Brown Park, IL Hourly Weather Updates

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Brown Park Weather Map
UTC Time: 9/13/2026, 22:16
Your Time:

Aeronautical Observation: Automated synoptic observations via NWS Gateway.
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Brown Park, IL Regional Weather

Expires:202609132300;;404938
ASUS43 KLOT 132212
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 PM CDT SUN SEP 13 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.


ILZ003-004-008-010-011-017-018-132300-
NORTH CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       PTSUNNY   64  53  67 W8        30.16S TC  18           
FREEPORT*      PTSUNNY   63  56  76 W6        30.17S TC  17           
ROCHELLE*      CLOUDY    59  52  76 NW7       30.16F TC  15           
DE KALB*       PTSUNNY   59  55  84 W7        30.16S TC  15           
PERU*          CLOUDY    61  55  82 W3        30.15F 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

Brown Park, IL

Late Afternoon
Rain Showers
45°
50%
Monday
Rain Showers
75°/ 65° 24°/ 18°
70%
Tuesday
Thunderstorms
78°/ 55° 26°/ 13°
80%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
70%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
50%
Friday
Rain Showers
75°/ 60° 24°/ 16°
50%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
60%

Day: Mostly cloudy. Scattered showers. Northwest winds 5 to 10 mph. Chance of precipitation 50 percent.

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

Belvidere, IL

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

Day: Mostly cloudy. Scattered showers. Temperatures in the lower 60s. Northwest winds 5 to 10 mph. Chance of precipitation 50 percent.

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

Rochelle, IL

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

Day: Mostly cloudy. Scattered showers. Temperatures in the lower 60s. North winds 5 to 10 mph. Chance of precipitation 50 percent.

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

DeKalb, IL

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

Day: Mostly cloudy. Scattered showers. Temperatures in the lower 60s. North winds 10 to 15 mph. Chance of precipitation 50 percent.

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

Janesville, WI

Today
Rain Showers
62°/ 45° 17°/
50%
Monday
Rain Showers
72°/ 65° 22°/ 18°
80%
Tuesday
Thunderstorms
78°/ 55° 26°/ 13°
80%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
70%
Thursday
Thunderstorms
75°/ 58° 24°/ 14°
50%
Friday
Thunderstorms
72°/ 58° 22°/ 14°
60%

Day: Cooler. Mostly cloudy early in the afternoon then becoming mostly sunny. Scattered light showers early in the afternoon. Near steady temperature in the lower 60s. Northwest winds 5 to 10 mph. Chance of showers 50 percent.

Night: Colder. Mostly clear. Lows in the mid 40s. West winds up to 5 mph through around midnight becoming calm.

Freeport, IL

Afternoon
Rain Showers
65°/ 45° 18°/
20%
Monday
Rain Showers
72°/ 65° 22°/ 18°
70%
Tuesday
Rain Showers
78°/ 55° 26°/ 13°
80%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
70%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
50%
Friday
Rain Showers
75°24°
50%

Day: Partly sunny with a 20 percent chance of showers. Not as warm. Near steady temperature in the mid 60s. Northwest winds 5 to 10 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s. Northwest winds around 5 mph, becoming north after midnight.

Crystal Lake, IL

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

Day: Mostly cloudy. Scattered showers. Temperatures in the lower 60s. Northwest winds 5 to 10 mph. Chance of precipitation 50 percent.

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

Whitewater, WI

Today
Rain Showers
62°/ 45° 17°/
50%
Monday
Rain Showers
72°/ 62° 22°/ 17°
80%
Tuesday
Thunderstorms
78°/ 55° 26°/ 13°
80%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
70%
Thursday
Thunderstorms
75°/ 58° 24°/ 14°
50%
Friday
Thunderstorms
72°/ 60° 22°/ 16°
50%

Day: Cooler. Partly sunny. Scattered light showers early in the afternoon. Near steady temperature in the lower 60s. Northwest winds 5 to 10 mph. Chance of showers 50 percent.

Night: Mostly clear. Lows in the mid 40s. West winds up to 5 mph through around midnight becoming calm.

Monroe, WI

Today
Rain Showers
62°/ 45° 17°/
50%
Monday
Rain Showers
72°/ 65° 22°/ 18°
80%
Tuesday
Thunderstorms
78°/ 55° 26°/ 13°
80%
Wednesday
Thunderstorms
72°/ 62° 22°/ 17°
70%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
50%
Friday
Thunderstorms
75°/ 60° 24°/ 16°
60%

Day: Cooler. Mostly cloudy early in the afternoon then becoming mostly sunny. Scattered light showers early in the afternoon. Near steady temperature in the lower 60s. West winds 5 to 10 mph. Chance of showers 50 percent.

Night: Mostly clear. Lows in the mid 40s. West winds up to 5 mph shifting to the north after midnight.

Dixon, IL

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

Day: Mostly cloudy. Scattered showers. Temperatures in the lower 60s. North winds 5 to 10 mph. Chance of precipitation 50 percent.

Night: Partly cloudy in the evening, then becoming mostly clear. Isolated showers early in the evening. Patchy fog late. Lows in the upper 40s. North winds around 5 mph in the evening, becoming light and variable. Chance of precipitation 20 percent.

Aurora, IL

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

Day: Numerous showers. Temperatures in the lower 60s. North winds around 10 mph. Chance of precipitation 60 percent.

