Frost dates for 82071 — Laramie, WY
Last spring frostJun 7median date
First fall frostSep 4median date
Growing season89 daysfrost-free
Hardiness zone5bZone 5b
How Laramie compares
- In 8 years out of 10, the last spring frost in Laramie falls between May 23 and June 29, a 37-day window. The first fall frost falls between August 17 and September 18.
- The median last frost is 17 days later than the Wyoming median of May 21.
- Its 89-day growing season is longer than 10% of the 153 Wyoming places with a regular frost season (state median 125 days).
- The last frost is 37 days later than the zone 5b median of May 1. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5b chart.
- The weather station records an average of 217 nights a year at or below 32°F.
- Compared with Cheyenne, WY, 69 km away, the last frost here is 26 days later than there and the growing season is 53 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 23 |
| 50% (median) | June 7 |
| 10% (safe for tender plants) | June 29 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | August 17 |
| 50% (median) | September 4 |
| 90% (late) | September 18 |
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 Laramie, WY
Frost dates for 82071 — Laramie, WY — last frost Jun 7, first frost Sep 4, zone 5b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 15 to Mar 29Transplant outside: May 10 to May 24
Start indoors: Mar 29 to Apr 12Transplant outside: Jun 21 to Jul 5
Start indoors: Mar 29 to Apr 12Transplant outside: Jun 21 to Jul 5
Start indoors: Apr 12 to Apr 26Transplant outside: Jun 14 to Jun 28
Start indoors: Apr 12 to Apr 26Transplant outside: May 17 to May 31Sow outdoors: May 10 to Jun 14Plant for fall: Jul 10 to Aug 7
Start indoors: Apr 12 to Apr 26Transplant outside: May 10 to May 24Sow outdoors: May 10 to May 24Plant for fall: Jun 26 to Jul 17
Start indoors: Apr 12 to Apr 26Transplant outside: May 24 to Jun 7
Start indoors: Apr 12 to Apr 26Transplant outside: May 17 to May 31
Start indoors: Apr 12 to Apr 26Transplant outside: May 24 to Jun 7
Start indoors: Apr 26 to May 10Transplant outside: Jun 28 to Jul 12Sow outdoors: Jun 28 to Jul 12
Start indoors: Apr 26 to May 10Transplant outside: Jun 14 to Jun 28
Sow outdoors: Apr 26 to May 17
Sow outdoors: Apr 26 to May 17Plant for fall: Jul 10 to Jul 31
Sow outdoors: May 3 to Jun 14Plant for fall: Jul 24 to Aug 14
Start indoors: May 10 to May 17Transplant outside: Jun 21 to Jun 28Sow outdoors: Jun 14 to Jun 28
Start indoors: May 10 to May 17Sow outdoors: Jun 14 to Jun 28
Start indoors: May 10 to May 17Sow outdoors: Jun 14 to Jun 28
Start indoors: May 10 to May 17Transplant outside: Jun 21 to Jul 5
Sow outdoors: May 17 to Jun 14
Sow outdoors: May 17 to Jun 14
Sow outdoors: May 17 to Jun 7
Sow outdoors: May 24 to Jun 21
Sow outdoors: May 24 to Jun 14Plant for fall: Jul 10 to Jul 31
Sow outdoors: Jun 14 to Jul 5
Sow outdoors: Jun 14 to Jun 28
Transplant outside: Jun 21 to Jul 12
Plant for fall: Aug 21 to Sep 25
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Laramie, WY
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 15 – Mar 29 | May 10 – May 24 | — | — |
| Peppers | Mar 29 – Apr 12 | Jun 21 – Jul 5 | — | — |
| Eggplant | Mar 29 – Apr 12 | Jun 21 – Jul 5 | — | — |
| Tomatoes | Apr 12 – Apr 26 | Jun 14 – Jun 28 | — | — |
| Lettuce | Apr 12 – Apr 26 | May 17 – May 31 | May 10 – Jun 14 | Jul 10 – Aug 7 |
| Kale | Apr 12 – Apr 26 | May 10 – May 24 | May 10 – May 24 | Jun 26 – Jul 17 |
| Broccoli | Apr 12 – Apr 26 | May 24 – Jun 7 | — | — |
| Cabbage | Apr 12 – Apr 26 | May 17 – May 31 | — | — |
| Cauliflower | Apr 12 – Apr 26 | May 24 – Jun 7 | — | — |
| Okra | Apr 26 – May 10 | Jun 28 – Jul 12 | Jun 28 – Jul 12 | — |
| Basil | Apr 26 – May 10 | Jun 14 – Jun 28 | — | — |
| Peas | — | — | Apr 26 – May 17 | — |
| Spinach | — | — | Apr 26 – May 17 | Jul 10 – Jul 31 |
| Radishes | — | — | May 3 – Jun 14 | Jul 24 – Aug 14 |
| Cucumbers | May 10 – May 17 | Jun 21 – Jun 28 | Jun 14 – Jun 28 | — |
| Zucchini & Summer Squash | May 10 – May 17 | — | Jun 14 – Jun 28 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 89 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 10 – May 17 | — | Jun 14 – Jun 28 | — |
| Melons & Watermelon Warning: Your frost-free season is about 89 days, which is tight for melons & watermelon (85+ days). Choose early varieties and use transplants or row covers. | May 10 – May 17 | Jun 21 – Jul 5 | — | — |
| Carrots | — | — | May 17 – Jun 14 | — |
| Beets | — | — | May 17 – Jun 14 | — |
| Potatoes | — | — | May 17 – Jun 7 | — |
| Swiss Chard | — | — | May 24 – Jun 21 | — |
| Cilantro | — | — | May 24 – Jun 14 | Jul 10 – Jul 31 |
| Green Beans | — | — | Jun 14 – Jul 5 | — |
| Sweet Corn Warning: Your frost-free season is about 89 days, which is tight for sweet corn (80+ days). Choose early varieties and use transplants or row covers. | — | — | Jun 14 – Jun 28 | — |
| Sweet Potatoes Warning: Your frost-free season is about 89 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 21 – Jul 12 | — | — |
| Garlic | — | — | — | Aug 21 – Sep 25 |
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 Laramie 2 Nw, WY weather station, 3 km away (elevation 7,139 ft (2,176 m)).
ZIP codes in Laramie: 82070 82071 82072 82073
Frost dates near Laramie
- Bosler Jun 7 · Sep 4
- Tie Siding May 31 · Sep 19
- Buford May 27 · Sep 19
- Centennial Jun 2 · Sep 19
- Horse Creek May 27 · Sep 19
- Jelm frost any month
- Granite Canon May 31 · Sep 19
- Rock River Jun 1 · Sep 8
Frequently asked questions
When is the last frost in Laramie, WY?
The median last spring frost in Laramie, WY is June 7. There is still about a 10% chance of frost after June 29, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Laramie, WY?
The median first fall frost is September 4, with about a 10% chance of frost before August 17.
How long is the growing season in Laramie, WY?
About 89 days between the median last spring frost and first fall frost.
What planting zone is Laramie, WY?
Laramie, WY is in USDA hardiness zone 5b.