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Onion Park SNOTEL

No snow sat on the pillow at Onion Park at the start of October 4, 2026. The NRCS median first snow is October 30, and the median peak is 15.6 in around April 26.

as of

All values are from the start of the day, midnight Pacific Standard Time

Last 8 days

Start-of-day readings for Onion Park, last 8 days.
DateSWEMedianPercentDepthPrecip since Oct 1
Oct 40.0 inches0.0 inches0 inches1.4 inches
Oct 30.0 inches0.0 inches0 inches1.4 inches
Oct 20.0 inches0.0 inches0 inches0.0 inches
Oct 10.0 inches0.0 inches0 inches0.0 inches
Sep 300.0 inches0.0 inches0 inches33.4 inches
Sep 290.0 inches0.0 inches0 inches33.2 inches
Sep 280.0 inches0.0 inches0 inches33.4 inches
Sep 270.0 inches0.0 inches0 inches33.1 inches

The Natural Resources Conservation Service (USDA) created the figures on this page, which are works of the US government and therefore have no copyright under 17 U.S.C. 105. The notice that 17 U.S.C. 403 requires appears in this sentence. Neither NRCS nor USDA endorses or is affiliated with WeatherTotals. See: Data sources and attribution.

Records at Onion Park

Record values for Onion Park, from daily snowpack history.
Highest SWE on record22.2 inches, May 11, 2011
Deepest snow on record75 inches, May 1, 2010
Biggest season peak22.2 in, 2010-11 season, on May 11, 2011
Smallest season peak11.5 in, 2016-17 season, on May 3, 2017
Last season's peak11.9 in, 2025-26 season, on March 17, 2026

25 complete water years in the record, daily SWE since September 13, 2001

Station details

Elevation7,420 ft
CountyMeagher
Position46.9135, -110.8536
Record startsOctober 1, 1992
Median peak SWE15.6 in around April 26
Median first snowOctober 30
Median melt-outJune 5
NRCS station ID1008:MT:SNTL

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