Martinsburg, IA Weather & Growing Conditions
Today
52°F
Cloudy
Cloudy, with a high near 52. West wind 15 to 20 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 52°F | Cloudy | 15 to 20 mph W | 14% |
| Tonight | 44°F | Mostly Cloudy | 10 to 15 mph W | 7% |
| Thursday | 54°F | Chance Rain Showers | 10 to 15 mph W | 53% |
| Thursday Night | 41°F | Mostly Cloudy | 10 mph N | 13% |
| Friday | 50°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Friday Night | 30°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 58°F | Sunny | 5 mph W | 1% |
| Sunday Night | 36°F | Clear | 5 mph SW | 0% |
| Monday | 64°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph NW | 0% |
| Tuesday Night | 42°F | Partly Cloudy | 0 to 5 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Martinsburg, IA
Last spring frost
Apr 24
First fall frost
Oct 15
Growing season
172 days
Hardiness zone
5b
Explore more for Martinsburg, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Sigourney, Ia (11.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.