Wasco County Climate
Wasco County, Oregon
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
52.0°F
Annual Precip
13.8"
Annual Snowfall
13.5"
Extreme Heat Days
41
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
2,641
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Wasco County
Climate Verdict
Wasco County has a mild, with an average annual temperature of 52.0°F, arid conditions receiving just 13.8 inches of precipitation annually, occasional hot days — 41.400000000000006 per year above 90°F, light snow averaging 13.5 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 34.9°F. summers are warm — July averages 71.4°F. The 37°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 Wasco County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Wasco County closely matches the Oregon statewide average temperature of 50.5°F, it is also noticeably drier, receiving 23.7 inches less precipitation than the state average, the county experiences 18.062085576460586 more extreme heat days than the state average.
Climate Profile
About Wasco County Weather
A Bridge Between Coastal and Continental Climates
Wasco County’s 52.0°F average annual temperature sits just below the national median. This region experiences a semi-arid climate that serves as a transition zone between the wet coast and the dry interior.
Warmer and Drier Than the Oregon Average
At 52.0°F, the county is 1.5 degrees warmer than the Oregon state average of 50.5°F. It is significantly drier than the rest of the state, receiving only 13.8 inches of rain compared to the 37.4-inch state average.
A Drier Choice Than Western Neighbors
Wasco is far more arid than neighboring Hood River County to the west. While it shares a similar heat profile with Sherman County, its location near the Columbia Gorge creates unique wind and weather patterns.
Hot Summers and Snowy Winter Stints
Summers are intense with 41 days reaching 90°F or higher and a July average of 71.4°F. Residents also navigate a true winter, which brings 13.5 inches of annual snowfall and a December-February average of 36.0°F.
Prepare for Heat Waves and Winter Dustings
High-efficiency cooling is a must to handle the 41 annual extreme heat days. You should also keep snow tires or shovels ready for the 13.5 inches of snow that typically falls during the colder months.
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.