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

Deer Flat — December 09, 2009

WEATHER RECORD · DEER FLAT · 2009-12-09 · boise-standard-weather-v1.0.0
HI 18°F · LO -4°F · RNG 22°F · 4 edges
18°F Daily High (TMAX)
-4°F Daily Low (TMIN)
22°F Temp Range · Winter
4 Graph Edges
◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I b386bd7a2c970b2a
STATION Deer Flat Dam
GHCND ID USC00102444
DATE 2009-12-09 · Winter · Day 343 of 2009
TMAX 18°F
TMIN -4°F
TRANGE 22°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
◈ DUAL PROVENANCE STAMP — INTERNAL NODE + EXTERNAL SOURCE LAW I · LAW II
SOURCE ORG NOAA National Centers for Environmental Information — GHCND
RECORD ID b386bd7a2c970b2a
INGESTED 2026-07-14T16:30:54 UTC
PIPELINE boise-standard-weather-v1.0.0
CONTENT HASH 979495e189bc4424
◈ 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 — 2009 is year 94 of record
◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 2009-12-09 at Deer Flat Dam (Canyon Floor, canyon, 765.0m elevation), the daily high temperature was 18°F and the daily low was -4°F, a diurnal range of 22°F. Season: Winter. Day 343 of 2009. 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: b386bd7a2c970b2a.

◈ GRAPH EDGES — 4 CONNECTIONSDETERMINISTIC · TIER 2
WEATHER_CROSS_STATION KBOI · 2009-12-09 · High: 16°F Low: -4°F · Elev: 860.5m · conf=0.80 · T2·DET
WEATHER_TEMPORAL_SERIES Deer Flat · 2009-12-08 · High: 19°F Low: 0°F · conf=1.00 · T2·DET
WEATHER_TEMPORAL_SERIES Deer Flat · 2009-12-10 · High: 16°F Low: -3°F · conf=1.00 · T2·DET
WEATHER_EXTREME_EVENT Phenomenon node: phenomenon hard cold 2009 · conf=0.99 · T2·DET
Provenance
NOAA National Centers for Environmental Information — GHCND boise-standard-weather-v1.0.0 b386bd7a2c970b2a /treasure-valley/data/weather/deer-flat-dam/2009/12/09/ 979495e189bc4424