December 2025 Monthly Climate Review

By Jay Grymes

Louisiana State Climatologist

December marks the 7th consecutive month with below-average rainfall for Louisiana. However, monthly rain totals demonstrated a substantial gradient across the state, averaging under 2.00” for the northern 1/3rd of the state but running near-normal to above normal (4.00” to 6.00”+) across much of southern Louisiana. December monthly average temperatures were above normal across the state, with departures running from +1.0°F to +4.0°F for most locations. 

The “dry” and “warm” trends for December meant a continuation of drought for roughly 40% of the state at month’s end, but that was a modest improvement compared to the start of December, when roughly 60% of the state was “in drought” according to the U.S. Drought Monitor.