Solano County Climate
Solano County, California
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
62.6°F
Annual Precip
25.0"
Annual Snowfall
0.0"
Extreme Heat Days
88
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9b
Minimum winter temperature range for plant survival
4,854
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Solano County
Climate Verdict
Solano County has a warm, averaging 62.6°F year-round, semi-arid conditions with only 25.0 inches of annual precipitation, significant summer heat with 88.225 days annually above 90°F, virtually no measurable snowfall. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 48.1°F. summers are warm — July averages 77.0°F. The climate is remarkably stable year-round, with only a 29°F difference between January and July.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Solano County is 3.9°F warmer than the California statewide average of 58.7°F, the county experiences 29.55407503706612 more extreme heat days than the state average.
Climate Profile
About Solano County Weather
A Warm Inland-Influenced Climate
Solano's average annual temperature of 62.6°F is significantly higher than the national median. This reflects its position where coastal air meets the heat of the Central Valley.
One of California's Warmer Counties
Solano is nearly 4 degrees warmer than the California state average of 58.7°F. Its precipitation of 25.0 inches almost perfectly aligns with the state's 25.8-inch norm.
Much Hotter Than Coastal Neighbors
Solano faces 88 days of extreme heat, a massive jump from San Mateo’s 14 days. It experiences a July average of 77.0°F, which is much hotter than the nearby Bay Area coast.
Extreme Heat and Snow-Free Winters
The county endures nearly three months of days over 90°F, though winters remain a mild 49.4°F. Snow is non-existent, and summer averages reach a high 75.4°F.
Maximize Cooling and Early Outdoor Plans
High-capacity air conditioning is a necessity to manage the 88 extreme heat days. Plan outdoor activities for the early morning to avoid the intense afternoon inland heat.
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.