Glen Rock, NJ frost dates
Last spring frostApr 15median date
First fall frostOct 28median date
Growing season196 daysfrost-free
Hardiness zone7aZone 7a
How Glen Rock compares
- In 8 years out of 10, the last spring frost in Glen Rock falls between April 1 and May 1, a 30-day window. The first fall frost falls between October 13 and November 9.
- The median last frost is 1 day earlier than the New Jersey median of Apr 16.
- Its 196-day growing season is longer than 54% of the 582 New Jersey places with a regular frost season (state median 194 days).
- The last frost is typical for zone 7a, where the median is Apr 16.
- The weather station records an average of 117 nights a year at or below 32°F.
- Glen Rock shares its weather station with Paterson, NJ, 6 km away, so the two have the same frost dates.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 1 |
| 50% (median) | April 15 |
| 10% (safe for tender plants) | May 1 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 13 |
| 50% (median) | October 28 |
| 90% (late) | November 9 |
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 Glen Rock, NJ
Glen Rock, NJ frost dates — last frost Apr 15, first frost Oct 28, zone 7a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Jan 21 to Feb 4Transplant outside: Mar 18 to Apr 1
Start indoors: Feb 4 to Feb 18Transplant outside: Apr 29 to May 13
Start indoors: Feb 4 to Feb 18Transplant outside: Apr 29 to May 13
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 22 to May 6
Start indoors: Feb 18 to Mar 4Transplant outside: Mar 25 to Apr 8Sow outdoors: Mar 18 to Apr 22Plant for fall: Sep 2 to Sep 30
Start indoors: Feb 18 to Mar 4Transplant outside: Mar 18 to Apr 1Sow outdoors: Mar 18 to Apr 1Plant for fall: Aug 19 to Sep 9
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 1 to Apr 15Plant for fall: Jul 22 to Aug 12
Start indoors: Feb 18 to Mar 4Transplant outside: Mar 25 to Apr 8Plant for fall: Jul 22 to Aug 12
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 1 to Apr 15Plant for fall: Jul 22 to Aug 12
Start indoors: Mar 4 to Mar 18Transplant outside: May 6 to May 20Sow outdoors: May 6 to May 20
Start indoors: Mar 4 to Mar 18Transplant outside: Apr 22 to May 6
Sow outdoors: Mar 4 to Mar 25Plant for fall: Aug 5 to Aug 26
Sow outdoors: Mar 4 to Mar 25Plant for fall: Sep 2 to Sep 23
Sow outdoors: Mar 11 to Apr 22Plant for fall: Sep 16 to Oct 7
Start indoors: Mar 18 to Mar 25Transplant outside: Apr 29 to May 6Sow outdoors: Apr 22 to May 6Plant for fall: Aug 12 to Aug 26
Start indoors: Mar 18 to Mar 25Sow outdoors: Apr 22 to May 6Plant for fall: Aug 19 to Sep 2
Start indoors: Mar 18 to Mar 25Sow outdoors: Apr 22 to May 6
Start indoors: Mar 18 to Mar 25Transplant outside: Apr 29 to May 13
Sow outdoors: Mar 25 to Apr 22Plant for fall: Aug 5 to Aug 19
Sow outdoors: Mar 25 to Apr 22Plant for fall: Aug 19 to Sep 2
Sow outdoors: Mar 25 to Apr 15
Sow outdoors: Apr 1 to Apr 29Plant for fall: Aug 19 to Sep 2
