Diamond, IL Weather Forecast & Current Conditions

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Diamond Weather Map
UTC Time: 9/27/2026, 12:44
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Diamond, IL Regional Weather

Expires:202609271300;;138087
ASUS43 KLOT 271210
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
700 AM CDT SUN SEP 27 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>023-271300-
NORTHEAST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  FOG       51  49  92 CALM      30.13R VSB 1/4 TC  11   
6HR MIN TEMP:  49; 6HR MAX TEMP:  54;                                

CHICAGO-MIDWAY MOCLDY    50  49  96 CALM      30.13R TC  10           
6HR MIN TEMP:  49; 6HR MAX TEMP:  57;                                

AURORA         FOG       46  46 100 CALM      30.13R VSB 1/4 TC   8   
6HR MIN TEMP:  46; 6HR MAX TEMP:  50;                                

JOLIET*        PTCLDY    47  47 100 CALM      30.14R TC   9           
WAUKEGAN       FOG       46  46 100 CALM      30.13R VSB 1/4 TC   8   
6HR MIN TEMP:  44; 6HR MAX TEMP:  49;                                

DUPAGE AIRPORT FOG       47  45  93 N3        30.14R VSB 1/2 TC   8   
6HR MIN TEMP:  45; 6HR MAX TEMP:  51;                                

KANKAKEE*      FOG       45  43  95 CALM      30.14R VSB<1/4 TC   7   
WHEELING       CLOUDY    48  48 100 CALM      30.14R TC   9           
6HR MIN TEMP:  47; 6HR MAX TEMP:  50;                                

ROMEOVILLE*    CLEAR     52  52 100 N3        30.13R FOG     TC  11   
LANSING*       FOG       44  44 100 CALM      30.13S VSB<1/4 TC   7   
NORTHERLY ISL*   N/A     57  54  89 NW1         N/A  TC  14           
$$


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

Diamond, IL

Today
Mostly Cloudy
72°/ 50° 22°/ 10°
0%
Monday
Cloudy
75°/ 52° 24°/ 11°
0%
Tuesday
Cloudy
78°/ 62° 26°/ 17°
40%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
60%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Rain Showers
68°20°
30%

Day: Mostly cloudy in the morning, then becoming partly cloudy. Patchy fog early in the morning. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy. Lows around 50. Northeast winds around 5 mph in the evening, becoming light and variable.

Channahon, IL

Today
Cloudy
72°/ 52° 22°/ 11°
0%
Monday
Cloudy
75°/ 52° 24°/ 11°
0%
Tuesday
Cloudy
78°/ 62° 26°/ 17°
30%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
50%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Rain Showers
68°20°
30%

Day: Partly cloudy. Patchy fog early in the morning. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds around 5 mph.

Kankakee, IL

Today
Cloudy
72°/ 48° 22°/ 9°
0%
Monday
Cloudy
75°/ 52° 24°/ 11°
0%
Tuesday
Cloudy
78°/ 60° 26°/ 16°
20%
Wednesday
Thunderstorms
75°/ 62° 24°/ 17°
50%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Rain Showers
68°20°
30%

Day: Partly cloudy. Patchy fog early in the morning. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. Northeast winds around 5 mph in the evening, becoming light and variable.

Pontiac, IL

Today
Cloudy
75°/ 48° 24°/ 9°
0%
Monday
Sunny
75°/ 52° 24°/ 11°
0%
Tuesday
Cloudy
78°/ 62° 26°/ 17°
20%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
50%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Rain Showers
68°20°
40%

Day: Partly cloudy. Patchy fog early in the morning. Highs in the mid 70s. Northeast winds around 5 mph.

Night: Partly cloudy. Lows in the upper 40s. Northeast winds around 5 mph in the evening, becoming light and variable.

Joliet, IL

Today
Mostly Cloudy
72°/ 52° 22°/ 11°
0%
Monday
Cloudy
75°/ 52° 24°/ 11°
0%
Tuesday
Cloudy
75°/ 62° 24°/ 17°
40%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
60%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Rain Showers
68°20°
30%

Day: Mostly cloudy in the morning, then becoming partly cloudy. Patchy fog early in the morning. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds around 5 mph.

