Union Parish Climate
Union Parish, Louisiana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
64.2°F
Annual Precip
58.4"
Annual Snowfall
0.9"
Extreme Heat Days
83
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
5,830
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Union Parish
Climate Verdict
Union Parish has a warm, averaging 64.2°F year-round, very wet conditions receiving 58.4 inches of precipitation annually, significant summer heat with 82.9 days annually above 90°F, light snow averaging 0.9 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 45.2°F. summers are hot, with July averaging 81.9°F. The 37°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Union Parish closely matches the Louisiana statewide average temperature of 67.0°F, it is somewhat drier than average for Louisiana.
Climate Profile
About Union Parish Weather
Louisiana’s cooler northern border
Union Parish averages 64.2°F annually, making it one of the coolest parishes in Louisiana, though still much warmer than the national median. It sits on the Arkansas border, influenced by continental air masses.
Below the Louisiana average
At 64.2°F, the parish is nearly three degrees cooler than the state average of 67.0°F. It represents the northern tail of Louisiana’s temperature spectrum.
Cooler and drier than Tensas
Union Parish is over a degree cooler than Tensas Parish (65.5°F) and shares a similar rainfall profile of 58.4 inches. It also experiences slightly more winter activity, including nearly an inch of annual snow.
Hottest highs and coldest lows
The parish endures 83 days of extreme heat, but winters are noticeably colder than the coast, averaging 47.1°F. It is one of the few places in the state with measurable snowfall, averaging 0.9 inches.
Prepare for rare winter snow
Unlike most of Louisiana, residents here should keep a snow shovel handy for the 0.9 inches of annual snowfall. The 83 days of extreme heat still require robust cooling systems and sun protection during the 80.8°F summers.
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.