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Weather Intelligence · Canyon Floor · boise-standard-weather-v1.0.0

Deer Flat — September 30, 1954FROST EVENT

WEATHER RECORD · DEER FLAT · 1954-09-30 · boise-standard-weather-v1.0.0
HI 62°F · LO 29°F · RNG 33°F · 4 edges
62°F Daily High (TMAX)
29°F Daily Low (TMIN)
33°F Temp Range · Fall
4 Graph Edges
◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I 84b533c3e8757e0a
STATION Deer Flat Dam
GHCND ID USC00102444
DATE 1954-09-30 · Fall · Day 273 of 1954
TMAX 62°F
TMIN 29°F
TRANGE 33°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 FLAGSFROST EVENT
◈ DUAL PROVENANCE STAMP — INTERNAL NODE + EXTERNAL SOURCE LAW I · LAW II
SOURCE ORG NOAA National Centers for Environmental Information — GHCND
RECORD ID 84b533c3e8757e0a
INGESTED 2026-07-14T16:30:54 UTC
PIPELINE boise-standard-weather-v1.0.0
CONTENT HASH 2e602729d7d9608a
◈ STATION CONTEXT — DEER FLAT MICROCLIMATE · CANYON FLOOR
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 — 1954 is year 39 of record
◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 1954-09-30 at Deer Flat Dam (Canyon Floor, canyon, 765.0m elevation), the daily high temperature was 62°F and the daily low was 29°F, a diurnal range of 33°F. Season: Fall. Day 273 of 1954. This date recorded a frost event (tmin ≤ 36°F during growing season). 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: 84b533c3e8757e0a.

◈ GRAPH EDGES — 4 CONNECTIONSDETERMINISTIC · TIER 2
WEATHER_CROSS_STATION KBOI · 1954-09-30 · High: 59°F Low: 29°F · Elev: 860.5m · conf=0.80 · T2·DET
WEATHER_TEMPORAL_SERIES Deer Flat · 1954-09-29 · High: 58°F Low: 38°F · conf=1.00 · T2·DET
WEATHER_TEMPORAL_SERIES Deer Flat · 1954-10-01 · High: 65°F Low: 28°F · conf=1.00 · T2·DET
WEATHER_TO_AGRICULTURE Agriculture vertical anchor — frost/freeze event · conf=0.80 · T2·DET
Provenance
NOAA National Centers for Environmental Information — GHCND boise-standard-weather-v1.0.0 84b533c3e8757e0a /treasure-valley/data/weather/deer-flat-dam/1954/09/30/ 2e602729d7d9608a