What was the temperature at Idaho City on 1991-04-21?

On 1991-04-21, the daily high at Idaho City (Boise Basin, 3,970 ft, Boise County, Idaho) was 64°F and the daily low was 33°F. Source: NOAA GHCND. Pipeline: idahocity-weather-v2.0.0.

Idaho City Weather — April 21, 1991

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

On 1991-04-21 at Idaho City (Boise Basin, 3,970 ft elevation, Boise County, Idaho), the daily high temperature was 64°F and the daily low was 33°F, a diurnal range of 31°F. Season: Spring. Day 111 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: 3ceb8a074c93fec1 · Hash: cb5e143e1ae18c30

64°F

Daily High (TMAX)

33°F

Daily Low (TMIN)

31°F

Temp Range

Graph Edges

◈ Primary Source Record · NOAA GHCND · Tier 1

Station

Idaho City

GHCND ID

USC00104442

Date

1991-04-21 · Spring · Day 111 of 1991

High (TMAX)

64°F

Low (TMIN)

33°F

Range

31°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

3ceb8a074c93fec1

Content Hash

cb5e143e1ae18c30

Ingested

2026-07-25T14:45:07 UTC

Pipeline

idahocity-weather-v2.0.0

◈ Graph Edges — 3 Connections · Tier 2 · Deterministic

WEATHER_CROSS_STATION

1991-04-21 | KBOI(860.5m) → USC00104442(1207.0m) | Δelev=346m

conf=0.92 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Idaho City · 1991-04-20 · Hi:61°F Lo:27°F

conf=1.00 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Idaho City · 1991-04-22 · Hi:65°F Lo:31°F

conf=1.00 · tier-2 · deterministic

Idaho City — April 21, 1991FROST EVENT