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

Idaho City — September 23, 1956HARD 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 1956-09-23 at Idaho City (Boise Basin, 3,970 ft elevation, Boise County, Idaho), the daily high temperature was 77°F and the daily low was 20°F, a diurnal range of 57°F. Season: Fall. Day 267 of 1956. This date recorded a hard freeze (low ≤ 28°F) during the growing season.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: a72f25141a006f9b · Hash: a83bbee4696a27fc
77°F
Daily High (TMAX)
20°F
Daily Low (TMIN)
57°F
Temp Range
3
Graph Edges
◈ Primary Source Record · NOAA GHCND · Tier 1
Station
Idaho City
GHCND ID
USC00104442
Date
1956-09-23 · Fall · Day 267 of 1956
High (TMAX)
77°F
Low (TMIN)
20°F
Range
57°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
a72f25141a006f9b
Content Hash
a83bbee4696a27fc
Ingested
2026-07-25T14:45:07 UTC
Pipeline
idahocity-weather-v2.0.0
◈ Graph Edges — 3 Connections · Tier 2 · Deterministic
WEATHER_CROSS_STATION
1956-09-23 | KBOI(860.5m) → USC00104442(1207.0m) | Δelev=346m
conf=0.92 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Idaho City · 1956-09-22 · Hi:70°F Lo:19°F
conf=1.00 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Idaho City · 1956-09-24 · Hi:82°F Lo:23°F
conf=1.00 · tier-2 · deterministic
◈ Provenance · Sources · Knowledge Graph Context
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