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Atlantic, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Atlantic, a city in Cass County, Iowa.

This Afternoon
84°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy. High near 84, with temperatures falling to around 77 in the afternoon. North wind around 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Atlantic

WhenTempForecastWindPrecip
This Afternoon 84°F Slight Chance Showers And Thunderstorms 9 mph N 23%
Tonight 61°F Chance Showers And Thunderstorms 7 to 12 mph NNE 48%
Sunday 65°F Slight Chance Drizzle then Chance Rain Showers 8 to 12 mph NNE 41%
Sunday Night 55°F Rain Showers Likely 7 to 10 mph NE 65%
Monday 58°F Rain Showers 10 mph NE 77%
Monday Night 50°F Rain Showers Likely then Mostly Cloudy 5 to 9 mph NE 71%
Tuesday 60°F Mostly Cloudy 7 mph NE 4%
Tuesday Night 46°F Partly Cloudy 1 to 6 mph ENE 2%
Wednesday 63°F Mostly Sunny 1 to 5 mph E 0%
Wednesday Night 52°F Mostly Cloudy 3 mph ESE 14%
Thursday 66°F Chance Rain Showers 2 to 7 mph SSE 35%
Thursday Night 57°F Chance Rain Showers 0 to 5 mph SE 29%
Friday 68°F Slight Chance Rain Showers 0 to 6 mph ESE 19%
Friday Night 59°F Mostly Cloudy then Chance Rain Showers 5 mph ESE 25%

Forecast source: National Weather Service (api.weather.gov) for Atlantic (41.393, -95.022). Updated through the day.

Growing snapshot for Atlantic

Last spring frost
Apr 30
First fall frost
Oct 2
Growing season
153 days
Hardiness zone
5a

More local growing data for Atlantic: nearby ZIP 50022 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Atlantic 1 Ne, Ia (0.1 mi from Atlantic). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.