Tennant, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tennant, a city in Shelby County, Iowa.
Today
78°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms between 10am and 11am, then a slight chance of showers and thunderstorms between 11am and noon, then a chance of showers and thunderstorms between noon and 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 78, with temperatures falling to around 75 in the afternoon. North wind 5 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Tennant
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Chance Showers And Thunderstorms | 5 to 13 mph N | 46% |
| Tonight | 59°F | Chance Showers And Thunderstorms then Patchy Smoke | 5 to 12 mph NNE | 84% |
| Wednesday | 72°F | Patchy Smoke | 8 mph ENE | 50% |
| Wednesday Night | 55°F | Mostly Clear | 1 to 6 mph E | 4% |
| Thursday | 79°F | Sunny | 1 to 6 mph ESE | 1% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SSE | 3% |
| Friday | 84°F | Sunny | 5 to 10 mph S | 3% |
| Friday Night | 66°F | Mostly Clear | 7 mph S | 8% |
| Saturday | 88°F | Sunny | 5 to 15 mph S | 3% |
| Saturday Night | 71°F | Mostly Clear | 12 to 15 mph S | 11% |
| Sunday | 89°F | Mostly Sunny | 10 to 14 mph SSE | 10% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 15 mph SSE | 27% |
| Monday | 89°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 13 to 16 mph S | 23% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 12 to 16 mph SE | 23% |
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 Aug 4, 2026.