Frost dates for 84313Grouse Creek, UT
The average last spring frost in Grouse Creek is June 4 and the average first fall frost is September 17, giving a typical growing season of about 104 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Jun 4
- Average first fall frost
- Sep 17
- Growing season
- 104 days
Safer after Jun 22 (1-in-10 risk)
Possible by Aug 31 (1-in-10 risk)
Last frost typically in 221 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) | Jun 4 · Jun 18 · Jul 3 | Aug 19 · Sep 5 · Sep 22 | 79 days | 100% |
| Frost / freeze (32°F) | May 17 · Jun 4 · Jun 22 | Aug 31 · Sep 17 · Oct 2 | 104 days | 100% |
| Hard freeze (28°F) | Apr 30 · May 17 · Jun 10 | Sep 12 · Sep 29 · Oct 13 | 133 days | 100% |
Planting calendar for Grouse Creek
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 | May 4 – Jul 10 |
| Tomatoes | Transplant outdoors | Jun 20 – May 28 |
| Peppers | Start seeds indoors | May 4 – Jun 4 |
| Peppers | Transplant outdoors | Jul 4 – Aug 4 |
| Eggplant | Start seeds indoors | May 21 – Jun 19 |
| Eggplant | Transplant outdoors | Jul 4 – Aug 4 |
| Cucumbers | Sow outdoors | Jul 4 – Jun 7 |
| Summer squash | Sow outdoors | Jun 20 – Aug 4 |
| Winter squash & pumpkins | Sow outdoors | Jul 4 – Aug 4 |
| Snap beans | Sow outdoors | Jun 20 – Jun 30 |
| Sweet corn | Sow outdoors | Jun 20 – May 28 |
| Watermelon & cantaloupe | Sow outdoors | Jul 4 – Aug 4 |
| Okra | Sow outdoors | Jun 27 – Jul 20 |
| Peas | Sow outdoors (spring) | May 4 – Jun 19 |
| Potatoes | Plant outdoors (spring) | May 4 – Jul 4 |
| Onions | Start seeds indoors (spring) | Mar 23 – Apr 19 |
| Onions | Transplant outdoors (spring) | May 21 – Jun 19 |
| Broccoli | Start seeds indoors (spring) | Apr 16 – May 20 |
| Broccoli | Transplant outdoors (spring) | May 21 – Jun 19 |
| Broccoli | Start seeds indoors (fall) | May 18 – May 28 |
| Broccoli | Transplant outdoors (fall) | Jun 17 – Jun 28 |
| Cabbage | Start seeds indoors (spring) | Apr 6 – May 4 |
| Cabbage | Transplant outdoors (spring) | May 4 – Jun 4 |
| Cabbage | Start seeds indoors (fall) | May 8 – Jun 7 |
| Cabbage | Transplant outdoors (fall) | Jun 7 – Jul 8 |
| Leaf lettuce | Sow outdoors (spring) | May 4 – Jul 20 |
| Leaf lettuce | Sow outdoors (fall) | Jun 7 – Jul 24 |
| Spinach | Sow outdoors (spring) | Apr 27 – Jun 10 |
| Spinach | Sow outdoors (fall) | Jun 24 – Jul 29 |
| Radishes | Sow outdoors (spring) | May 4 – Jun 24 |
| Radishes | Sow outdoors (fall) | Jun 7 – Aug 8 |
| Kale | Sow outdoors (spring) | May 21 – Jun 10 |
| Kale | Sow outdoors (fall) | May 31 – Jul 8 |
| Carrots | Sow outdoors (spring) | Jun 4 – Jul 20 |
| Carrots | Sow outdoors (fall) | May 8 – Jun 23 |
| Garlic | Plant outdoors (fall) | Sep 7 – Oct 8 |
Where these dates come from
ZIP code 84313 is matched to the NOAA station Grouse Creek, UT, 1.3 km away, at 5,320 ft elevation (8 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Grouse Creek, UT (used) | 5,320 ft | Jun 4 | Sep 17 |
| Rosette, UT | 5,685 ft | May 21 | Oct 2 |
| Montello - 7Ne, NV | 4,828 ft | Jun 3 | Sep 18 |
| Montello 2Ne, NV | 4,830 ft | Jun 1 | Sep 12 |
Frost dates near Grouse Creek
- Almo, ID 83312 · last Jun 4, first Sep 17
- Park Valley, UT 84329 · last May 21, first Oct 2
- Oakley, ID 83346 · last May 15, first Oct 2
- Montello, NV 89830 · last Jun 1, first Sep 12
- Jackpot, NV 89825 · last —, first —
- Malta, ID 83342 · last Jun 5, first Sep 13
- Albion, ID 83311 · last Jun 5, first Sep 13
- Rogerson, ID 83302 · last —, first —
Frequently asked questions
- When is the last frost in Grouse Creek, UT?
- For ZIP code 84313, the average last spring frost (32°F) is June 4, based on NOAA 1991-2020 climate normals for the Grouse Creek, UT weather station. There is a 1-in-10 chance of a frost after June 22.
- When is the first frost in Grouse Creek, UT?
- The average first fall frost (32°F) is September 17. There is a 1-in-10 chance of frost by August 31, so tender plants are at risk from that point on.
- How long is the growing season in 84313?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 104 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.