Danbury, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Danbury, a city in Woodbury County, Iowa.
Tonight
38°F
Rain Showers
Rain showers. Cloudy. Low around 38, with temperatures rising to around 42 overnight. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Danbury
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 38°F | Rain Showers | 10 to 15 mph NW | 84% |
| Wednesday | 48°F | Chance Rain Showers | 10 to 15 mph WNW | 48% |
| Wednesday Night | 37°F | Cloudy then Chance Rain Showers | 5 to 10 mph WNW | 46% |
| Thursday | 49°F | Chance Rain Showers | 10 mph NNW | 39% |
| Thursday Night | 33°F | Mostly Cloudy | 0 to 5 mph N | 2% |
| Friday | 50°F | Partly Sunny | 0 mph | 0% |
| Friday Night | 31°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 56°F | Mostly Sunny | 0 to 5 mph SW | 3% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph W | 3% |
| Sunday | 60°F | Sunny | 0 to 5 mph WSW | 3% |
| Sunday Night | 37°F | Mostly Clear | 5 mph SSW | 0% |
| Monday | 63°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 38°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Tuesday | 61°F | Mostly Sunny | 0 to 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Danbury (42.236, -95.722). Updated through the day.
Growing snapshot for Danbury
Last spring frost
May 3
First fall frost
Oct 1
Growing season
151 days
Hardiness zone
5a
More local growing data for Danbury: nearby ZIP 51019 weather · frost dates · planting calendar · Iowa frost dates
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Sergeant Bluff
Sioux City
Sloan
Smithland
Climate data from the nearest NOAA station, Mapleton No.2, Ia (8.6 mi from Danbury). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.