What was the temperature at Idaho City on 1964-04-21?

On 1964-04-21, the daily high at Idaho City (Boise Basin, 3,970 ft, Boise County, Idaho) was 57°F and the daily low was 27°F. Source: NOAA GHCND. Pipeline: idahocity-weather-v2.0.0.

Idaho City Weather — April 21, 1964

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

On 1964-04-21 at Idaho City (Boise Basin, 3,970 ft elevation, Boise County, Idaho), the daily high temperature was 57°F and the daily low was 27°F, a diurnal range of 30°F. Season: Spring. Day 112 of 1964. This date recorded a hard freeze (low ≤ 28°F) during the growing season.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: b56fba757f358e6e · Hash: 2a8976ed96e49799

57°F

Daily High (TMAX)

27°F

Daily Low (TMIN)

30°F

Temp Range

Graph Edges

◈ Primary Source Record · NOAA GHCND · Tier 1

Station

Idaho City

GHCND ID

USC00104442

Date

1964-04-21 · Spring · Day 112 of 1964

High (TMAX)

57°F

Low (TMIN)

27°F

Range

30°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

b56fba757f358e6e

Content Hash

2a8976ed96e49799

Ingested

2026-07-25T14:45:07 UTC

Pipeline

idahocity-weather-v2.0.0

◈ Graph Edges — 3 Connections · Tier 2 · Deterministic

WEATHER_CROSS_STATION

1964-04-21 | KBOI(860.5m) → USC00104442(1207.0m) | Δelev=346m

conf=0.92 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Idaho City · 1964-04-20 · Hi:60°F Lo:23°F

conf=1.00 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Idaho City · 1964-04-22 · Hi:49°F Lo:31°F

conf=1.00 · tier-2 · deterministic

Idaho City — April 21, 1964HARD FREEZE