Alpha Park, IL Weather Forecast & Current Conditions

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Alpha Park Weather Map
UTC Time: 9/20/2026, 16:05
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Alpha Park, IL Regional Weather

Expires:202609201700;;770363
ASUS43 KLOT 201601
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 AM CDT SUN SEP 20 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.


ILZ028>032-037-038-041>044-048-051>054-059>061-201700-
CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BLOOMINGTON    CLOUDY    71  71 100 NE5       29.97F TC  22           
DECATUR        PTSUNNY   82  68  62 NE9       29.95R HX  85  TC  28   
PEORIA         PTSUNNY   73  68  84 E7        29.95R TC  23           
LACON*         CLOUDY    70  67  91 CALM      29.95R TC  21           
LINCOLN*       CLOUDY    76  68  76 E6        29.95R TC  25           
SPRINGFIELD    CLOUDY    77  67  71 E3        29.94S TC  25           
TAYLORVILLE    NOT AVBL                                               
$$


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

Alpha Park, IL

Today
Thunderstorms
75°/ 60° 24°/ 16°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
52°11°
0%
Thursday
Cloudy
52°/ 52° 11°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Showers and thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Highs in the mid 70s. East winds around 5 mph, becoming northeast 10 to 15 mph with gusts up to 25 mph this afternoon. Chance of rain near 100 percent.

Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows around 60. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Pekin, IL

Today
Thunderstorms
78°/ 60° 26°/ 16°
90%
Monday
Rain Showers
68°/ 55° 20°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
52°11°
0%
Thursday
Cloudy
52°/ 52° 11°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: A chance of thunderstorms. Showers. Highs in the upper 70s. Northeast winds 5 to 10 mph. Chance of rain 90 percent.

Night: A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows around 60. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Eureka, IL

Today
Thunderstorms
75°/ 58° 24°/ 14°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Wednesday
Cloudy
50°10°
0%
Thursday
Cloudy
50°/ 52° 10°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Showers. Thunderstorms likely, mainly this morning. Highs in the mid 70s. Northeast winds around 5 mph, increasing to 10 to 15 mph with gusts up to 25 mph this afternoon. Chance of rain near 100 percent.

Night: Mostly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent.

Canton, IL

Today
Thunderstorms
78°/ 60° 26°/ 16°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
50%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
52°11°
0%
Thursday
Cloudy
52°/ 52° 11°/ 11°
0%
Fri Night
Cloudy
52°11°
0%
Saturday
Partly Cloudy
72°22°
0%

Day: A chance of thunderstorms. Showers, mainly this morning. Highs in the upper 70s. Northeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain near 100 percent.

Night: Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows around 60. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Havana, IL

Today
Thunderstorms
82°/ 62° 28°/ 17°
70%
Monday
Rain Showers
68°/ 55° 20°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
52°11°
0%
Thursday
Cloudy
52°/ 55° 11°/ 13°
0%
Fri Night
Cloudy
52°11°
0%
Saturday
Partly Cloudy
75°24°
0%

Day: A chance of thunderstorms. Showers likely, mainly this morning. Highs in the lower 80s. North winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 70 percent.

Night: Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 60s. Northeast winds 5 to 10 mph with gusts up to 25 mph. Chance of rain 50 percent.

Galesburg, IL

Today
Thunderstorms
75°/ 58° 24°/ 14°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
50%
Tuesday
Mostly Cloudy
62°/ 50° 17°/ 10°
0%
Wednesday
Cloudy
50°10°
0%
Thursday
Cloudy
50°/ 52° 10°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Showers and thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Highs in the mid 70s. Northeast winds 10 to 15 mph. Chance of rain near 100 percent.

Night: Cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Lacon, IL

Today
Thunderstorms
72°/ 58° 22°/ 14°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Wednesday
Cloudy
50°10°
0%
Thursday
Cloudy
50°/ 52° 10°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Showers. Thunderstorms, mainly this morning. Highs in the lower 70s. Northeast winds 10 to 15 mph. Chance of rain near 100 percent.

Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent.

Toulon, IL

Today
Thunderstorms
72°/ 58° 22°/ 14°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
50%
Tuesday
Mostly Cloudy
62°/ 50° 17°/ 10°
0%
Wednesday
Cloudy
50°10°
0%
Thursday
Cloudy
50°/ 52° 10°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Showers and thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Highs in the lower 70s. Northeast winds 10 to 15 mph. Chance of rain near 100 percent.

Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent.

Lincoln, IL

Today
Thunderstorms
82°/ 62° 28°/ 17°
70%
Monday
Rain Showers
68°/ 58° 20°/ 14°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
70°21°
0%
Thursday
Cloudy
70°/ 52° 21°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Mostly cloudy with a chance of thunderstorms. A chance of showers this morning, then showers likely this afternoon. Highs in the lower 80s. Northeast winds 5 to 10 mph, becoming north with gusts up to 20 mph this afternoon. Chance of rain 70 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 60s. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Bloomington, IL

Today
Thunderstorms
78°/ 58° 26°/ 14°
90%
Monday
Rain Showers
68°/ 55° 20°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Wednesday
Cloudy
68°20°
0%
Thursday
Cloudy
68°/ 52° 20°/ 11°
0%
Fri Night-Sat
Cloudy
50°10°
0%

Day: Showers with a chance of thunderstorms. Highs in the upper 70s. Temperature falling into the mid 70s this afternoon. Northeast winds 10 to 15 mph. Chance of rain 90 percent.

