Tri-County, IL Weather Forecast & Current Conditions

Feedback E-mail the Weather

Quick Clicks

Weather World

Tri-County, IL Weather Maps

°F °C°F °C
Tri-County Weather Map
UTC Time: 9/17/2026, 15:39
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Tri-County, IL Regional Weather

Expires:202609171600;;606171
ASUS43 KLOT 171510
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 AM 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.


ILZ025>027-034>036-040-047-049-050-058-095>099-171600-
WEST-CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         MOSUNNY   84  72  67 SW9       30.21S HX  89  TC  29   
GALESBURG*     CLOUDY    72  72 100 E5        30.24S FOG     TC  22   
MACOMB*        MOSUNNY   81  77  88 N5        30.24R HX  87  TC  27   
JACKSONVILLE*  SUNNY     87  71  59 W6        30.22R HX  92  TC  30   
PITTSFIELD*    SUNNY     87  71  58 SW5       30.23S HX  93  TC  31   
$$


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

Tri-county, IL

Today
Rain Showers
82°/ 65° 28°/ 18°
20%
Friday
Thunderstorms
82°/ 68° 28°/ 20°
50%
Saturday
Mostly Cloudy
88°/ 65° 31°/ 18°
70%
Sun Night
Thunderstorms
60°16°
60%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy late this morning, then becoming partly sunny. Isolated showers late this morning. Patchy fog late this morning. Highs in the lower 80s. Southeast winds around 5 mph, becoming west this afternoon. Chance of rain 20 percent.

Night: Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 60s. Northeast winds around 5 mph. Chance of rain 20 percent.

Canton, IL

Today
Partly Cloudy
88°/ 68° 31°/ 20°
20%
Friday
Thunderstorms
85°/ 68° 29°/ 20°
30%
Saturday
Mostly Cloudy
88°/ 68° 31°/ 20°
70%
Sunday
Thunderstorms
78°/ 62° 26°/ 17°
60%
Monday
Rain Showers
70°/ 58° 21°/ 14°
60%
Tuesday
Partly Cloudy
70°/ 55° 21°/ 13°
0%

Day: Partly sunny. Highs in the upper 80s. East winds around 5 mph, becoming southwest this afternoon. Heat index values up to 100 this afternoon.

Night: Partly cloudy. A slight chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Northeast winds around 5 mph. Chance of rain 20 percent.

Peoria, IL

Today
Rain Showers
85°/ 65° 29°/ 18°
20%
Friday
Thunderstorms
82°/ 68° 28°/ 20°
50%
Saturday
Mostly Cloudy
88°/ 68° 31°/ 20°
70%
Sun Night
Thunderstorms
62°17°
60%
Monday
Rain Showers
70°/ 58° 21°/ 14°
60%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy late this morning, then becoming partly sunny. Isolated showers late this morning. Highs in the mid 80s. East winds around 5 mph, becoming west this afternoon. Chance of rain 20 percent.

Night: Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 60s. Northeast winds around 5 mph. Chance of rain 20 percent.

Toulon, IL

Today
Rain Showers
82°/ 65° 28°/ 18°
30%
Friday
Rain Showers
78°/ 68° 26°/ 20°
50%
Saturday
Rain Showers
85°/ 65° 29°/ 18°
70%
Sun Night
Thunderstorms
58°14°
60%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy. Isolated showers late this morning. Highs in the lower 80s. Southeast winds around 5 mph, becoming northwest this afternoon. Chance of rain 20 percent.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the mid 60s. Northeast winds around 5 mph. Chance of rain 30 percent.

Macomb, IL

Today
Thunderstorms
85°/ 68° 29°/ 20°
20%
Friday
Rain Showers
85°/ 68° 29°/ 20°
40%
Saturday
Partly Cloudy
88°/ 68° 31°/ 20°
70%
Sunday
Thunderstorms
78°/ 60° 26°/ 16°
70%
Monday
Rain Showers
68°/ 58° 20°/ 14°
70%
Tuesday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%

Day: Partly sunny. A slight chance of showers and thunderstorms early this morning. Highs in the mid 80s. East winds around 5 mph, becoming west around 5 mph this afternoon. Chance of rain 20 percent.

Night: Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Northeast winds around 5 mph. Chance of rain 20 percent.

Pekin, IL

Today
Rain Showers
88°/ 68° 31°/ 20°
20%
Friday
Thunderstorms
85°/ 68° 29°/ 20°
40%
Saturday
Mostly Cloudy
90°/ 68° 32°/ 20°
70%
Sunday
Thunderstorms
78°26°
50%
Sun Night-Mon
Thunderstorms
62°17°
60%
Mon Night
Rain Showers
58°14°
40%
Tuesday
Partly Cloudy
72°/ 55° 22°/ 13°
0%

Day: Partly sunny. Isolated showers late this morning. Highs in the upper 80s. East winds around 5 mph, becoming west this afternoon. Chance of rain 20 percent.

Night: Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Northeast winds 5 to 10 mph. Chance of rain 20 percent.

