Spencer, IA Weather & Growing Conditions
Tonight
40°F
Rain Showers
Rain showers. Cloudy, with a low around 40. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 40°F | Rain Showers | 15 mph NW | 83% |
| Wednesday | 46°F | Chance Rain Showers | 15 mph WNW | 54% |
| Wednesday Night | 38°F | Chance Rain Showers | 10 to 15 mph NW | 47% |
| Thursday | 46°F | Mostly Cloudy | 10 to 15 mph NNW | 10% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 10 mph N | 1% |
| Friday | 46°F | Mostly Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 27°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 50°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| 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). Updated through the day.
Growing snapshot for Spencer, IA
Last spring frost
May 1
First fall frost
Oct 3
Growing season
154 days
Hardiness zone
5a
Explore more for Spencer, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Spencer 1 N, Ia (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.