Weather Alert
Cass County Weather Warning NWS WEATHER ALERT FOR THE CASS COUNTY, IA AREA - Issued: 214 PM CDT Sun Sep 20 2026 Cass County Weather Warning

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Cass County, IA Weather - Hour by Hour Forecast

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Cass County, IA Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Light Rain. Temperature is 64°F18°C, dew point 64°F18°C, humidity 100%. Wind direction is NE at 13 mph21 km/h with visibility of 1 1/2 mi2 km. Barometric pressure is 29.99 in1015 mb.
Tonight - A slight chance of very light drizzle early, then showers likely. Patchy fog. Lows in the upper 50s. Northeast winds 5 to 10 mph. .. Full Forecast
Monday - Cloudy with a chance of showers. Patchy fog. A slight chance of thunderstorms in the afternoon. Near steady temperature in the upp.. Full Forecast

Cass County Hourly Weather

24 Hour Forecast Scroll
Sun, Sep 20
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Cass County, IA Hourly Weather - Cloudy - 5:00 PM Cass County, IA Hourly Weather - Cloudy - 6:00 PM Cass County, IA Hourly Weather - Cloudy - 7:00 PM Cass County, IA Hourly Weather - Cloudy - 8:00 PM Cass County, IA Hourly Weather - Cloudy - 9:00 PM Cass County, IA Hourly Weather - Cloudy - 10:00 PM Cass County, IA Hourly Weather - Cloudy - 11:00 PM Cass County, IA Hourly Weather - Cloudy - 12:00 AM Cass County, IA Hourly Weather - Cloudy - 1:00 AM Cass County, IA Hourly Weather - Cloudy - 2:00 AM Cass County, IA Hourly Weather - Cloudy - 3:00 AM Cass County, IA Hourly Weather - Cloudy - 4:00 AM Cass County, IA Hourly Weather - Cloudy - 5:00 AM Cass County, IA Hourly Weather - Cloudy - 6:00 AM Cass County, IA Hourly Weather - Cloudy - 7:00 AM Cass County, IA Hourly Weather - Cloudy - 8:00 AM Cass County, IA Hourly Weather - Cloudy - 9:00 AM Cass County, IA Hourly Weather - Cloudy - 10:00 AM Cass County, IA Hourly Weather - Cloudy - 11:00 AM Cass County, IA Hourly Weather - Cloudy - 12:00 PM Cass County, IA Hourly Weather - Cloudy - 1:00 PM Cass County, IA Hourly Weather - Cloudy - 2:00 PM Cass County, IA Hourly Weather - Cloudy - 3:00 PM Cass County, IA Hourly Weather - Cloudy - 4:00 PM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
65°F18°C 64°F18°C 64°F18°C 63°F17°C 62°F17°C 61°F16°C 60°F16°C 60°F16°C 59°F15°C 58°F14°C 58°F14°C 57°F14°C 57°F14°C 56°F13°C 56°F13°C 57°F14°C 58°F14°C 59°F15°C 59°F15°C 60°F16°C 60°F16°C 60°F16°C 61°F16°C 61°F16°C
- - - Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain
14% 14% 14% 29% 29% 29% 29% 29% 29% 21% 21% 21% 21% 21% 21% 36% 36% 36% 36% 36% 36% 38% 38% 38%
64°F18°C 64°F18°C 64°F18°C 63°F17°C 62°F17°C 61°F16°C 60°F16°C 60°F16°C 59°F15°C 58°F14°C 58°F14°C 57°F14°C 57°F14°C 56°F13°C 56°F13°C 57°F14°C 58°F14°C 59°F15°C 59°F15°C 60°F16°C 60°F16°C 60°F16°C 60°F16°C 60°F16°C
97% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 97% 97%
NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE
9 mph 8 mph 8 mph 8 mph 8 mph 8 mph 8 mph 5 mph 5 mph 5 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 5 mph 5 mph 5 mph 6 mph 6 mph
3 mi5 km 3 mi5 km .75 mi1 km 3 mi5 km 3 mi5 km 5 mi8 km 5 mi8 km 3 mi5 km 3 mi5 km .75 mi1 km .75 mi1 km .5 mi1 km .5 mi1 km .5 mi1 km .5 mi1 km .5 mi1 km .75 mi1 km .75 mi1 km 3 mi5 km 3 mi5 km 5 mi8 km 5 mi8 km 5 mi8 km 5 mi8 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KAIO model statistics.

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Prob Precip % = Probability of Precipitation.

Cass County 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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