Clarion, IA Weather & Growing Conditions
Overnight
65°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. Low around 65, with temperatures rising to around 67 overnight. Southeast wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Chance Showers And Thunderstorms | 7 mph SE | 44% |
| Saturday | 74°F | Chance Showers And Thunderstorms then Patchy Fog | 6 to 9 mph WNW | 45% |
| Saturday Night | 58°F | Slight Chance Rain Showers | 12 mph N | 19% |
| Sunday | 66°F | Mostly Cloudy then Slight Chance Drizzle | 15 mph NE | 22% |
| Sunday Night | 52°F | Chance Rain Showers | 13 mph ENE | 35% |
| Monday | 61°F | Chance Rain Showers | 9 to 14 mph ENE | 48% |
| Monday Night | 47°F | Chance Rain Showers | 6 to 9 mph ENE | 42% |
| Tuesday | 61°F | Mostly Sunny | 8 mph ENE | 9% |
| Tuesday Night | 44°F | Mostly Clear | 2 to 6 mph E | 0% |
| Wednesday | 65°F | Sunny | 5 mph E | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 3 mph ESE | 8% |
| Thursday | 66°F | Partly Sunny | 5 mph SE | 14% |
| Thursday Night | 52°F | Mostly Cloudy | 2 mph SE | 6% |
| Friday | 69°F | Partly Sunny | 2 to 6 mph SE | 6% |
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 Sep 19, 2026.