Rhame, ND frost dates
Last spring frostMay 16median date
First fall frostSep 25median date
Growing season132 daysfrost-free
Hardiness zone4bZone 4b
How Rhame compares
- In 8 years out of 10, the last spring frost in Rhame falls between May 5 and May 29, a 24-day window. The first fall frost falls between September 11 and October 7.
- The median last frost is 4 days later than the North Dakota median of May 12.
- Its 132-day growing season is longer than 25% of the 372 North Dakota places with a regular frost season (state median 139 days).
- The last frost is 8 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 191 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 5 |
| 50% (median) | May 16 |
| 10% (safe for tender plants) | May 29 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 11 |
| 50% (median) | September 25 |
| 90% (late) | October 7 |
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 Rhame, ND
Rhame, ND frost dates — last frost May 16, first frost Sep 25, zone 4b. whenisthelastfrost.com
Crop
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Start indoors: Feb 21 to Mar 7Transplant outside: Apr 18 to May 2
Start indoors: Mar 7 to Mar 21Transplant outside: May 30 to Jun 13
Start indoors: Mar 7 to Mar 21Transplant outside: May 30 to Jun 13
Start indoors: Mar 21 to Apr 4Transplant outside: May 23 to Jun 6
Start indoors: Mar 21 to Apr 4Transplant outside: Apr 25 to May 9Sow outdoors: Apr 18 to May 23Plant for fall: Jul 31 to Aug 28
Start indoors: Mar 21 to Apr 4Transplant outside: Apr 18 to May 2Sow outdoors: Apr 18 to May 2Plant for fall: Jul 17 to Aug 7
Start indoors: Mar 21 to Apr 4Transplant outside: May 2 to May 16Plant for fall: Jun 19 to Jul 10
Start indoors: Mar 21 to Apr 4Transplant outside: Apr 25 to May 9Plant for fall: Jun 19 to Jul 10
Start indoors: Mar 21 to Apr 4Transplant outside: May 2 to May 16Plant for fall: Jun 19 to Jul 10
Start indoors: Apr 4 to Apr 18Transplant outside: Jun 6 to Jun 20Sow outdoors: Jun 6 to Jun 20
Start indoors: Apr 4 to Apr 18Transplant outside: May 23 to Jun 6
Sow outdoors: Apr 4 to Apr 25Plant for fall: Jul 3 to Jul 24
Sow outdoors: Apr 4 to Apr 25Plant for fall: Jul 31 to Aug 21
Sow outdoors: Apr 11 to May 23Plant for fall: Aug 14 to Sep 4
Start indoors: Apr 18 to Apr 25Transplant outside: May 30 to Jun 6Sow outdoors: May 23 to Jun 6Plant for fall: Jul 10 to Jul 24
Start indoors: Apr 18 to Apr 25Sow outdoors: May 23 to Jun 6Plant for fall: Jul 17 to Jul 31
Start indoors: Apr 18 to Apr 25Sow outdoors: May 23 to Jun 6
Start indoors: Apr 18 to Apr 25Transplant outside: May 30 to Jun 13
Sow outdoors: Apr 25 to May 23Plant for fall: Jul 3 to Jul 17
Sow outdoors: Apr 25 to May 23Plant for fall: Jul 17 to Jul 31
Sow outdoors: Apr 25 to May 16
Sow outdoors: May 2 to May 30Plant for fall: Jul 17 to Jul 31
Sow outdoors: May 2 to May 23Plant for fall: Jul 31 to Aug 21
Sow outdoors: May 23 to Jun 13Plant for fall: Jul 10 to Jul 24
Sow outdoors: May 23 to Jun 6
Transplant outside: May 30 to Jun 20
Plant for fall: Sep 11 to Oct 16
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Rhame, ND
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 21 – Mar 7 | Apr 18 – May 2 | — | — |
| Peppers | Mar 7 – Mar 21 | May 30 – Jun 13 | — | — |
| Eggplant | Mar 7 – Mar 21 | May 30 – Jun 13 | — | — |
| Tomatoes | Mar 21 – Apr 4 | May 23 – Jun 6 | — | — |
| Lettuce | Mar 21 – Apr 4 | Apr 25 – May 9 | Apr 18 – May 23 | Jul 31 – Aug 28 |
| Kale | Mar 21 – Apr 4 | Apr 18 – May 2 | Apr 18 – May 2 | Jul 17 – Aug 7 |
| Broccoli | Mar 21 – Apr 4 | May 2 – May 16 | — | Jun 19 – Jul 10 |
| Cabbage | Mar 21 – Apr 4 | Apr 25 – May 9 | — | Jun 19 – Jul 10 |
| Cauliflower | Mar 21 – Apr 4 | May 2 – May 16 | — | Jun 19 – Jul 10 |
| Okra | Apr 4 – Apr 18 | Jun 6 – Jun 20 | Jun 6 – Jun 20 | — |
| Basil | Apr 4 – Apr 18 | May 23 – Jun 6 | — | — |
| Peas | — | — | Apr 4 – Apr 25 | Jul 3 – Jul 24 |
| Spinach | — | — | Apr 4 – Apr 25 | Jul 31 – Aug 21 |
| Radishes | — | — | Apr 11 – May 23 | Aug 14 – Sep 4 |
| Cucumbers | Apr 18 – Apr 25 | May 30 – Jun 6 | May 23 – Jun 6 | Jul 10 – Jul 24 |
| Zucchini & Summer Squash | Apr 18 – Apr 25 | — | May 23 – Jun 6 | Jul 17 – Jul 31 |
| Winter Squash & Pumpkins | Apr 18 – Apr 25 | — | May 23 – Jun 6 | — |
| Melons & Watermelon | Apr 18 – Apr 25 | May 30 – Jun 13 | — | — |
| Carrots | — | — | Apr 25 – May 23 | Jul 3 – Jul 17 |
| Beets | — | — | Apr 25 – May 23 | Jul 17 – Jul 31 |
| Potatoes | — | — | Apr 25 – May 16 | — |
| Swiss Chard | — | — | May 2 – May 30 | Jul 17 – Jul 31 |
| Cilantro | — | — | May 2 – May 23 | Jul 31 – Aug 21 |
| Green Beans | — | — | May 23 – Jun 13 | Jul 10 – Jul 24 |
| Sweet Corn | — | — | May 23 – Jun 6 | — |
| Sweet Potatoes | — | May 30 – Jun 20 | — | — |
| Garlic | — | — | — | Sep 11 – Oct 16 |
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 Bowman, ND weather station, 26 km away (elevation 2,982 ft (909 m)).
Frost dates near Rhame
- Marmarth May 16 · Sep 26
- Bowman May 16 · Sep 25
- Scranton May 16 · Sep 25
- Amidon May 12 · Sep 29
- Reeder May 24 · Sep 18
- Golva May 16 · Sep 26
- Hettinger May 24 · Sep 18
- Sentinel Butte May 16 · Sep 26
- New England May 16 · Sep 24
- Belfield May 9 · Sep 30
Frequently asked questions
When is the last frost in Rhame, ND?
The median last spring frost in Rhame, ND is May 16. There is still about a 10% chance of frost after May 29, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Rhame, ND?
The median first fall frost is September 25, with about a 10% chance of frost before September 11.
How long is the growing season in Rhame, ND?
About 132 days between the median last spring frost and first fall frost.
What planting zone is Rhame, ND?
Rhame, ND is in USDA hardiness zone 4b.