St. Olaf, IA Weather & Growing Conditions
Today
79°F
Chance Rain Showers
A chance of rain showers between 9am and 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers and thunderstorms likely. Mostly cloudy. High near 79, with temperatures falling to around 75 in the afternoon. Southwest wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Chance Rain Showers | 8 mph SW | 57% |
| Tonight | 61°F | Showers And Thunderstorms | 6 mph NW | 86% |
| Wednesday | 75°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 3 mph NW | 23% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 3 mph NW | 5% |
| Thursday | 79°F | Sunny | 2 mph SE | 3% |
| Thursday Night | 58°F | Mostly Clear | 1 mph S | 0% |
| Friday | 82°F | Sunny | 1 to 8 mph S | 5% |
| Friday Night | 63°F | Mostly Clear | 3 to 7 mph S | 10% |
| Saturday | 84°F | Mostly Sunny | 3 to 7 mph SW | 10% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 8 mph S | 31% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 10 mph S | 31% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 7 mph S | 41% |
| Monday | 84°F | Chance Showers And Thunderstorms | 8 mph S | 41% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph NE | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Olaf, IA
Last spring frost
May 8
First fall frost
Oct 1
Growing season
146 days
Hardiness zone
5a
Explore more for St. Olaf, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Elkader 6 Ssw, Ia (10.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.