Harney County Climate
Harney County, Oregon
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
46.4°F
Annual Precip
11.3"
Annual Snowfall
35.9"
Extreme Heat Days
29
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
1,885
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Harney County
Climate Verdict
Harney County has a cool, averaging 46.4°F annually, arid conditions receiving just 11.3 inches of precipitation annually, occasional hot days — 29.12857142857143 per year above 90°F, moderate snowfall of 35.9 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 28.1°F. summers are pleasantly cool with July averaging 68.8°F. The 41°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Harney County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Harney County is 4.1°F cooler than the Oregon statewide average of 50.5°F, it is also noticeably drier, receiving 26.1 inches less precipitation than the state average.
Climate Profile
About Harney County Weather
Cold and Dry High Desert
Harney County is cold by national standards, with an average annual temperature of only 46.4°F. It is also exceptionally dry, recording just 11.3 inches of annual precipitation.
One of Oregon's Coldest Counties
At 46.4°F, the county is significantly cooler than the Oregon average of 50.5°F. It is also one of the driest parts of the state, receiving less than a third of the state average rainfall.
A Cold Peer to Deschutes
Harney's climate closely mirrors Deschutes County, which averages 46.0°F. Both counties represent the cold, arid nature of Oregon's high desert plateau.
Frigid Winters and Snowy Peaks
Winter is intense, with temperatures averaging 29.0°F and snowfall reaching 35.9 inches annually. Summers are warm with 29 days of heat over 90°F, though the overall summer average is 64.9°F.
Heavy Winter Prep is Required
Residents need high-performance heating systems and heavy winter gear to handle the sub-freezing winter average. Snow tires and plows are essential for managing the nearly 36 inches of annual snowfall.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.