Forecastable

[fawr-kast, -kahst, fohr-] /ˈfɔrˌkæst, -ˌkɑst, ˈfoʊr-/

verb (used with object), forecast or forecasted, forecasting.
1.
to predict (a future condition or occurrence); calculate in advance:
to forecast a heavy snowfall; to forecast lower interest rates.
2.
to serve as a prediction of; foreshadow.
3.
to contrive or plan beforehand; prearrange.
verb (used without object), forecast or forecasted, forecasting.
4.
to conjecture beforehand; make a prediction.
5.
to plan or arrange beforehand.
noun
6.
a prediction, especially as to the weather.
7.
a conjecture as to something in the future.
8.
the act, practice, or faculty of forecasting.
9.
Archaic. foresight in planning.
/ˈfɔːˌkɑːst/
verb -casts, -casting, -cast, -casted
1.
to predict or calculate (weather, events, etc), in advance
2.
(transitive) to serve as an early indication of
3.
(transitive) to plan in advance
noun
4.
a statement of probable future weather conditions calculated from meteorological data
5.
a prophecy or prediction
6.
the practice or power of forecasting
v.

late 14c., “to scheme,” from fore- “before” + casten “contrive.” Meaning “predict events” first attested late 15c. Related: Forecasted; forecasting.
n.

early 15c., probably from forecast (v.); earliest sense was “forethought, prudence;” meaning “conjectured estimate of a future course” is from 1670s. A Middle English word for weather forecasting was aeromancy.