What was the temperature at Arrowrock Dam on 1989-07-31?

On 1989-07-31, the daily high at Arrowrock Dam (Boise River Basin, 3,241 ft, Boise County, Idaho) was 99°F and the daily low was 58°F. Source: NOAA GHCND. Pipeline: idahocity-weather-v2.0.0.

Arrowrock Dam Weather — July 31, 1989

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

On 1989-07-31 at Arrowrock Dam (Boise River Basin, 3,241 ft elevation, Boise County, Idaho), the daily high temperature was 99°F and the daily low was 58°F, a diurnal range of 41°F. Season: Summer. Day 212 of 1989. This date recorded a heat event (high ≥ 95°F) at 3,241 ft.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: 6d2622ffbd063b25 · Hash: 8a153c2982429cf5

99°F

Daily High (TMAX)

58°F

Daily Low (TMIN)

41°F

Temp Range

Graph Edges

◈ Primary Source Record · NOAA GHCND · Tier 1

Station

Arrowrock Dam

GHCND ID

USC00100448

Date

1989-07-31 · Summer · Day 212 of 1989

High (TMAX)

99°F

Low (TMIN)

58°F

Range

41°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

6d2622ffbd063b25

Content Hash

8a153c2982429cf5

Ingested

2026-07-25T14:45:12 UTC

Pipeline

idahocity-weather-v2.0.0

◈ Graph Edges — 3 Connections · Tier 2 · Deterministic

WEATHER_CROSS_STATION

1989-07-31 | KBOI(860.5m) → USC00100448(988.0m) | Δelev=128m

conf=0.81 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1989-07-30 · Hi:101°F Lo:59°F

conf=1.00 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1989-08-01 · Hi:98°F Lo:60°F

conf=1.00 · tier-2 · deterministic

Arrowrock Dam — July 31, 1989HEAT EVENT