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Weather Intelligence · Foothills Margin · boise-standard-weather-v1.0.0

Boise Foothills — May 15, 1974HARD FREEZE

WEATHER RECORD · BOISE FOOTHILLS · 1974-05-15 · boise-standard-weather-v1.0.0
HI 53°F · LO 28°F · RNG 25°F · 5 edges
53°F Daily High (TMAX)
28°F Daily Low (TMIN)
25°F Temp Range · Spring
5 Graph Edges
◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I f4d551d01e7c5ebf
STATION Boise 7 N (Foothills)
GHCND ID USC00101017
DATE 1974-05-15 · Spring · Day 135 of 1974
TMAX 53°F
TMIN 28°F
TRANGE 25°F
ZONE foothills_margin
COUNTY ada
ELEVATION 1184.1m · Foothills Margin
COORDINATES 43.7383°N, -116.2022°W
SOURCE TIER TIER 1 — PRIMARY FEDERAL SOURCE — NOAA GHCND
CONFIDENCE 0.95
EVENT FLAGSHARD FREEZE
◈ DUAL PROVENANCE STAMP — INTERNAL NODE + EXTERNAL SOURCE LAW I · LAW II
SOURCE ORG NOAA National Centers for Environmental Information — GHCND
RECORD ID f4d551d01e7c5ebf
INGESTED 2026-07-14T16:30:48 UTC
PIPELINE boise-standard-weather-v1.0.0
CONTENT HASH 02d5db965d0a3baa
◈ STATION CONTEXT — BOISE FOOTHILLS MICROCLIMATE · FOOTHILLS MARGIN
STATION DESC Foothills station 324 meters above KBOI. Captures the Boise Front microclimate — cooler summers, deeper inversions, earlier frost dates than the valley floor. Critical for understanding the elevation gradient across the Treasure Valley.
RECORD SINCE 1973 — 1974 is year 2 of record
◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 1974-05-15 at Boise 7 N (Foothills) (Foothills Margin, ada, 1184.1m elevation), the daily high temperature was 53°F and the daily low was 28°F, a diurnal range of 25°F. Season: Spring. Day 135 of 1974. 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: f4d551d01e7c5ebf.

◈ GRAPH EDGES — 5 CONNECTIONSDETERMINISTIC · TIER 2
WEATHER_CROSS_STATION KBOI · 1974-05-15 · High: 53°F Low: 31°F · Elev: 860.5m · conf=0.91 · T2·DET
WEATHER_TEMPORAL_SERIES Boise Foothills · 1974-05-14 · High: 59°F Low: 33°F · conf=1.00 · T2·DET
WEATHER_TEMPORAL_SERIES Boise Foothills · 1974-05-16 · High: 54°F Low: 25°F · conf=1.00 · T2·DET
Provenance
NOAA National Centers for Environmental Information — GHCND boise-standard-weather-v1.0.0 f4d551d01e7c5ebf /treasure-valley/data/weather/boise-foothills/1974/05/15/ 02d5db965d0a3baa