Primghar, IA Weather & Growing Conditions
Overnight
63°F
Areas Of Fog
Areas of fog before 5am, then areas of fog and a slight chance of showers and thunderstorms. Cloudy. Low around 63, with temperatures rising to around 66 overnight. North northeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Areas Of Fog | 5 mph NNE | 22% |
| Saturday | 69°F | Areas Of Fog then Cloudy | 5 to 10 mph N | 33% |
| Saturday Night | 56°F | Patchy Fog then Cloudy | 10 to 15 mph NNE | 13% |
| Sunday | 65°F | Mostly Cloudy | 15 mph NE | 12% |
| Sunday Night | 52°F | Chance Rain Showers | 10 to 15 mph ENE | 54% |
| Monday | 59°F | Rain Showers Likely | 10 to 15 mph ENE | 56% |
| Monday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 40% |
| Tuesday | 60°F | Partly Sunny | 5 to 10 mph E | 6% |
| Tuesday Night | 46°F | Partly Cloudy | 5 mph ESE | 0% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph SE | 5% |
| Wednesday Night | 50°F | Mostly Cloudy then Chance Rain Showers | 5 mph SE | 27% |
| Thursday | 67°F | Chance Rain Showers | 5 mph SSE | 27% |
| Thursday Night | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph SSE | 15% |
| Friday | 68°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph SE | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Primghar, IA
Last spring frost
Apr 29
First fall frost
Oct 10
Growing season
163 days
Hardiness zone
5a
Explore more for Primghar, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Primghar, Ia (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.