Clarion, IA Weather & Growing Conditions
Overnight
44°F
Rain Showers
Rain showers. Cloudy. Low around 44, with temperatures rising to around 47 overnight. Northwest wind around 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Rain Showers | 15 mph NW | 77% |
| Wednesday | 50°F | Chance Rain Showers | 14 to 18 mph W | 51% |
| Wednesday Night | 41°F | Rain Showers Likely | 14 mph WNW | 60% |
| Thursday | 50°F | Chance Rain Showers | 12 to 16 mph NNW | 51% |
| Thursday Night | 36°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 10 mph N | 19% |
| Friday | 49°F | Partly Sunny | 2 to 6 mph N | 1% |
| Friday Night | 31°F | Partly Cloudy | 2 mph SE | 1% |
| Saturday | 55°F | Mostly Sunny | 1 to 5 mph SW | 2% |
| Saturday Night | 35°F | Partly Cloudy | 5 mph W | 3% |
| Sunday | 59°F | Sunny | 7 mph W | 6% |
| Sunday Night | 37°F | Mostly Clear | 7 mph SW | 2% |
| Monday | 63°F | Sunny | 7 to 12 mph WSW | 0% |
| Monday Night | 39°F | Mostly Clear | 6 mph WNW | 0% |
| Tuesday | 60°F | Mostly Sunny | 6 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Clarion, IA
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
162 days
Hardiness zone
5a
Explore more for Clarion, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Clarion, Ia (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.