Flat Lake, IA Weather Forecast & Current Conditions

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Flat Lake Weather Map
UTC Time: 9/20/2026, 10:41
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Aeronautical Observation: Automated synoptic observations via NWS Gateway.
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Flat Lake, IA Regional Weather

Expires:202609201100;;759693
ASUS43 KDMX 201010
RWRIA 

WEATHER ROUNDUP FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
500 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 NWS STATIONS...THUS NOT UNDER NWS
QUALITY CONTROL.  THEY ALSO DO NOT REPORT WEATHER SUCH 
AS PRECIPITATION OR FOG.  


IAZ007>011-017>019-026>030-037>042-050>054-066-201100-
   NORTHEAST IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CEDAR RAPIDS     N/A    N/A N/A N/A MISG      29.85S                  
CHARLES CITY * CLOUDY    61  61 100 NE13      29.95S FOG     TC  16   
DECORAH *      CLOUDY    59  59 100 NE8G14    29.96S FOG     TC  15   
DUBUQUE        RAIN      63  63 100 N9        29.94R FOG     TC  17   
MONTICELLO *   LGT RAIN N/A N/A N/A NE7       29.88F                  
OELWEIN *      CLOUDY    63  63 100 NE15G22   29.92F TC  17           
WATERLOO       CLOUDY    63  62  97 NE17G26   29.89F TC  17           
$$
 

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

Flat Lake, IA

Today
Thunderstorms
65°/ 55° 18°/ 13°
90%
Monday
Rain Showers
62°/ 52° 17°/ 11°
50%
Tuesday
Partly Cloudy
62°/ 48° 17°/
0%
Wed Night
Clear
48°
0%
Thursday
Mostly Cloudy
65°18°
0%
Friday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Patchy fog early this morning. Occasional showers and thunderstorms early. Showers likely with a chance of thunderstorms this morning, then a chance of showers this afternoon. Locally heavy rainfall possible early. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the mid 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent.

Galena, IL

Today
Thunderstorms
65°/ 55° 18°/ 13°
100%
Monday
Rain Showers
62°/ 50° 17°/ 10°
50%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wed Night
Cloudy
48°
0%
Thursday
Mostly Cloudy
65°18°
0%
Friday
Mostly Cloudy
65°/ 48° 18°/
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Patchy fog early this morning. Occasional showers early. Occasional thunderstorms. Showers likely. Locally heavy rainfall possible early. Highs in the mid 60s. Northeast winds 10 to 15 mph. Chance of rain near 100 percent.

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

Mount Carroll, IL

Today
Thunderstorms
68°/ 55° 20°/ 13°
100%
Monday
Rain Showers
62°/ 52° 17°/ 11°
50%
Tuesday
Partly Cloudy
62°/ 48° 17°/
0%
Wed Night
Cloudy
48°
0%
Thursday
Sunny
65°/ 50° 18°/ 10°
0%
Fri Night
Cloudy
48°
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Patchy fog early this morning. Occasional showers early. Occasional thunderstorms. Showers likely. Locally heavy rainfall possible early. Highs 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 mid 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph.

Clinton, IA

Today
Thunderstorms
68°/ 58° 20°/ 14°
100%
Monday
Rain Showers
65°/ 52° 18°/ 11°
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
68°20°
0%

Day: Patchy fog early this morning. Occasional showers early. Occasional thunderstorms. Showers. Locally heavy rainfall possible early. Highs in the upper 60s. Northeast winds around 5 mph, increasing to 10 to 15 mph with gusts up to 25 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 30 percent.

Dubuque, IA

Today
Thunderstorms
65°/ 55° 18°/ 13°
90%
Monday
Rain Showers
62°/ 50° 17°/ 10°
50%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wed Night
Clear
48°
0%
Thursday
Mostly Cloudy
65°18°
0%
Friday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Cloudy. Patchy fog early this morning. Occasional showers and thunderstorms early. A chance of thunderstorms this morning. A chance of showers. Locally heavy rainfall possible early. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the mid 50s. Northeast winds 10 to 15 mph. Chance of rain 40 percent.

