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

Idaho City — September 15, 1969HARD FREEZE

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

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

On 1969-09-15 at Idaho City (Boise Basin, 3,970 ft elevation, Boise County, Idaho), the daily high temperature was 72°F and the daily low was 26°F, a diurnal range of 46°F. Season: Fall. Day 258 of 1969. This date recorded a hard freeze (low ≤ 28°F) during the growing season.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: fe91be794c5fae3f · Hash: b2cc92dc82b3051d
72°F
Daily High (TMAX)
26°F
Daily Low (TMIN)
46°F
Temp Range
5
Graph Edges
◈ Primary Source Record · NOAA GHCND · Tier 1
Station
Idaho City
GHCND ID
USC00104442
Date
1969-09-15 · Fall · Day 258 of 1969
High (TMAX)
72°F
Low (TMIN)
26°F
Range
46°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
fe91be794c5fae3f
Content Hash
b2cc92dc82b3051d
Ingested
2026-07-25T14:45:07 UTC
Pipeline
idahocity-weather-v2.0.0
◈ Graph Edges — 5 Connections · Tier 2 · Deterministic
WEATHER_CROSS_STATION
1969-09-15 | KBOI(860.5m) → USC00104442(1207.0m) | Δelev=346m
conf=0.92 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Idaho City · 1969-09-14 · Hi:75°F Lo:33°F
conf=1.00 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Idaho City · 1969-09-16 · Hi:75°F Lo:31°F
conf=1.00 · tier-2 · deterministic
WEATHER_SEASONAL_PATTERN
WEATHER_SEASONAL_PATTERN
◈ Provenance · Sources · Knowledge Graph Context
Every Source. Declared. Permanent.