Sun Valley
ID · 9,150 ft summit · SUN
NWS Bias
2025–26 Season Snapshot
Storms This Season
12
storms tracked
Season Snowfall
3"
season total
Best Storm
25/100
Tracked
Current Snowpack
2"
489:ID:SNTL
Avg Daily Rate
0.4"/day
storms with data
Season SWE
0.1"
snow water equivalent
NWS Forecast Accuracy
Accuracy grade pending, and it stays that way on purpose. We show the raw NWS forecast for Sun Valley and do not grade or correct it. Six winters of NWS-against-SNOTEL checking found forecast accuracy here turns on an unresolved snow-measurement question (settled snow depth vs. fresh snowfall), not a fixed per-mountain bias anyone can honestly correct. So we show the number NWS publishes and tell you that is what it is.
SNOTEL ground truth (489:ID:SNTL)
Storm History — 2025–26 Season
Apr 24 – Apr 24
NWS Forecast
0.3"
Actual (SNOTEL)
0.0"
Density: Average
Rate: 0.6"/day
NWS accuracy: 0%
Apr 23 – Apr 23
NWS Forecast
0.1"
Actual (SNOTEL)
Pending
Density: Average
Rate: 0.2"/day
Apr 22 – Apr 23
NWS Forecast
0.7"
Actual (SNOTEL)
2.0"
Density: Dense
Rate: 1.3"/day
NWS accuracy: 0%
Show 9 more storms
Apr 17 – Apr 17
Level 1 · 0" forecast
Apr 16 – Apr 17
Level 1 · 0" forecast
Apr 15 – Apr 15
Level 1 · 0" forecast
Apr 13 – Apr 13
Level 1 · 0" forecast
Apr 3 – Apr 3
Level 1 · 0" forecast
Apr 2 – Apr 3
Level 1 · 0" forecast
Mar 31 – Mar 31
Level 1 · 0" forecast
Mar 12 – Mar 12
Level 1 · 0" forecast
Mar 11 – Mar 12
Level 1 · 0" forecast
Road & Access
Road conditions load in real-time — check back shortly.
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