What was the temperature at Arrowrock Dam on 1978-04-18?

On 1978-04-18, the daily high at Arrowrock Dam (Boise River Basin, 3,241 ft, Boise County, Idaho) was 48°F and the daily low was 30°F. Source: NOAA GHCND. Pipeline: idahocity-weather-v2.0.0.

Arrowrock Dam Weather — April 18, 1978

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

On 1978-04-18 at Arrowrock Dam (Boise River Basin, 3,241 ft elevation, Boise County, Idaho), the daily high temperature was 48°F and the daily low was 30°F, a diurnal range of 18°F. Season: Spring. Day 108 of 1978. This date recorded a frost event (low ≤ 36°F) during the growing season.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: e4a5b450bcbac04f · Hash: a720cf78668a7abe

48°F

Daily High (TMAX)

30°F

Daily Low (TMIN)

18°F

Temp Range

Graph Edges

◈ Primary Source Record · NOAA GHCND · Tier 1

Station

Arrowrock Dam

GHCND ID

USC00100448

Date

1978-04-18 · Spring · Day 108 of 1978

High (TMAX)

48°F

Low (TMIN)

30°F

Range

18°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

e4a5b450bcbac04f

Content Hash

a720cf78668a7abe

Ingested

2026-07-25T14:45:12 UTC

Pipeline

idahocity-weather-v2.0.0

◈ Graph Edges — 3 Connections · Tier 2 · Deterministic

WEATHER_CROSS_STATION

1978-04-18 | KBOI(860.5m) → USC00100448(988.0m) | Δelev=128m

conf=0.81 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1978-04-17 · Hi:44°F Lo:32°F

conf=1.00 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1978-04-19 · Hi:58°F Lo:32°F

conf=1.00 · tier-2 · deterministic

Arrowrock Dam — April 18, 1978FROST EVENT