Bertram, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bertram, a city in Linn County, Iowa.
Overnight
63°F
Partly Cloudy
Partly cloudy. Low around 63, with temperatures rising to around 65 overnight. South wind around 5 mph.
7-day forecast for Bertram
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Partly Cloudy | 5 mph S | 0% |
| Tuesday | 83°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 25% |
| Tuesday Night | 64°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 82% |
| Wednesday | 77°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph N | 64% |
| Wednesday Night | 58°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 40% |
| Thursday | 81°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph NE | 24% |
| Thursday Night | 60°F | Mostly Clear | 0 mph | 2% |
| Friday | 84°F | Sunny | 0 to 5 mph S | 3% |
| Friday Night | 65°F | Mostly Clear | 5 mph S | 10% |
| Saturday | 87°F | Mostly Sunny | 5 to 10 mph S | 10% |
| Saturday Night | 71°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 20% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph S | 20% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 39% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 39% |
Forecast source: National Weather Service (api.weather.gov) for Bertram (41.952, -91.538). Updated through the day.
Growing snapshot for Bertram
Last spring frost
Apr 28
First fall frost
Oct 12
Growing season
166 days
Hardiness zone
5b
More local growing data for Bertram: nearby ZIP 52403 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Alburnett
Cedar Rapids
Center Point
Central City
Coggon
Ely
Fairfax
Hiawatha
Marion
Mount Vernon
Palo
Prairieburg
Robins
Springville
Walker
Climate data from the nearest NOAA station, Cedar Rapids #1, Ia (5.9 mi from Bertram). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.