Walcott, WY frost dates
Last spring frostJun 12median date
First fall frostSep 7median date
Growing season87 daysfrost-free
Hardiness zone5aZone 5a
How Walcott compares
- In 8 years out of 10, the last spring frost in Walcott falls between May 25 and June 30, a 36-day window. The first fall frost falls between August 22 and September 19.
- The median last frost is 22 days later than the Wyoming median of May 21.
- Its 87-day growing season is longer than 5% of the 153 Wyoming places with a regular frost season (state median 125 days).
- The last frost is 40 days later than the zone 5a median of May 3. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5a chart.
- The weather station records an average of 229 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 25 |
| 50% (median) | June 12 |
| 10% (safe for tender plants) | June 30 |
| 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 Walcott, WY
Walcott, WY frost dates — last frost Jun 12, first frost Sep 7, zone 5a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 20 to Apr 3Transplant outside: May 15 to May 29
Start indoors: Apr 3 to Apr 17Transplant outside: Jun 26 to Jul 10
Start indoors: Apr 3 to Apr 17Transplant outside: Jun 26 to Jul 10
Start indoors: Apr 17 to May 1Transplant outside: Jun 19 to Jul 3
Start indoors: Apr 17 to May 1Transplant outside: May 22 to Jun 5Sow outdoors: May 15 to Jun 19Plant for fall: Jul 13 to Aug 10
Start indoors: Apr 17 to May 1Transplant outside: May 15 to May 29Sow outdoors: May 15 to May 29Plant for fall: Jun 29 to Jul 20
Start indoors: Apr 17 to May 1Transplant outside: May 29 to Jun 12
Start indoors: Apr 17 to May 1Transplant outside: May 22 to Jun 5
Start indoors: Apr 17 to May 1Transplant outside: May 29 to Jun 12
Start indoors: May 1 to May 15Transplant outside: Jul 3 to Jul 17Sow outdoors: Jul 3 to Jul 17
Start indoors: May 1 to May 15Transplant outside: Jun 19 to Jul 3
Sow outdoors: May 1 to May 22
Sow outdoors: May 1 to May 22Plant for fall: Jul 13 to Aug 3
Sow outdoors: May 8 to Jun 19Plant for fall: Jul 27 to Aug 17
Start indoors: May 15 to May 22Transplant outside: Jun 26 to Jul 3Sow outdoors: Jun 19 to Jul 3
Start indoors: May 15 to May 22Sow outdoors: Jun 19 to Jul 3
Start indoors: May 15 to May 22Sow outdoors: Jun 19 to Jul 3
Start indoors: May 15 to May 22Transplant outside: Jun 26 to Jul 10
Sow outdoors: May 22 to Jun 19
Sow outdoors: May 22 to Jun 19
Sow outdoors: May 22 to Jun 12
Sow outdoors: May 29 to Jun 26
Sow outdoors: May 29 to Jun 19Plant for fall: Jul 13 to Aug 3
Sow outdoors: Jun 19 to Jul 10
Sow outdoors: Jun 19 to Jul 3
Transplant outside: Jun 26 to Jul 17
Plant for fall: Aug 24 to Sep 28
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Walcott, WY
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 20 – Apr 3 | May 15 – May 29 | — | — |
| Peppers Warning: Your frost-free season is about 87 days, which is tight for peppers (75+ days). Choose early varieties and use transplants or row covers. | Apr 3 – Apr 17 | Jun 26 – Jul 10 | — | — |
| Eggplant Warning: Your frost-free season is about 87 days, which is tight for eggplant (75+ days). Choose early varieties and use transplants or row covers. | Apr 3 – Apr 17 | Jun 26 – Jul 10 | — | — |
| Tomatoes | Apr 17 – May 1 | Jun 19 – Jul 3 | — | — |
| Lettuce | Apr 17 – May 1 | May 22 – Jun 5 | May 15 – Jun 19 | Jul 13 – Aug 10 |
| Kale | Apr 17 – May 1 | May 15 – May 29 | May 15 – May 29 | Jun 29 – Jul 20 |
| Broccoli | Apr 17 – May 1 | May 29 – Jun 12 | — | — |
| Cabbage | Apr 17 – May 1 | May 22 – Jun 5 | — | — |
| Cauliflower | Apr 17 – May 1 | May 29 – Jun 12 | — | — |
| Okra | May 1 – May 15 | Jul 3 – Jul 17 | Jul 3 – Jul 17 | — |
| Basil | May 1 – May 15 | Jun 19 – Jul 3 | — | — |
| Peas | — | — | May 1 – May 22 | — |
| Spinach | — | — | May 1 – May 22 | Jul 13 – Aug 3 |
| Radishes | — | — | May 8 – Jun 19 | Jul 27 – Aug 17 |
| Cucumbers | May 15 – May 22 | Jun 26 – Jul 3 | Jun 19 – Jul 3 | — |
| Zucchini & Summer Squash | May 15 – May 22 | — | Jun 19 – Jul 3 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 87 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 15 – May 22 | — | Jun 19 – Jul 3 | — |
| Melons & Watermelon Warning: Your frost-free season is about 87 days, which is tight for melons & watermelon (85+ days). Choose early varieties and use transplants or row covers. | May 15 – May 22 | Jun 26 – Jul 10 | — | — |
| Carrots | — | — | May 22 – Jun 19 | — |
| Beets | — | — | May 22 – Jun 19 | — |
| Potatoes | — | — | May 22 – Jun 12 | — |
| Swiss Chard | — | — | May 29 – Jun 26 | — |
| Cilantro | — | — | May 29 – Jun 19 | Jul 13 – Aug 3 |
| Green Beans | — | — | Jun 19 – Jul 10 | — |
| Sweet Corn Warning: Your frost-free season is about 87 days, which is tight for sweet corn (80+ days). Choose early varieties and use transplants or row covers. | — | — | Jun 19 – Jul 3 | — |
| Sweet Potatoes Warning: Your frost-free season is about 87 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 26 – Jul 17 | — | — |
| 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 Saratoga 4n, WY weather station, 29 km away (elevation 6,801 ft (2,073 m)).
Frost dates near Walcott
- Shirley Basin Jun 1 · Sep 15
- Sinclair Jun 1 · Sep 15
- Hanna May 28 · Sep 13
- Saratoga Jun 12 · Sep 7
- Rawlins May 17 · Oct 2
- Elk Mountain May 28 · Sep 13
- Medicine Bow Jun 1 · Sep 8
- Encampment Jun 2 · Sep 12
- Rock River Jun 1 · Sep 8
- Bairoil May 21 · Sep 27
Frequently asked questions
When is the last frost in Walcott, WY?
The median last spring frost in Walcott, WY is June 12. There is still about a 10% chance of frost after June 30, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Walcott, WY?
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 Walcott, WY?
About 87 days between the median last spring frost and first fall frost.
What planting zone is Walcott, WY?
Walcott, WY is in USDA hardiness zone 5a.