Frost dates for 84751Milford, UT
The average last spring frost in Milford is May 13 and the average first fall frost is October 4, giving a typical growing season of about 143 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 13
- Average first fall frost
- Oct 4
- Growing season
- 143 days
Safer after Jun 2 (1-in-10 risk)
Possible by Sep 22 (1-in-10 risk)
Last frost typically in 198 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 11 · May 28 · Jun 12 | Sep 13 · Sep 26 · Oct 8 | 121 days | 100% |
| Frost / freeze (32°F) | Apr 27 · May 13 · Jun 2 | Sep 22 · Oct 4 · Oct 18 | 143 days | 100% |
| Hard freeze (28°F) | Apr 14 · Apr 30 · May 18 | Sep 30 · Oct 14 · Oct 28 | 164 days | 100% |
Planting calendar for Milford
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 12 – Jun 18 |
| Tomatoes | Transplant outdoors | May 29 – Jun 14 |
| Peppers | Start seeds indoors | Apr 12 – May 13 |
| Peppers | Transplant outdoors | Jun 12 – Jul 13 |
| Eggplant | Start seeds indoors | Apr 29 – May 28 |
| Eggplant | Transplant outdoors | Jun 12 – Jul 13 |
| Cucumbers | Sow outdoors | Jun 12 – Jun 24 |
| Summer squash | Sow outdoors | May 29 – Jul 13 |
| Winter squash & pumpkins | Sow outdoors | Jun 12 – Jul 13 |
| Snap beans | Sow outdoors | May 29 – Jul 17 |
| Sweet corn | Sow outdoors | May 29 – Jun 14 |
| Watermelon & cantaloupe | Sow outdoors | Jun 12 – Jul 13 |
| Okra | Sow outdoors | Jun 5 – Jun 28 |
| Peas | Sow outdoors (spring) | Apr 12 – May 28 |
| Potatoes | Plant outdoors (spring) | Apr 12 – Jun 12 |
| Onions | Start seeds indoors (spring) | Mar 1 – Mar 28 |
| Onions | Transplant outdoors (spring) | Apr 29 – May 28 |
| Broccoli | Start seeds indoors (spring) | Mar 25 – Apr 28 |
| Broccoli | Transplant outdoors (spring) | Apr 29 – May 28 |
| Broccoli | Start seeds indoors (fall) | Jun 4 – Jun 14 |
| Broccoli | Transplant outdoors (fall) | Jul 4 – Jul 15 |
| Cabbage | Start seeds indoors (spring) | Mar 15 – Apr 12 |
| Cabbage | Transplant outdoors (spring) | Apr 12 – May 13 |
| Cabbage | Start seeds indoors (fall) | May 25 – Jun 24 |
| Cabbage | Transplant outdoors (fall) | Jun 24 – Jul 25 |
| Leaf lettuce | Sow outdoors (spring) | Apr 12 – Jun 28 |
| Leaf lettuce | Sow outdoors (fall) | Jun 24 – Aug 10 |
| Spinach | Sow outdoors (spring) | Apr 5 – May 19 |
| Spinach | Sow outdoors (fall) | Jul 11 – Aug 15 |
| Radishes | Sow outdoors (spring) | Apr 12 – Jun 2 |
| Radishes | Sow outdoors (fall) | Jun 24 – Aug 25 |
| Kale | Sow outdoors (spring) | Apr 29 – May 19 |
| Kale | Sow outdoors (fall) | Jun 17 – Jul 25 |
| Carrots | Sow outdoors (spring) | May 13 – Jun 28 |
| Carrots | Sow outdoors (fall) | May 25 – Jul 10 |
| Garlic | Plant outdoors (fall) | Sep 24 – Oct 25 |
Where these dates come from
ZIP code 84751 is matched to the NOAA station Milford Muni Ap, UT, 9.7 km away, at 5,040 ft elevation (27 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Milford Muni Ap, UT (used) | 5,040 ft | May 13 | Oct 4 |
| Milford, UT | 5,009 ft | May 10 | Oct 2 |
| Wah Wah Rch, UT | 4,880 ft | May 19 | Sep 29 |
| Black Rock, UT | 4,916 ft | May 23 | Sep 27 |
Frost dates near Milford
- Minersville, UT 84752 · last May 13, first Oct 4
- Greenville, UT 84731 · last May 24, first Sep 25
- Beaver, UT 84713 · last May 23, first Sep 27
- Paragonah, UT 84760 · last May 21, first Sep 29
- Parowan, UT 84761 · last May 4, first Oct 13
- Summit, UT 84772 · last May 4, first Oct 13
- Sevier, UT 84766 · last Jun 4, first Sep 21
- Marysvale, UT 84750 · last May 24, first Sep 25
Frequently asked questions
- When is the last frost in Milford, UT?
- For ZIP code 84751, the average last spring frost (32°F) is May 13, based on NOAA 1991-2020 climate normals for the Milford Muni Ap, UT weather station. There is a 1-in-10 chance of a frost after June 2.
- When is the first frost in Milford, UT?
- The average first fall frost (32°F) is October 4. There is a 1-in-10 chance of frost by September 22, so tender plants are at risk from that point on.
- How long is the growing season in 84751?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 143 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.