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

Deer Flat — May 05, 1917FROST EVENT

WEATHER RECORD · DEER FLAT · 1917-05-05 · boise-standard-weather-v1.0.0
HI 62°F · LO 33°F · RNG 29°F · 3 edges
62°F Daily High (TMAX)
33°F Daily Low (TMIN)
29°F Temp Range · Spring
3 Graph Edges
◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I dfb2111eea2c2cfc
STATION Deer Flat Dam
GHCND ID USC00102444
DATE 1917-05-05 · Spring · Day 125 of 1917
TMAX 62°F
TMIN 33°F
TRANGE 29°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 dfb2111eea2c2cfc
INGESTED 2026-07-14T16:30:54 UTC
PIPELINE boise-standard-weather-v1.0.0
CONTENT HASH 47d7cbc2cefee9c1
◈ 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 — 1917 is year 2 of record
◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 1917-05-05 at Deer Flat Dam (Canyon Floor, canyon, 765.0m elevation), the daily high temperature was 62°F and the daily low was 33°F, a diurnal range of 29°F. Season: Spring. Day 125 of 1917. 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: dfb2111eea2c2cfc.

◈ GRAPH EDGES — 3 CONNECTIONSDETERMINISTIC · TIER 2
WEATHER_TEMPORAL_SERIES Deer Flat · 1917-05-04 · High: 68°F Low: 34°F · conf=1.00 · T2·DET
WEATHER_TEMPORAL_SERIES Deer Flat · 1917-05-07 · High: 72°F Low: 39°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 dfb2111eea2c2cfc /treasure-valley/data/weather/deer-flat-dam/1917/05/05/ 47d7cbc2cefee9c1