Whitefield, NH frost dates
Last spring frostMay 27median date
First fall frostSep 19median date
Growing season115 daysfrost-free
Hardiness zone4bZone 4b
How Whitefield compares
- In 8 years out of 10, the last spring frost in Whitefield falls between May 11 and June 10, a 30-day window. The first fall frost falls between September 8 and October 3.
- The median last frost is 20 days later than the New Hampshire median of May 7.
- Its 115-day growing season is among the shortest of the 252 New Hampshire places with a regular frost season.
- The last frost is 19 days later than the zone 4b median of May 8. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 4b chart.
- The weather station records an average of 194 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 11 |
| 50% (median) | May 27 |
| 10% (safe for tender plants) | June 10 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 8 |
| 50% (median) | September 19 |
| 90% (late) | October 3 |
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 Whitefield, NH
Whitefield, NH frost dates — last frost May 27, first frost Sep 19, zone 4b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 4 to Mar 18Transplant outside: Apr 29 to May 13
Start indoors: Mar 18 to Apr 1Transplant outside: Jun 10 to Jun 24
Start indoors: Mar 18 to Apr 1Transplant outside: Jun 10 to Jun 24
Start indoors: Apr 1 to Apr 15Transplant outside: Jun 3 to Jun 17
Start indoors: Apr 1 to Apr 15Transplant outside: May 6 to May 20Sow outdoors: Apr 29 to Jun 3Plant for fall: Jul 25 to Aug 22
Start indoors: Apr 1 to Apr 15Transplant outside: Apr 29 to May 13Sow outdoors: Apr 29 to May 13Plant for fall: Jul 11 to Aug 1
Start indoors: Apr 1 to Apr 15Transplant outside: May 13 to May 27Plant for fall: Jun 13 to Jul 4
Start indoors: Apr 1 to Apr 15Transplant outside: May 6 to May 20Plant for fall: Jun 13 to Jul 4
Start indoors: Apr 1 to Apr 15Transplant outside: May 13 to May 27Plant for fall: Jun 13 to Jul 4
Start indoors: Apr 15 to Apr 29Transplant outside: Jun 17 to Jul 1Sow outdoors: Jun 17 to Jul 1
Start indoors: Apr 15 to Apr 29Transplant outside: Jun 3 to Jun 17
Sow outdoors: Apr 15 to May 6Plant for fall: Jun 27 to Jul 18
Sow outdoors: Apr 15 to May 6Plant for fall: Jul 25 to Aug 15
Sow outdoors: Apr 22 to Jun 3Plant for fall: Aug 8 to Aug 29
Start indoors: Apr 29 to May 6Transplant outside: Jun 10 to Jun 17Sow outdoors: Jun 3 to Jun 17Plant for fall: Jul 4 to Jul 18
Start indoors: Apr 29 to May 6Sow outdoors: Jun 3 to Jun 17Plant for fall: Jul 11 to Jul 25
Start indoors: Apr 29 to May 6Sow outdoors: Jun 3 to Jun 17
Start indoors: Apr 29 to May 6Transplant outside: Jun 10 to Jun 24
Sow outdoors: May 6 to Jun 3Plant for fall: Jun 27 to Jul 11
Sow outdoors: May 6 to Jun 3Plant for fall: Jul 11 to Jul 25
Sow outdoors: May 6 to May 27
Sow outdoors: May 13 to Jun 10Plant for fall: Jul 11 to Jul 25
Sow outdoors: May 13 to Jun 3Plant for fall: Jul 25 to Aug 15
Sow outdoors: Jun 3 to Jun 24
Sow outdoors: Jun 3 to Jun 17
Transplant outside: Jun 10 to Jul 1
Plant for fall: Sep 5 to Oct 10
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Whitefield, NH
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 4 – Mar 18 | Apr 29 – May 13 | — | — |
| Peppers | Mar 18 – Apr 1 | Jun 10 – Jun 24 | — | — |
| Eggplant | Mar 18 – Apr 1 | Jun 10 – Jun 24 | — | — |
| Tomatoes | Apr 1 – Apr 15 | Jun 3 – Jun 17 | — | — |
| Lettuce | Apr 1 – Apr 15 | May 6 – May 20 | Apr 29 – Jun 3 | Jul 25 – Aug 22 |
| Kale | Apr 1 – Apr 15 | Apr 29 – May 13 | Apr 29 – May 13 | Jul 11 – Aug 1 |
| Broccoli | Apr 1 – Apr 15 | May 13 – May 27 | — | Jun 13 – Jul 4 |
| Cabbage | Apr 1 – Apr 15 | May 6 – May 20 | — | Jun 13 – Jul 4 |
| Cauliflower | Apr 1 – Apr 15 | May 13 – May 27 | — | Jun 13 – Jul 4 |
| Okra | Apr 15 – Apr 29 | Jun 17 – Jul 1 | Jun 17 – Jul 1 | — |
| Basil | Apr 15 – Apr 29 | Jun 3 – Jun 17 | — | — |
| Peas | — | — | Apr 15 – May 6 | Jun 27 – Jul 18 |
| Spinach | — | — | Apr 15 – May 6 | Jul 25 – Aug 15 |
| Radishes | — | — | Apr 22 – Jun 3 | Aug 8 – Aug 29 |
| Cucumbers | Apr 29 – May 6 | Jun 10 – Jun 17 | Jun 3 – Jun 17 | Jul 4 – Jul 18 |
| Zucchini & Summer Squash | Apr 29 – May 6 | — | Jun 3 – Jun 17 | Jul 11 – Jul 25 |
| Winter Squash & Pumpkins | Apr 29 – May 6 | — | Jun 3 – Jun 17 | — |
| Melons & Watermelon | Apr 29 – May 6 | Jun 10 – Jun 24 | — | — |
| Carrots | — | — | May 6 – Jun 3 | Jun 27 – Jul 11 |
| Beets | — | — | May 6 – Jun 3 | Jul 11 – Jul 25 |
| Potatoes | — | — | May 6 – May 27 | — |
| Swiss Chard | — | — | May 13 – Jun 10 | Jul 11 – Jul 25 |
| Cilantro | — | — | May 13 – Jun 3 | Jul 25 – Aug 15 |
| Green Beans | — | — | Jun 3 – Jun 24 | — |
| Sweet Corn | — | — | Jun 3 – Jun 17 | — |
| Sweet Potatoes | — | Jun 10 – Jul 1 | — | — |
| Garlic | — | — | — | Sep 5 – Oct 10 |
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 Whitefield Mt Washington Ap, NH weather station, 5 km away (elevation 1,073 ft (327 m)).
Frost dates near Whitefield
- Bethlehem May 24 · Sep 18
- Twin Mountain May 24 · Sep 18
- Jefferson May 8 · Oct 1
- Lancaster May 18 · Sep 30
- Littleton May 24 · Sep 18
- Bretton Woods frost any month
- Franconia May 24 · Sep 18
- Sugar Hill May 24 · Sep 18
- Randolph May 14 · Sep 26
- Groveton May 19 · Sep 29
Frequently asked questions
When is the last frost in Whitefield, NH?
The median last spring frost in Whitefield, NH is May 27. There is still about a 10% chance of frost after June 10, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Whitefield, NH?
The median first fall frost is September 19, with about a 10% chance of frost before September 8.
How long is the growing season in Whitefield, NH?
About 115 days between the median last spring frost and first fall frost.
What planting zone is Whitefield, NH?
Whitefield, NH is in USDA hardiness zone 4b.