Mcmann Lake, IL Weather Forecast & Current Conditions

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Mcmann Lake, IL Weather Maps

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Mcmann Lake Weather Map
UTC Time: 9/16/2026, 18:10
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Mcmann Lake, IL Regional Weather

Expires:202609161900;;556218
ASUS43 KLOT 161808
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 PM CDT WED SEP 16 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>061-161900-
CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        PTSUNNY   77  73  87 NE3       30.29S TC  25           
BLOOMINGTON    PTSUNNY   80  73  79 SW7       30.30S HX  84  TC  27   
DECATUR        PTSUNNY   85  73  67 NW5       30.27S HX  91  TC  29   
PEORIA         PTSUNNY   78  72  81 SE5       30.28S HX  80  TC  26   
6HR MIN TEMP:  69; 6HR MAX TEMP:  78; 6HR PCP: TRACE;                

LACON*         LGT RAIN  72  69  90 E5        30.28F TC  22           
LINCOLN*       PTSUNNY   84  74  72 CALM      30.27F HX  90  TC  29   
SPRINGFIELD    PTSUNNY   83  73  72 CALM      30.27S HX  89  TC  28   
6HR MIN TEMP:  71; 6HR MAX TEMP:  83; 6HR PCP:  0.01;                

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

Mcmann Lake, IL

Afternoon
Thunderstorms
88°/ 70° 31°/ 21°
40%
Thursday
Thunderstorms
88°/ 68° 31°/ 20°
30%
Friday
Rain Showers
88°/ 70° 31°/ 21°
40%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
70%
Sunday
Rain Showers
85°29°
50%
Sun Night-Mon
Rain Showers
65°18°
40%
Mon Night-Tue
Cloudy
60°16°
0%

Day: Mostly cloudy early, then becoming partly sunny. A slight chance of thunderstorms. A chance of showers early, then a slight chance of showers. Not as warm with highs in the upper 80s. East winds around 5 mph, becoming northeast. Chance of rain 40 percent.

Night: Partly cloudy. Humid with lows around 70. Northeast winds around 5 mph, becoming southeast after midnight.

Lincoln, IL

Afternoon
Thunderstorms
88°/ 70° 31°/ 21°
40%
Thursday
Thunderstorms
88°/ 68° 31°/ 20°
20%
Friday
Rain Showers
88°/ 68° 31°/ 20°
40%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
70%
Sunday
Thunderstorms
82°/ 65° 28°/ 18°
50%
Monday
Rain Showers
78°/ 62° 26°/ 17°
40%

Day: Mostly cloudy with a slight chance of thunderstorms. A chance of showers early, then a slight chance of showers. Highs in the upper 80s. Southeast winds around 5 mph, becoming northeast. Chance of rain 40 percent.

Night: Partly cloudy. Humid with lows around 70. Northeast winds around 5 mph, becoming southeast after midnight.

Springfield, IL

Afternoon
Thunderstorms
90°/ 72° 32°/ 22°
30%
Thursday
Sunny
92°/ 68° 33°/ 20°
0%
Friday
Sunny
92°/ 72° 33°/ 22°
0%
Saturday
Partly Cloudy
95°/ 68° 35°/ 20°
70%
Sunday
Rain Showers
85°29°
50%
Sun Night-Mon
Rain Showers
65°18°
40%
Mon Night-Tue
Cloudy
62°17°
0%

Day: Partly sunny. A chance of showers with a slight chance of thunderstorms early, then a slight chance of showers. Highs around 90. Southeast winds around 5 mph, becoming north. Chance of rain 30 percent. Heat index values up to 101.

Night: Partly cloudy. Humid with lows in the lower 70s. Northeast winds around 5 mph, becoming southeast after midnight.

Havana, IL

Afternoon
Thunderstorms
85°/ 68° 29°/ 20°
40%
Thursday
Thunderstorms
88°/ 68° 31°/ 20°
30%
Friday
Rain Showers
88°/ 68° 31°/ 20°
40%
Saturday
Partly Cloudy
90°/ 68° 32°/ 20°
70%
Sun-Sun Night
Thunderstorms
82°28°
50%
Monday
Rain Showers
78°/ 60° 26°/ 16°
50%

Day: Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Not as warm with highs in the mid 80s. East winds around 5 mph, becoming northeast around 5 mph. Chance of rain 40 percent.

