94F TC  20           
LANSING*       CLOUDY    65  58  78 SE9       29.97F TC  18           
NORTHERLY ISL*   N/A     65  59  81 E9          N/A  TC  18           
$$


SKY/WX - Weather  TMP - Temperature  DP - Dew Point  RH - Humidity
WIND - Wind Direction/Speed PRES - Barometric Pressure VSB - Visibility
WCI - Wind Chill Index E13G22 Wind - East Wind 13 mph/Gusts of 22 mph

Grabtree Park, IL

This Morning
Thunderstorms
65°18°
100%
Today
Thunderstorms
78°26°
100%
Sunday
Thunderstorms
68°/ 58° 20°/ 14°
60%
Monday
Rain Showers
65°/ 52° 18°/ 11°
30%
Tuesday
Rain Showers
62°/ 52° 17°/ 11°
20%
Wednesday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Thursday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Friday
Mostly Cloudy
70°21°
0%

Day: A chance of showers and thunderstorms late, then showers with thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Locally heavy rainfall possible late. Temperatures in the mid 60s. East winds around 10 mph. Chance of precipitation near 100 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the mid 60s. Southeast winds around 5 mph, becoming north after midnight. Chance of precipitation near 100 percent.

Joliet, IL

This Morning
Thunderstorms
65°18°
100%
Today
Thunderstorms
78°26°
100%
Sunday
Thunderstorms
72°/ 58° 22°/ 14°
70%
Monday
Rain Showers
65°/ 52° 18°/ 11°
50%
Tuesday
Rain Showers
62°/ 52° 17°/ 11°
20%
Wednesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
72°22°
0%

Day: A chance of showers and thunderstorms late, then showers with thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Temperatures in the mid 60s. Southeast winds around 10 mph. Chance of precipitation near 100 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the mid 60s. Southeast winds around 5 mph, becoming north after midnight. Chance of precipitation near 100 percent.

Calumet City, IL

This Morning
Thunderstorms
65°18°
100%
Today
Thunderstorms
78°26°
100%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
70%
Monday
Rain Showers
65°/ 52° 18°/ 11°
40%
Tuesday
Rain Showers
62°/ 52° 17°/ 11°
20%
Wednesday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Thursday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Mostly Cloudy
72°22°
0%

Day: Cloudy. A slight chance of showers and thunderstorms late, then showers with thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Temperatures in the mid 60s. Southeast winds around 10 mph. Chance of precipitation 90 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the mid 60s. South winds around 5 mph, becoming northwest after midnight. Chance of precipitation near 100 percent.

Chicago, IL

This Morning
Thunderstorms
65°18°
100%
Today
Thunderstorms
75°24°
100%
Sunday
Thunderstorms
70°/ 58° 21°/ 14°
60%
Monday
Rain Showers
65°/ 55° 18°/ 13°
30%
Tuesday
Rain Showers
62°/ 55° 17°/ 13°
20%
Wednesday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Thursday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Friday
Mostly Cloudy
68°20°
0%

Day: A chance of showers and thunderstorms late, then showers with thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Locally heavy rainfall possible late. Temperatures in the mid 60s. Southeast winds 10 to 15 mph. Chance of precipitation near 100 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the mid 60s. Southeast winds around 5 mph, becoming north after midnight. Chance of precipitation near 100 percent.

Aurora, IL

This Morning
Thunderstorms
62°17°
100%
Today
Thunderstorms
78°26°
100%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
60%
Monday
Rain Showers
65°/ 52° 18°/ 11°
40%
Tuesday
Rain Showers
62°/ 50° 17°/ 10°
20%
Wednesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Mostly Cloudy
72°22°
0%

Day: A chance of showers and thunderstorms late, then showers with thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Temperatures in the mid 60s. East winds around 10 mph. Chance of precipitation near 100 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the lower 60s. Southeast winds around 5 mph, becoming north after midnight. Chance of precipitation near 100 percent.

Oswego, IL

This Morning
Thunderstorms
65°18°
100%
Today
Thunderstorms
80°27°
100%
Sunday
Thunderstorms
72°/ 58° 22°/ 14°
70%
Monday
Rain Showers
65°/ 52° 18°/ 11°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Cloudy
72°22°
0%

Day: A chance of showers and thunderstorms late, then showers with thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Temperatures in the mid 60s. Southeast winds around 10 mph. Chance of precipitation near 100 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the mid 60s. Southeast winds around 5 mph, becoming north after midnight. Chance of precipitation near 100 percent.

Evanston, IL

This Morning
Thunderstorms
62°17°
100%
Today
Thunderstorms
75°24°
100%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
60%
Monday
Rain Showers
65°/ 52° 18°/ 11°
30%
Tuesday
Mostly Cloudy
62°/ 52° 17°/ 11°
0%
Wednesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Thursday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Friday
Mostly Cloudy
70°21°
0%

Day: Thunderstorms likely late. Showers. Thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Temperatures in the mid 60s. East winds around 10 mph. Chance of precipitation near 100 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the lower 60s. East winds around 5 mph, becoming north after midnight. Chance of precipitation near 100 percent.

