Weather Alert
Jefferson Weather Warning NWS WEATHER ALERT FOR THE JEFFERSON, IA AREA - DENSE FOG ADVISORY Issued: 131 AM CDT Thu Sep 17 2026 Jefferson Weather Warning

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Jefferson, IA Weather Forecast

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Jefferson, IA Weather Forecast

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Jefferson IA weather - Fog - 68°F
Fog
68°F
Updated 1:45 am
Feels Like 72°F
Humidity 100%
Wind N 0 mph
Barometer  30.17 in
Dew Point 68°F
Jefferson IA weather - Fog - 20°C
Fog
20°C
Updated 1:45 am
Feels Like 22°C
Humidity 100%
Wind N 0 km/h
Barometer  102.2 kPa
Dew Point 20°C
WX Settings

Jefferson Weather Forecast

REST OF TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY
Jefferson, IA Weather - Rest Of Tonight Chance Of T-Storm Jefferson, IA Weather - Thursday Chance Of Showers Jefferson, IA Weather - Thursday Night Chance Of T-Storm Jefferson, IA Weather - Friday Chance Of T-Storm Jefferson, IA Weather - Friday Night Chance Of T-Storm Jefferson, IA Weather - Saturday Chance Of T-Storm Jefferson, IA Weather - Saturday Night Chance Of T-Storm Jefferson, IA Weather - Sunday Chance Of T-Storm Jefferson, IA Weather - Sunday Night Chance Of T-Storm Jefferson, IA Weather - Monday Chance Of Showers Jefferson, IA Weather - Monday Night Chance Of Showers Jefferson, IA Weather - Tuesday Chance Of Showers
Chance of T-Storm Chance of Showers Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of Showers Chance of Showers Chance of Showers
Lo: 65°FLo: 18°C Hi: 75°FHi: 24°C
 Lo: 65°FLo: 18°C Hi: 85°FHi: 29°C
 Lo: 69°FLo: 21°C Hi: 79°FHi: 26°C
 Lo: 60°FLo: 16°C Hi: 69°FHi: 21°C
 Lo: 59°FLo: 15°C Hi: 65°FHi: 18°C
 Lo: 55°FLo: 13°C Hi: 69°FHi: 21°C
POP: 40% POP: 20% POP: 50% POP: 50% POP: 80% POP: 20% POP: 50% POP: 60% POP: 40% POP: 40% POP: 20% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 1037 PM CDT Wed Sep 16 2026 Jefferson, IA Weather - WeatherWorld.com

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Issued: 1117 PM CDT Wed Sep 16 2026

Key Messages

  • Storms develop late tonight/after midnight with locally heavy rainfall possible. Soils are saturated leaving more susceptibility to flash flooding so Flood Watch is in effect for areas along and south of Highway 30 through Thursday morning.
  • Fog, some dense, is expected tonight into Thursday morning.
  • A break in the rain is expected from late Thursday morning through a good portion of the evening before storms return after midnight. Highest rainfall expected over northern Iowa.
  • Scatter...