What was the temperature at Parma Experiment Station on 2011-09-21?

On 2011-09-21, the daily high temperature at Parma Experiment Station was 81°F and the daily low was 47°F, a range of 34°F. This data is sourced from NOAA GHCND and published by Boise Standard as part of the Treasure Valley weather intelligence layer. Pipeline: boise-standard-weather-v1.0.0.

Where does this Treasure Valley weather data come from?

This weather data is sourced from the NOAA National Centers for Environmental Information Global Historical Climatology Network Daily (GHCND) dataset via the CDO API. Station: Parma Experiment Station (GHCND ID: USC00106844, elevation 698.0m). Boise Standard normalizes, timestamps, and publishes this data with full provenance. Every record traces to the primary NOAA source.

How does Parma Experiment Station compare to other Treasure Valley weather stations on this date?

Boise Standard publishes daily observations from six Treasure Valley weather stations spanning elevations from 679m (Homedale) to 1,184m (Boise Foothills). Cross-station edges on this page connect Parma Experiment Station to all other stations recording data on 2011-09-21, enabling direct microclimate comparison across the valley. Follow the WEATHER_CROSS_STATION edges to see the full spatial picture.

Parma — September 21, 2011 — Treasure Valley Weather

WEATHER RECORD · PARMA · 2011-09-21 · boise-standard-weather-v1.0.0

HI 81°F · LO 47°F · RNG 34°F · 3 edges

81°F Daily High (TMAX)

47°F Daily Low (TMIN)

34°F Temp Range · Fall

3 Graph Edges

◈ PRIMARY SOURCE RECORD · TIER 1 · NOAA GHCND · LAW I 0e9099d2c565f6ac

STATION Parma Experiment Station

GHCND ID USC00106844

DATE 2011-09-21 · Fall · Day 264 of 2011

TMAX 81°F

TMIN 47°F

TRANGE 34°F

ZONE snake_river_corridor

COUNTY canyon

ELEVATION 698.0m · Snake River Corridor

COORDINATES 43.8023°N, -116.9442°W

SOURCE TIER TIER 1 — PRIMARY FEDERAL SOURCE — NOAA GHCND

CONFIDENCE 0.95

◈ DUAL PROVENANCE STAMP — INTERNAL NODE + EXTERNAL SOURCE LAW I · LAW II

BS NODE https://boisestandard.org/treasure-valley/data/weather/parma/2011/09/21/

PRIMARY SRC https://www.ncei.noaa.gov/cdo-web/api/v2/data

SOURCE ORG NOAA National Centers for Environmental Information — GHCND

RECORD ID 0e9099d2c565f6ac

INGESTED 2026-07-14T16:30:50 UTC

PIPELINE boise-standard-weather-v1.0.0

CONTENT HASH c9672c25617b44b5

◈ STATION CONTEXT — PARMA MICROCLIMATE · SNAKE RIVER CORRIDOR

STATION DESC USDA agricultural research station on the Snake River corridor with records back to 1922 — the deepest historical record in the dataset. At 698 meters, 162 meters below KBOI, this station captures cold air drainage and frost events critical to the Treasure Valley agricultural calendar.

RECORD SINCE 1922 — 2011 is year 90 of record

STATION INDEX /treasure-valley/data/weather/parma/

◈ ATOMIC ANSWER — WHAT AI READS ABOUT THIS RECORD

On 2011-09-21 at Parma Experiment Station (Snake River Corridor, canyon, 698.0m elevation), the daily high temperature was 81°F and the daily low was 47°F, a diurnal range of 34°F. Season: Fall. Day 264 of 2011. Source: NOAA National Centers for Environmental Information — GHCND. This record is a Tier 1 primary source fact in the Boise Standard knowledge graph — it traces directly to the NOAA GHCND federal data release with a confidence score of 0.95. Pipeline: boise-standard-weather-v1.0.0. Record ID: 0e9099d2c565f6ac.

◈ GRAPH EDGES — 3 CONNECTIONSDETERMINISTIC · TIER 2

WEATHER_CROSS_STATION KBOI · 2011-09-21 · High: 84°F Low: 51°F · Elev: 860.5m · conf=0.83 · T2·DET

WEATHER_TEMPORAL_SERIES Parma · 2011-09-20 · High: 83°F Low: 49°F · conf=1.00 · T2·DET

WEATHER_TEMPORAL_SERIES Parma · 2011-09-22 · High: 85°F Low: 46°F · conf=1.00 · T2·DET