Crete, IL

This Morning
Thunderstorms
65°18°
90%
Today
Thunderstorms
78°26°
100%
Sunday
Thunderstorms
72°/ 55° 22°/ 13°
70%
Monday
Rain Showers
65°/ 52° 18°/ 11°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Cloudy
72°22°
0%

Day: Mostly cloudy. A slight chance of showers and thunderstorms late, then thunderstorms likely and a chance of showers late. Temperatures in the mid 60s. Southeast winds around 10 mph. Chance of precipitation 70 percent.

Night: Showers with thunderstorms likely. Humid with lows in the mid 60s. South winds around 5 mph, becoming northwest after midnight. Chance of precipitation 90 percent.

Channahon, IL

This Morning
Thunderstorms
65°18°
90%
Today
Thunderstorms
82°28°
100%
Sunday
Thunderstorms
72°/ 58° 22°/ 14°
70%
Monday
Rain Showers
65°/ 52° 18°/ 11°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Cloudy
72°22°
0%

Day: Cloudy. A slight chance of showers and thunderstorms late, then thunderstorms likely and a chance of showers late. Temperatures in the mid 60s. Southeast winds 5 to 10 mph. Chance of precipitation 70 percent.

Night: Showers with thunderstorms likely. Humid with lows in the mid 60s. South winds around 5 mph, becoming northwest after midnight. Chance of precipitation 90 percent.

Morris, IL

This Morning
Thunderstorms
68°20°
90%
Today
Thunderstorms
82°28°
90%
Sunday
Thunderstorms
72°/ 58° 22°/ 14°
70%
Monday
Rain Showers
68°/ 52° 20°/ 11°
60%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Thursday
Mostly Cloudy
70°/ 55° 21°/ 13°
0%
Friday
Cloudy
75°24°
0%

Day: Cloudy. A slight chance of showers and thunderstorms late, then thunderstorms likely and a chance of showers late. Temperatures in the upper 60s. Southeast winds 5 to 10 mph. Chance of precipitation 70 percent.

Night: Showers with thunderstorms likely. Humid with lows in the upper 60s. South winds around 5 mph, becoming northwest after midnight. Chance of precipitation 90 percent.

Gary, IN

This Morning
Thunderstorms
65°18°
100%
Today
Thunderstorms
78°26°
100%
Sunday
Thunderstorms
72°/ 55° 22°/ 13°
70%
Monday
Rain Showers
65°/ 52° 18°/ 11°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Cloudy
70°21°
0%

Day: Mostly cloudy. A slight chance of showers and thunderstorms late, then a chance of showers and thunderstorms late. Some thunderstorms may produce heavy rainfall late. Temperatures in the mid 60s. Southeast winds around 10 mph. Chance of precipitation 50 percent.

Night: Showers with thunderstorms likely. Humid with lows in the mid 60s. Southeast winds around 5 mph, becoming northwest after midnight. Chance of precipitation near 100 percent.

Waukegan, IL

This Morning
Thunderstorms
62°17°
100%
Today
Thunderstorms
75°24°
100%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
50%
Monday
Rain Showers
65°/ 52° 18°/ 11°
20%
Tuesday
Mostly Cloudy
62°/ 52° 17°/ 11°
0%
Wednesday
Mostly Cloudy
62°/ 52° 17°/ 11°
0%
Thursday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Friday
Mostly Cloudy
68°20°
0%

Day: Thunderstorms likely late. Showers. Thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Locally heavy rainfall possible. Temperatures in the mid 60s. East winds 10 to 15 mph. Chance of precipitation near 100 percent.

Night: Showers with thunderstorms likely until early morning, then a chance of showers and thunderstorms late. Lows in the lower 60s. East winds around 5 mph, increasing to northeast 10 to 15 mph after midnight. Chance of precipitation near 100 percent.

DeKalb, IL

This Morning
Thunderstorms
62°17°
100%
Today
Thunderstorms
78°26°
100%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
70%
Monday
Rain Showers
65°/ 50° 18°/ 10°
50%
Tuesday
Rain Showers
62°/ 48° 17°/
20%
Wednesday
Cloudy
65°/ 52° 18°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Mostly Cloudy
72°22°
0%

Day: Thunderstorms likely late. Showers. Thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Temperatures in the mid 60s. Southeast winds around 10 mph. Chance of precipitation near 100 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the lower 60s. Southeast winds around 5 mph, becoming north after midnight. Chance of precipitation near 100 percent.

Crystal Lake, IL

This Morning
Thunderstorms
62°17°
100%
Today
Thunderstorms
75°24°
100%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
50%
Monday
Rain Showers
62°/ 50° 17°/ 10°
30%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Thursday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Friday
Mostly Cloudy
70°21°
0%

Day: Thunderstorms likely late. Showers. Thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Locally heavy rainfall possible. Temperatures in the mid 60s. East winds around 10 mph. Chance of precipitation near 100 percent.

