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

Idaho City — October 30, 1991HARD 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 1991-10-30 at Idaho City (Boise Basin, 3,970 ft elevation, Boise County, Idaho), the daily high temperature was 35°F and the daily low was 10°F, a diurnal range of 25°F. Season: Fall. Day 303 of 1991. This date recorded a hard freeze (low ≤ 28°F) during the growing season.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: 86c549917e6559a9 · Hash: 6f24d2db0e440439
35°F
Daily High (TMAX)
10°F
Daily Low (TMIN)
25°F
Temp Range
4
Graph Edges
◈ Primary Source Record · NOAA GHCND · Tier 1
Station
Idaho City
GHCND ID
USC00104442
Date
1991-10-30 · Fall · Day 303 of 1991
High (TMAX)
35°F
Low (TMIN)
10°F
Range
25°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
86c549917e6559a9
Content Hash
6f24d2db0e440439
Ingested
2026-07-25T14:45:07 UTC
Pipeline
idahocity-weather-v2.0.0
◈ Graph Edges — 4 Connections · Tier 2 · Deterministic
WEATHER_CROSS_STATION
1991-10-30 | KBOI(860.5m) → USC00104442(1207.0m) | Δelev=346m
conf=0.92 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Idaho City · 1991-10-29 · Hi:38°F Lo:19°F
conf=1.00 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Idaho City · 1991-10-31 · Hi:37°F Lo:11°F
conf=1.00 · tier-2 · deterministic
WEATHER_EXTREME_EVENT
Phenomenon: phenomenon hard cold 1991
conf=0.99 · tier-2 · deterministic
◈ Provenance · Sources · Knowledge Graph Context
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