Dayton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a city in Webster County, Iowa.
Today
50°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 50, with temperatures falling to around 47 in the afternoon. West northwest wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Chance Rain Showers | 15 mph WNW | 31% |
| Tonight | 42°F | Chance Rain Showers | 12 mph WNW | 42% |
| Thursday | 52°F | Rain Showers Likely then Mostly Cloudy | 12 mph NW | 55% |
| Thursday Night | 37°F | Mostly Cloudy | 5 to 9 mph N | 5% |
| Friday | 50°F | Mostly Sunny | 5 mph N | 4% |
| Friday Night | 29°F | Partly Cloudy | 1 mph NNE | 0% |
| Saturday | 53°F | Mostly Sunny | 3 mph SW | 0% |
| Saturday Night | 35°F | Mostly Clear | 3 mph W | 1% |
| Sunday | 59°F | Sunny | 5 mph W | 1% |
| Sunday Night | 37°F | Mostly Clear | 5 mph SW | 0% |
| Monday | 64°F | Sunny | 5 to 8 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 63°F | Sunny | 3 mph NNW | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 2 mph E | 2% |
Forecast source: National Weather Service (api.weather.gov) for Dayton (42.262, -94.071). Updated through the day.
Growing snapshot for Dayton
Last spring frost
Apr 28
First fall frost
Oct 12
Growing season
165 days
Hardiness zone
5a
More local growing data for Dayton: nearby ZIP 50530 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Badger
Barnum
Callender
Clare
Coalville
Duncombe
Fort Dodge
Gowrie
Harcourt
Lehigh
Moorland
Otho
Vincent
Climate data from the nearest NOAA station, Boone, Ia (17.5 mi from Dayton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.