Dayton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a city in Webster County, Iowa.
Overnight
66°F
Mostly Cloudy
Mostly cloudy, with a low around 66. South southwest wind around 7 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Mostly Cloudy | 7 mph SSW | 14% |
| Tuesday | 78°F | Showers And Thunderstorms Likely | 6 to 9 mph NW | 67% |
| Tuesday Night | 59°F | Showers And Thunderstorms Likely | 2 to 8 mph N | 66% |
| Wednesday | 74°F | Slight Chance Showers And Thunderstorms | 5 mph NE | 22% |
| Wednesday Night | 53°F | Mostly Clear | 2 mph E | 3% |
| Thursday | 80°F | Sunny | 0 to 3 mph ESE | 1% |
| Thursday Night | 60°F | Mostly Clear | 3 mph SSE | 1% |
| Friday | 84°F | Sunny | 3 to 9 mph S | 7% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph S | 20% |
| Saturday | 88°F | Mostly Sunny | 3 to 10 mph S | 12% |
| Saturday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 10 mph SSE | 17% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph SSE | 17% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 9 mph SSE | 31% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 12 mph SSE | 31% |
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 Aug 4, 2026.