Oswego, IL Weather Forecast & Current Conditions

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Oswego Weather Map
UTC Time: 9/14/2026, 05:43
Your Time:

Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Oswego, IL Regional Weather

Expires:202609140600;;418614
ASUS43 KLOT 140510
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1200 AM CDT MON SEP 14 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>023-140600-
NORTHEAST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  CLEAR     56  52  86 CALM      30.19R TC  13           
CHICAGO-MIDWAY CLEAR     57  53  86 NW5       30.20R TC  14           
AURORA         FOG       49  49 100 CALM      30.21R VSB 3/4 TC   9   
JOLIET*        CLEAR     53  53 100 CALM      30.21R TC  12           
WAUKEGAN       CLEAR     50  50 100 CALM      30.19R TC  10           
DUPAGE AIRPORT CLEAR     53  52  96 CALM      30.21R TC  12           
KANKAKEE*      CLEAR     55  53  95 CALM      30.21R TC  13           
WHEELING       CLEAR     54  52  93 CALM      30.21R TC  12           
ROMEOVILLE*    CLEAR     57  55  94 NW5       30.21R TC  14           
LANSING*       CLEAR     54  50  85 CALM      30.20R TC  12           
NORTHERLY ISL*   N/A     61  50  67 W7          N/A  TC  16           
$$


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

Oswego, IL-INZ020

Tonight
Clear
52°11°
0%
Monday
Sunny
75°/ 62° 24°/ 17°
0%
Tuesday
Thunderstorms
92°/ 68° 33°/ 20°
80%
Wednesday
Thunderstorms
85°/ 68° 29°/ 20°
70%
Thursday
Thunderstorms
85°/ 65° 29°/ 18°
50%
Friday
Rain Showers
82°/ 65° 28°/ 18°
20%
Saturday
Rain Showers
82°/ 62° 28°/ 17°
50%

Night: Mostly clear. Lows in the lower 50s. Northeast winds around 5 mph.

Aurora, IL-ILZ012

Overnight
Clear
48°
0%
Monday
Rain Showers
75°/ 65° 24°/ 18°
70%
Tuesday
Thunderstorms
85°/ 62° 29°/ 17°
70%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
70%
Thursday
Thunderstorms
78°/ 62° 26°/ 17°
50%
Friday
Rain Showers
75°/ 62° 24°/ 17°
50%
Saturday
Rain Showers
78°/ 60° 26°/ 16°
60%

Night: Clear. Patchy fog. Lows in the upper 40s. Northwest winds around 5 mph late in the evening, becoming light and variable.

Joliet, IL-ILZ106

Overnight
Clear
52°11°
0%
Monday
Rain Showers
75°/ 68° 24°/ 20°
50%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
70%
Wednesday
Thunderstorms
78°/ 68° 26°/ 20°
70%
Thursday
Rain Showers
80°/ 65° 27°/ 18°
60%
Friday
Rain Showers
78°/ 62° 26°/ 17°
50%
Saturday
Rain Showers
80°/ 62° 27°/ 17°
50%

Night: Clear. Patchy fog. Lows in the lower 50s. North winds around 5 mph.

Naperville, IL-ILZ013

Overnight
Clear
52°11°
0%
Monday
Rain Showers
75°/ 68° 24°/ 20°
50%
Tuesday
Thunderstorms
85°/ 65° 29°/ 18°
70%
Wednesday
Thunderstorms
75°/ 68° 24°/ 20°
70%
Thursday
Thunderstorms
78°/ 65° 26°/ 18°
60%
Friday
Rain Showers
75°/ 62° 24°/ 17°
50%
Saturday
Rain Showers
78°/ 62° 26°/ 17°
50%

Night: Clear. Patchy fog. Lows in the lower 50s. North winds around 5 mph.

DeKalb, IL-ILZ011

Overnight
Clear
45°
0%
Monday
Rain Showers
75°/ 65° 24°/ 18°
70%
Tuesday
Thunderstorms
82°/ 60° 28°/ 16°
70%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
70%
Thursday
Thunderstorms
78°/ 62° 26°/ 17°
50%
Friday
Rain Showers
78°/ 62° 26°/ 17°
50%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
50%

Night: Mostly clear. Patchy fog. Lows in the mid 40s. North winds around 5 mph late in the evening, becoming light and variable.