Night: A chance of thunderstorms in the evening. Cloudy with a chance of showers. Cooler with lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Petersburg, IL

Today
Thunderstorms
82°/ 62° 28°/ 17°
50%
Monday
Thunderstorms
70°/ 58° 21°/ 14°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
72°22°
0%
Thursday
Cloudy
72°/ 55° 22°/ 13°
0%
Fri Night
Cloudy
52°11°
0%
Saturday
Partly Cloudy
75°24°
0%

Day: Mostly cloudy with a chance of showers and thunderstorms. Highs in the lower 80s. North winds 5 to 10 mph. Chance of rain 50 percent.

Night: Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 60s. Northeast winds around 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

Princeton, IL

Today
Thunderstorms
68°/ 58° 20°/ 14°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
50%
Tuesday
Mostly Cloudy
62°/ 50° 17°/ 10°
0%
Wednesday
Cloudy
50°10°
0%
Thursday
Cloudy
50°/ 52° 10°/ 11°
0%
Fri Night-Sat
Cloudy
50°10°
0%

Day: Occasional thunderstorms. Occasional showers. Near steady temperature in the upper 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent.

Night: Mostly cloudy with a 20 percent chance of showers. Lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph.

Hennepin, IL

Today
Thunderstorms
70°/ 58° 21°/ 14°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
52°11°
0%
Thursday
Cloudy
52°/ 52° 11°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Occasional thunderstorms. Occasional showers. Near steady temperature around 70. Northeast winds 10 to 15 mph. Chance of rain near 100 percent.

Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Clinton, IL

Today
Thunderstorms
82°/ 60° 28°/ 16°
70%
Monday
Rain Showers
68°/ 55° 20°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wednesday
Cloudy
68°20°
0%
Thursday
Cloudy
68°/ 52° 20°/ 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Mostly cloudy with a chance of thunderstorms. A chance of showers this morning, then showers likely this afternoon. Highs in the lower 80s. Northeast winds 5 to 10 mph, becoming north 10 to 15 mph this afternoon. Chance of rain 70 percent.

Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Cooler with lows around 60. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Geneseo, IL

Today
Thunderstorms
68°/ 58° 20°/ 14°
90%
Monday
Rain Showers
65°/ 55° 18°/ 13°
50%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Cloudy
48°
0%
Thursday
Cloudy
48°/ 52° / 11°
0%
Fri Night-Sat
Cloudy
52°11°
0%

Day: Occasional showers and thunderstorms late this morning, then showers likely this afternoon. Near steady temperature in the upper 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.

Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Ottawa, IL

Today
Thunderstorms
68°/ 58° 20°/ 14°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
40%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Cloudy
70°/ 50° 21°/ 10°
0%
Saturday
Cloudy
72°22°
0%

Day: Patchy fog early in the morning. A slight chance of thunderstorms in the morning. Showers. A slight chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the morning. Near steady temperature in the upper 60s. Northeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Chance of precipitation near 100 percent.

Night: Cloudy. A slight chance of showers in the late evening and early morning. A chance of showers late. Lows in the upper 50s. Northeast winds 10 to 15 mph. Gusts up to 25 mph in the evening. Chance of precipitation 40 percent.

Macomb, IL

Today
Thunderstorms
75°/ 60° 24°/ 16°
70%
Monday
Rain Showers
65°/ 55° 18°/ 13°
40%
Tuesday
Mostly Cloudy
62°/ 50° 17°/ 10°
0%
Wed Night
Cloudy
50°10°
0%
Thursday
Mostly Cloudy
70°21°
0%
Friday
Mostly Cloudy
70°/ 52° 21°/ 11°
0%
Saturday
Partly Cloudy
72°22°
0%

Day: Mostly cloudy. Showers and thunderstorms likely late this morning, then a chance of showers this afternoon. Highs in the mid 70s. North winds 5 to 10 mph. Chance of rain 70 percent.

Night: Cloudy. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Humid with lows around 60. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Rushville, IL

Today
Thunderstorms
78°/ 62° 26°/ 17°
70%
Monday
Thunderstorms
68°/ 55° 20°/ 13°
40%
Tuesday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Wed Night
Cloudy
52°11°
0%
Thursday
Mostly Cloudy
72°22°
0%
Friday
Mostly Cloudy
72°/ 52° 22°/ 11°
0%
Saturday
Partly Cloudy
75°24°
0%

Day: Mostly cloudy with a chance of thunderstorms. Showers likely, mainly this morning. Cooler with highs in the upper 70s. North winds 5 to 10 mph. Chance of rain 70 percent.

Night: Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 60s. Northeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

Monmouth, IL

Today
Thunderstorms
72°/ 58° 22°/ 14°
90%
Monday
Rain Showers
65°/ 55° 18°/ 13°
50%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wed Night
Cloudy
48°
0%
Thursday
Mostly Cloudy
68°20°
0%
Friday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Saturday
Partly Cloudy
72°22°
0%

Day: Mostly cloudy. Occasional showers and thunderstorms late this morning, then a chance of showers this afternoon. Near steady temperature in the lower 70s. North winds around 5 mph, becoming northeast 10 to 15 mph this afternoon. Chance of rain 90 percent.

Night: Cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Pontiac, IL

Today
Thunderstorms
75°/ 58° 24°/ 14°
90%
Monday
Rain Showers
68°/ 55° 20°/ 13°
40%
Tuesday
Rain Showers
65°/ 52° 18°/ 11°
20%
Wednesday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Thursday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Friday
Mostly Cloudy
72°/ 50° 22°/ 10°
0%
Saturday
Mostly Cloudy
72°22°
0%

Day: Patchy fog early in the morning. Showers and a chance of thunderstorms. Highs in the mid 70s. Northeast winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Chance of precipitation 90 percent.

Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Northeast winds 10 to 15 mph. Chance of precipitation 40 percent.

Names listed above may include county names.

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