Clarksville, IA Weather & Growing Conditions
Today
76°F
Patchy Fog
Patchy fog and showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 76, with temperatures falling to around 73 in the afternoon. West wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Patchy Fog | 9 mph W | 55% |
| Tonight | 58°F | Chance Showers And Thunderstorms | 12 mph N | 33% |
| Sunday | 66°F | Chance Rain Showers then Slight Chance Drizzle | 13 to 16 mph NE | 29% |
| Sunday Night | 52°F | Chance Rain Showers | 14 mph ENE | 30% |
| Monday | 62°F | Chance Rain Showers | 15 mph ENE | 44% |
| Monday Night | 46°F | Chance Rain Showers | 7 to 12 mph ENE | 38% |
| Tuesday | 61°F | Slight Chance Rain Showers then Mostly Sunny | 7 to 10 mph ENE | 16% |
| Tuesday Night | 43°F | Partly Cloudy | 3 to 7 mph ENE | 2% |
| Wednesday | 65°F | Sunny | 6 mph E | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 5 mph E | 5% |
| Thursday | 66°F | Partly Sunny | 5 mph ESE | 8% |
| Thursday Night | 51°F | Partly Cloudy | 3 mph ESE | 4% |
| Friday | 69°F | Mostly Sunny | 2 to 6 mph ESE | 4% |
| Friday Night | 52°F | Partly Cloudy | 5 mph SE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Clarksville, IA
Last spring frost
Apr 27
First fall frost
Oct 8
Growing season
165 days
Hardiness zone
5a
Explore more for Clarksville, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Allison, Ia (7.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.