Oswego, IL

Today
Mostly Cloudy
72°/ 50° 22°/ 10°
0%
Monday
Cloudy
75°/ 52° 24°/ 11°
0%
Tuesday
Cloudy
75°/ 62° 24°/ 17°
40%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
60%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Rain Showers
68°20°
30%

Day: Mostly cloudy in the morning, then becoming partly cloudy. Patchy fog early in the morning. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy. Lows around 50. North winds around 5 mph.

Ottawa, IL

Today
Mostly Cloudy
72°/ 48° 22°/ 9°
0%
Monday
Sunny
75°/ 52° 24°/ 11°
0%
Tuesday
Cloudy
75°/ 62° 24°/ 17°
50%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
70%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Rain Showers
68°20°
30%

Day: Mostly cloudy in the morning, then becoming partly cloudy. Patchy fog early in the morning. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy. Lows in the upper 40s. Northeast winds around 5 mph.

Paxton, IL

Today
Cloudy
75°/ 48° 24°/ 9°
0%
Monday
Cloudy
75°/ 52° 24°/ 11°
0%
Tuesday
Cloudy
78°/ 62° 26°/ 17°
0%
Wednesday
Thunderstorms
78°/ 65° 26°/ 18°
50%
Thursday
Rain Showers
75°/ 60° 24°/ 16°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
50%
Saturday
Rain Showers
68°20°
40%

Day: Partly cloudy. Patchy fog early in the morning. Highs in the mid 70s. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. North winds around 5 mph.

Crete, IL

Today
Cloudy
72°/ 52° 22°/ 11°
0%
Monday
Cloudy
72°/ 52° 22°/ 11°
0%
Tuesday
Cloudy
75°/ 58° 24°/ 14°
20%
Wednesday
Thunderstorms
75°/ 62° 24°/ 17°
50%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Rain Showers
68°20°
30%

Day: Partly cloudy. Patchy fog early in the morning. Highs in the lower 70s. Temperature falling into the mid 60s in the afternoon. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds around 5 mph.

Watseka, IL

Today
Cloudy
75°/ 48° 24°/ 9°
0%
Monday
Cloudy
75°/ 52° 24°/ 11°
0%
Tuesday
Cloudy
78°/ 60° 26°/ 16°
0%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
50%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
50%
Saturday
Rain Showers
68°20°
40%

Day: Partly cloudy. Patchy fog early in the morning. Highs in the mid 70s. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. Northeast winds around 5 mph in the evening, becoming light and variable.

Calumet City, IL

Today
Cloudy
70°/ 52° 21°/ 11°
0%
Monday
Cloudy
72°/ 52° 22°/ 11°
0%
Tuesday
Cloudy
75°/ 62° 24°/ 17°
30%
Wednesday
Thunderstorms
72°/ 65° 22°/ 18°
50%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
65°/ 55° 18°/ 13°
40%
Saturday
Rain Showers
65°18°
30%

Day: Partly cloudy. Patchy fog early in the morning. Highs around 70. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds around 5 mph.

Aurora, IL

Today
Mostly Cloudy
70°/ 48° 21°/ 9°
0%
Monday
Sunny
72°/ 52° 22°/ 11°
0%
Tuesday
Cloudy
75°/ 60° 24°/ 16°
50%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
60%
Thursday
Rain Showers
72°/ 55° 22°/ 13°
70%
Friday
Rain Showers
65°/ 52° 18°/ 11°
40%
Saturday
Mostly Cloudy
65°18°
0%

Day: Mostly cloudy in the morning, then becoming partly cloudy. Patchy fog early in the morning. Highs around 70. Northeast winds around 5 mph.

Night: Partly cloudy. Lows in the upper 40s. North winds around 5 mph.

DeKalb, IL

Today
Mostly Cloudy
72°/ 48° 22°/ 9°
0%
Monday
Sunny
72°/ 52° 22°/ 11°
0%
Tuesday
Cloudy
75°/ 60° 24°/ 16°
50%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
70%
Thursday
Rain Showers
72°/ 55° 22°/ 13°
70%
Friday
Rain Showers
65°/ 52° 18°/ 11°
40%
Saturday
Mostly Cloudy
65°18°
0%

Day: Mostly cloudy in the morning, then becoming partly cloudy. Patchy fog early in the morning. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy. Lows in the upper 40s. North winds around 5 mph.

