Arrow, IL Weather Forecast & Current Conditions

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Arrow Weather Map
UTC Time: 9/17/2026, 19:12
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Aeronautical Observation: Automated synoptic observations via NWS Gateway.
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Arrow, IL Regional Weather

Expires:202609172000;;616799
ASUS43 KLOT 171906
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 PM CDT THU SEP 17 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>023-172000-
NORTHEAST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  CLOUDY    78  71  79 NW6       30.18F HX  80  TC  26   
CHICAGO-MIDWAY PTSUNNY   81  71  71 N8        30.17F HX  85  TC  27   
AURORA         PTSUNNY   81  73  76 NW6       30.19S HX  86  TC  27   
JOLIET*        CLOUDY    83  76  79 SW3       30.18F HX  90  TC  28   
WAUKEGAN       CLOUDY    70  69  97 VRB5      30.20S FOG     TC  21   
DUPAGE AIRPORT CLOUDY    78  72  81 N5        30.19F HX  80  TC  26   
KANKAKEE*      MOSUNNY   86  70  59 S7        30.18F HX  91  TC  30   
WHEELING       CLOUDY    75  71  87 VRB5      30.21S TC  24           
ROMEOVILLE*    PTSUNNY   82  81  94 W7        30.18F HX  95  TC  28   
LANSING*       CLOUDY    81  71  71 CALM      30.18F HX  85  TC  27   
NORTHERLY ISL*   N/A     72  67  84 N7          N/A  TC  22           
$$


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

Arrow, IL

Today
Rain Showers
72°/ 62° 22°/ 17°
40%
Friday
Rain Showers
72°/ 62° 22°/ 17°
80%
Saturday
Thunderstorms
78°/ 62° 26°/ 17°
100%
Sunday
Rain Showers
68°/ 55° 20°/ 13°
50%
Monday
Rain Showers
65°/ 52° 18°/ 11°
60%
Tuesday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Wednesday
Cloudy
70°21°
0%

Day: Cloudy. A chance of showers late in the morning, then a slight chance of showers in the afternoon. Highs in the lower 70s. Northeast winds 5 to 10 mph. Chance of precipitation 40 percent.

Night: Mostly cloudy. Lows in the lower 60s. Northeast winds 5 to 10 mph.

Crystal Lake, IL

Today
Rain Showers
72°/ 58° 22°/ 14°
40%
Friday
Rain Showers
72°/ 62° 22°/ 17°
80%
Saturday
Thunderstorms
78°/ 62° 26°/ 17°
100%
Sunday
Rain Showers
68°/ 55° 20°/ 13°
50%
Monday
Rain Showers
65°/ 52° 18°/ 11°
60%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
72°22°
0%

Day: Cloudy. A chance of showers late in the morning, then a slight chance of showers in the afternoon. Highs in the lower 70s. Northeast winds around 5 mph. Chance of precipitation 40 percent.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Kenosha, WI

Today
Rain Showers
72°/ 60° 22°/ 16°
30%
Friday
Rain Showers
68°/ 60° 20°/ 16°
100%
Saturday
Thunderstorms
75°/ 58° 24°/ 14°
100%
Sunday
Rain Showers
68°/ 52° 20°/ 11°
40%
Monday
Rain Showers
65°/ 52° 18°/ 11°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Partly Cloudy
70°21°
0%

Day: Cloudy. Chance of light showers late in the morning, then chance of sprinkles in the afternoon. Highs in the lower 70s. Northeast winds 5 to 10 mph. Chance of showers 30 percent.

Night: Mostly cloudy through around midnight then becoming partly cloudy. Lows around 60. Northeast winds 5 to 10 mph.