Night: Showers with thunderstorms likely until early morning, then a chance of showers and thunderstorms late. Lows in the lower 60s. East winds around 5 mph, becoming northeast after midnight. Chance of precipitation near 100 percent.

Kankakee, IL

This Morning
Thunderstorms
65°18°
90%
Today
Thunderstorms
82°28°
100%
Sunday
Thunderstorms
72°/ 55° 22°/ 13°
70%
Monday
Rain Showers
65°/ 52° 18°/ 11°
60%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Cloudy
72°22°
0%

Day: Mostly cloudy. A slight chance of showers and thunderstorms late, then a chance of showers and thunderstorms late. Temperatures in the mid 60s. Southeast winds 5 to 10 mph. Chance of precipitation 50 percent.

Night: Showers with thunderstorms likely. Humid with lows in the mid 60s. South winds around 5 mph, becoming west after midnight. Chance of precipitation 90 percent.

Ottawa, IL

This Morning
Thunderstorms
65°18°
100%
Today
Thunderstorms
82°28°
100%
Sunday
Thunderstorms
72°/ 58° 22°/ 14°
70%
Monday
Rain Showers
65°/ 52° 18°/ 11°
60%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Friday
Cloudy
72°22°
0%

Day: Cloudy. A chance of thunderstorms late. A chance of showers. Thunderstorms likely late. Temperatures in the upper 60s. Southeast winds 5 to 10 mph. Chance of precipitation 70 percent.

Night: Showers with thunderstorms likely. Humid with lows in the mid 60s. South winds around 5 mph, becoming northwest after midnight. Chance of precipitation near 100 percent.

Portage, IN

This Morning
Thunderstorms
65°18°
90%
Today
Thunderstorms
78°26°
100%
Sunday
Thunderstorms
72°/ 52° 22°/ 11°
60%
Monday
Rain Showers
65°/ 50° 18°/ 10°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Cloudy
70°21°
0%

Day: Mostly cloudy. A slight chance of showers and thunderstorms late, then a chance of showers and thunderstorms late. Some thunderstorms may produce heavy rainfall late. Temperatures in the lower 60s. Southeast winds around 10 mph. Chance of precipitation 50 percent.

Night: Showers with thunderstorms likely. Humid with lows in the mid 60s. Southeast winds around 5 mph, becoming west after midnight. Chance of precipitation 90 percent.

Belvidere, IL

This Morning
Thunderstorms
62°17°
100%
Today
Thunderstorms
75°24°
100%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
50%
Monday
Rain Showers
62°/ 48° 17°/
40%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Mostly Cloudy
65°/ 48° 18°/
0%
Thursday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Friday
Mostly Cloudy
70°21°
0%

Day: Showers with thunderstorms likely. Locally heavy rainfall possible. Temperatures in the mid 60s. East winds around 10 mph. Chance of precipitation near 100 percent.

Night: Showers with thunderstorms likely until early morning, then a chance of showers and thunderstorms late. Lows in the lower 60s. East winds around 5 mph, becoming northeast after midnight. Chance of precipitation 90 percent.

Dixon, IL

This Morning
Thunderstorms
62°17°
100%
Today
Thunderstorms
80°27°
100%
Sunday
Thunderstorms
70°/ 55° 21°/ 13°
70%
Monday
Rain Showers
65°/ 52° 18°/ 11°
50%
Tuesday
Rain Showers
62°/ 48° 17°/
20%
Wednesday
Cloudy
65°/ 52° 18°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Cloudy
72°22°
0%

Day: A chance of showers and thunderstorms late, then showers with thunderstorms likely late. Some thunderstorms may produce heavy rainfall late. Temperatures in the mid 60s. Southeast winds 5 to 10 mph. Chance of precipitation near 100 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the lower 60s. South winds around 5 mph, becoming north after midnight. Chance of precipitation near 100 percent.

Rochelle, IL

This Morning
Thunderstorms
62°17°
100%
Today
Thunderstorms
78°26°
100%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
60%
Monday
Rain Showers
65°/ 48° 18°/
50%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Cloudy
65°/ 48° 18°/
0%
Thursday
Mostly Cloudy
68°/ 50° 20°/ 10°
0%
Friday
Cloudy
72°22°
0%

Day: Showers likely late. Thunderstorms likely. Showers late. Some thunderstorms may produce heavy rainfall. Locally heavy rainfall possible late. Temperatures in the mid 60s. Southeast winds 5 to 10 mph. Chance of precipitation near 100 percent.

Night: Thunderstorms likely until early morning. Showers. A chance of thunderstorms late. Humid with lows in the lower 60s. Southeast winds around 5 mph, increasing to north 10 to 15 mph after midnight. Chance of precipitation near 100 percent.

Names listed above may include county names.

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