Frost dates for 86432Littlefield, AZ
The average last spring frost in Littlefield is March 7 and the average first fall frost is November 19, giving a typical growing season of about 251 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 7
- Average first fall frost
- Nov 19
- Growing season
- 251 days
Safer after Apr 10 (1-in-10 risk)
Possible by Nov 1 (1-in-10 risk)
First frost typically in 24 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) | Mar 6 · Apr 4 · Apr 25 | Oct 21 · Nov 8 · Nov 24 | 217 days | 100% |
| Frost / freeze (32°F) | Feb 16 · Mar 7 · Apr 10 | Nov 1 · Nov 19 · Dec 5 | 251 days | 100% |
| Hard freeze (28°F) | Feb 1 · Feb 20 · Mar 11 | Nov 13 · Dec 1 · Dec 16 | 282 days | 100% |
Planting calendar for Littlefield
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 | Feb 4 – Apr 12 |
| Tomatoes | Transplant outdoors | Mar 23 – Jul 30 |
| Peppers | Start seeds indoors | Feb 4 – Mar 7 |
| Peppers | Transplant outdoors | Apr 6 – May 7 |
| Eggplant | Start seeds indoors | Feb 21 – Mar 22 |
| Eggplant | Transplant outdoors | Apr 6 – May 7 |
| Cucumbers | Sow outdoors | Apr 6 – Aug 9 |
| Summer squash | Sow outdoors | Mar 23 – May 7 |
| Winter squash & pumpkins | Sow outdoors | Apr 6 – May 7 |
| Snap beans | Sow outdoors | Mar 23 – Sep 1 |
| Sweet corn | Sow outdoors | Mar 23 – Jul 30 |
| Watermelon & cantaloupe | Sow outdoors | Apr 6 – May 7 |
| Okra | Sow outdoors | Mar 30 – Apr 22 |
| Peas | Sow outdoors (spring) | Feb 4 – Mar 22 |
| Potatoes | Plant outdoors (spring) | Feb 4 – Apr 6 |
| Onions | Start seeds indoors (spring) | Dec 24 – Jan 20 |
| Onions | Transplant outdoors (spring) | Feb 21 – Mar 22 |
| Broccoli | Start seeds indoors (spring) | Jan 17 – Feb 20 |
| Broccoli | Transplant outdoors (spring) | Feb 21 – Mar 22 |
| Broccoli | Start seeds indoors (fall) | Jul 20 – Jul 30 |
| Broccoli | Transplant outdoors (fall) | Aug 19 – Aug 30 |
| Cabbage | Start seeds indoors (spring) | Jan 7 – Feb 4 |
| Cabbage | Transplant outdoors (spring) | Feb 4 – Mar 7 |
| Cabbage | Start seeds indoors (fall) | Jul 10 – Aug 9 |
| Cabbage | Transplant outdoors (fall) | Aug 9 – Sep 9 |
| Leaf lettuce | Sow outdoors (spring) | Feb 4 – Apr 22 |
| Leaf lettuce | Sow outdoors (fall) | Aug 9 – Sep 25 |
| Spinach | Sow outdoors (spring) | Jan 28 – Mar 13 |
| Spinach | Sow outdoors (fall) | Aug 26 – Sep 30 |
| Radishes | Sow outdoors (spring) | Feb 4 – Mar 27 |
| Radishes | Sow outdoors (fall) | Aug 9 – Oct 10 |
| Kale | Sow outdoors (spring) | Feb 21 – Mar 13 |
| Kale | Sow outdoors (fall) | Aug 2 – Sep 9 |
| Carrots | Sow outdoors (spring) | Mar 7 – Apr 22 |
| Carrots | Sow outdoors (fall) | Jul 10 – Aug 25 |
| Garlic | Plant outdoors (fall) | Nov 9 – Dec 10 |
Where these dates come from
ZIP code 86432 is matched to the NOAA station Beaver Dam, AZ, 3.2 km away, at 1,931 ft elevation (91 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Beaver Dam, AZ (used) | 1,931 ft | Mar 7 | Nov 19 |
| Bunkerville, NV | 1,600 ft | Mar 16 | Nov 13 |
| Lytle Rch, UT | 2,787 ft | Mar 18 | Nov 9 |
| St George, UT | 2,857 ft | Mar 14 | Nov 10 |
Frost dates near Littlefield
- Mesquite, NV 89034 · last Mar 16, first Nov 13
- Bunkerville, NV 89007 · last Mar 16, first Nov 13
- Santa Clara, UT 84765 · last Mar 14, first Nov 10
- Ivins, UT 84738 · last Mar 14, first Nov 10
- Saint George, UT 84770 · last Mar 14, first Nov 10
- Washington, UT 84780 · last Mar 14, first Nov 10
- Gunlock, UT 84733 · last Apr 9, first Nov 5
- Dammeron Valley, UT 84783 · last Apr 9, first Nov 5
Frequently asked questions
- When is the last frost in Littlefield, AZ?
- For ZIP code 86432, the average last spring frost (32°F) is March 7, based on NOAA 1991-2020 climate normals for the Beaver Dam, AZ weather station. There is a 1-in-10 chance of a frost after April 10.
- When is the first frost in Littlefield, AZ?
- The average first fall frost (32°F) is November 19. There is a 1-in-10 chance of frost by November 1, so tender plants are at risk from that point on.
- How long is the growing season in 86432?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 251 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.