Pettis County Climate
Pettis County, Missouri
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
54.3°F
Annual Precip
39.9"
Annual Snowfall
13.1"
Extreme Heat Days
34
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
3,846
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Pettis County
Climate Verdict
Pettis County has a mild, with an average annual temperature of 54.3°F, moderate rainfall of 39.9 inches per year, occasional hot days — 34.3 per year above 90°F, light snow averaging 13.1 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 29.3°F. summers are warm — July averages 77.1°F. The 48°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Pettis County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Pettis County closely matches the Missouri statewide average temperature of 54.9°F, it is somewhat drier than average for Missouri.
Climate Profile
About Pettis County Weather
Pettis County Closely Mirrors National Medians
Pettis County maintains an annual average temperature of 54.3°F, placing it right in line with the national median. This climate is typical of the humid continental zone where warm summers meet cold, distinct winters.
Slightly Cooler Than the Missouri Average
The county's average temperature of 54.3°F is slightly lower than the Missouri state average of 54.9°F. It also receives 39.9 inches of annual precipitation, which is roughly 4 inches less than the state benchmark.
Mid-State Climate Stability
Pettis is slightly cooler than southern neighbor Benton but shares a similar profile with Saline County to the north. Its 13.1 inches of snowfall is standard for Central Missouri, providing moderate winter coverage compared to the state's northern tier.
Hot Summers and Bracing Winters
July averages reach 77.1°F with residents facing 34 extreme heat days above 90°F annually. Winters are chilly, with a January average of 29.3°F and a total seasonal snowfall of 13.1 inches.
Prepare for Heat and Ice
Residents should invest in cooling systems to handle over a month of extreme heat. Reliable winter tires and salt are essential for managing the annual snowfall and freezing January temperatures.
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.