What was the temperature at Idaho City on 1991-09-15?

On 1991-09-15, the daily high at Idaho City (Boise Basin, 3,970 ft, Boise County, Idaho) was 66°F and the daily low was 30°F. Source: NOAA GHCND. Pipeline: idahocity-weather-v2.0.0.

Idaho City Weather — September 15, 1991

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

On 1991-09-15 at Idaho City (Boise Basin, 3,970 ft elevation, Boise County, Idaho), the daily high temperature was 66°F and the daily low was 30°F, a diurnal range of 36°F. Season: Fall. Day 258 of 1991. This date recorded a frost event (low ≤ 36°F) during the growing season.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: 35afef05021b2846 · Hash: d11753f81f69f2be

66°F

Daily High (TMAX)

30°F

Daily Low (TMIN)

36°F

Temp Range

Graph Edges

◈ Primary Source Record · NOAA GHCND · Tier 1

Station

Idaho City

GHCND ID

USC00104442

Date

1991-09-15 · Fall · Day 258 of 1991

High (TMAX)

66°F

Low (TMIN)

30°F

Range

36°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

35afef05021b2846

Content Hash

d11753f81f69f2be

Ingested

2026-07-25T14:45:07 UTC

Pipeline

idahocity-weather-v2.0.0

◈ Graph Edges — 5 Connections · Tier 2 · Deterministic

WEATHER_CROSS_STATION

1991-09-15 | KBOI(860.5m) → USC00104442(1207.0m) | Δelev=346m

conf=0.92 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Idaho City · 1991-09-14 · Hi:76°F Lo:35°F

conf=1.00 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Idaho City · 1991-09-16 · Hi:71°F Lo:30°F

conf=1.00 · tier-2 · deterministic

WEATHER_SEASONAL_PATTERN

Idaho City · 1990-09-15 · same month, consecutive year

conf=0.90 · tier-2 · deterministic

WEATHER_SEASONAL_PATTERN

Idaho City · 1992-09-15 · same month, consecutive year

conf=0.90 · tier-2 · deterministic

Idaho City — September 15, 1991FROST EVENT