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

KBOI — October 08, 1990HARD FREEZE

WEATHER RECORD · KBOI · 1990-10-08 · boise-standard-weather-v1.0.0
HI 58°F · LO 28°F · RNG 30°F · 6 edges
58°F Daily High (TMAX)
28°F Daily Low (TMIN)
30°F Temp Range · Fall
6 Graph Edges
◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I 405bc224e15a5cd3
STATION Boise Air Terminal (KBOI)
GHCND ID USW00024131
DATE 1990-10-08 · Fall · Day 281 of 1990
TMAX 58°F
TMIN 28°F
TRANGE 30°F
ZONE valley_floor
COUNTY ada
ELEVATION 860.5m · Valley Floor
COORDINATES 43.56705°N, -116.24062°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 405bc224e15a5cd3
INGESTED 2026-07-14T16:30:44 UTC
PIPELINE boise-standard-weather-v1.0.0
CONTENT HASH 26794e4f8dce6501
◈ STATION CONTEXT — KBOI MICROCLIMATE · VALLEY FLOOR
STATION DESC The primary NWS observation station for the Treasure Valley. Boise Airport (KBOI) has recorded daily temperature since 1940, making it the longest continuous climate record in the region. Sits at 860 meters on the valley floor.
RECORD SINCE 1940 — 1990 is year 51 of record
◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 1990-10-08 at Boise Air Terminal (KBOI) (Valley Floor, ada, 860.5m elevation), the daily high temperature was 58°F and the daily low was 28°F, a diurnal range of 30°F. Season: Fall. Day 281 of 1990. 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: 405bc224e15a5cd3.

◈ GRAPH EDGES — 6 CONNECTIONSDETERMINISTIC · TIER 2
WEATHER_CROSS_STATION Boise Foothills · 1990-10-08 · High: 55°F Low: 28°F · Elev: 1184.1m · conf=0.91 · T2·DET
WEATHER_CROSS_STATION Parma · 1990-10-08 · High: 59°F Low: 21°F · Elev: 698.0m · conf=0.83 · T2·DET
WEATHER_CROSS_STATION Deer Flat · 1990-10-08 · High: 60°F Low: 31°F · Elev: 765.0m · conf=0.80 · T2·DET
WEATHER_CROSS_STATION Homedale · 1990-10-08 · High: 56°F Low: 28°F · Elev: 679.7m · conf=0.84 · T2·DET
WEATHER_TEMPORAL_SERIES KBOI · 1990-10-07 · High: 55°F Low: 24°F · conf=1.00 · T2·DET
WEATHER_TEMPORAL_SERIES KBOI · 1990-10-09 · High: 69°F Low: 36°F · conf=1.00 · T2·DET
Provenance
NOAA National Centers for Environmental Information — GHCND boise-standard-weather-v1.0.0 405bc224e15a5cd3 /treasure-valley/data/weather/kboi/1990/10/08/ 26794e4f8dce6501