Weather in Mustio
Weather observations from FMI station Karjaa Kuusisto.
Temperature
| Date | Min °C | Max °C | Rain mm | Snow cm |
|---|
Source: Finnish Meteorological Institute, open data.
Weather data is not available.
Sum of Active Temperatures (SAT)
| Year | SAT (>10 °C) | Last spring frost | First autumn frost |
|---|
SAT is the total heat accumulated during the growing season: the sum of daily mean temperatures ((min + max) / 2) for days when the mean exceeds +10 °C. This is a key metric for variety selection.
Grapes
Grapes are a heat-demanding crop. The ripening period of a variety determines the required SAT:
- Very early: below 2500 °C
- Early: 2500–2600 °C
- Early-mid: 2600–2700 °C
- Mid-season: 2700–2800 °C
Apples
Apple trees are hardier and require less heat. Summer varieties manage with lower SAT values, while late varieties need 2500–2600 °C.
Data: Finnish Meteorological Institute, open data.