What was the temperature at Arrowrock Dam on 1999-12-20?

On 1999-12-20, the daily high at Arrowrock Dam (Boise River Basin, 3,241 ft, Boise County, Idaho) was 46°F and the daily low was 29°F. Source: NOAA GHCND. Pipeline: idahocity-weather-v2.0.0.

Arrowrock Dam Weather — December 20, 1999

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

On 1999-12-20 at Arrowrock Dam (Boise River Basin, 3,241 ft elevation, Boise County, Idaho), the daily high temperature was 46°F and the daily low was 29°F, a diurnal range of 17°F. Season: Winter. Day 354 of 1999.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: ee510434f9e04f74 · Hash: d5f21b1aae4008d7

46°F

Daily High (TMAX)

29°F

Daily Low (TMIN)

17°F

Temp Range

Graph Edges

◈ Primary Source Record · NOAA GHCND · Tier 1

Station

Arrowrock Dam

GHCND ID

USC00100448

Date

1999-12-20 · Winter · Day 354 of 1999

High (TMAX)

46°F

Low (TMIN)

29°F

Range

17°F

Zone

Boise River Basin

Elevation

3,241 ft · 988 m

Coordinates

43.6°N, 115.9167°W

Geography

boise_county

Source Tier

Tier 1 — Primary Federal Source — NOAA GHCND

Confidence

0.95

Record ID

ee510434f9e04f74

Content Hash

d5f21b1aae4008d7

Ingested

2026-07-25T14:45:12 UTC

Pipeline

idahocity-weather-v2.0.0

◈ Graph Edges — 3 Connections · Tier 2 · Deterministic

WEATHER_CROSS_STATION

1999-12-20 | KBOI(860.5m) → USC00100448(988.0m) | Δelev=128m

conf=0.81 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1999-12-17 · Hi:39°F Lo:32°F

conf=1.00 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1999-12-21 · Hi:46°F Lo:28°F

conf=1.00 · tier-2 · deterministic

Arrowrock Dam — December 20, 1999