Whitewater, WI

Today
Rain Showers
72°/ 58° 22°/ 14°
30%
Friday
Rain Showers
68°/ 60° 20°/ 16°
100%
Saturday
Thunderstorms
75°/ 58° 24°/ 14°
100%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
40%
Monday
Rain Showers
62°/ 50° 17°/ 10°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Partly Cloudy
70°21°
0%

Day: Cloudy. Chance of light showers late in the morning, then chance of sprinkles in the afternoon. Highs in the lower 70s. Northeast winds around 5 mph. Chance of showers 30 percent.

Night: Mostly cloudy through around midnight then becoming partly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Evanston, IL

Today
Rain Showers
75°/ 62° 24°/ 17°
40%
Friday
Mostly Cloudy
72°/ 62° 22°/ 17°
70%
Saturday
Thunderstorms
78°/ 62° 26°/ 17°
90%
Sunday
Rain Showers
68°/ 55° 20°/ 13°
50%
Monday
Rain Showers
65°/ 55° 18°/ 13°
60%
Tuesday
Mostly Cloudy
65°/ 55° 18°/ 13°
0%
Wednesday
Cloudy
72°22°
0%

Day: Cloudy. A chance of showers late in the morning, then a slight chance of showers in the afternoon. Highs in the mid 70s. Northeast winds 5 to 10 mph. Chance of precipitation 40 percent.

Night: Mostly cloudy. Lows in the lower 60s. Northeast winds 5 to 10 mph.

Racine, WI

Today
Rain Showers
72°/ 58° 22°/ 14°
30%
Friday
Rain Showers
68°/ 60° 20°/ 16°
100%
Saturday
Thunderstorms
75°/ 58° 24°/ 14°
100%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
40%
Monday
Rain Showers
62°/ 52° 17°/ 11°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Partly Cloudy
68°20°
0%

Day: Cloudy. Chance of light showers late in the morning, then chance of sprinkles in the afternoon. Highs in the lower 70s. Northeast winds 5 to 10 mph. Chance of showers 30 percent.

Night: Mostly cloudy through around midnight then becoming partly cloudy. Lows in the upper 50s. Northeast winds up to 10 mph.

Aurora, IL

Today
Rain Showers
75°/ 62° 24°/ 17°
40%
Friday
Rain Showers
75°/ 62° 24°/ 17°
70%
Saturday
Thunderstorms
82°/ 62° 28°/ 17°
90%
Sunday
Thunderstorms
70°/ 55° 21°/ 13°
50%
Monday
Rain Showers
65°/ 52° 18°/ 11°
60%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Cloudy
72°22°
0%

Day: Mostly cloudy. A chance of showers late in the morning. A slight chance of showers in the afternoon. Highs in the mid 70s. East winds around 5 mph, becoming north in the afternoon. Chance of precipitation 40 percent.

Night: Mostly cloudy. Lows in the lower 60s. Northeast winds 5 to 10 mph.

Belvidere, IL

Today
Rain Showers
75°/ 58° 24°/ 14°
40%
Friday
Rain Showers
75°/ 62° 24°/ 17°
80%
Saturday
Thunderstorms
78°/ 60° 26°/ 16°
90%
Sunday
Rain Showers
68°/ 55° 20°/ 13°
50%
Monday
Rain Showers
65°/ 50° 18°/ 10°
60%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
72°22°
0%

Day: Cloudy. A chance of showers late in the morning, then a slight chance of showers in the afternoon. Highs in the mid 70s. Northeast winds around 5 mph. Chance of precipitation 40 percent.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Naperville, IL

Today
Rain Showers
78°/ 65° 26°/ 18°
40%
Friday
Mostly Cloudy
75°/ 65° 24°/ 18°
70%
Saturday
Thunderstorms
82°/ 65° 28°/ 18°
90%
Sunday
Thunderstorms
70°/ 58° 21°/ 14°
50%
Monday
Rain Showers
65°/ 55° 18°/ 13°
60%
Tuesday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Wednesday
Cloudy
72°22°
0%

Day: Mostly cloudy. A chance of showers late in the morning. A slight chance of showers in the afternoon. Highs in the upper 70s. Southeast winds around 5 mph, becoming north in the afternoon. Chance of precipitation 40 percent.