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

Pekin, IL

Afternoon
Thunderstorms
82°/ 68° 28°/ 20°
40%
Thursday
Thunderstorms
85°/ 68° 29°/ 20°
50%
Friday
Rain Showers
85°/ 68° 29°/ 20°
40%
Saturday
Rain Showers
88°/ 68° 31°/ 20°
70%
Sun-Sun Night
Thunderstorms
80°27°
50%
Monday
Rain Showers
78°/ 60° 26°/ 16°
50%

Day: Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Not as warm with highs in the lower 80s. East winds around 5 mph. Chance of rain 40 percent.

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

Beardstown, IL

Afternoon
Thunderstorms
88°/ 70° 31°/ 21°
40%
Thursday
Rain Showers
88°/ 68° 31°/ 20°
20%
Friday
Rain Showers
88°/ 70° 31°/ 21°
40%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
70%
Sunday
Rain Showers
82°28°
50%
Sun Night-Mon
Rain Showers
65°18°
40%
Mon Night-Tue
Cloudy
60°16°
0%

Day: Mostly cloudy early, then becoming partly sunny. A slight chance of thunderstorms early. A chance of showers. Not as warm with highs in the upper 80s. East winds around 5 mph, becoming northeast. Chance of rain 40 percent.

Night: Partly cloudy. Humid with lows around 70. Northeast winds around 5 mph, becoming southeast after midnight.

Taylorville, IL

Afternoon
Thunderstorms
92°/ 72° 33°/ 22°
20%
Thursday
Sunny
92°/ 68° 33°/ 20°
0%
Friday
Sunny
92°/ 70° 33°/ 21°
0%
Sat Night
Thunderstorms
68°20°
60%
Sunday
Rain Showers
88°31°
50%
Sun Night-Mon
Rain Showers
65°18°
40%
Mon Night
Rain Showers
62°17°
30%
Tuesday
Sunny
80°27°
0%

Day: Partly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Southeast winds around 5 mph, becoming west. Chance of rain 20 percent. Heat index values up to 102.

Night: Partly cloudy. Humid with lows in the lower 70s. Northeast winds around 5 mph, becoming southeast after midnight.

Clinton, IL

Afternoon
Thunderstorms
85°/ 70° 29°/ 21°
30%
Thursday
Thunderstorms
88°/ 68° 31°/ 20°
40%
Friday
Rain Showers
85°/ 68° 29°/ 20°
30%
Saturday
Partly Cloudy
90°/ 68° 32°/ 20°
70%
Sunday
Rain Showers
82°28°
50%
Sun Night-Mon
Rain Showers
65°18°
40%
Mon Night-Tue
Cloudy
60°16°
0%

Day: Mostly cloudy. A chance of showers early, then a slight chance of showers and thunderstorms. Not as warm with highs in the mid 80s. Southeast winds around 5 mph. Chance of rain 30 percent.

Night: Partly cloudy. Humid with lows around 70. Northeast winds around 5 mph, becoming southeast after midnight.

Decatur, IL

Afternoon
Thunderstorms
88°/ 72° 31°/ 22°
30%
Thursday
Rain Showers
90°/ 68° 32°/ 20°
20%
Friday
Sunny
88°/ 68° 31°/ 20°
0%
Sat Night
Thunderstorms
68°20°
70%
Sunday
Rain Showers
85°29°
50%
Sun Night-Mon
Rain Showers
65°18°
40%
Mon Night
Rain Showers
62°17°
30%
Tuesday
Sunny
78°26°
0%

Day: Partly sunny with a slight chance of thunderstorms. A chance of showers early, then a slight chance of showers. Highs in the upper 80s. Southeast winds around 5 mph, becoming southwest. Chance of rain 30 percent.

Night: Partly cloudy. Humid with lows in the lower 70s. Northeast winds around 5 mph, becoming southeast after midnight.

