Public forecast
Using degrees Celsius for public forecast. Weather courtesy of Meteomatics.
Closest aviation weather report (METAR) to Granitehill Lake Seaplane Base
Report is more than 6 hours old.
Closest report is Marathon Airport, 49.7 nm (92.0 km) WSW.
2026/03/18 21:00 (retrieved 9 hours ago)
CYSP 182100Z 22005G15KT 4SM -SN OVC012 M05/M07 A2978 RMK SC8 /S02/ LAST STFD OBS/NEST 191200 SLP112
Closest aviation forecast (TAF) to Granitehill Lake Seaplane Base
Forecast is more than 6 hours old.
Closest forecast is Marathon Airport, 49.7 nm (92.0 km) WSW.
2026/03/18 20:00 Ammendment (retrieved 10 hours ago)
TAF AMD CYSP 182014Z 1820/1821 VRB03KT 6SM -SN SCT012 OVC025 TEMPO 1820/1821 2SM -SN BKN012 OVC020 RMK NXT FCST BY 191400Z