STATION
Boise 7 N (Foothills)
GHCND ID
USC00101017
DATE
1991-05-09 · Spring · Day 129 of 1991
TMAX
51°F
TMIN
33°F
TRANGE
18°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
SOURCE ORG
NOAA National Centers for Environmental Information — GHCND
RECORD ID
74f195b49d1385cf
INGESTED
2026-07-14T16:30:48 UTC
PIPELINE
boise-standard-weather-v1.0.0
CONTENT HASH
42a8f4ed0fcb3e8a
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 — 1991 is year 19 of record
On 1991-05-09 at
Boise 7 N (Foothills)
(Foothills Margin, ada, 1184.1m elevation),
the daily high temperature was 51°F
and the daily low was 33°F,
a diurnal range of 18°F.
Season: Spring.
Day 129 of 1991. 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: 74f195b49d1385cf.
