Ralston, IA Weather Forecast & Current Conditions

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Ralston, IA Weather Maps

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Ralston Weather Map
UTC Time: 9/18/2026, 19:52
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Ralston, IA Regional Weather

Expires:202609182000;;670837
ASUS43 KDMX 181910
RWRIA 

WEATHER ROUNDUP FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
200 PM CDT FRI SEP 18 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.  


IAZ001>003-012>014-020>022-031>034-043>046-182000-
   NORTHWEST IOWA
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARROLL *      CLOUDY    72  70  94 SE16G22   30.03F TC  22           
CHEROKEE *     CLOUDY    72  68  88 SE12      30.01F TC  22           
DENISON *      MOSUNNY   82  77  83 SE10G21   29.99F HX  91  TC  28   
LE MARS *      PTSUNNY  N/A N/A N/A SE10      29.96F                  
MAURICE *      CLOUDY    72  70  94 SE14      29.99F TC  22           
SHELDON *      CLOUDY    68  68 100 SE13      30.00F TC  20           
SIOUX CITY     SUNNY     87  73  62 S10       29.94F HX  94  TC  31   
SPENCER        CLOUDY    67  65  93 SE13      30.04F TC  19           
STORM LAKE *   CLOUDY    70  68  94 SE13G22   30.03F TC  21           
$$
 

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

Ralston, IA

Afternoon
Partly Cloudy
82°/ 68° 28°/ 20°
70%
Saturday
Thunderstorms
78°/ 58° 26°/ 14°
40%
Sunday
Rain Showers
65°/ 55° 18°/ 13°
50%
Monday
Thunderstorms
60°/ 48° 16°/
70%
Tuesday
Mostly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
65°/ 50° 18°/ 10°
20%
Thursday
Rain Showers
68°20°
20%

Day: Partly sunny. Highs in the lower 80s. Southeast winds 10 to 15 mph with gusts up to 25 mph.

Night: Mostly cloudy with a chance of thunderstorms. Showers likely, mainly in the evening. Humid with lows in the upper 60s. South winds 5 to 10 mph with gusts up to 20 mph, becoming southwest after midnight. Chance of rain 70 percent.

Jefferson, IA

Afternoon
Mostly Cloudy
82°/ 65° 28°/ 18°
70%
Saturday
Thunderstorms
78°/ 58° 26°/ 14°
40%
Sunday
Rain Showers
68°/ 52° 20°/ 11°
50%
Monday
Rain Showers
62°/ 48° 17°/
70%
Tuesday
Mostly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
65°/ 50° 18°/ 10°
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy. Highs in the lower 80s. Southeast winds 10 to 15 mph with gusts up to 25 mph.

Night: A chance of showers and thunderstorms in the evening, then showers and thunderstorms likely after midnight. Humid with lows in the mid 60s. Southeast winds 5 to 10 mph with gusts up to 20 mph, becoming south after midnight. Chance of rain 70 percent.

Guthrie Center, IA

Afternoon
Partly Cloudy
85°/ 68° 29°/ 20°
50%
Saturday
Thunderstorms
80°/ 62° 27°/ 17°
40%
Sunday
Thunderstorms
68°/ 55° 20°/ 13°
50%
Monday
Rain Showers
62°/ 50° 17°/ 10°
70%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
65°/ 50° 18°/ 10°
0%
Thursday
Rain Showers
68°20°
20%

Day: Partly sunny. Highs in the mid 80s. Southeast winds around 10 mph with gusts up to 25 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Humid with lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 50 percent.

Rockwell City, IA

Afternoon
Thunderstorms
80°/ 65° 27°/ 18°
70%
Saturday
Thunderstorms
75°/ 58° 24°/ 14°
40%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
50%
Monday
Thunderstorms
60°/ 48° 16°/
70%
Tuesday
Mostly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
65°/ 50° 18°/ 10°
20%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy with a slight chance of showers and thunderstorms. Highs around 80. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.

Night: A chance of thunderstorms. Showers likely. Humid with lows in the mid 60s. Southeast winds 5 to 10 mph with gusts up to 20 mph, becoming south after midnight. Chance of rain 70 percent.

Sac City, IA

Afternoon
Thunderstorms
82°/ 65° 28°/ 18°
60%
Saturday
Thunderstorms
75°/ 58° 24°/ 14°
40%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
50%
Monday
Thunderstorms
58°/ 48° 14°/
70%
Tuesday
Mostly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
65°/ 50° 18°/ 10°
20%
Thursday
Rain Showers
68°20°
30%

Day: Partly sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.

