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Historical Weather · Boise River Basin · idahocity-weather-v2.0.0

Arrowrock Dam — October 15, 1978FROST EVENT

Arrowrock Dam · 3,241 ft · Boise River Basin · Boise County, Idaho

◈ Atomic Answer · NOAA GHCND · Tier 1 Primary Source · idahocity-weather-v2.0.0

On 1978-10-15 at Arrowrock Dam (Boise River Basin, 3,241 ft elevation, Boise County, Idaho), the daily high temperature was 62°F and the daily low was 34°F, a diurnal range of 28°F. Season: Fall. Day 288 of 1978. This date recorded a frost event (low ≤ 36°F) during the growing season.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: c4940c37e0f163b8 · Hash: b70af7c95774ac6e
62°F
Daily High (TMAX)
34°F
Daily Low (TMIN)
28°F
Temp Range
5
Graph Edges
◈ Primary Source Record · NOAA GHCND · Tier 1
Station
Arrowrock Dam
GHCND ID
USC00100448
Date
1978-10-15 · Fall · Day 288 of 1978
High (TMAX)
62°F
Low (TMIN)
34°F
Range
28°F
Zone
Boise River Basin
Elevation
3,241 ft · 988 m
Coordinates
43.6°N, 115.9167°W
Geography
boise_county
Source Tier
Tier 1 — Primary Federal Source — NOAA GHCND
Confidence
0.95
Record ID
c4940c37e0f163b8
Content Hash
b70af7c95774ac6e
Ingested
2026-07-25T14:45:12 UTC
Pipeline
idahocity-weather-v2.0.0
◈ Graph Edges — 5 Connections · Tier 2 · Deterministic
WEATHER_CROSS_STATION
1978-10-15 | KBOI(860.5m) → USC00100448(988.0m) | Δelev=128m
conf=0.81 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Arrowrock Dam · 1978-10-14 · Hi:62°F Lo:34°F
conf=1.00 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Arrowrock Dam · 1978-10-16 · Hi:72°F Lo:35°F
conf=1.00 · tier-2 · deterministic
WEATHER_SEASONAL_PATTERN
WEATHER_SEASONAL_PATTERN
◈ Provenance · Sources · Knowledge Graph Context
Every Source. Declared. Permanent.