Morris, IL-ILZ021

Overnight
Clear
50°10°
0%
Monday
Rain Showers
78°/ 68° 26°/ 20°
50%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
70%
Wednesday
Thunderstorms
80°/ 68° 27°/ 20°
70%
Thursday
Thunderstorms
82°/ 65° 28°/ 18°
50%
Friday
Rain Showers
82°/ 65° 28°/ 18°
50%
Saturday
Rain Showers
82°/ 62° 28°/ 17°
50%

Night: Mostly clear. Patchy fog. Lows around 50. North winds around 5 mph late in the evening, becoming light and variable.

Calumet City, IL-ILZ105

Overnight
Clear
52°11°
0%
Monday
Mostly Cloudy
75°/ 68° 24°/ 20°
40%
Tuesday
Thunderstorms
88°/ 68° 31°/ 20°
70%
Wednesday
Thunderstorms
78°/ 68° 26°/ 20°
70%
Thursday
Rain Showers
78°/ 65° 26°/ 18°
50%
Friday
Rain Showers
78°/ 65° 26°/ 18°
50%
Saturday
Rain Showers
78°/ 62° 26°/ 17°
50%

Night: Mostly clear. Lows in the lower 50s. North winds around 5 mph.

Channahon, IL-ILZ107

Overnight
Clear
50°10°
0%
Monday
Mostly Cloudy
78°/ 68° 26°/ 20°
40%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
70%
Wednesday
Thunderstorms
80°/ 68° 27°/ 20°
70%
Thursday
Thunderstorms
82°/ 65° 28°/ 18°
50%
Friday
Rain Showers
80°/ 65° 27°/ 18°
40%
Saturday
Rain Showers
82°/ 62° 28°/ 17°
50%

Night: Mostly clear. Patchy fog after midnight. Lows around 50. North winds around 5 mph late in the evening, becoming light and variable.

Ottawa, IL-ILZ019

Overnight
Clear
50°10°
0%
Monday
Rain Showers
78°/ 68° 26°/ 20°
50%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
90%
Wednesday
Thunderstorms
78°/ 68° 26°/ 20°
80%
Thursday
Rain Showers
82°/ 65° 28°/ 18°
50%
Friday
Rain Showers
80°/ 65° 27°/ 18°
50%
Saturday
Rain Showers
82°/ 62° 28°/ 17°
50%

Night: Mostly clear. Patchy fog. Lows around 50. North winds around 5 mph.

Chicago, IL-ILZ104

Overnight
Clear
55°13°
0%
Monday
Mostly Cloudy
75°/ 68° 24°/ 20°
50%
Tuesday
Thunderstorms
85°/ 68° 29°/ 20°
70%
Wednesday
Thunderstorms
75°/ 68° 24°/ 20°
70%
Thursday
Rain Showers
78°/ 65° 26°/ 18°
60%
Friday
Rain Showers
75°/ 65° 24°/ 18°
50%
Saturday
Rain Showers
78°/ 65° 26°/ 18°
50%

Night: Mostly clear. Lows in the mid 50s. North winds around 5 mph.

Evanston, IL-ILZ103

Overnight
Clear
52°11°
0%
Monday
Rain Showers
75°/ 65° 24°/ 18°
60%
Tuesday
Thunderstorms
85°/ 62° 29°/ 17°
70%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
70%
Thursday
Thunderstorms
78°/ 62° 26°/ 17°
50%
Friday
Rain Showers
75°/ 62° 24°/ 17°
50%
Saturday
Rain Showers
78°/ 62° 26°/ 17°
60%

Night: Clear. Patchy fog after midnight. Lows in the lower 50s. Northwest winds around 5 mph.

Crete, IL-ILZ108

Overnight
Clear
52°11°
0%
Monday
Mostly Cloudy
75°/ 65° 24°/ 18°
20%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
70%
Wednesday
Thunderstorms
78°/ 68° 26°/ 20°
70%
Thursday
Thunderstorms
80°/ 65° 27°/ 18°
50%
Friday
Rain Showers
78°/ 62° 26°/ 17°
40%
Saturday
Rain Showers
80°/ 62° 27°/ 17°
50%

Night: Mostly clear. Lows in the lower 50s. North winds around 5 mph late in the evening, becoming light and variable.

Crystal Lake, IL-ILZ005

Overnight
Clear
45°
0%
Monday
Rain Showers
75°/ 65° 24°/ 18°
70%
Tuesday
Thunderstorms
82°/ 58° 28°/ 14°
70%
Wednesday
Thunderstorms
72°/ 65° 22°/ 18°
70%
Thursday
Thunderstorms
75°/ 60° 24°/ 16°
50%
Friday
Rain Showers
75°/ 62° 24°/ 17°
50%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
60%

Night: Clear. Patchy fog. Lows in the mid 40s. Light and variable winds.

