Spencer, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Spencer, a city in Clay County, Iowa.
Tonight
40°F
Rain Showers
Rain showers. Cloudy. Low around 40, with temperatures rising to around 43 overnight. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Spencer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 40°F | Rain Showers | 15 to 20 mph NW | 87% |
| Wednesday | 47°F | Rain Showers | 15 mph WNW | 88% |
| Wednesday Night | 37°F | Rain Showers Likely | 10 to 15 mph NW | 73% |
| Thursday | 47°F | Chance Rain Showers | 10 to 15 mph NNW | 45% |
| Thursday Night | 33°F | Mostly Cloudy | 5 to 10 mph N | 7% |
| Friday | 47°F | Partly Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 30°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 54°F | Mostly Sunny | 0 to 10 mph SW | 2% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 5% |
| Sunday | 58°F | Sunny | 5 to 10 mph W | 4% |
| Sunday Night | 36°F | Mostly Clear | 5 mph SSW | 1% |
| Monday | 61°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 58°F | Mostly Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Spencer (43.147, -95.153). Updated through the day.
Growing snapshot for Spencer
Last spring frost
May 1
First fall frost
Oct 3
Growing season
154 days
Hardiness zone
5a
More local growing data for Spencer: nearby ZIP 51301 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Spencer 1 N, Ia (0.9 mi from Spencer). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.