Freeport, IL

Today
Thunderstorms
65°/ 55° 18°/ 13°
100%
Monday
Rain Showers
62°/ 48° 17°/
40%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wed Night
Cloudy
48°
0%
Thursday
Mostly Cloudy
65°18°
0%
Friday
Mostly Cloudy
65°/ 48° 18°/
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Patchy fog early this morning. Occasional showers early. Occasional thunderstorms. Showers likely. Locally heavy rainfall possible early. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the mid 50s. Northeast winds around 15 mph with gusts up to 25 mph. Chance of rain 30 percent.

Sterling, IL

Today
Thunderstorms
68°/ 58° 20°/ 14°
100%
Monday
Rain Showers
65°/ 52° 18°/ 11°
50%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Cloudy
48°
0%
Thursday
Cloudy
48°/ 52° / 11°
0%
Fri Night
Cloudy
50°10°
0%
Saturday
Partly Cloudy
70°21°
0%

Day: Patchy fog early this morning. Occasional showers and thunderstorms early this morning, then a chance of showers this afternoon. Locally heavy rainfall possible early. Humid with highs in the upper 60s. Northeast winds around 5 mph, increasing to 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 around 15 mph with gusts up to 25 mph.

Anamosa, IA

Today
Thunderstorms
65°/ 55° 18°/ 13°
90%
Monday
Rain Showers
62°/ 52° 17°/ 11°
50%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wed-Wed Night
Clear
65°18°
0%
Thursday
Mostly Cloudy
65°18°
0%
Friday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Patchy fog early this morning. Occasional showers and thunderstorms early. Showers likely with a chance of thunderstorms this morning, then a chance of showers this afternoon. Locally heavy rainfall possible early. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.

Night: Cloudy. A chance of showers after midnight. Lows in the mid 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent.

Davenport, IA

Today
Thunderstorms
65°/ 58° 18°/ 14°
100%
Monday
Rain Showers
65°/ 52° 18°/ 11°
50%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wed Night
Clear
50°10°
0%
Thursday
Mostly Cloudy
68°20°
0%
Friday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Saturday
Partly Cloudy
70°21°
0%

Day: Patchy fog early this morning. Occasional showers early. Occasional thunderstorms. Showers. Locally heavy rainfall possible early. Humid. Near steady temperature in the mid 60s. Northeast winds around 5 mph, increasing to 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 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 with gusts up to 25 mph. Chance of rain 40 percent.

Tipton, IA

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

Day: Patchy fog early this morning. Occasional showers early. Occasional thunderstorms. Showers likely. Locally heavy rainfall possible early. Near steady temperature in the mid 60s. North winds around 5 mph, increasing to northeast 10 to 15 mph with gusts up to 25 mph. 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 with gusts up to 25 mph. Chance of rain 30 percent.

Moline, IL

Today
Thunderstorms
68°/ 58° 20°/ 14°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
50%
Tuesday
Mostly Cloudy
62°/ 50° 17°/ 10°
0%
Wed Night
Cloudy
50°10°
0%
Thursday
Mostly Cloudy
68°20°
0%
Friday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Saturday
Partly Cloudy
70°21°
0%

Day: Patchy fog early this morning. Occasional showers and thunderstorms early this morning, then a chance of showers this afternoon. Locally heavy rainfall possible early. Humid. Near steady temperature in the upper 60s. Northeast winds around 5 mph, increasing to 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 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 with gusts up to 25 mph. Chance of rain 40 percent.

Manchester, IA

Today
Thunderstorms
65°/ 52° 18°/ 11°
70%
Monday
Rain Showers
62°/ 48° 17°/
50%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
65°/ 48° 18°/
0%
Thursday
Mostly Cloudy
65°18°
0%
Friday
Mostly Cloudy
65°/ 50° 18°/ 10°
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Cloudy. Patchy fog early this morning. Showers and thunderstorms likely early. A chance of showers and thunderstorms this morning, then a slight chance of showers this afternoon. Locally heavy rainfall possible early. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.

Night: Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent.

Geneseo, IL

Today
Thunderstorms
72°/ 58° 22°/ 14°
100%
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: Patchy fog early this morning. Occasional showers early. Occasional thunderstorms early this morning. Showers. Locally heavy rainfall possible early. Humid with highs in the lower 70s. Northeast winds 10 to 15 mph with gusts up to 25 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.

