STATION
Boise Air Terminal (KBOI)
GHCND ID
USW00024131
DATE
1999-09-27 · Fall · Day 270 of 1999
TMAX
59°F
TMIN
33°F
TRANGE
26°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 FLAGSFROST EVENT
SOURCE ORG
NOAA National Centers for Environmental Information — GHCND
RECORD ID
b2d0ae4ed28c76cd
INGESTED
2026-07-14T16:30:44 UTC
PIPELINE
boise-standard-weather-v1.0.0
CONTENT HASH
b7d94b71b4bc8548
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 — 1999 is year 60 of record
On 1999-09-27 at
Boise Air Terminal (KBOI)
(Valley Floor, ada, 860.5m elevation),
the daily high temperature was 59°F
and the daily low was 33°F,
a diurnal range of 26°F.
Season: Fall.
Day 270 of 1999. 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: b2d0ae4ed28c76cd.
