Mystic, IA Weather & Growing Conditions
Today
85°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 85, with temperatures falling to around 83 in the afternoon. Southwest wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Chance Showers And Thunderstorms | 5 to 9 mph SW | 33% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 2 to 6 mph NNW | 76% |
| Sunday | 70°F | Rain Showers Likely then Chance Showers And Thunderstorms | 6 to 10 mph NNE | 57% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 mph NE | 67% |
| Monday | 62°F | Rain Showers Likely | 12 mph NE | 67% |
| Monday Night | 52°F | Chance Rain Showers | 6 to 10 mph NE | 46% |
| Tuesday | 60°F | Chance Rain Showers then Partly Sunny | 8 mph NE | 38% |
| Tuesday Night | 47°F | Partly Cloudy | 2 to 6 mph NE | 3% |
| Wednesday | 64°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 2 mph ENE | 4% |
| Thursday | 67°F | Partly Sunny | 2 mph E | 11% |
| Thursday Night | 55°F | Mostly Cloudy | 1 mph E | 10% |
| Friday | 69°F | Partly Sunny | 1 to 5 mph E | 10% |
| Friday Night | 56°F | Mostly Cloudy | 2 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mystic, IA
Last spring frost
Apr 18
First fall frost
Oct 23
Growing season
187 days
Hardiness zone
5b
Explore more for Mystic, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Rathbun Dam, Ia (3.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.