Blairstown, IA Weather & Growing Conditions
This Afternoon
51°F
Slight Chance Drizzle
A slight chance of drizzle. Cloudy, with a high near 51. West wind around 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 51°F | Slight Chance Drizzle | 15 mph W | 12% |
| Tonight | 46°F | Slight Chance Rain Showers | 10 to 15 mph W | 20% |
| Thursday | 51°F | Chance Rain Showers | 10 mph NW | 37% |
| Thursday Night | 36°F | Mostly Cloudy | 5 to 10 mph N | 9% |
| Friday | 47°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Friday Night | 27°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 32°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 59°F | Sunny | 5 mph W | 0% |
| Sunday Night | 35°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Monday | 65°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Clear | 5 mph W | 0% |
| Tuesday | 62°F | Sunny | 0 to 5 mph NW | 2% |
| Tuesday Night | 39°F | Partly Cloudy | 0 to 5 mph N | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Blairstown, IA
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5a
Explore more for Blairstown, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Belle Plaine, Ia (9.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.