Jacksonville, IL

Afternoon
Rain Showers
88°/ 70° 31°/ 21°
30%
Thursday
Sunny
92°/ 68° 33°/ 20°
0%
Friday
Sunny
90°/ 70° 32°/ 21°
0%
Saturday
Partly Cloudy
92°/ 68° 33°/ 20°
60%
Sunday
Rain Showers
85°29°
50%
Sun Night-Mon
Rain Showers
65°18°
40%
Mon Night-Tue
Cloudy
60°16°
0%

Day: Mostly cloudy early, then becoming partly sunny. A chance of showers early, then a slight chance of showers. Highs in the upper 80s. East winds around 5 mph, becoming northeast. Chance of rain 30 percent.

Night: Partly cloudy. Humid with lows around 70. Northeast winds around 5 mph, becoming southeast after midnight.

Canton, IL

Afternoon
Thunderstorms
82°/ 68° 28°/ 20°
50%
Thursday
Thunderstorms
85°/ 68° 29°/ 20°
50%
Friday
Rain Showers
85°/ 68° 29°/ 20°
40%
Saturday
Rain Showers
88°/ 65° 31°/ 18°
70%
Sunday
Rain Showers
78°/ 62° 26°/ 17°
50%
Monday
Rain Showers
75°/ 58° 24°/ 14°
50%
Tuesday
Rain Showers
75°24°
30%

Day: Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Not as warm with highs in the lower 80s. East winds around 5 mph. Chance of rain 50 percent.

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

Bloomington, IL

Afternoon
Thunderstorms
82°/ 68° 28°/ 20°
40%
Thursday
Thunderstorms
85°/ 65° 29°/ 18°
50%
Friday
Rain Showers
85°/ 68° 29°/ 20°
40%
Saturday
Rain Showers
88°/ 68° 31°/ 20°
70%
Sunday
Rain Showers
80°/ 62° 27°/ 17°
50%
Monday
Rain Showers
78°/ 60° 26°/ 16°
50%
Tuesday
Rain Showers
75°24°
30%

Day: Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Not as warm with highs in the lower 80s. East winds around 5 mph. Chance of rain 40 percent.

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

Rushville, IL

Afternoon
Thunderstorms
85°/ 68° 29°/ 20°
40%
Thursday
Thunderstorms
88°/ 68° 31°/ 20°
30%
Friday
Rain Showers
88°/ 70° 31°/ 21°
40%
Saturday
Partly Cloudy
88°/ 68° 31°/ 20°
70%
Sunday
Rain Showers
80°/ 62° 27°/ 17°
70%
Monday
Rain Showers
75°/ 60° 24°/ 16°
50%
Tuesday
Rain Showers
75°24°
30%

Day: Mostly cloudy with a chance of showers. A slight chance of thunderstorms. Highs in the mid 80s. East winds around 5 mph. Chance of rain 40 percent.

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

Peoria, IL

Afternoon
Thunderstorms
78°/ 68° 26°/ 20°
50%
Thursday
Thunderstorms
82°/ 65° 28°/ 18°
70%
Friday
Rain Showers
85°/ 68° 29°/ 20°
40%
Saturday
Rain Showers
88°/ 68° 31°/ 20°
70%
Sun-Sun Night
Thunderstorms
78°26°
50%
Monday
Rain Showers
75°/ 60° 24°/ 16°
50%
Tuesday
Sunny
75°24°
0%

Day: Cloudy with a slight chance of thunderstorms. A chance of showers. Cooler with highs in the upper 70s. Northeast winds around 5 mph. Chance of rain 50 percent.

Night: Partly cloudy in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. East winds around 5 mph. Chance of rain 50 percent.

Greene, IL

Afternoon
Rain Showers
92°/ 72° 33°/ 22°
20%
Thursday
Sunny
95°/ 70° 35°/ 21°
0%
Friday
Thunderstorms
92°/ 72° 33°/ 22°
20%
Saturday
Sunny
95°/ 68° 35°/ 20°
50%
Sunday
Thunderstorms
88°31°
50%
Sun Night-Mon
Thunderstorms
65°18°
40%
Mon Night
Rain Showers
62°17°
30%
Tuesday
Rain Showers
80°27°
20%

Day: Partly sunny. A slight chance of showers early. Highs in the lower 90s. East winds around 5 mph, becoming west. Chance of rain 20 percent. Heat index values up to 101.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the lower 70s. Southeast winds around 5 mph. Chance of rain 20 percent.