Monmouth, IL

Today
Thunderstorms
82°/ 65° 28°/ 18°
50%
Friday
Rain Showers
82°/ 68° 28°/ 20°
50%
Saturday
Partly Cloudy
85°/ 65° 29°/ 18°
70%
Sunday
Thunderstorms
75°/ 60° 24°/ 16°
60%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tuesday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%

Day: Patchy fog early this morning. Mostly cloudy with a chance of showers with a slight chance of thunderstorms early this morning, then partly sunny this afternoon. Some thunderstorms may produce heavy rainfall early this morning. Highs in the lower 80s. East winds around 5 mph, becoming west this afternoon. Chance of rain 50 percent.

Night: Mostly cloudy. Humid with lows in the mid 60s. Northeast winds around 5 mph.

Havana, IL

Today
Partly Cloudy
90°/ 68° 32°/ 20°
20%
Friday
Thunderstorms
88°/ 68° 31°/ 20°
30%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
60%
Sunday
Rain Showers
82°/ 62° 28°/ 17°
60%
Monday
Rain Showers
72°/ 58° 22°/ 14°
60%
Tuesday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Wednesday
Sunny
75°24°
0%

Day: Partly sunny. Highs around 90. Northeast winds around 5 mph, becoming southwest this afternoon. Heat index values up to 100.

Night: Mostly clear in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Northeast winds around 5 mph. Chance of rain 20 percent.

Geneseo, IL

Today
Thunderstorms
80°/ 65° 27°/ 18°
50%
Friday
Rain Showers
78°/ 68° 26°/ 20°
50%
Saturday
Rain Showers
85°/ 65° 29°/ 18°
70%
Sun Night
Thunderstorms
58°14°
60%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy. A chance of showers with a slight chance of thunderstorms early this morning. Patchy fog early this morning. Some thunderstorms may produce heavy rainfall early this morning. Highs around 80. Southeast winds around 5 mph, becoming northwest this afternoon. Chance of rain 50 percent.

Night: Mostly cloudy. A slight chance of showers after midnight. Humid with lows in the mid 60s. Northeast winds 5 to 10 mph. Chance of rain 20 percent.

Lacon, IL

Today
Rain Showers
85°/ 65° 29°/ 18°
30%
Friday
Rain Showers
80°/ 68° 27°/ 20°
40%
Saturday
Rain Showers
88°/ 68° 31°/ 20°
70%
Sun Night
Thunderstorms
58°14°
60%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy. Isolated showers late this morning. Patchy fog late this morning. Highs in the mid 80s. South winds around 5 mph, becoming northwest this afternoon. Chance of rain 20 percent.

Night: Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 60s. Northeast winds around 5 mph. Chance of rain 30 percent.

Eureka, IL

Today
Rain Showers
85°/ 65° 29°/ 18°
30%
Friday
Rain Showers
82°/ 68° 28°/ 20°
40%
Saturday
Mostly Cloudy
88°/ 68° 31°/ 20°
70%
Sun Night-Mon
Thunderstorms
60°16°
60%
Mon Night-Tue
Mostly Cloudy
55°13°
0%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy with isolated showers late this morning, then partly sunny this afternoon. Highs in the mid 80s. East winds around 5 mph, becoming northwest this afternoon. Chance of rain 20 percent.

Night: Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Humid with lows in the mid 60s. Northeast winds around 5 mph. Chance of rain 30 percent.

Aledo, IL

Today
Thunderstorms
82°/ 65° 28°/ 18°
50%
Friday
Rain Showers
80°/ 68° 27°/ 20°
50%
Saturday
Rain Showers
85°/ 65° 29°/ 18°
70%
Sun Night
Thunderstorms
58°14°
60%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy. A chance of showers with a slight chance of thunderstorms early this morning. Patchy fog early this morning. Some thunderstorms may produce heavy rainfall early this morning. Highs in the lower 80s. Southeast winds around 5 mph, becoming northwest this afternoon. Chance of rain 50 percent.

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

Princeton, IL

Today
Thunderstorms
80°/ 65° 27°/ 18°
50%
Friday
Rain Showers
78°/ 65° 26°/ 18°
50%
Saturday
Rain Showers
85°/ 65° 29°/ 18°
70%
Sun Night
Thunderstorms
58°14°
50%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy. A chance of showers with a slight chance of thunderstorms early this morning. Patchy fog early this morning. Some thunderstorms may produce heavy rainfall early this morning. Highs around 80. Southeast winds around 5 mph, becoming northwest this afternoon. Chance of rain 50 percent.

Night: Mostly cloudy. A slight chance of showers after midnight. Humid with lows in the mid 60s. Northeast winds 5 to 10 mph. Chance of rain 20 percent.

Oquawka, IL

Today
Thunderstorms
82°/ 68° 28°/ 20°
20%
Friday
Rain Showers
82°/ 70° 28°/ 21°
50%
Saturday
Mostly Cloudy
85°/ 68° 29°/ 20°
70%
Sunday
Thunderstorms
75°/ 60° 24°/ 16°
70%
Monday
Rain Showers
68°/ 58° 20°/ 14°
70%
Tuesday
Mostly Cloudy
68°/ 55° 20°/ 13°
0%

Day: Mostly cloudy early this morning, then becoming partly sunny. A slight chance of showers and thunderstorms early this morning. Patchy fog early this morning. Some thunderstorms may produce heavy rainfall early this morning. Highs in the lower 80s. East winds around 5 mph, becoming west this afternoon. Chance of rain 20 percent.

