Clarksville, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clarksville, a city in Butler County, Iowa.
Overnight
64°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms. Cloudy. Low around 64, with temperatures rising to around 66 overnight. Southeast wind around 9 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Clarksville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Patchy Fog | 9 mph SE | 47% |
| Saturday | 76°F | Patchy Fog | 9 mph WSW | 61% |
| Saturday Night | 58°F | Chance Showers And Thunderstorms | 9 to 13 mph N | 33% |
| Sunday | 66°F | Chance Rain Showers then Slight Chance Drizzle | 15 mph NE | 30% |
| Sunday Night | 52°F | Chance Rain Showers | 12 to 15 mph ENE | 31% |
| Monday | 62°F | Chance Rain Showers | 15 mph ENE | 44% |
| Monday Night | 47°F | Chance Rain Showers | 7 to 12 mph ENE | 39% |
| Tuesday | 61°F | Slight Chance Rain Showers then Mostly Sunny | 7 to 10 mph ENE | 15% |
| 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 | Mostly Cloudy | 3 mph E | 4% |
| Friday | 69°F | Mostly Sunny | 2 to 6 mph ESE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Clarksville (42.779, -92.668). Updated through the day.
Growing snapshot for Clarksville
Last spring frost
Apr 27
First fall frost
Oct 8
Growing season
165 days
Hardiness zone
5a
More local growing data for Clarksville: nearby ZIP 50619 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Allison, Ia (7.7 mi from Clarksville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.