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

Mount Carroll, IL

Afternoon
Rain Showers
68°/ 48° 20°/
30%
Monday
Rain Showers
72°/ 68° 22°/ 20°
70%
Tuesday
Rain Showers
78°/ 58° 26°/ 14°
80%
Wednesday
Rain Showers
75°/ 62° 24°/ 17°
80%
Thursday
Rain Showers
78°/ 60° 26°/ 16°
50%
Friday
Rain Showers
78°/ 62° 26°/ 17°
50%

Day: Partly sunny with a 30 percent chance of showers. Not as warm. Near steady temperature in the upper 60s. North winds 5 to 10 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. Northwest winds around 5 mph, becoming northeast after midnight.

Kenosha, WI

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

Day: Cooler. Mostly cloudy with scattered light showers. Near steady temperature in the mid 60s. Northwest winds 5 to 10 mph. Chance of showers 50 percent.

Night: Clear. Lows in the mid 40s. Northwest winds up to 5 mph.

Madison, WI

Today
Mostly Cloudy
65°/ 42° 18°/
0%
Monday
Rain Showers
72°/ 62° 22°/ 17°
80%
Tuesday
Rain Showers
75°/ 55° 24°/ 13°
80%
Wednesday
Thunderstorms
70°/ 60° 21°/ 16°
70%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
40%
Friday
Thunderstorms
72°/ 58° 22°/ 14°
60%

Day: Cooler. Mostly cloudy early in the afternoon then clearing. Highs in the mid 60s. West winds 5 to 10 mph.

Night: Mostly clear. Lows in the lower 40s. Northwest winds up to 5 mph.

Darlington, WI

Today
Rain Showers
62°/ 45° 17°/
40%
Monday
Rain Showers
70°/ 65° 21°/ 18°
80%
Tuesday
Thunderstorms
75°/ 55° 24°/ 13°
80%
Wednesday
Thunderstorms
70°/ 62° 21°/ 17°
70%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
50%
Friday
Thunderstorms
72°/ 60° 22°/ 16°
60%

Day: Cooler. Mostly cloudy early in the afternoon then clearing. Scattered light showers early in the afternoon. Near steady temperature in the lower 60s. Northwest winds up to 5 mph. Chance of showers 40 percent.

Night: Mostly clear. Lows in the mid 40s. West winds up to 5 mph shifting to the northeast after midnight.

Watertown, WI

Today
Mostly Cloudy
62°/ 42° 17°/
0%
Monday
Rain Showers
72°/ 62° 22°/ 17°
80%
Tuesday
Rain Showers
78°/ 55° 26°/ 13°
80%
Wednesday
Thunderstorms
72°/ 58° 22°/ 14°
70%
Thursday
Rain Showers
75°/ 58° 24°/ 14°
40%
Friday
Thunderstorms
72°/ 58° 22°/ 14°
60%

Day: Cooler. Mostly cloudy early in the afternoon then clearing. Near steady temperature in the lower 60s. West winds 5 to 10 mph.

Night: Colder. Mostly clear. Lows in the lower 40s. West winds up to 5 mph through around midnight becoming calm.

Galena, IL

Afternoon
Rain Showers
65°/ 48° 18°/
20%
Monday
Rain Showers
70°/ 65° 21°/ 18°
70%
Tuesday
Rain Showers
78°/ 55° 26°/ 13°
80%
Wed-Wed Night
Thunderstorms
72°22°
70%
Thursday
Rain Showers
75°/ 60° 24°/ 16°
50%
Fri-Fri Night
Rain Showers
75°24°
60%

Day: Partly sunny with a 20 percent chance of showers. Not as warm. Near steady temperature in the mid 60s. Northwest winds around 5 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. Northwest winds around 5 mph, becoming northeast after midnight.

Sterling, IL

Afternoon
Rain Showers
70°/ 48° 21°/
40%
Monday
Partly Cloudy
75°/ 68° 24°/ 20°
70%
Tuesday
Rain Showers
82°/ 60° 28°/ 16°
80%
Wednesday
Rain Showers
75°/ 65° 24°/ 18°
80%
Thursday
Rain Showers
78°/ 62° 26°/ 17°
50%
Friday
Rain Showers
78°/ 62° 26°/ 17°
50%

Day: Mostly cloudy with a 40 percent chance of showers. Not as warm. Near steady temperature around 70. North winds 5 to 10 mph.

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

Evanston, IL

Late Afternoon
Rain Showers
52°11°
60%
Monday
Mostly Cloudy
75°/ 65° 24°/ 18°
50%
Tuesday
Thunderstorms
85°/ 62° 29°/ 17°
70%
Wednesday
Thunderstorms
75°/ 65° 24°/ 18°
70%
Thursday
Rain Showers
78°/ 62° 26°/ 17°
50%
Friday
Rain Showers
75°/ 62° 24°/ 17°
50%
Saturday
Rain Showers
78°/ 62° 26°/ 17°
60%

Day: Numerous showers. Temperatures in the lower 60s. Northwest winds around 10 mph. Chance of precipitation 60 percent.

Night: Mostly clear. Lows in the lower 50s. Northwest winds 5 to 10 mph.

Waukegan, IL

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

Day: Mostly cloudy. Scattered showers. Temperatures in the lower 60s. Northwest winds around 10 mph. Chance of precipitation 50 percent.

Night: Mostly clear. Lows in the upper 40s. Northwest winds 5 to 10 mph.

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