Monroe, LA Frost Dates
Published: February 1, 2026 · Updated: April 23, 2026
USDA Zone 8a
Last Spring Frost
February 15
Safe to transplant after this date
First Fall Frost
December 1
Protect tender plants before this date
Frost-Free Season
289 days
Late February to Early December
260 days until last frost in Monroe — February 15
Monroe’s zone 8a climate means frost is a minor consideration. Nine and a half months frost-free. Warm-season grasses go dormant only briefly if at all. Rather than a single planting season, Monroe gardeners work almost year-round.
Complete Planting Calendar for Monroe
Lawn Care Timing for Monroe
Based on Monroe's USDA zone 8a frost dates: The last frost of February 15 marks when warm-season grasses begin recovering. Apply spring fertilizer in Late February when soil reaches 55°F. The first fall frost of December 1 sets your deadlines — complete overseeding by October 15–November 15 and apply winterizer by December.
USDA Zone 8a Summary
Nine and a half months frost-free. Warm-season grasses go dormant only briefly if at all.
Frequently Asked Questions
What is the last frost date in Monroe, LA?
The average last spring frost in Monroe is February 15. This is based on USDA zone 8a historical averages. Plan transplanting and spring lawn care around this date — wait 2 weeks after for frost-sensitive plantings.
When is the first fall frost in Monroe?
Monroe’s average first fall frost is December 1. This sets deadlines for fall overseeding (must be done 6 weeks before) and winterizer application (by December).
When should I plant tomatoes in Monroe?
Transplant tomato seedlings outdoors after February 15. Start seeds indoors November (for winter garden). Direct sow warm-season crops after february 22.
When should I overseed my lawn in Monroe?
The prime overseeding window in Monroe is October 15–November 15. This ensures warm soil for germination before the first fall frost on December 1.
When should I apply winterizer in Monroe?
Apply winterizer fertilizer in Monroe by December. This high-potassium application hardens grass cell walls before freeze damage. Your first fall frost of December 1 is the hard deadline.