Primghar, IA Weather & Growing Conditions
Today
71°F
Patchy Smoke
Patchy smoke and showers and thunderstorms before 4pm, then patchy smoke and scattered showers and thunderstorms. Mostly cloudy, with a high near 71. North wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Patchy Smoke | 5 to 10 mph N | 82% |
| Tonight | 54°F | Patchy Smoke then Mostly Cloudy | 0 to 5 mph NW | 52% |
| Wednesday | 75°F | Mostly Sunny | 0 to 5 mph E | 1% |
| Wednesday Night | 52°F | Mostly Clear | 5 mph SSE | 0% |
| Thursday | 81°F | Sunny | 5 to 10 mph S | 0% |
| Thursday Night | 60°F | Mostly Clear | 5 to 10 mph S | 4% |
| Friday | 86°F | Sunny | 5 to 15 mph SSW | 4% |
| Friday Night | 64°F | Mostly Clear | 10 mph S | 13% |
| Saturday | 89°F | Sunny | 5 to 15 mph S | 6% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 15 mph SE | 22% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SE | 20% |
| Sunday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 to 15 mph ESE | 22% |
| Monday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 15 mph E | 22% |
| Monday Night | 66°F | Slight Chance Showers And Thunderstorms | 15 mph ENE | 27% |
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 Aug 4, 2026.