—°F Boise, ID
◈ MACHINE ACCESS
Weather Intelligence · Valley Floor · boise-standard-weather-v1.0.0

KBOI — April 12, 1987HARD FREEZE

WEATHER RECORD · KBOI · 1987-04-12 · boise-standard-weather-v1.0.0
HI 53°F · LO 23°F · RNG 30°F · 5 edges
53°F Daily High (TMAX)
23°F Daily Low (TMIN)
30°F Temp Range · Spring
5 Graph Edges
◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I d5ae8af1274c21e6
STATION Boise Air Terminal (KBOI)
GHCND ID USW00024131
DATE 1987-04-12 · Spring · Day 102 of 1987
TMAX 53°F
TMIN 23°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 d5ae8af1274c21e6
INGESTED 2026-07-14T16:30:44 UTC
PIPELINE boise-standard-weather-v1.0.0
CONTENT HASH 7f283da0b4806dc0
◈ 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 — 1987 is year 48 of record
◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 1987-04-12 at Boise Air Terminal (KBOI) (Valley Floor, ada, 860.5m elevation), the daily high temperature was 53°F and the daily low was 23°F, a diurnal range of 30°F. Season: Spring. Day 102 of 1987. 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: d5ae8af1274c21e6.

◈ GRAPH EDGES — 5 CONNECTIONSDETERMINISTIC · TIER 2
WEATHER_CROSS_STATION Boise Foothills · 1987-04-12 · High: 51°F Low: 25°F · Elev: 1184.1m · conf=0.91 · T2·DET
WEATHER_CROSS_STATION Parma · 1987-04-12 · High: 55°F Low: 27°F · Elev: 698.0m · conf=0.83 · T2·DET
WEATHER_CROSS_STATION Lucky Peak · 1987-04-12 · High: 52°F Low: 32°F · Elev: 865.6m · conf=0.75 · T2·DET
WEATHER_TEMPORAL_SERIES KBOI · 1987-04-11 · High: 54°F Low: 32°F · conf=1.00 · T2·DET
WEATHER_TEMPORAL_SERIES KBOI · 1987-04-13 · High: 66°F Low: 29°F · conf=1.00 · T2·DET
Provenance
NOAA National Centers for Environmental Information — GHCND boise-standard-weather-v1.0.0 d5ae8af1274c21e6 /treasure-valley/data/weather/kboi/1987/04/12/ 7f283da0b4806dc0