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

Boise Foothills — April 21, 2008HARD FREEZE

WEATHER RECORD · BOISE FOOTHILLS · 2008-04-21 · boise-standard-weather-v1.0.0
HI 44°F · LO 21°F · RNG 23°F · 3 edges
44°F Daily High (TMAX)
21°F Daily Low (TMIN)
23°F Temp Range · Spring
3 Graph Edges
◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I c0020f8fb0eea78e
STATION Boise 7 N (Foothills)
GHCND ID USC00101017
DATE 2008-04-21 · Spring · Day 112 of 2008
TMAX 44°F
TMIN 21°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 FLAGSHARD FREEZE
◈ DUAL PROVENANCE STAMP — INTERNAL NODE + EXTERNAL SOURCE LAW I · LAW II
SOURCE ORG NOAA National Centers for Environmental Information — GHCND
RECORD ID c0020f8fb0eea78e
INGESTED 2026-07-14T16:30:48 UTC
PIPELINE boise-standard-weather-v1.0.0
CONTENT HASH 72b528c67a3ef87b
◈ 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 — 2008 is year 36 of record
◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 2008-04-21 at Boise 7 N (Foothills) (Foothills Margin, ada, 1184.1m elevation), the daily high temperature was 44°F and the daily low was 21°F, a diurnal range of 23°F. Season: Spring. Day 112 of 2008. 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: c0020f8fb0eea78e.

◈ GRAPH EDGES — 3 CONNECTIONSDETERMINISTIC · TIER 2
WEATHER_CROSS_STATION KBOI · 2008-04-21 · High: 49°F Low: 26°F · Elev: 860.5m · conf=0.91 · T2·DET
WEATHER_TEMPORAL_SERIES Boise Foothills · 2008-04-20 · High: 38°F Low: 23°F · conf=1.00 · T2·DET
WEATHER_TEMPORAL_SERIES Boise Foothills · 2008-04-22 · High: 60°F Low: 33°F · conf=1.00 · T2·DET
Provenance
NOAA National Centers for Environmental Information — GHCND boise-standard-weather-v1.0.0 c0020f8fb0eea78e /treasure-valley/data/weather/boise-foothills/2008/04/21/ 72b528c67a3ef87b