Frost dates for 82516Kinnear, WY
The average last spring frost in Kinnear is May 21 and the average first fall frost is September 20, giving a typical growing season of about 119 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 21
- Average first fall frost
- Sep 20
- Growing season
- 119 days
Safer after Jun 6 (1-in-10 risk)
Possible by Sep 5 (1-in-10 risk)
Last frost typically in 200 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | May 24 · Jun 9 · Jun 27 | Aug 27 · Sep 10 · Sep 24 | 93 days | 100% |
| Frost / freeze (32°F) | May 7 · May 21 · Jun 6 | Sep 5 · Sep 20 · Oct 4 | 119 days | 100% |
| Hard freeze (28°F) | Apr 26 · May 8 · May 22 | Sep 15 · Oct 1 · Oct 16 | 143 days | 100% |
Planting calendar for Kinnear
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Apr 20 – Jun 26 |
| Tomatoes | Transplant outdoors | Jun 6 – May 31 |
| Peppers | Start seeds indoors | Apr 20 – May 21 |
| Peppers | Transplant outdoors | Jun 20 – Jul 21 |
| Eggplant | Start seeds indoors | May 7 – Jun 5 |
| Eggplant | Transplant outdoors | Jun 20 – Jul 21 |
| Cucumbers | Sow outdoors | Jun 20 – Jun 10 |
| Summer squash | Sow outdoors | Jun 6 – Jul 21 |
| Winter squash & pumpkins | Sow outdoors | Jun 20 – Jul 21 |
| Snap beans | Sow outdoors | Jun 6 – Jul 3 |
| Sweet corn | Sow outdoors | Jun 6 – May 31 |
| Watermelon & cantaloupe | Sow outdoors | Jun 20 – Jul 21 |
| Okra | Sow outdoors | Jun 13 – Jul 6 |
| Peas | Sow outdoors (spring) | Apr 20 – Jun 5 |
| Potatoes | Plant outdoors (spring) | Apr 20 – Jun 20 |
| Onions | Start seeds indoors (spring) | Mar 9 – Apr 5 |
| Onions | Transplant outdoors (spring) | May 7 – Jun 5 |
| Broccoli | Start seeds indoors (spring) | Apr 2 – May 6 |
| Broccoli | Transplant outdoors (spring) | May 7 – Jun 5 |
| Broccoli | Start seeds indoors (fall) | May 21 – May 31 |
| Broccoli | Transplant outdoors (fall) | Jun 20 – Jul 1 |
| Cabbage | Start seeds indoors (spring) | Mar 23 – Apr 20 |
| Cabbage | Transplant outdoors (spring) | Apr 20 – May 21 |
| Cabbage | Start seeds indoors (fall) | May 11 – Jun 10 |
| Cabbage | Transplant outdoors (fall) | Jun 10 – Jul 11 |
| Leaf lettuce | Sow outdoors (spring) | Apr 20 – Jul 6 |
| Leaf lettuce | Sow outdoors (fall) | Jun 10 – Jul 27 |
| Spinach | Sow outdoors (spring) | Apr 13 – May 27 |
| Spinach | Sow outdoors (fall) | Jun 27 – Aug 1 |
| Radishes | Sow outdoors (spring) | Apr 20 – Jun 10 |
| Radishes | Sow outdoors (fall) | Jun 10 – Aug 11 |
| Kale | Sow outdoors (spring) | May 7 – May 27 |
| Kale | Sow outdoors (fall) | Jun 3 – Jul 11 |
| Carrots | Sow outdoors (spring) | May 21 – Jul 6 |
| Carrots | Sow outdoors (fall) | May 11 – Jun 26 |
| Garlic | Plant outdoors (fall) | Sep 10 – Oct 11 |
Where these dates come from
ZIP code 82516 is matched to the NOAA station Diversion Dam, WY, 4.1 km away, at 5,578 ft elevation (144 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Diversion Dam, WY (used) | 5,578 ft | May 21 | Sep 20 |
| Pavillion, WY | 5,480 ft | May 14 | Sep 30 |
| Burris, WY | 6,125 ft | Jun 1 | Sep 14 |
| Riverton, WY | 5,568 ft | May 16 | Sep 28 |
Frost dates near Kinnear
- Pavillion, WY 82523 · last May 14, first Sep 30
- Fort Washakie, WY 82514 · last May 18, first Sep 27
- Crowheart, WY 82512 · last Jun 1, first Sep 14
- Lander, WY 82520 · last May 12, first Sep 24
- Arapahoe, WY 82510 · last May 12, first Sep 24
- Hudson, WY 82515 · last May 12, first Sep 24
- Saint Stephens, WY 82524 · last May 12, first Sep 24
- Riverton, WY 82501 · last May 12, first Sep 24
Frequently asked questions
- When is the last frost in Kinnear, WY?
- For ZIP code 82516, the average last spring frost (32°F) is May 21, based on NOAA 1991-2020 climate normals for the Diversion Dam, WY weather station. There is a 1-in-10 chance of a frost after June 6.
- When is the first frost in Kinnear, WY?
- The average first fall frost (32°F) is September 20. There is a 1-in-10 chance of frost by September 5, so tender plants are at risk from that point on.
- How long is the growing season in 82516?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 119 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.