Union Parish Climate
Union Parish, Louisiana
Avg Annual Temp
64.2°F
Annual Precip
58.4"
Annual Snowfall
0.9"
Extreme Heat Days
82.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.