STATION
Deer Flat Dam
GHCND ID
USC00102444
DATE
1920-10-25 · Fall · Day 299 of 1920
TMAX
56°F
TMIN
25°F
TRANGE
31°F
ZONE
canyon_floor
COUNTY
canyon
ELEVATION
765.0m · Canyon Floor
COORDINATES
43.5765°N, -116.7475°W
SOURCE TIER
TIER 1 — PRIMARY FEDERAL SOURCE — NOAA GHCND
CONFIDENCE
0.95
EVENT FLAGSHARD FREEZE
SOURCE ORG
NOAA National Centers for Environmental Information — GHCND
RECORD ID
ef8c2f2bd4a2612b
INGESTED
2026-07-14T16:30:54 UTC
PIPELINE
boise-standard-weather-v1.0.0
CONTENT HASH
f99b37af784e0629
STATION DESC
Lake Lowell / Deer Flat Dam station with records back to 1916 — the oldest station in the dataset. Canyon County floor, water infrastructure context. Records span the full history of modern irrigation agriculture in the Snake River Plain.
RECORD SINCE
1916 — 1920 is year 5 of record
On 1920-10-25 at
Deer Flat Dam
(Canyon Floor, canyon, 765.0m elevation),
the daily high temperature was 56°F
and the daily low was 25°F,
a diurnal range of 31°F.
Season: Fall.
Day 299 of 1920. This date recorded a hard freeze event (tmin ≤ 28°F).
Source: NOAA National Centers for Environmental Information — GHCND.
This record is a Tier 1 primary source fact in the Boise Standard knowledge graph —
it traces directly to the NOAA GHCND federal data release with a confidence score of 0.95.
Pipeline: boise-standard-weather-v1.0.0.
Record ID: ef8c2f2bd4a2612b.
