Frost dates for 79057Mclean, TX
The average last spring frost in Mclean is April 10 and the average first fall frost is October 30, giving a typical growing season of about 201 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 10
- Average first fall frost
- Oct 30
- Growing season
- 201 days
Safer after Apr 29 (1-in-10 risk)
Possible by Oct 14 (1-in-10 risk)
First frost typically in 4 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) | Apr 5 · Apr 22 · May 6 | Oct 6 · Oct 22 · Nov 3 | 182 days | 100% |
| Frost / freeze (32°F) | Mar 24 · Apr 10 · Apr 29 | Oct 14 · Oct 30 · Nov 13 | 201 days | 100% |
| Hard freeze (28°F) | Mar 8 · Mar 30 · Apr 18 | Oct 23 · Nov 9 · Nov 25 | 224 days | 100% |
Planting calendar for Mclean
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 | Mar 10 – May 16 |
| Tomatoes | Transplant outdoors | Apr 26 – Jul 10 |
| Peppers | Start seeds indoors | Mar 10 – Apr 10 |
| Peppers | Transplant outdoors | May 10 – Jun 10 |
| Eggplant | Start seeds indoors | Mar 27 – Apr 25 |
| Eggplant | Transplant outdoors | May 10 – Jun 10 |
| Cucumbers | Sow outdoors | May 10 – Jul 20 |
| Summer squash | Sow outdoors | Apr 26 – Jun 10 |
| Winter squash & pumpkins | Sow outdoors | May 10 – Jun 10 |
| Snap beans | Sow outdoors | Apr 26 – Aug 12 |
| Sweet corn | Sow outdoors | Apr 26 – Jul 10 |
| Watermelon & cantaloupe | Sow outdoors | May 10 – Jun 10 |
| Okra | Sow outdoors | May 3 – May 26 |
| Peas | Sow outdoors (spring) | Mar 10 – Apr 25 |
| Potatoes | Plant outdoors (spring) | Mar 10 – May 10 |
| Onions | Start seeds indoors (spring) | Jan 27 – Feb 23 |
| Onions | Transplant outdoors (spring) | Mar 27 – Apr 25 |
| Broccoli | Start seeds indoors (spring) | Feb 20 – Mar 26 |
| Broccoli | Transplant outdoors (spring) | Mar 27 – Apr 25 |
| Broccoli | Start seeds indoors (fall) | Jun 30 – Jul 10 |
| Broccoli | Transplant outdoors (fall) | Jul 30 – Aug 10 |
| Cabbage | Start seeds indoors (spring) | Feb 10 – Mar 10 |
| Cabbage | Transplant outdoors (spring) | Mar 10 – Apr 10 |
| Cabbage | Start seeds indoors (fall) | Jun 20 – Jul 20 |
| Cabbage | Transplant outdoors (fall) | Jul 20 – Aug 20 |
| Leaf lettuce | Sow outdoors (spring) | Mar 10 – May 26 |
| Leaf lettuce | Sow outdoors (fall) | Jul 20 – Sep 5 |
| Spinach | Sow outdoors (spring) | Mar 3 – Apr 16 |
| Spinach | Sow outdoors (fall) | Aug 6 – Sep 10 |
| Radishes | Sow outdoors (spring) | Mar 10 – Apr 30 |
| Radishes | Sow outdoors (fall) | Jul 20 – Sep 20 |
| Kale | Sow outdoors (spring) | Mar 27 – Apr 16 |
| Kale | Sow outdoors (fall) | Jul 13 – Aug 20 |
| Carrots | Sow outdoors (spring) | Apr 10 – May 26 |
| Carrots | Sow outdoors (fall) | Jun 20 – Aug 5 |
| Garlic | Plant outdoors (fall) | Oct 20 – Nov 20 |
Where these dates come from
ZIP code 79057 is matched to the NOAA station Mc Lean, TX, 1 km away, at 2,632 ft elevation (229 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Mc Lean, TX (used) | 2,632 ft | Apr 10 | Oct 30 |
| Shamrock #2, TX | 2,360 ft | Apr 9 | Oct 30 |
| Clarendon, TX | 2,700 ft | Apr 14 | Oct 26 |
| Pampa #2, TX | 3,150 ft | Apr 14 | Oct 28 |
Frost dates near Mclean
- Alanreed, TX 79002 · last Apr 10, first Oct 30
- Lefors, TX 79054 · last Apr 14, first Oct 28
- Shamrock, TX 79079 · last Apr 9, first Oct 30
- Samnorwood, TX 79077 · last Apr 9, first Oct 30
- Mobeetie, TX 79061 · last Apr 10, first Oct 30
- Quail, TX 79251 · last Apr 1, first Nov 4
- Wheeler, TX 79096 · last Apr 9, first Oct 30
- Hedley, TX 79237 · last Apr 14, first Oct 26
Frequently asked questions
- When is the last frost in Mclean, TX?
- For ZIP code 79057, the average last spring frost (32°F) is April 10, based on NOAA 1991-2020 climate normals for the Mc Lean, TX weather station. There is a 1-in-10 chance of a frost after April 29.
- When is the first frost in Mclean, TX?
- The average first fall frost (32°F) is October 30. There is a 1-in-10 chance of frost by October 14, so tender plants are at risk from that point on.
- How long is the growing season in 79057?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 201 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.