What was the temperature at Idaho City on 1990-12-21?

On 1990-12-21, the daily high at Idaho City (Boise Basin, 3,970 ft, Boise County, Idaho) was 5°F and the daily low was -18°F. Source: NOAA GHCND. Pipeline: idahocity-weather-v2.0.0.

Idaho City Weather — December 21, 1990

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

On 1990-12-21 at Idaho City (Boise Basin, 3,970 ft elevation, Boise County, Idaho), the daily high temperature was 5°F and the daily low was -18°F, a diurnal range of 23°F. Season: Winter. Day 355 of 1990.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: 1fed06933f605c11 · Hash: 9b020a263f002989

5°F

Daily High (TMAX)

-18°F

Daily Low (TMIN)

23°F

Temp Range

Graph Edges

◈ Primary Source Record · NOAA GHCND · Tier 1

Station

Idaho City

GHCND ID

USC00104442

Date

1990-12-21 · Winter · Day 355 of 1990

High (TMAX)

5°F

Low (TMIN)

-18°F

Range

23°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

1fed06933f605c11

Content Hash

9b020a263f002989

Ingested

2026-07-25T14:45:07 UTC

Pipeline

idahocity-weather-v2.0.0

◈ Graph Edges — 4 Connections · Tier 2 · Deterministic

WEATHER_CROSS_STATION

1990-12-21 | KBOI(860.5m) → USC00104442(1207.0m) | Δelev=346m

conf=0.92 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Idaho City · 1990-12-20 · Hi:26°F Lo:2°F

conf=1.00 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Idaho City · 1990-12-22 · Hi:0°F Lo:-32°F

conf=1.00 · tier-2 · deterministic

WEATHER_EXTREME_EVENT

Phenomenon: phenomenon hard cold 1990

conf=0.99 · tier-2 · deterministic

Idaho City — December 21, 1990