Muscatine, IA

Today
Thunderstorms
68°/ 58° 20°/ 14°
90%
Monday
Rain Showers
62°/ 55° 17°/ 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
70°21°
0%

Day: Patchy fog early this morning. Occasional showers early. Occasional thunderstorms. Showers likely. Locally heavy rainfall possible early. Humid. 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: 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.

Cedar Rapids, IA

Today
Thunderstorms
65°/ 55° 18°/ 13°
70%
Monday
Rain Showers
62°/ 52° 17°/ 11°
50%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
65°/ 48° 18°/
0%
Thursday
Mostly Cloudy
65°18°
0%
Friday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Mostly cloudy. Patchy fog early this morning. Showers and thunderstorms likely early. A chance of showers and thunderstorms this morning, then a slight chance of showers this afternoon. Locally heavy rainfall possible early. Near steady temperature in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.

Night: Cloudy. A chance of showers after midnight. Lows in the mid 50s. Northeast winds around 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Princeton, 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
50°10°
0%

Day: Patchy fog early this morning. Occasional showers early. Occasional thunderstorms. Showers. Locally heavy rainfall possible early. Humid with highs in the lower 70s. 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.

Aledo, IL

Today
Thunderstorms
72°/ 58° 22°/ 14°
90%
Monday
Rain Showers
65°/ 55° 18°/ 13°
50%
Tuesday
Mostly Cloudy
62°/ 50° 17°/ 10°
0%
Wed Night
Cloudy
50°10°
0%
Thursday
Mostly Cloudy
68°20°
0%
Friday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%

Day: Patchy fog early this morning. Occasional showers and thunderstorms early. Showers with a slight chance of thunderstorms this morning, then a chance of showers this afternoon. Locally heavy rainfall possible early. Humid with highs in the lower 70s. Northeast winds 10 to 15 mph. 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 with gusts up to 25 mph. Chance of rain 40 percent.

Iowa City, IA

Today
Thunderstorms
65°/ 58° 18°/ 14°
90%
Monday
Rain Showers
60°/ 52° 16°/ 11°
50%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
65°/ 48° 18°/
0%
Thursday
Mostly Cloudy
65°18°
0%
Friday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Patchy fog early this morning. Occasional showers and thunderstorms early. Showers likely with a chance of thunderstorms this morning, then a chance of showers this afternoon. Locally heavy rainfall possible early. Not as warm and humid. Near steady temperature in the mid 60s. North winds around 5 mph, becoming northeast 10 to 15 mph with gusts up to 25 mph. 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 with gusts up to 25 mph. Chance of rain 40 percent.

Independence, IA

Today
Thunderstorms
65°/ 55° 18°/ 13°
50%
Monday
Rain Showers
62°/ 48° 17°/
50%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
65°/ 48° 18°/
0%
Thursday
Mostly Cloudy
65°18°
0%
Friday
Mostly Cloudy
65°/ 52° 18°/ 11°
0%
Saturday
Partly Cloudy
68°20°
0%

Day: Cloudy. Patchy fog early this morning. A chance of showers and thunderstorms early this morning, then a slight chance of showers this afternoon. Locally heavy rainfall possible early. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Night: Cloudy. A chance of showers after midnight. Lows in the mid 50s. Northeast winds around 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Wapello, IA

Today
Thunderstorms
68°/ 58° 20°/ 14°
100%
Monday
Rain Showers
65°/ 55° 18°/ 13°
50%
Tuesday
Mostly Cloudy
62°/ 50° 17°/ 10°
0%
Wed Night
Cloudy
50°10°
0%
Thursday
Mostly Cloudy
68°20°
0%
Friday
Mostly Cloudy
68°/ 52° 20°/ 11°
0%
Saturday
Partly Cloudy
72°22°
0%

Day: Patchy fog early this morning. Occasional showers and thunderstorms early. Showers likely with a slight chance of thunderstorms this morning, then a chance of showers this afternoon. Locally heavy rainfall possible early. Not as warm and humid. Near steady temperature in the upper 60s. North winds 5 to 10 mph, becoming northeast 10 to 15 mph this afternoon. Chance of rain near 100 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 40 percent.

Names listed above may include county names.

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