Frost dates for Laramie, WY
When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.
Last spring frost
June 7
typical year
Safe to plant
June 29
frost is over in 9 of 10 years
First fall frost
September 4
typical year
Growing season
88 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | – | May 10 – 24 | – |
| Spinach | – | Apr 26 – May 17 | Jul 10 – 24 |
| Lettuce | – | May 10 – 31 | Jul 10 – 24 |
| Radishes | – | May 10 – Jun 21 | Jul 24 – Aug 7 |
| Onions | – | May 10 – 24 | – |
| Potatoes | Season usually too short. Try a quick variety or row covers. | ||
| Carrots | – | May 17 – Jun 7 | Jun 12 – 26 |
| Beets | – | May 10 – 24 | Jun 26 – Jul 10 |
| Kale | Mar 29 – Apr 12 | May 10 – 24 | Jun 26 – Jul 10 |
| Broccoli | Mar 29 – Apr 12 | May 24 – Jun 7 | Jun 26 – Jul 10 |
| Cabbage | Mar 15 – 29 | May 10 – 24 | Jun 26 – Jul 10 |
| Garlic | – | – | Jul 24 – Aug 14 |
| Warm-season crops | |||
| Tomatoes | Season usually too short. Try a quick variety or row covers. | ||
| Peppers | Season usually too short. Try a quick variety or row covers. | ||
| Cucumbers | – | Jun 29 – Jul 20 | – |
| Zucchini | – | Jun 29 – Jul 27 | – |
| Pumpkins | Season usually too short. Try a quick variety or row covers. | ||
| Green beans | Season usually too short. Try a quick variety or row covers. | ||
| Sweet corn | Season usually too short. Try a quick variety or row covers. | ||
| Basil | May 25 – Jun 8 | Jul 6 – 13 | – |
Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.
The year at a glance
Start indoors Plant outside Fall planting
The chance of frost, by date
| 1 year in 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | June 29 | June 7 | May 23 |
| Fall frost before | August 17 | September 4 | September 18 |
Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.
Hard freeze (28°F)
A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around May 22 (June 6 in a late year), and the first one in fall around September 14.
Towns that use these dates
This is the nearest NOAA station with frost records for 1 town.
Laramie
Where these dates come from
NOAA weather station LARAMIE 2 NW, WY US (USC00485435), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 7 miles:
82072
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.