Night: Mostly cloudy with a chance of thunderstorms. Showers likely, mainly in the evening. Humid with lows in the mid 60s. Southeast winds 5 to 10 mph with gusts up to 20 mph, becoming southwest after midnight. Chance of rain 60 percent.

Audubon, IA

Afternoon
Sunny
85°/ 68° 29°/ 20°
50%
Saturday
Thunderstorms
78°/ 60° 26°/ 16°
40%
Sunday
Rain Showers
65°/ 55° 18°/ 13°
50%
Monday
Thunderstorms
60°/ 50° 16°/ 10°
70%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
62°/ 52° 17°/ 11°
20%
Thursday
Rain Showers
68°20°
20%

Day: Mostly sunny. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Humid with lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 50 percent.

Denison, IA

Afternoon
Sunny
85°/ 65° 29°/ 18°
60%
Saturday
Thunderstorms
75°/ 58° 24°/ 14°
40%
Sunday
Rain Showers
62°/ 52° 17°/ 11°
50%
Monday
Thunderstorms
55°/ 48° 13°/
70%
Tuesday
Mostly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
62°/ 50° 17°/ 10°
20%
Thursday
Rain Showers
68°20°
30%

Day: Mostly sunny. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. Showers likely, mainly in the evening. Humid with lows in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph, becoming southwest after midnight. Chance of rain 60 percent.

Fort Dodge, IA

Afternoon
Thunderstorms
78°/ 65° 26°/ 18°
70%
Saturday
Thunderstorms
75°/ 58° 24°/ 14°
40%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
40%
Monday
Rain Showers
58°/ 48° 14°/
70%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
65°/ 48° 18°/
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy with a slight chance of showers and thunderstorms. Highs in the upper 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.

Night: A chance of thunderstorms. Showers likely. Humid with lows in the mid 60s. Southeast winds 5 to 10 mph. Chance of rain 70 percent.

Perry, IA

Afternoon
Partly Cloudy
82°/ 68° 28°/ 20°
50%
Saturday
Thunderstorms
82°/ 62° 28°/ 17°
40%
Sunday
Thunderstorms
65°/ 55° 18°/ 13°
50%
Monday
Rain Showers
58°/ 52° 14°/ 11°
70%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
65°/ 52° 18°/ 11°
0%
Thursday
Rain Showers
68°20°
20%

Day: Partly sunny. Highs in the lower 80s. Southeast winds around 10 mph with gusts up to 25 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Humid with lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 50 percent.

Boone, IA

Afternoon
Mostly Cloudy
78°/ 68° 26°/ 20°
70%
Saturday
Thunderstorms
78°/ 62° 26°/ 17°
40%
Sunday
Thunderstorms
65°/ 55° 18°/ 13°
50%
Monday
Rain Showers
58°/ 50° 14°/ 10°
70%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
62°/ 50° 17°/ 10°
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy. Highs in the upper 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph.

Night: Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Humid with lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 70 percent.

Greenfield, IA

Afternoon
Sunny
85°/ 70° 29°/ 21°
50%
Saturday
Thunderstorms
82°/ 62° 28°/ 17°
40%
Sunday
Thunderstorms
65°/ 55° 18°/ 13°
60%
Monday
Rain Showers
58°/ 52° 14°/ 11°
70%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
62°/ 52° 17°/ 11°
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly sunny. Highs in the mid 80s. South winds around 10 mph with gusts up to 20 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Humid with lows around 70. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.

Pocahontas, IA

Afternoon
Thunderstorms
75°/ 65° 24°/ 18°
60%
Saturday
Thunderstorms
72°/ 58° 22°/ 14°
30%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
50%
Monday
Rain Showers
58°/ 48° 14°/
60%
Tuesday
Mostly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
62°/ 48° 17°/
20%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Night: Mostly cloudy. Showers and thunderstorms likely, mainly in the evening. Humid with lows in the mid 60s. Southeast winds 5 to 10 mph with gusts up to 20 mph, becoming southwest after midnight. Chance of rain 60 percent.

Webster City, IA

Afternoon
Mostly Cloudy
75°/ 65° 24°/ 18°
70%
Saturday
Thunderstorms
78°/ 58° 26°/ 14°
40%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
40%
Monday
Rain Showers
58°/ 48° 14°/
60%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
65°/ 48° 18°/
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy. Highs in the mid 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph.

Night: Showers likely with a chance of thunderstorms. Humid with lows in the mid 60s. Southeast winds 10 to 15 mph. Chance of rain 70 percent.

