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Idaho City
Boise County · Est. 1862
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Annual Summary · Boise Basin · NOAA GHCND

Idaho City — 1999

Idaho City · 3,970 ft · Boise County, Idaho

60°F
Avg High
28°F
Avg Low
99°F
Year Max
-4°F
Year Min
◈ Monthly Breakdown — 1999
January
Avg Hi: 37°F Avg Lo: 17°F 31 days
February
Avg Hi: 37°F Avg Lo: 14°F 28 days
March
Avg Hi: 48°F Avg Lo: 20°F 31 days
April
Avg Hi: 53°F Avg Lo: 26°F 30 days
May
Avg Hi: 65°F Avg Lo: 31°F 31 days
June
Avg Hi: 74°F Avg Lo: 41°F 29 days
July
Avg Hi: 86°F Avg Lo: 41°F 31 days
August
Avg Hi: 88°F Avg Lo: 45°F 28 days
September
Avg Hi: 77°F Avg Lo: 32°F 30 days
October
Avg Hi: 68°F Avg Lo: 25°F 30 days
November
Avg Hi: 52°F Avg Lo: 25°F 30 days
December
Avg Hi: 36°F Avg Lo: 15°F 31 days
◈ Source Record
Station
Idaho City · USC00104442
Year
1999 · 360 days of records
Elevation
3,970 ft · 1210m
Source
NOAA GHCND — CDO API ↗
Pipeline
idahocity-weather-v2.0.0 · 2026-07-25
← All Years ← All Stations
◈ Provenance · Sources · Knowledge Graph Context
Every Source. Declared. Permanent.
Authoritative Sources
🌦️NOAA GHCND — Climate Data Online↗ ◈Boise Standard · Idaho City↗ 🏛️Boise County Official↗ 🤝Idaho City Chamber of Commerce↗ 🗺️Visit Southwest Idaho↗ 📊U.S. Census · Idaho City↗ 📚Britannica · Idaho City↗ 🏺Idaho City Historical Foundation↗
Wikipedia · Geographic Context
🏙️Idaho City, Idaho↗ 📍Boise County, Idaho↗ 🌿Garden Valley, Idaho↗ 🌲Lowman, Idaho↗ 🏔️Boise, Idaho↗
Wikipedia · Region & Federal Land
🌲Boise National Forest↗ 🛣️Ponderosa Pine Scenic Byway↗ 🏕️Frank Church Wilderness↗ ⛰️Sawtooth National Forest↗ 🏞️South Fork Payette River↗