Mercer, IL Weather Forecast & Current Conditions

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Mercer Weather Map
UTC Time: 9/26/2026, 21:35
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Mercer, IL Regional Weather

Expires:202609262200;;105324
ASUS43 KLOT 262112
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 PM CDT SAT SEP 26 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.


ILZ001-002-007-009-015-016-024-262200-
NORTHWEST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLOUDY    68  54  60 SW5       30.11F TC  20           
STERLING*      PTSUNNY   74  45  35 SE3       30.13F TC  23           
SAVANNA*       PTSUNNY   71  52  51 SW5       30.13F 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

Mercer, IL

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
20%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
75°/ 65° 24°/ 18°
70%
Wednesday
Rain Showers
72°/ 65° 22°/ 18°
70%
Thu Night-Fri
Rain Showers
58°14°
50%

Day: Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. A slight chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 20 percent.

Moline, IL

Afternoon
Rain Showers
68°/ 58° 20°/ 14°
20%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Mostly Cloudy
75°/ 65° 24°/ 18°
70%
Wednesday
Rain Showers
72°/ 65° 22°/ 18°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°20°
40%

Day: Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the upper 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. A slight chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 20 percent.

Monmouth, IL

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
20%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Mostly Cloudy
75°/ 62° 24°/ 17°
70%
Wednesday
Rain Showers
72°/ 65° 22°/ 18°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°20°
50%

Day: Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. A slight chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 20 percent.

Wapello, IA

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
50%
Sunday
Rain Showers
72°/ 58° 22°/ 14°
30%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
75°/ 65° 24°/ 18°
80%
Wednesday
Rain Showers
72°/ 65° 22°/ 18°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°20°
40%

Day: Mostly cloudy with a 50 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds 5 to 10 mph.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 40 percent.

Davenport, IA

Afternoon
Rain Showers
68°/ 58° 20°/ 14°
20%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Wednesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
68°20°
40%

Day: Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the upper 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. A slight chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 20 percent.

Muscatine, IA

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
50%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
72°/ 62° 22°/ 17°
80%
Wednesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°20°
40%

Day: Mostly cloudy with a 50 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 40 percent.

Oquawka, IL

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
30%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Mostly Cloudy
75°/ 65° 24°/ 18°
70%
Wednesday
Rain Showers
65°18°
70%
Thursday
Rain Showers
65°/ 58° 18°/ 14°
70%
Friday
Rain Showers
68°20°
50%

Day: Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 30 percent.

Geneseo, IL

Afternoon
Partly Cloudy
68°/ 55° 20°/ 13°
0%
Sunday
Sunny
72°/ 55° 22°/ 13°
0%
Monday
Sunny
72°/ 55° 22°/ 13°
0%
Tuesday
Mostly Cloudy
75°/ 62° 24°/ 17°
70%
Wednesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Thu Night-Fri
Rain Showers
58°14°
50%

Day: Partly sunny. Near steady temperature in the upper 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. Lows in the mid 50s. East winds around 5 mph.

Burlington, IA

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
40%
Sunday
Rain Showers
72°/ 58° 22°/ 14°
30%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
75°/ 65° 24°/ 18°
70%
Wednesday
Rain Showers
72°/ 65° 22°/ 18°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°20°
50%

Day: Mostly cloudy with a 40 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds 5 to 10 mph.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 40 percent.

Tipton, IA

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
50%
Sunday
Mostly Cloudy
70°/ 58° 21°/ 14°
0%
Monday
Partly Cloudy
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
72°/ 62° 22°/ 17°
80%
Wednesday
Rain Showers
70°/ 62° 21°/ 17°
70%
Thursday
Rain Showers
70°/ 55° 21°/ 13°
70%
Friday
Rain Showers
68°20°
40%

Day: Mostly cloudy with a 50 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds around 5 mph.

Night: Mostly cloudy with a 20 percent chance of showers. Lows in the upper 50s. East winds around 5 mph.

Mount Pleasant, IA

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
50%
Sunday
Rain Showers
72°/ 58° 22°/ 14°
30%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
75°/ 65° 24°/ 18°
80%
Wednesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°20°
50%

Day: Mostly cloudy with a 50 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds 5 to 10 mph.

Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Southeast winds around 5 mph. Chance of rain 40 percent.

