What was the temperature at Arrowrock Dam on 1991-08-09?

On 1991-08-09, the daily high at Arrowrock Dam (Boise River Basin, 3,241 ft, Boise County, Idaho) was 103°F and the daily low was 56°F. Source: NOAA GHCND. Pipeline: idahocity-weather-v2.0.0.

Arrowrock Dam Weather — August 09, 1991

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

On 1991-08-09 at Arrowrock Dam (Boise River Basin, 3,241 ft elevation, Boise County, Idaho), the daily high temperature was 103°F and the daily low was 56°F, a diurnal range of 47°F. Season: Summer. Day 221 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: e35c646660de1d80 · Hash: b1d49ac954437f48

103°F

Daily High (TMAX)

56°F

Daily Low (TMIN)

47°F

Temp Range

Graph Edges

◈ Primary Source Record · NOAA GHCND · Tier 1

Station

Arrowrock Dam

GHCND ID

USC00100448

Date

1991-08-09 · Summer · Day 221 of 1991

High (TMAX)

103°F

Low (TMIN)

56°F

Range

47°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

e35c646660de1d80

Content Hash

b1d49ac954437f48

Ingested

2026-07-25T14:45:12 UTC

Pipeline

idahocity-weather-v2.0.0

◈ Graph Edges — 4 Connections · Tier 2 · Deterministic

WEATHER_CROSS_STATION

1991-08-09 | KBOI(860.5m) → USC00100448(988.0m) | Δelev=128m

conf=0.81 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1991-08-08 · Hi:97°F Lo:56°F

conf=1.00 · tier-2 · deterministic

WEATHER_TEMPORAL_SERIES

Arrowrock Dam · 1991-08-10 · Hi:83°F Lo:57°F

conf=1.00 · tier-2 · deterministic

WEATHER_EXTREME_EVENT

Phenomenon: phenomenon heat event 1991

conf=0.99 · tier-2 · deterministic

Arrowrock Dam — August 09, 1991HEAT EVENT