Naperville, IL

Today
Mostly Cloudy
72°/ 52° 22°/ 11°
0%
Monday
Cloudy
72°/ 52° 22°/ 11°
0%
Tuesday
Cloudy
75°/ 62° 24°/ 17°
40%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
60%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
65°/ 55° 18°/ 13°
40%
Saturday
Mostly Cloudy
65°18°
0%

Day: Mostly cloudy in the morning, then becoming partly cloudy. Patchy fog early in the morning. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds around 5 mph.

Chicago, IL

Today
Cloudy
68°/ 55° 20°/ 13°
0%
Monday
Cloudy
72°/ 55° 22°/ 13°
0%
Tuesday
Cloudy
75°/ 62° 24°/ 17°
40%
Wednesday
Thunderstorms
72°/ 65° 22°/ 18°
60%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
65°/ 55° 18°/ 13°
40%
Saturday
Rain Showers
65°18°
30%

Day: Partly cloudy. Patchy fog early in the morning. Highs in the upper 60s. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 50s. North winds around 5 mph.

Gary, IN

Today
Cloudy
68°/ 52° 20°/ 11°
0%
Monday
Cloudy
72°/ 52° 22°/ 11°
0%
Tuesday
Cloudy
75°/ 58° 24°/ 14°
20%
Wednesday
Thunderstorms
75°/ 62° 24°/ 17°
50%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
65°/ 55° 18°/ 13°
40%
Saturday
Rain Showers
65°18°
30%

Day: Partly cloudy. Patchy fog early in the morning. Highs in the upper 60s. Temperature falling into the lower 60s in the afternoon. North winds 5 to 10 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. North winds around 5 mph.

Bloomington, IL

Today
Sunny
75°/ 48° 24°/ 9°
0%
Monday
Sunny
75°/ 52° 24°/ 11°
0%
Tuesday
Sunny
78°/ 62° 26°/ 17°
0%
Wednesday
Rain Showers
75°/ 65° 24°/ 18°
50%
Thursday
Rain Showers
75°/ 60° 24°/ 16°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
50%
Saturday
Rain Showers
68°20°
40%

Day: Mostly sunny. Highs in the mid 70s. Northeast winds around 5 mph.

Night: Mostly clear. Lows in the upper 40s. Northeast winds around 5 mph.

Roselawn, IN

Today
Cloudy
72°/ 48° 22°/ 9°
0%
Monday
Cloudy
75°/ 50° 24°/ 10°
0%
Tuesday
Sunny
75°/ 58° 24°/ 14°
0%
Wednesday
Thunderstorms
75°/ 62° 24°/ 17°
50%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
70%
Friday
Rain Showers
68°/ 55° 20°/ 13°
40%
Saturday
Rain Showers
68°20°
40%

Day: Partly cloudy in the morning, then becoming mostly sunny. Patchy fog early in the morning. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. North winds around 5 mph in the evening, becoming light and variable.

Lacon, IL

Today
Partly Cloudy
72°/ 50° 22°/ 10°
0%
Monday
Sunny
75°/ 52° 24°/ 11°
0%
Tuesday
Sunny
75°/ 62° 24°/ 17°
50%
Wed Night-Thu
Rain Showers
65°18°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°/ 55° 20°/ 13°
50%
Saturday
Rain Showers
68°20°
30%

Day: Partly sunny. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly clear. Lows around 50. Northeast winds around 5 mph.

Eureka, IL

Today
Partly Cloudy
75°/ 50° 24°/ 10°
0%
Monday
Sunny
75°/ 52° 24°/ 11°
0%
Tuesday
Sunny
78°/ 62° 26°/ 17°
0%
Wednesday
Rain Showers
75°/ 65° 24°/ 18°
60%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
70%
Fri Night
Rain Showers
55°13°
40%
Saturday
Rain Showers
68°20°
30%

Day: Partly sunny. Highs in the mid 70s. Northeast winds around 5 mph.

Night: Mostly clear. Lows around 50. Northeast winds around 5 mph.

Names listed above may include county names.

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