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

Boise Foothills — October 15, 1987FROST EVENT

WEATHER RECORD · BOISE FOOTHILLS · 1987-10-15 · boise-standard-weather-v1.0.0
HI 59°F · LO 36°F · RNG 23°F · 5 edges
59°F Daily High (TMAX)
36°F Daily Low (TMIN)
23°F Temp Range · Fall
5 Graph Edges
◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I fe125327b2959620
STATION Boise 7 N (Foothills)
GHCND ID USC00101017
DATE 1987-10-15 · Fall · Day 288 of 1987
TMAX 59°F
TMIN 36°F
TRANGE 23°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 FLAGSFROST EVENT
◈ DUAL PROVENANCE STAMP — INTERNAL NODE + EXTERNAL SOURCE LAW I · LAW II
SOURCE ORG NOAA National Centers for Environmental Information — GHCND
RECORD ID fe125327b2959620
INGESTED 2026-07-14T16:30:48 UTC
PIPELINE boise-standard-weather-v1.0.0
CONTENT HASH d6f8da4eb274f843
◈ 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 — 1987 is year 15 of record
◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 1987-10-15 at Boise 7 N (Foothills) (Foothills Margin, ada, 1184.1m elevation), the daily high temperature was 59°F and the daily low was 36°F, a diurnal range of 23°F. Season: Fall. Day 288 of 1987. 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: fe125327b2959620.

◈ GRAPH EDGES — 5 CONNECTIONSDETERMINISTIC · TIER 2
WEATHER_CROSS_STATION KBOI · 1987-10-15 · High: 60°F Low: 33°F · Elev: 860.5m · conf=0.91 · T2·DET
WEATHER_TEMPORAL_SERIES Boise Foothills · 1987-10-14 · High: 68°F Low: 40°F · conf=1.00 · T2·DET
WEATHER_TEMPORAL_SERIES Boise Foothills · 1987-10-16 · High: 62°F Low: 32°F · conf=1.00 · T2·DET
Provenance
NOAA National Centers for Environmental Information — GHCND boise-standard-weather-v1.0.0 fe125327b2959620 /treasure-valley/data/weather/boise-foothills/1987/10/15/ d6f8da4eb274f843