Sow outdoors: Apr 1 to Apr 22Plant for fall: Sep 2 to Sep 23
Sow outdoors: Apr 22 to May 13Plant for fall: Aug 12 to Aug 26
Sow outdoors: Apr 22 to May 6
Transplant outside: Apr 29 to May 20
Plant for fall: Oct 14 to Nov 18
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Glen Rock, NJ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 21 – Feb 4 | Mar 18 – Apr 1 | — | — |
| Peppers | Feb 4 – Feb 18 | Apr 29 – May 13 | — | — |
| Eggplant | Feb 4 – Feb 18 | Apr 29 – May 13 | — | — |
| Tomatoes | Feb 18 – Mar 4 | Apr 22 – May 6 | — | — |
| Lettuce | Feb 18 – Mar 4 | Mar 25 – Apr 8 | Mar 18 – Apr 22 | Sep 2 – Sep 30 |
| Kale | Feb 18 – Mar 4 | Mar 18 – Apr 1 | Mar 18 – Apr 1 | Aug 19 – Sep 9 |
| Broccoli | Feb 18 – Mar 4 | Apr 1 – Apr 15 | — | Jul 22 – Aug 12 |
| Cabbage | Feb 18 – Mar 4 | Mar 25 – Apr 8 | — | Jul 22 – Aug 12 |
| Cauliflower | Feb 18 – Mar 4 | Apr 1 – Apr 15 | — | Jul 22 – Aug 12 |
| Okra | Mar 4 – Mar 18 | May 6 – May 20 | May 6 – May 20 | — |
| Basil | Mar 4 – Mar 18 | Apr 22 – May 6 | — | — |
| Peas | — | — | Mar 4 – Mar 25 | Aug 5 – Aug 26 |
| Spinach | — | — | Mar 4 – Mar 25 | Sep 2 – Sep 23 |
| Radishes | — | — | Mar 11 – Apr 22 | Sep 16 – Oct 7 |
| Cucumbers | Mar 18 – Mar 25 | Apr 29 – May 6 | Apr 22 – May 6 | Aug 12 – Aug 26 |
| Zucchini & Summer Squash | Mar 18 – Mar 25 | — | Apr 22 – May 6 | Aug 19 – Sep 2 |
| Winter Squash & Pumpkins | Mar 18 – Mar 25 | — | Apr 22 – May 6 | — |
| Melons & Watermelon | Mar 18 – Mar 25 | Apr 29 – May 13 | — | — |
| Carrots | — | — | Mar 25 – Apr 22 | Aug 5 – Aug 19 |
| Beets | — | — | Mar 25 – Apr 22 | Aug 19 – Sep 2 |
| Potatoes | — | — | Mar 25 – Apr 15 | — |
| Swiss Chard | — | — | Apr 1 – Apr 29 | Aug 19 – Sep 2 |
| Cilantro | — | — | Apr 1 – Apr 22 | Sep 2 – Sep 23 |
| Green Beans | — | — | Apr 22 – May 13 | Aug 12 – Aug 26 |
| Sweet Corn | — | — | Apr 22 – May 6 | — |
| Sweet Potatoes | — | Apr 29 – May 20 | — | — |
| Garlic | — | — | — | Oct 14 – Nov 18 |
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 Little Falls, NJ weather station, 12 km away (elevation 151 ft (46 m)).
Frost dates near Glen Rock
- Ridgewood Apr 15 · Oct 28
- Hawthorne Apr 15 · Oct 28
- Fair Lawn Apr 3 · Nov 4
- Midland Park Apr 19 · Oct 23
- Paramus Apr 3 · Nov 4
- Ho Ho Kus Apr 15 · Oct 28
- Wyckoff Apr 19 · Oct 23
- Haledon Apr 15 · Oct 28
- Waldwick Apr 19 · Oct 23
- Elmwood Park Apr 3 · Nov 4
Frequently asked questions
When is the last frost in Glen Rock, NJ?
The median last spring frost in Glen Rock, NJ is April 15. There is still about a 10% chance of frost after May 1, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Glen Rock, NJ?
The median first fall frost is October 28, with about a 10% chance of frost before October 13.
How long is the growing season in Glen Rock, NJ?
About 196 days between the median last spring frost and first fall frost.
What planting zone is Glen Rock, NJ?
Glen Rock, NJ is in USDA hardiness zone 7a.