IC
Idaho City
Boise County · Est. 1862
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Historical Weather · Boise Basin · idahocity-weather-v2.0.0

Idaho City — October 15, 1973FROST EVENT

Idaho City · 3,970 ft · Boise Basin · Boise County, Idaho

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

On 1973-10-15 at Idaho City (Boise Basin, 3,970 ft elevation, Boise County, Idaho), the daily high temperature was 75°F and the daily low was 35°F, a diurnal range of 40°F. Season: Fall. Day 288 of 1973. This date recorded a frost event (low ≤ 36°F) during the growing season.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: 1bfb5ad2f5f53bff · Hash: b8417500e7cc8f54
75°F
Daily High (TMAX)
35°F
Daily Low (TMIN)
40°F
Temp Range
5
Graph Edges
◈ Primary Source Record · NOAA GHCND · Tier 1
Station
Idaho City
GHCND ID
USC00104442
Date
1973-10-15 · Fall · Day 288 of 1973
High (TMAX)
75°F
Low (TMIN)
35°F
Range
40°F
Zone
Boise Basin
Elevation
3,970 ft · 1,210 m
Coordinates
43.8333°N, 115.8333°W
Geography
idaho_city
Source Tier
Tier 1 — Primary Federal Source — NOAA GHCND
Confidence
0.95
Record ID
1bfb5ad2f5f53bff
Content Hash
b8417500e7cc8f54
Ingested
2026-07-25T14:45:07 UTC
Pipeline
idahocity-weather-v2.0.0
◈ Graph Edges — 5 Connections · Tier 2 · Deterministic
WEATHER_CROSS_STATION
1973-10-15 | KBOI(860.5m) → USC00104442(1207.0m) | Δelev=346m
conf=0.92 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Idaho City · 1973-10-14 · Hi:75°F Lo:38°F
conf=1.00 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Idaho City · 1973-10-16 · Hi:75°F Lo:34°F
conf=1.00 · tier-2 · deterministic
WEATHER_SEASONAL_PATTERN
WEATHER_SEASONAL_PATTERN
◈ Provenance · Sources · Knowledge Graph Context
Every Source. Declared. Permanent.