Night: Mostly cloudy. Humid with lows in the upper 60s. Northeast winds around 5 mph.

Rushville, IL

Today
Sunny
90°/ 68° 32°/ 20°
20%
Friday
Thunderstorms
88°/ 70° 31°/ 21°
40%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
70%
Sunday
Thunderstorms
80°/ 62° 27°/ 17°
70%
Monday
Rain Showers
72°/ 58° 22°/ 14°
70%
Tuesday
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Wednesday
Sunny
75°24°
0%

Day: Mostly sunny. Highs around 90. North winds around 5 mph, becoming west this afternoon. Heat index values up to 102 this afternoon.

Night: Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Northeast winds around 5 mph. Chance of rain 20 percent.

Hennepin, IL

Today
Thunderstorms
82°/ 65° 28°/ 18°
50%
Friday
Rain Showers
78°/ 68° 26°/ 20°
50%
Saturday
Rain Showers
88°/ 68° 31°/ 20°
70%
Sun Night
Thunderstorms
58°14°
60%
Monday
Rain Showers
68°/ 55° 20°/ 13°
60%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy. A chance of showers with a slight chance of thunderstorms early this morning. Patchy fog early this morning. Some thunderstorms may produce heavy rainfall early this morning. Highs in the lower 80s. Southeast winds around 5 mph, becoming northwest this afternoon. Chance of rain 50 percent.

Night: Mostly cloudy. A slight chance of showers after midnight. Humid with lows in the mid 60s. Northeast winds 5 to 10 mph. Chance of rain 20 percent.

Lincoln, IL

Today
Partly Cloudy
92°/ 68° 33°/ 20°
30%
Friday
Thunderstorms
88°/ 68° 31°/ 20°
30%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
50%
Sunday
Rain Showers
82°/ 62° 28°/ 17°
50%
Monday
Thunderstorms
75°/ 58° 24°/ 14°
60%
Tuesday
Cloudy
75°24°
0%
Wednesday
Cloudy
75°24°
0%

Day: Partly sunny. Highs in the lower 90s. Northeast winds 5 to 10 mph, becoming southwest this afternoon. Heat index values up to 101.

Night: Partly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Northeast winds 5 to 10 mph. Chance of rain 30 percent.

Petersburg, IL

Today
Partly Cloudy
92°/ 68° 33°/ 20°
30%
Friday
Thunderstorms
88°/ 70° 31°/ 21°
30%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
50%
Sunday
Rain Showers
85°/ 62° 29°/ 17°
50%
Monday
Rain Showers
75°/ 58° 24°/ 14°
60%
Tuesday
Sunny
75°/ 55° 24°/ 13°
0%
Wednesday
Sunny
78°26°
0%

Day: Partly sunny. Highs in the lower 90s. North winds around 5 mph, becoming southwest this afternoon. Heat index values up to 100.

Night: Mostly clear in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Northeast winds around 5 mph. Chance of rain 30 percent.

Moline, IL

Today
Thunderstorms
78°/ 65° 26°/ 18°
40%
Friday
Rain Showers
78°/ 68° 26°/ 20°
50%
Saturday
Rain Showers
85°/ 65° 29°/ 18°
70%
Sun-Sun Night
Thunderstorms
72°22°
60%
Monday
Rain Showers
65°/ 55° 18°/ 13°
60%
Tue Night-Wed
Cloudy
55°13°
0%

Day: Mostly cloudy. A chance of showers with a slight chance of thunderstorms early this morning. Patchy fog early this morning. Some thunderstorms may produce heavy rainfall early this morning. Highs in the upper 70s. Southeast winds around 5 mph, becoming north this afternoon. Chance of rain 40 percent.

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

Carthage, IL

Today
Partly Cloudy
85°/ 68° 29°/ 20°
0%
Friday
Rain Showers
85°/ 72° 29°/ 22°
40%
Saturday
Partly Cloudy
88°/ 68° 31°/ 20°
70%
Sunday
Thunderstorms
78°/ 62° 26°/ 17°
70%
Monday
Rain Showers
70°/ 58° 21°/ 14°
70%
Tuesday
Mostly Cloudy
70°/ 55° 21°/ 13°
0%

Day: Partly sunny. Highs in the mid 80s. East winds around 5 mph, becoming west this afternoon.

Night: Partly cloudy in the evening, then becoming mostly cloudy. Humid with lows in the upper 60s. Northeast winds around 5 mph.

Names listed above may include county names.

Trending Headlines

Trending Entertainment Headlines

Tri-County Radar Loop

Use the map search tool if you want to place a location marker on the radar map...

Tri-County Quick Facts

National Two Day Weather Forecast


E-mail the Tri-County Weather Forecast

Voice your opinion or tell us about page issues...