Eureka, IL

Afternoon
Thunderstorms
80°/ 68° 27°/ 20°
50%
Thursday
Thunderstorms
85°/ 65° 29°/ 18°
70%
Friday
Rain Showers
82°/ 68° 28°/ 20°
40%
Saturday
Rain Showers
88°/ 65° 31°/ 18°
70%
Sun-Sun Night
Thunderstorms
78°26°
50%
Monday
Rain Showers
75°/ 60° 24°/ 16°
50%
Tuesday
Rain Showers
75°24°
30%

Day: Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Not as warm with highs around 80. East winds around 5 mph. Chance of rain 40 percent.

Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. East winds around 5 mph. Chance of rain 50 percent.

Montgomery, IL

Afternoon
Thunderstorms
92°/ 72° 33°/ 22°
40%
Thursday
Sunny
95°/ 70° 35°/ 21°
20%
Friday
Thunderstorms
92°/ 70° 33°/ 21°
20%
Saturday
Sunny
95°/ 70° 35°/ 21°
50%
Sunday
Thunderstorms
90°/ 65° 32°/ 18°
50%
Monday
Thunderstorms
85°/ 62° 29°/ 17°
30%
Tuesday
Rain Showers
82°28°
20%

Day: Partly sunny. A slight chance of showers early, then a chance of showers and thunderstorms. Highs in the lower 90s. South winds around 5 mph, becoming west. Chance of rain 40 percent. Heat index values up to 102.

Night: Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 70s. East winds around 5 mph, becoming south after midnight. Chance of rain 30 percent.

Shelbyville, IL

Afternoon
Thunderstorms
92°/ 72° 33°/ 22°
20%
Thursday
Sunny
95°/ 68° 35°/ 20°
0%
Friday
Sunny
90°/ 68° 32°/ 20°
0%
Sat Night
Thunderstorms
68°20°
50%
Sunday
Rain Showers
88°/ 65° 31°/ 18°
50%
Monday
Partly Cloudy
85°/ 62° 29°/ 17°
30%
Tuesday
Sunny
80°27°
0%

Day: Partly sunny with a slight chance of showers. A slight chance of thunderstorms. Highs in the lower 90s. South winds around 5 mph, becoming southwest. Chance of rain 20 percent. Heat index values up to 101.

Night: Partly cloudy. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. Northeast winds around 5 mph, becoming south after midnight. Chance of rain 20 percent.

Monticello, IL

Afternoon
Thunderstorms
88°/ 70° 31°/ 21°
30%
Thursday
Thunderstorms
88°/ 68° 31°/ 20°
20%
Friday
Sunny
85°/ 68° 29°/ 20°
0%
Sat Night
Thunderstorms
68°20°
70%
Sunday
Rain Showers
85°29°
50%
Sun Night-Mon
Rain Showers
65°18°
40%
Mon Night-Tue
Cloudy
60°16°
0%

Day: Mostly cloudy with a chance of showers early, then partly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Southeast winds around 5 mph, becoming west. Chance of rain 30 percent.

Night: Partly cloudy. Humid with lows around 70. Northeast winds around 5 mph, becoming southeast after midnight.

Sullivan, IL

Afternoon
Thunderstorms
92°/ 72° 33°/ 22°
20%
Thursday
Sunny
92°/ 68° 33°/ 20°
30%
Friday
Sunny
88°/ 68° 31°/ 20°
0%
Sat Night
Thunderstorms
68°20°
60%
Sunday
Rain Showers
88°/ 65° 31°/ 18°
50%
Monday
Rain Showers
82°/ 62° 28°/ 17°
40%
Tuesday
Sunny
78°26°
0%

Day: A slight chance of thunderstorms early. Partly sunny with a slight chance of showers. Highs in the lower 90s. Southeast winds around 5 mph, becoming southwest. Chance of rain 20 percent.

Night: Partly cloudy. Humid with lows in the lower 70s. Northeast winds around 5 mph, becoming southeast after midnight.

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