Night: Mostly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph.

Chicago, IL

Today
Rain Showers
75°/ 65° 24°/ 18°
50%
Friday
Mostly Cloudy
72°/ 65° 22°/ 18°
70%
Saturday
Thunderstorms
82°/ 65° 28°/ 18°
90%
Sunday
Thunderstorms
70°/ 58° 21°/ 14°
50%
Monday
Rain Showers
65°/ 55° 18°/ 13°
60%
Tuesday
Mostly Cloudy
68°/ 58° 20°/ 14°
0%
Wednesday
Cloudy
72°22°
0%

Day: Mostly cloudy. A chance of showers late in the morning. A slight chance of showers in the afternoon. Highs in the mid 70s. East winds around 5 mph, becoming north in the afternoon. Chance of precipitation 50 percent.

Night: Mostly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph.

Waukesha, WI

Today
Rain Showers
70°/ 58° 21°/ 14°
30%
Friday
Rain Showers
68°/ 58° 20°/ 14°
100%
Saturday
Thunderstorms
72°/ 58° 22°/ 14°
100%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
40%
Monday
Rain Showers
62°/ 52° 17°/ 11°
40%
Tuesday
Rain Showers
62°/ 52° 17°/ 11°
20%
Wednesday
Partly Cloudy
68°20°
0%

Day: Cloudy. Chance of light showers late in the morning, then chance of sprinkles in the afternoon. Highs around 70. Northeast winds 5 to 10 mph. Chance of showers 30 percent.

Night: Mostly cloudy through around midnight then becoming partly cloudy. Lows in the upper 50s. Northeast winds up to 10 mph.

DeKalb, IL

Today
Rain Showers
78°/ 62° 26°/ 17°
40%
Friday
Rain Showers
75°/ 62° 24°/ 17°
70%
Saturday
Thunderstorms
82°/ 62° 28°/ 17°
90%
Sunday
Thunderstorms
70°/ 55° 21°/ 13°
50%
Monday
Rain Showers
65°/ 52° 18°/ 11°
60%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Cloudy
72°22°
0%

Day: Mostly cloudy. A chance of showers late in the morning. A slight chance of showers in the afternoon. Highs in the upper 70s. Southeast winds around 5 mph, becoming north in the afternoon. Chance of precipitation 40 percent.

Night: Mostly cloudy. Lows in the lower 60s. Northeast winds 5 to 10 mph.

Milwaukee, WI

Today
Rain Showers
68°/ 58° 20°/ 14°
30%
Friday
Rain Showers
68°/ 58° 20°/ 14°
100%
Saturday
Thunderstorms
72°/ 58° 22°/ 14°
100%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
40%
Monday
Rain Showers
62°/ 52° 17°/ 11°
40%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Partly Cloudy
68°20°
0%

Day: Cloudy. Chance of light showers late in the morning, then chance of sprinkles in the afternoon. Near steady temperature in the upper 60s. Northeast winds 5 to 10 mph. Chance of showers 30 percent.

Night: Mostly cloudy through around midnight then becoming partly cloudy. Lows in the upper 50s. Northeast winds up to 10 mph.

Janesville, WI

Today
Sprinkles
72°/ 58° 22°/ 14°
0%
Friday
Rain Showers
70°/ 60° 21°/ 16°
100%
Saturday
Thunderstorms
78°/ 58° 26°/ 14°
100%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
50%
Monday
Rain Showers
62°/ 50° 17°/ 10°
50%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Partly Cloudy
70°21°
0%

Day: Cloudy. Chance of sprinkles. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Mostly cloudy through around midnight then becoming partly cloudy. Lows in the upper 50s. Northeast winds 5 to 10 mph.