Iowa City, IA

Afternoon
Rain Showers
62°/ 58° 17°/ 14°
70%
Sunday
Rain Showers
68°/ 58° 20°/ 14°
30%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
72°/ 62° 22°/ 17°
80%
Wednesday
Rain Showers
70°/ 62° 21°/ 17°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°20°
40%

Day: Showers likely. Near steady temperature in the lower 60s. Southeast winds 5 to 10 mph. Chance of rain 70 percent.

Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 40 percent.

Washington, IA

Afternoon
Rain Showers
62°/ 58° 17°/ 14°
50%
Sunday
Rain Showers
70°/ 58° 21°/ 14°
40%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
72°/ 65° 22°/ 18°
80%
Wednesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°20°
40%

Day: Mostly cloudy with a 50 percent chance of showers. Near steady temperature in the lower 60s. Southeast winds around 10 mph.

Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 50 percent.

Macomb, IL

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
20%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Mostly Cloudy
75°/ 65° 24°/ 18°
70%
Wednesday
Rain Showers
72°/ 65° 22°/ 18°
70%
Thu Night
Rain Showers
60°16°
50%
Friday
Rain Showers
68°20°
50%

Day: Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. A slight chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent.

Fort Madison, IA

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
40%
Sunday
Rain Showers
72°/ 58° 22°/ 14°
30%
Monday
Sunny
75°/ 58° 24°/ 14°
0%
Tuesday
Rain Showers
75°/ 65° 24°/ 18°
70%
Wednesday
Rain Showers
72°/ 65° 22°/ 18°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
70°21°
50%

Day: Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds 5 to 10 mph.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 40 percent.

Clinton, IA

Afternoon
Mostly Cloudy
68°/ 55° 20°/ 13°
20%
Sunday
Partly Cloudy
70°/ 55° 21°/ 13°
0%
Monday
Sunny
72°/ 55° 22°/ 13°
0%
Tuesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Wednesday
Rain Showers
70°/ 62° 21°/ 17°
70%
Thursday
Rain Showers
70°/ 55° 21°/ 13°
70%
Friday
Rain Showers
68°20°
40%

Day: Mostly cloudy. Near steady temperature in the upper 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. A slight chance of showers after midnight. Lows in the mid 50s. East winds around 5 mph. Chance of rain 20 percent.

Carthage, IL

Afternoon
Rain Showers
65°/ 58° 18°/ 14°
40%
Sunday
Partly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Sunny
75°/ 58° 24°/ 14°
0%
Tuesday
Rain Showers
78°/ 65° 26°/ 18°
70%
Wednesday
Rain Showers
75°/ 65° 24°/ 18°
70%
Thu Night
Thunderstorms
60°16°
50%
Friday
Rain Showers
70°21°
50%

Day: Mostly cloudy with a 30 percent chance of showers. Near steady temperature in the mid 60s. Southeast winds 5 to 10 mph.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 40 percent.

Sterling, IL

Afternoon
Partly Cloudy
68°/ 55° 20°/ 13°
0%
Sunday
Sunny
72°/ 52° 22°/ 11°
0%
Monday
Sunny
72°/ 55° 22°/ 13°
0%
Tuesday
Partly Cloudy
75°/ 62° 24°/ 17°
70%
Wednesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%
Friday
Rain Showers
68°20°
40%

Day: Partly sunny. Near steady temperature in the upper 60s. Southeast winds around 5 mph.

Night: Mostly cloudy. Lows in the mid 50s. East winds around 5 mph.

Princeton, IL

Afternoon
Partly Cloudy
68°/ 52° 20°/ 11°
0%
Sunday
Sunny
72°/ 52° 22°/ 11°
0%
Monday
Sunny
72°/ 55° 22°/ 13°
0%
Tuesday
Sunny
75°/ 62° 24°/ 17°
70%
Wednesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Thursday
Rain Showers
72°/ 58° 22°/ 14°
70%

Day: Partly sunny. Near steady temperature in the upper 60s. Southeast winds around 5 mph.

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

Fairfield, IA

Afternoon
Rain Showers
62°/ 58° 17°/ 14°
50%
Sunday
Rain Showers
72°/ 58° 22°/ 14°
40%
Monday
Sunny
72°/ 58° 22°/ 14°
0%
Tuesday
Rain Showers
72°/ 65° 22°/ 18°
80%
Wednesday
Rain Showers
72°/ 62° 22°/ 17°
70%
Thu Night
Rain Showers
58°14°
50%
Friday
Rain Showers
68°20°
40%

Day: Mostly cloudy with a 40 percent chance of showers. Near steady temperature in the lower 60s. Southeast winds 5 to 10 mph.

Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 50 percent.

Names listed above may include county names.

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