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Historical Weather · Boise River Basin · idahocity-weather-v2.0.0

Arrowrock Dam — October 20, 1984FROST EVENT

Arrowrock Dam · 3,241 ft · Boise River Basin · Boise County, Idaho

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

On 1984-10-20 at Arrowrock Dam (Boise River Basin, 3,241 ft elevation, Boise County, Idaho), the daily high temperature was 44°F and the daily low was 33°F, a diurnal range of 11°F. Season: Fall. Day 294 of 1984. This date recorded a frost event (low ≤ 36°F) during the growing season.

Source: NOAA National Centers for Environmental Information — GHCND · Record ID: 637a1a9ac92e10bd · Hash: 490526b786738b55
44°F
Daily High (TMAX)
33°F
Daily Low (TMIN)
11°F
Temp Range
3
Graph Edges
◈ Primary Source Record · NOAA GHCND · Tier 1
Station
Arrowrock Dam
GHCND ID
USC00100448
Date
1984-10-20 · Fall · Day 294 of 1984
High (TMAX)
44°F
Low (TMIN)
33°F
Range
11°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
637a1a9ac92e10bd
Content Hash
490526b786738b55
Ingested
2026-07-25T14:45:12 UTC
Pipeline
idahocity-weather-v2.0.0
◈ Graph Edges — 3 Connections · Tier 2 · Deterministic
WEATHER_CROSS_STATION
1984-10-20 | KBOI(860.5m) → USC00100448(988.0m) | Δelev=128m
conf=0.81 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Arrowrock Dam · 1984-10-19 · Hi:44°F Lo:27°F
conf=1.00 · tier-2 · deterministic
WEATHER_TEMPORAL_SERIES
Arrowrock Dam · 1984-10-21 · Hi:48°F Lo:30°F
conf=1.00 · tier-2 · deterministic
◈ Provenance · Sources · Knowledge Graph Context
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