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

Boise Foothills — April 22, 1975FROST EVENT

WEATHER RECORD · BOISE FOOTHILLS · 1975-04-22 · boise-standard-weather-v1.0.0
HI 62°F · LO 35°F · RNG 27°F · 3 edges
62°F Daily High (TMAX)
35°F Daily Low (TMIN)
27°F Temp Range · Spring
3 Graph Edges
◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I c998815528b2e116
STATION Boise 7 N (Foothills)
GHCND ID USC00101017
DATE 1975-04-22 · Spring · Day 112 of 1975
TMAX 62°F
TMIN 35°F
TRANGE 27°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 c998815528b2e116
INGESTED 2026-07-14T16:30:48 UTC
PIPELINE boise-standard-weather-v1.0.0
CONTENT HASH f86d7cf023a5c91d
◈ 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 — 1975 is year 3 of record
◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 1975-04-22 at Boise 7 N (Foothills) (Foothills Margin, ada, 1184.1m elevation), the daily high temperature was 62°F and the daily low was 35°F, a diurnal range of 27°F. Season: Spring. Day 112 of 1975. 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: c998815528b2e116.

◈ GRAPH EDGES — 3 CONNECTIONSDETERMINISTIC · TIER 2
WEATHER_CROSS_STATION KBOI · 1975-04-22 · High: 67°F Low: 43°F · Elev: 860.5m · conf=0.91 · T2·DET
WEATHER_TEMPORAL_SERIES Boise Foothills · 1975-04-21 · High: 61°F Low: 37°F · conf=1.00 · T2·DET
WEATHER_TEMPORAL_SERIES Boise Foothills · 1975-04-23 · High: 56°F Low: 33°F · conf=1.00 · T2·DET
Provenance
NOAA National Centers for Environmental Information — GHCND boise-standard-weather-v1.0.0 c998815528b2e116 /treasure-valley/data/weather/boise-foothills/1975/04/22/ f86d7cf023a5c91d