Whitetail, MT frost dates
Last spring frostMay 28median date
First fall frostSep 7median date
Growing season102 daysfrost-free
Hardiness zone3bZone 3b
How Whitetail compares
- In 8 years out of 10, the last spring frost in Whitetail falls between May 15 and June 13, a 29-day window. The first fall frost falls between August 22 and September 19.
- The median last frost is 9 days later than the Montana median of May 19.
- Its 102-day growing season is longer than 13% of the 325 Montana places with a regular frost season (state median 125 days).
- The last frost is 11 days later than the zone 3b median of May 17. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 3b chart.
- The weather station records an average of 209 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 15 |
| 50% (median) | May 28 |
| 10% (safe for tender plants) | June 13 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | August 22 |
| 50% (median) | September 7 |
| 90% (late) | September 19 |
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 Whitetail, MT
Whitetail, MT frost dates — last frost May 28, first frost Sep 7, zone 3b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 5 to Mar 19Transplant outside: Apr 30 to May 14
Start indoors: Mar 19 to Apr 2Transplant outside: Jun 11 to Jun 25
Start indoors: Mar 19 to Apr 2Transplant outside: Jun 11 to Jun 25
Start indoors: Apr 2 to Apr 16Transplant outside: Jun 4 to Jun 18
Start indoors: Apr 2 to Apr 16Transplant outside: May 7 to May 21Sow outdoors: Apr 30 to Jun 4Plant for fall: Jul 13 to Aug 10
Start indoors: Apr 2 to Apr 16Transplant outside: Apr 30 to May 14Sow outdoors: Apr 30 to May 14Plant for fall: Jun 29 to Jul 20
Start indoors: Apr 2 to Apr 16Transplant outside: May 14 to May 28
Start indoors: Apr 2 to Apr 16Transplant outside: May 7 to May 21
Start indoors: Apr 2 to Apr 16Transplant outside: May 14 to May 28
Start indoors: Apr 16 to Apr 30Transplant outside: Jun 18 to Jul 2Sow outdoors: Jun 18 to Jul 2
Start indoors: Apr 16 to Apr 30Transplant outside: Jun 4 to Jun 18
Sow outdoors: Apr 16 to May 7Plant for fall: Jun 15 to Jul 6
Sow outdoors: Apr 16 to May 7Plant for fall: Jul 13 to Aug 3
Sow outdoors: Apr 23 to Jun 4Plant for fall: Jul 27 to Aug 17
Start indoors: Apr 30 to May 7Transplant outside: Jun 11 to Jun 18Sow outdoors: Jun 4 to Jun 18
Start indoors: Apr 30 to May 7Sow outdoors: Jun 4 to Jun 18
Start indoors: Apr 30 to May 7Sow outdoors: Jun 4 to Jun 18
Start indoors: Apr 30 to May 7Transplant outside: Jun 11 to Jun 25
Sow outdoors: May 7 to Jun 4
Sow outdoors: May 7 to Jun 4Plant for fall: Jun 29 to Jul 13
Sow outdoors: May 7 to May 28
Sow outdoors: May 14 to Jun 11Plant for fall: Jun 29 to Jul 13
Sow outdoors: May 14 to Jun 4Plant for fall: Jul 13 to Aug 3
Sow outdoors: Jun 4 to Jun 25
Sow outdoors: Jun 4 to Jun 18
Transplant outside: Jun 11 to Jul 2
Plant for fall: Aug 24 to Sep 28
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Whitetail, MT
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 5 – Mar 19 | Apr 30 – May 14 | — | — |
| Peppers | Mar 19 – Apr 2 | Jun 11 – Jun 25 | — | — |
| Eggplant | Mar 19 – Apr 2 | Jun 11 – Jun 25 | — | — |
| Tomatoes | Apr 2 – Apr 16 | Jun 4 – Jun 18 | — | — |
| Lettuce | Apr 2 – Apr 16 | May 7 – May 21 | Apr 30 – Jun 4 | Jul 13 – Aug 10 |
| Kale | Apr 2 – Apr 16 | Apr 30 – May 14 | Apr 30 – May 14 | Jun 29 – Jul 20 |
| Broccoli | Apr 2 – Apr 16 | May 14 – May 28 | — | — |
| Cabbage | Apr 2 – Apr 16 | May 7 – May 21 | — | — |
| Cauliflower | Apr 2 – Apr 16 | May 14 – May 28 | — | — |
| Okra | Apr 16 – Apr 30 | Jun 18 – Jul 2 | Jun 18 – Jul 2 | — |
| Basil | Apr 16 – Apr 30 | Jun 4 – Jun 18 | — | — |
| Peas | — | — | Apr 16 – May 7 | Jun 15 – Jul 6 |
| Spinach | — | — | Apr 16 – May 7 | Jul 13 – Aug 3 |
| Radishes | — | — | Apr 23 – Jun 4 | Jul 27 – Aug 17 |
| Cucumbers | Apr 30 – May 7 | Jun 11 – Jun 18 | Jun 4 – Jun 18 | — |
| Zucchini & Summer Squash | Apr 30 – May 7 | — | Jun 4 – Jun 18 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 102 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | Apr 30 – May 7 | — | Jun 4 – Jun 18 | — |
| Melons & Watermelon | Apr 30 – May 7 | Jun 11 – Jun 25 | — | — |
| Carrots | — | — | May 7 – Jun 4 | — |
| Beets | — | — | May 7 – Jun 4 | Jun 29 – Jul 13 |
| Potatoes | — | — | May 7 – May 28 | — |
| Swiss Chard | — | — | May 14 – Jun 11 | Jun 29 – Jul 13 |
| Cilantro | — | — | May 14 – Jun 4 | Jul 13 – Aug 3 |
| Green Beans | — | — | Jun 4 – Jun 25 | — |
| Sweet Corn | — | — | Jun 4 – Jun 18 | — |
| Sweet Potatoes Warning: Your frost-free season is about 102 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 11 – Jul 2 | — | — |
| Garlic | — | — | — | Aug 24 – Sep 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 Redstone, MT weather station, 18 km away (elevation 2,106 ft (642 m)).
Frost dates near Whitetail
- Flaxville May 28 · Sep 7
- Scobey May 28 · Sep 6
- Redstone May 28 · Sep 7
- Outlook May 28 · Sep 7
- Raymond May 25 · Sep 14
- Plentywood May 25 · Sep 14
- Peerless May 28 · Sep 6
- Reserve May 16 · Sep 18
- Antelope May 25 · Sep 14
- Medicine Lake May 16 · Sep 18
Frequently asked questions
When is the last frost in Whitetail, MT?
The median last spring frost in Whitetail, MT is May 28. There is still about a 10% chance of frost after June 13, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Whitetail, MT?
The median first fall frost is September 7, with about a 10% chance of frost before August 22.
How long is the growing season in Whitetail, MT?
About 102 days between the median last spring frost and first fall frost.
What planting zone is Whitetail, MT?
Whitetail, MT is in USDA hardiness zone 3b.