Watertown, WI

Today
Sprinkles
72°/ 55° 22°/ 13°
0%
Friday
Rain Showers
68°/ 58° 20°/ 14°
100%
Saturday
Thunderstorms
75°/ 58° 24°/ 14°
100%
Sunday
Rain Showers
68°/ 52° 20°/ 11°
30%
Monday
Rain Showers
62°/ 50° 17°/ 10°
40%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Partly Cloudy
72°22°
0%

Day: Cloudy. Chance of sprinkles through the day. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Mostly cloudy through around midnight then becoming partly cloudy. Lows in the mid 50s. Northeast winds up to 10 mph.

Rockford, IL

Today
Rain Showers
75°/ 58° 24°/ 14°
40%
Friday
Rain Showers
75°/ 62° 24°/ 17°
80%
Saturday
Thunderstorms
78°/ 60° 26°/ 16°
90%
Sunday
Rain Showers
68°/ 52° 20°/ 11°
50%
Monday
Rain Showers
65°/ 50° 18°/ 10°
50%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
72°22°
0%

Day: Cloudy. A chance of showers late in the morning, then a slight chance of showers in the afternoon. Highs in the mid 70s. Northeast winds around 5 mph. Chance of precipitation 40 percent.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Rochelle, IL

Today
Rain Showers
75°/ 60° 24°/ 16°
20%
Friday
Rain Showers
75°/ 62° 24°/ 17°
70%
Saturday
Thunderstorms
82°/ 62° 28°/ 17°
90%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
50%
Monday
Rain Showers
65°/ 52° 18°/ 11°
60%
Tuesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Wednesday
Cloudy
72°22°
0%

Day: Mostly cloudy. A slight chance of showers. Highs in the mid 70s. Northeast winds around 5 mph. Chance of precipitation 20 percent.

Night: Mostly cloudy. Lows around 60. Northeast winds around 5 mph.

Oswego, IL

Today
Rain Showers
78°/ 65° 26°/ 18°
50%
Friday
Mostly Cloudy
78°/ 65° 26°/ 18°
50%
Saturday
Thunderstorms
85°/ 65° 29°/ 18°
80%
Sunday
Thunderstorms
72°/ 58° 22°/ 14°
50%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tuesday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Wednesday
Cloudy
75°24°
0%

Day: Mostly cloudy. A chance of showers late in the morning. A slight chance of showers late. Highs in the upper 70s. South winds around 5 mph, becoming north in the afternoon. Chance of precipitation 50 percent.

Night: Mostly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph.

Joliet, IL

Today
Rain Showers
78°/ 65° 26°/ 18°
50%
Friday
Mostly Cloudy
75°/ 65° 24°/ 18°
50%
Saturday
Thunderstorms
82°/ 65° 28°/ 18°
70%
Sunday
Thunderstorms
72°/ 58° 22°/ 14°
50%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tuesday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%
Wednesday
Cloudy
72°22°
0%

Day: Mostly cloudy. A chance of showers late in the morning. A slight chance of showers late. Highs in the upper 70s. South winds around 5 mph, becoming north in the afternoon. Chance of precipitation 50 percent.

Night: Mostly cloudy. Lows in the mid 60s. Northeast winds around 5 mph.

Calumet City, IL

Today
Rain Showers
78°/ 65° 26°/ 18°
50%
Friday
Mostly Cloudy
75°/ 65° 24°/ 18°
50%
Saturday
Thunderstorms
82°/ 65° 28°/ 18°
80%
Sunday
Thunderstorms
72°/ 58° 22°/ 14°
50%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tuesday
Mostly Cloudy
68°/ 58° 20°/ 14°
0%
Wednesday
Cloudy
72°22°
0%

Day: Mostly cloudy. A chance of showers late in the morning. A slight chance of showers late. Highs in the upper 70s. South winds around 5 mph, becoming north in the afternoon. Chance of precipitation 50 percent.

Night: Mostly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph.

Names listed above may include county names.

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