Frost dates in Maine
Average last frost dates in Maine run from April 25 in Auburn to May 16 in Sanford.
| Place | Last frost | First frost |
|---|---|---|
| Auburn | Apr 25 | Oct 19 |
| Augusta | Apr 27 | Oct 16 |
| Bangor | May 4 | Oct 4 |
| Biddeford | May 9 | Oct 3 |
| Lewiston | Apr 25 | Oct 19 |
| Portland | Apr 26 | Oct 15 |
| Saco | Apr 26 | Oct 15 |
| Sanford | May 16 | Sept 30 |
| South Portland | Apr 26 | Oct 15 |
| Waterville | May 2 | Oct 10 |
| Westbrook | Apr 26 | Oct 15 |
Source: NOAA U.S. Climate Normals 1991–2020, nearest station to each place. Places of 10,000+ people (US Census Bureau, 2024 estimates) within 50 miles of a station.
When to plant in Maine
- Asparagus
- Lima Beans
- Green Beans
- Beets
- Broccoli
- Brussels Sprouts
- Cabbage
- Chinese Cabbage
- Carrots
- Cauliflower
- Celery
- Swiss Chard
- Collard Greens
- Sweet Corn
- Cucumbers
- Eggplant
- Garlic
- Kale
- Leeks
- Lettuce
- Cantaloupe
- Okra
- Onions
- Onion Sets
- Peas
- Black-Eyed Peas
- Peppers
- Potatoes
- Radishes
- Rhubarb
- Spinach
- Summer Squash (Zucchini)
- Winter Squash
- Sweet Potatoes
- Tomatoes
- Turnips
- Watermelon