Jewell Junction, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jewell Junction, a city in Hamilton County, Iowa.
Today
79°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 79, with temperatures falling to around 75 in the afternoon. West wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Jewell Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Showers And Thunderstorms Likely | 6 to 9 mph W | 62% |
| Tonight | 59°F | Showers And Thunderstorms Likely | 5 to 8 mph N | 70% |
| Wednesday | 74°F | Chance Showers And Thunderstorms then Mostly Cloudy | 6 mph NE | 28% |
| Wednesday Night | 54°F | Mostly Clear | 3 mph ENE | 4% |
| Thursday | 80°F | Sunny | 0 to 3 mph E | 1% |
| Thursday Night | 60°F | Mostly Clear | 3 mph SSE | 1% |
| Friday | 84°F | Sunny | 3 to 9 mph S | 8% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph S | 19% |
| Saturday | 88°F | Sunny | 3 to 10 mph S | 13% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 12 mph S | 16% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph SSE | 16% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 9 mph SSE | 32% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 12 mph SSE | 32% |
| Monday Night | 69°F | Mostly Cloudy then Chance Showers And Thunderstorms | 9 to 14 mph E | 29% |
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 Aug 4, 2026.