Clarksville, IA Weather & Growing Conditions
Tonight
47°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy. Low around 47, with temperatures rising to around 51 overnight. East northeast wind 6 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Showers And Thunderstorms Likely | 6 to 9 mph ENE | 74% |
| Wednesday | 52°F | Rain Showers Likely | 10 to 17 mph WSW | 64% |
| Wednesday Night | 43°F | Rain Showers Likely | 12 to 15 mph W | 63% |
| Thursday | 51°F | Rain Showers Likely | 14 mph NW | 72% |
| Thursday Night | 37°F | Mostly Cloudy | 8 to 12 mph N | 13% |
| Friday | 49°F | Partly Sunny | 3 to 9 mph N | 1% |
| Friday Night | 30°F | Partly Cloudy | 2 mph NNW | 0% |
| Saturday | 53°F | Mostly Sunny | 0 to 6 mph WSW | 2% |
| Saturday Night | 35°F | Mostly Clear | 5 mph W | 4% |
| Sunday | 58°F | Sunny | 5 to 8 mph WNW | 7% |
| Sunday Night | 36°F | Mostly Clear | 6 mph SW | 2% |
| Monday | 61°F | Mostly Sunny | 6 to 12 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 7 mph WNW | 0% |
| Tuesday | 59°F | Mostly Sunny | 7 mph WNW | 1% |
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 Nov 4, 2026.