What was the temperature at Arrowrock Dam on 1991-08-21?

On 1991-08-21, the daily high at Arrowrock Dam (Boise River Basin, 3,241 ft, Boise County, Idaho) was 98°F and the daily low was 60°F. Source: NOAA GHCND. Pipeline: idahocity-weather-v2.0.0.

Arrowrock Dam Weather — August 21, 1991

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

On 1991-08-21 at Arrowrock Dam (Boise River Basin, 3,241 ft elevation, Boise County, Idaho), the daily high temperature was 98°F and the daily low was 60°F, a diurnal range of 38°F. Season: Summer. Day 233 of 1991. This date recorded a heat event (high ≥ 95°F) at 3,241 ft.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: 7109c30a64ce71c0 · Hash: 3dc29ec0715da57a

98°F

Daily High (TMAX)

60°F

Daily Low (TMIN)

38°F

Temp Range

Graph Edges

◈ Primary Source Record · NOAA GHCND · Tier 1

Station

Arrowrock Dam

GHCND ID

USC00100448

Date

1991-08-21 · Summer · Day 233 of 1991

High (TMAX)

98°F

Low (TMIN)

60°F

Range

38°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

7109c30a64ce71c0

Content Hash

3dc29ec0715da57a

Ingested

2026-07-25T14:45:12 UTC

Pipeline

idahocity-weather-v2.0.0

◈ Graph Edges — 3 Connections · Tier 2 · Deterministic

WEATHER_CROSS_STATION

1991-08-21 | KBOI(860.5m) → USC00100448(988.0m) | Δelev=128m

conf=0.81 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1991-08-20 · Hi:97°F Lo:59°F

conf=1.00 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1991-08-22 · Hi:92°F Lo:59°F

conf=1.00 · tier-2 · deterministic

Arrowrock Dam — August 21, 1991HEAT EVENT