Dayton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a city in Webster County, Iowa.
Tonight
44°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 44, with temperatures rising to around 46 overnight. Northwest wind 12 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Rain Showers Likely | 12 to 15 mph NW | 64% |
| Wednesday | 50°F | Chance Rain Showers | 14 mph W | 33% |
| Wednesday Night | 41°F | Chance Rain Showers | 12 mph WNW | 42% |
| Thursday | 51°F | Rain Showers Likely | 12 mph NW | 59% |
| Thursday Night | 37°F | Mostly Cloudy | 5 to 8 mph N | 11% |
| Friday | 51°F | Partly Sunny | 2 to 6 mph N | 0% |
| Friday Night | 32°F | Mostly Cloudy | 1 mph NW | 0% |
| Saturday | 56°F | Mostly Sunny | 1 to 5 mph WSW | 1% |
| Saturday Night | 36°F | Mostly Clear | 3 mph W | 4% |
| Sunday | 61°F | Sunny | 5 mph W | 5% |
| Sunday Night | 38°F | Mostly Clear | 6 mph SW | 1% |
| Monday | 65°F | Sunny | 6 to 9 mph WSW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 63°F | Mostly Sunny | 5 mph WNW | 1% |
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
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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.