Atlantic, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Atlantic, a city in Cass County, Iowa.
Overnight
42°F
Slight Chance Rain Showers
A slight chance of rain showers before 2am. Cloudy. Low around 42, with temperatures rising to around 44 overnight. Northwest wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Atlantic
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Slight Chance Rain Showers | 13 to 17 mph NW | 19% |
| Wednesday | 50°F | Mostly Cloudy | 13 to 16 mph W | 12% |
| Wednesday Night | 41°F | Cloudy then Chance Rain Showers | 12 mph WNW | 29% |
| Thursday | 51°F | Chance Rain Showers then Mostly Cloudy | 12 mph NW | 32% |
| Thursday Night | 38°F | Mostly Cloudy | 3 to 8 mph N | 2% |
| Friday | 50°F | Mostly Sunny | 5 mph NNE | 1% |
| Friday Night | 31°F | Partly Cloudy | 1 mph NNE | 0% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Saturday Night | 35°F | Mostly Clear | 1 mph WSW | 0% |
| Sunday | 59°F | Sunny | 1 to 6 mph WSW | 0% |
| Sunday Night | 38°F | Clear | 1 to 5 mph SSW | 0% |
| Monday | 64°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 1 to 5 mph WNW | 0% |
| Tuesday | 64°F | Mostly Sunny | 1 to 5 mph NNW | 0% |
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
Nearby towns & communities
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 Nov 4, 2026.