Guilford, ME frost dates
Last spring frostMay 6median date
First fall frostOct 7median date
Growing season154 daysfrost-free
Hardiness zone5aZone 5a
How Guilford compares
- In 8 years out of 10, the last spring frost in Guilford falls between April 25 and May 20, a 25-day window. The first fall frost falls between September 26 and October 23.
- The median last frost is the same as the Maine median of May 6.
- Its 154-day growing season is longer than 50% of the 457 Maine places with a regular frost season (state median 154 days).
- The last frost is typical for zone 5a, where the median is May 3.
- The weather station records an average of 165 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 25 |
| 50% (median) | May 6 |
| 10% (safe for tender plants) | May 20 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 26 |
| 50% (median) | October 7 |
| 90% (late) | October 23 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Guilford, ME
Guilford, ME frost dates — last frost May 6, first frost Oct 7, zone 5a. whenisthelastfrost.com
Crop
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Start indoors: Feb 11 to Feb 25Transplant outside: Apr 8 to Apr 22
Start indoors: Feb 25 to Mar 11Transplant outside: May 20 to Jun 3
Start indoors: Feb 25 to Mar 11Transplant outside: May 20 to Jun 3
Start indoors: Mar 11 to Mar 25Transplant outside: May 13 to May 27
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 15 to Apr 29Sow outdoors: Apr 8 to May 13Plant for fall: Aug 12 to Sep 9
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 8 to Apr 22Sow outdoors: Apr 8 to Apr 22Plant for fall: Jul 29 to Aug 19
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 22 to May 6Plant for fall: Jul 1 to Jul 22
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 15 to Apr 29Plant for fall: Jul 1 to Jul 22
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 22 to May 6Plant for fall: Jul 1 to Jul 22
Start indoors: Mar 25 to Apr 8Transplant outside: May 27 to Jun 10Sow outdoors: May 27 to Jun 10
Start indoors: Mar 25 to Apr 8Transplant outside: May 13 to May 27
Sow outdoors: Mar 25 to Apr 15Plant for fall: Jul 15 to Aug 5
Sow outdoors: Mar 25 to Apr 15Plant for fall: Aug 12 to Sep 2
Sow outdoors: Apr 1 to May 13Plant for fall: Aug 26 to Sep 16
Start indoors: Apr 8 to Apr 15Transplant outside: May 20 to May 27Sow outdoors: May 13 to May 27Plant for fall: Jul 22 to Aug 5
Start indoors: Apr 8 to Apr 15Sow outdoors: May 13 to May 27Plant for fall: Jul 29 to Aug 12
Start indoors: Apr 8 to Apr 15Sow outdoors: May 13 to May 27
Start indoors: Apr 8 to Apr 15Transplant outside: May 20 to Jun 3
Sow outdoors: Apr 15 to May 13Plant for fall: Jul 15 to Jul 29
Sow outdoors: Apr 15 to May 13Plant for fall: Jul 29 to Aug 12
Sow outdoors: Apr 15 to May 6
Sow outdoors: Apr 22 to May 20Plant for fall: Jul 29 to Aug 12
Sow outdoors: Apr 22 to May 13Plant for fall: Aug 12 to Sep 2
Sow outdoors: May 13 to Jun 3Plant for fall: Jul 22 to Aug 5
Sow outdoors: May 13 to May 27
Transplant outside: May 20 to Jun 10
Plant for fall: Sep 23 to Oct 28
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Guilford, ME
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 11 – Feb 25 | Apr 8 – Apr 22 | — | — |
| Peppers | Feb 25 – Mar 11 | May 20 – Jun 3 | — | — |
| Eggplant | Feb 25 – Mar 11 | May 20 – Jun 3 | — | — |
| Tomatoes | Mar 11 – Mar 25 | May 13 – May 27 | — | — |
| Lettuce | Mar 11 – Mar 25 | Apr 15 – Apr 29 | Apr 8 – May 13 | Aug 12 – Sep 9 |
| Kale | Mar 11 – Mar 25 | Apr 8 – Apr 22 | Apr 8 – Apr 22 | Jul 29 – Aug 19 |
| Broccoli | Mar 11 – Mar 25 | Apr 22 – May 6 | — | Jul 1 – Jul 22 |
| Cabbage | Mar 11 – Mar 25 | Apr 15 – Apr 29 | — | Jul 1 – Jul 22 |
| Cauliflower | Mar 11 – Mar 25 | Apr 22 – May 6 | — | Jul 1 – Jul 22 |
| Okra | Mar 25 – Apr 8 | May 27 – Jun 10 | May 27 – Jun 10 | — |
| Basil | Mar 25 – Apr 8 | May 13 – May 27 | — | — |
| Peas | — | — | Mar 25 – Apr 15 | Jul 15 – Aug 5 |
| Spinach | — | — | Mar 25 – Apr 15 | Aug 12 – Sep 2 |
| Radishes | — | — | Apr 1 – May 13 | Aug 26 – Sep 16 |
| Cucumbers | Apr 8 – Apr 15 | May 20 – May 27 | May 13 – May 27 | Jul 22 – Aug 5 |
| Zucchini & Summer Squash | Apr 8 – Apr 15 | — | May 13 – May 27 | Jul 29 – Aug 12 |
| Winter Squash & Pumpkins | Apr 8 – Apr 15 | — | May 13 – May 27 | — |
| Melons & Watermelon | Apr 8 – Apr 15 | May 20 – Jun 3 | — | — |
| Carrots | — | — | Apr 15 – May 13 | Jul 15 – Jul 29 |
| Beets | — | — | Apr 15 – May 13 | Jul 29 – Aug 12 |
| Potatoes | — | — | Apr 15 – May 6 | — |
| Swiss Chard | — | — | Apr 22 – May 20 | Jul 29 – Aug 12 |
| Cilantro | — | — | Apr 22 – May 13 | Aug 12 – Sep 2 |
| Green Beans | — | — | May 13 – Jun 3 | Jul 22 – Aug 5 |
| Sweet Corn | — | — | May 13 – May 27 | — |
| Sweet Potatoes | — | May 20 – Jun 10 | — | — |
| Garlic | — | — | — | Sep 23 – Oct 28 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the E Sangerville, ME weather station, 10 km away (elevation 636 ft (194 m)).
Frost dates near Guilford
- Sangerville May 6 · Oct 7
- Cambridge May 11 · Oct 1
- Abbot May 6 · Oct 7
- Dover Foxcroft May 15 · Sep 28
- Monson May 7 · Oct 9
- Dexter May 8 · Oct 3
- Sebec May 12 · Oct 1
- Harmony May 11 · Oct 1
- Garland May 8 · Oct 3
- Charleston May 15 · Sep 28
Frequently asked questions
When is the last frost in Guilford, ME?
The median last spring frost in Guilford, ME is May 6. There is still about a 10% chance of frost after May 20, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Guilford, ME?
The median first fall frost is October 7, with about a 10% chance of frost before September 26.
How long is the growing season in Guilford, ME?
About 154 days between the median last spring frost and first fall frost.
What planting zone is Guilford, ME?
Guilford, ME is in USDA hardiness zone 5a.