Peterson, IA Weather & Growing Conditions
Overnight
39°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 39, with temperatures rising to around 42 overnight. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 39°F | Rain Showers Likely | 15 mph NW | 58% |
| Wednesday | 46°F | Chance Rain Showers | 15 mph WNW | 49% |
| Wednesday Night | 38°F | Chance Rain Showers | 10 to 15 mph NW | 45% |
| Thursday | 46°F | Mostly Cloudy | 10 to 15 mph NNW | 10% |
| Thursday Night | 32°F | Mostly Cloudy | 5 to 10 mph N | 0% |
| 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 5 mph SW | 1% |
| Saturday Night | 33°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 55°F | Sunny | 5 mph WSW | 0% |
| Sunday Night | 36°F | Mostly Clear | 5 mph SW | 0% |
| Monday | 61°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Tuesday | 59°F | Mostly Sunny | 0 to 5 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Peterson, IA
Last spring frost
May 4
First fall frost
Oct 4
Growing season
152 days
Hardiness zone
5a
Explore more for Peterson, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Cherokee, Ia (15.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.