Atlantic, IA

Afternoon
Sunny
85°/ 68° 29°/ 20°
50%
Saturday
Thunderstorms
80°/ 62° 27°/ 17°
40%
Sunday
Thunderstorms
65°/ 55° 18°/ 13°
50%
Monday
Rain Showers
58°/ 52° 14°/ 11°
70%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
62°/ 52° 17°/ 11°
0%
Thursday
Rain Showers
68°20°
30%

Day: Mostly sunny. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Humid with lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 50 percent.

Humboldt, IA

Afternoon
Thunderstorms
75°/ 65° 24°/ 18°
70%
Saturday
Thunderstorms
72°/ 58° 22°/ 14°
40%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
40%
Monday
Rain Showers
58°/ 48° 14°/
60%
Tuesday
Partly Cloudy
62°/ 45° 17°/
0%
Wednesday
Sunny
62°/ 48° 17°/
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.

Night: A chance of thunderstorms. Showers likely. Humid with lows in the mid 60s. Southeast winds 10 to 15 mph, becoming south 5 to 10 mph after midnight. Chance of rain 70 percent.

Winterset, IA

Afternoon
Sunny
85°/ 70° 29°/ 21°
50%
Saturday
Thunderstorms
82°/ 62° 28°/ 17°
50%
Sunday
Thunderstorms
65°/ 58° 18°/ 14°
60%
Monday
Rain Showers
58°/ 52° 14°/ 11°
70%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
62°/ 52° 17°/ 11°
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly sunny. Highs in the mid 80s. Southeast winds around 10 mph with gusts up to 20 mph.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows around 70. South winds 5 to 10 mph. Chance of rain 50 percent.

Ames, IA

Afternoon
Mostly Cloudy
78°/ 68° 26°/ 20°
70%
Saturday
Thunderstorms
78°/ 62° 26°/ 17°
50%
Sunday
Thunderstorms
65°/ 55° 18°/ 13°
50%
Monday
Rain Showers
62°/ 52° 17°/ 11°
70%
Tuesday
Partly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
65°/ 52° 18°/ 11°
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy. Highs in the upper 70s. Southeast winds around 10 mph with gusts up to 25 mph.

Night: Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Humid with lows in the upper 60s. Southeast winds 5 to 10 mph. Chance of rain 70 percent.

Des Moines, IA

Afternoon
Mostly Cloudy
80°/ 70° 27°/ 21°
50%
Saturday
Thunderstorms
82°/ 62° 28°/ 17°
50%
Sunday
Thunderstorms
65°/ 58° 18°/ 14°
60%
Monday
Rain Showers
58°/ 52° 14°/ 11°
70%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
65°/ 52° 18°/ 11°
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy. Highs around 80. Southeast winds around 10 mph with gusts up to 20 mph.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Humid with lows around 70. Southeast winds 5 to 10 mph. Chance of rain 50 percent.

Eagle Grove, IA

Afternoon
Thunderstorms
68°/ 65° 20°/ 18°
70%
Saturday
Thunderstorms
72°/ 58° 22°/ 14°
40%
Sunday
Rain Showers
65°/ 52° 18°/ 11°
30%
Monday
Rain Showers
58°/ 48° 14°/
50%
Tuesday
Partly Cloudy
60°/ 45° 16°/
0%
Wednesday
Sunny
62°/ 48° 17°/
0%
Thursday
Rain Showers
68°20°
20%

Day: Mostly cloudy with a slight chance of showers and thunderstorms. Near steady temperature in the upper 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.

Night: A chance of thunderstorms. Showers likely. Humid with lows in the mid 60s. Southeast winds 10 to 15 mph. Chance of rain 70 percent.

Indianola, IA

Afternoon
Partly Cloudy
82°/ 70° 28°/ 21°
50%
Saturday
Thunderstorms
82°/ 65° 28°/ 18°
50%
Sunday
Thunderstorms
68°/ 58° 20°/ 14°
70%
Monday
Thunderstorms
58°/ 52° 14°/ 11°
70%
Tuesday
Mostly Cloudy
62°/ 48° 17°/
0%
Wednesday
Sunny
65°/ 52° 18°/ 11°
0%
Thursday
Rain Showers
68°20°
20%

Day: Partly sunny. Highs in the lower 80s. Southeast winds around 10 mph with gusts up to 20 mph.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows around 70. South winds 5 to 10 mph. Chance of rain 50 percent.

Names listed above may include county names.

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