Tennant, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tennant, a city in Shelby County, Iowa.
Overnight
69°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 3am, then showers and thunderstorms likely between 3am and 4am, then a chance of showers and thunderstorms. Mostly cloudy. Low around 69, with temperatures rising to around 71 overnight. Southwest wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Tennant
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Chance Showers And Thunderstorms | 8 mph SW | 60% |
| Saturday | 78°F | Chance Showers And Thunderstorms | 3 to 8 mph WNW | 39% |
| Saturday Night | 60°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 mph N | 33% |
| Sunday | 63°F | Chance Rain Showers | 9 to 13 mph NE | 34% |
| Sunday Night | 55°F | Chance Rain Showers | 8 to 12 mph NE | 37% |
| Monday | 59°F | Rain Showers Likely | 10 mph ENE | 59% |
| Monday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 5 to 9 mph NE | 49% |
| Tuesday | 59°F | Partly Sunny | 8 mph ENE | 3% |
| Tuesday Night | 46°F | Partly Cloudy | 2 to 6 mph E | 0% |
| Wednesday | 63°F | Mostly Sunny | 6 mph ESE | 1% |
| Wednesday Night | 51°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SE | 18% |
| Thursday | 63°F | Chance Rain Showers | 3 to 7 mph SE | 27% |
| Thursday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph SE | 22% |
| Friday | 65°F | Slight Chance Rain Showers | 3 to 8 mph SE | 22% |
Forecast source: National Weather Service (api.weather.gov) for Tennant (41.594, -95.445). Updated through the day.
Growing snapshot for Tennant
Last spring frost
Apr 27
First fall frost
Oct 9
Growing season
165 days
Hardiness zone
5b
More local growing data for Tennant: nearby ZIP 51570 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Harlan, Ia (10.6 mi from Tennant). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.