Dixon, IL-ILZ010

Overnight
Clear
48°
0%
Monday
Rain Showers
75°/ 68° 24°/ 20°
70%
Tuesday
Thunderstorms
82°/ 60° 28°/ 16°
80%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
80%
Thursday
Thunderstorms
78°/ 62° 26°/ 17°
50%
Friday
Rain Showers
78°/ 62° 26°/ 17°
50%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
50%

Night: Mostly clear. Patchy fog. Lows in the upper 40s. North winds around 5 mph late in the evening, becoming light and variable.

Waukegan, IL-ILZ006

Overnight
Clear
48°
0%
Monday
Rain Showers
75°/ 65° 24°/ 18°
60%
Tuesday
Thunderstorms
82°/ 60° 28°/ 16°
70%
Wednesday
Thunderstorms
72°/ 65° 22°/ 18°
70%
Thursday
Thunderstorms
75°/ 62° 24°/ 17°
50%
Friday
Rain Showers
75°/ 62° 24°/ 17°
50%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
60%

Night: Clear. Patchy fog after midnight. Lows in the upper 40s. Northwest winds around 5 mph.

Rochelle, IL-ILZ008

Overnight
Clear
45°
0%
Monday
Rain Showers
75°/ 65° 24°/ 18°
70%
Tuesday
Thunderstorms
82°/ 58° 28°/ 14°
80%
Wednesday
Thunderstorms
75°/ 62° 24°/ 17°
80%
Thursday
Thunderstorms
78°/ 60° 26°/ 16°
50%
Friday
Rain Showers
78°/ 62° 26°/ 17°
50%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
50%

Night: Mostly clear. Patchy fog. Lows in the mid 40s. Light and variable winds.

Kankakee, IL-ILZ023

Overnight
Clear
52°11°
0%
Monday
Mostly Cloudy
78°/ 65° 26°/ 18°
20%
Tuesday
Thunderstorms
90°/ 65° 32°/ 18°
70%
Wednesday
Thunderstorms
82°/ 68° 28°/ 20°
70%
Thursday
Thunderstorms
82°/ 65° 28°/ 18°
50%
Friday
Rain Showers
80°/ 62° 27°/ 17°
40%
Saturday
Rain Showers
82°/ 62° 28°/ 17°
50%

Night: Mostly clear. Lows in the lower 50s. North winds around 5 mph late in the evening, becoming light and variable.

Belvidere, IL-ILZ004

Overnight
Clear
45°
0%
Monday
Rain Showers
75°/ 65° 24°/ 18°
70%
Tuesday
Thunderstorms
80°/ 58° 27°/ 14°
70%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
70%
Thursday
Thunderstorms
75°/ 58° 24°/ 14°
50%
Friday
Rain Showers
75°/ 60° 24°/ 16°
50%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
60%

Night: Clear. Patchy fog. Lows in the mid 40s. Light and variable winds.

Pontiac, IL-ILZ032

Overnight
Clear
52°11°
0%
Monday
Mostly Cloudy
78°/ 68° 26°/ 20°
20%
Tuesday
Thunderstorms
92°/ 65° 33°/ 18°
70%
Wednesday
Thunderstorms
82°/ 68° 28°/ 20°
70%
Thursday
Thunderstorms
85°/ 65° 29°/ 18°
50%
Friday
Rain Showers
82°/ 65° 28°/ 18°
40%
Saturday
Rain Showers
82°/ 62° 28°/ 17°
50%

Night: Mostly clear. Lows in the lower 50s. Northeast winds around 5 mph.

Gary, IN-INZ001

Overnight
Cloudy
52°11°
0%
Monday
Mostly Cloudy
75°/ 65° 24°/ 18°
20%
Tuesday
Thunderstorms
88°/ 65° 31°/ 18°
70%
Wednesday
Thunderstorms
78°/ 68° 26°/ 20°
70%
Thursday
Thunderstorms
80°/ 65° 27°/ 18°
50%
Friday
Rain Showers
78°/ 62° 26°/ 17°
40%
Saturday
Rain Showers
80°/ 62° 27°/ 17°
50%

Night: Mostly clear late in the evening, then becoming partly cloudy. Lows in the lower 50s. North winds around 5 mph.

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