Jewell Junction, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jewell Junction, a city in Hamilton County, Iowa.
Overnight
44°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 44, with temperatures rising to around 46 overnight. West northwest wind around 15 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Jewell Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Chance Rain Showers | 15 mph WNW | 31% |
| Wednesday | 50°F | Chance Rain Showers | 16 mph W | 32% |
| Wednesday Night | 43°F | Chance Rain Showers | 13 mph W | 37% |
| Thursday | 53°F | Rain Showers Likely then Mostly Cloudy | 13 mph NW | 62% |
| Thursday Night | 37°F | Mostly Cloudy | 5 to 9 mph N | 8% |
| Friday | 50°F | Mostly Sunny | 2 to 6 mph N | 4% |
| Friday Night | 29°F | Partly Cloudy | 1 mph N | 2% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Saturday Night | 35°F | Mostly Clear | 2 mph W | 1% |
| Sunday | 58°F | Sunny | 2 to 6 mph W | 1% |
| Sunday Night | 36°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 64°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 63°F | Mostly Sunny | 3 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Jewell Junction (42.312, -93.639). Updated through the day.
Growing snapshot for Jewell Junction
Last spring frost
May 3
First fall frost
Oct 2
Growing season
150 days
Hardiness zone
5a
More local growing data for Jewell Junction: nearby ZIP 50130 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Webster City, Ia (13.2 mi from Jewell Junction). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.