Frost dates for ZIP 93451 (San Miguel, CA)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Coalinga, CA (18 miles away).
- Average last spring frostFeb 1450% chance of a 32°F freeze after this date
- Average first fall frostNov 3050% chance of a 32°F freeze by this date
- Growing season (frost-free)292 daysmedian, 32°F threshold
- USDA hardiness zone8b15 to 20°F avg. coldest night
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This week in your yard
As of Oct 17, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
76°F 55°F or warmer
24-hour average · latest 82°F, as of Oct 17, 10:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Vallecitos (37 mi), Monocline Ridge (42 mi).
4-inch depth
75°F 55°F or warmer
24-hour average · latest 80°F, as of Oct 17, 10:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Vallecitos (37 mi), Monocline Ridge (42 mi).
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
The latest National Weather Service 7-day forecast and any Frost Advisory or Freeze Warning for 93451 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 75°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent (annual bluegrass, winter weeds): not yet. Apply as soil cools toward 70°F (typically September to October).
Fertilizer window
Lawn region: California coastal and valleys. Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about Apr 1 here, using green-up about 3–4 weeks after your average last frost); Summer: Every 4–6 weeks through mid-August (heaviest feeder of the group); Late: Light, low-nitrogen/high-potassium feeding about 4 weeks before first frost, or skip. Avoid: Heavy late-fall nitrogen (linked to spring dead spot).
- Tall fescue (cool-season): Early fall: September (main feeding); Late fall: November, while still green; Late winter: Optional light feeding February–March. Avoid: Feeding after mid-spring and through summer in the transition zone (stress and brown patch).
Plant now
- Lettuce: fall sowing Sep 21–Oct 19
- Lettuce: fall transplant Oct 5–26
- Spinach: fall sowing Oct 5–26
- Bok choy / Asian greens: fall sowing Oct 5–19
- Arugula: fall sowing Oct 5–Nov 2
- Mustard greens: fall sowing Oct 5–19
- Cilantro: fall sowing Oct 5–19
- Dill: fall sowing Oct 5–19
- Strawberry (plants): fall transplant Sep 21–Oct 19
Coming up in the next 3 weeks
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 30: skip heavy pruning in the 6–8 weeks before it, because new growth may not harden off in time.
Spring-flowering shrubs are pruned right after their flowers fade, not by date. See the pruning guide.
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Jan 10 |
| 50% (the "average" last frost) | Feb 14 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 8 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Nov 15 |
| 50% (the "average" first frost) | Nov 30 |
| 90% (late: most years have frozen by now) | Dec 21 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 11 | Nov 17 |
| 32°F (freeze) | Feb 14 | Nov 30 |
| 28°F (hard freeze) | Jan 16 | Dec 16 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
Vegetable planting calendar for 93451
Dates count from your average last spring frost (Feb 14) and first fall frost (Nov 30). Half of years have a frost after the spring date, so give tender crops (tomatoes, peppers, squash) some slack.
| Crop | Start indoors | Spring planting | Fall planting |
|---|---|---|---|
| Tomato | Dec 20–Jan 3 | Feb 21–Mar 7 (transplant) | Aug 3–31 (transplant) |
| Pepper (sweet and hot) | Dec 6–20 | Feb 28–Mar 14 (transplant) | Aug 10–31 (transplant) |
| Eggplant | Dec 6–20 | Feb 28–Mar 14 (transplant) | Aug 10–31 (transplant) |
| Tomatillo | Dec 20–Jan 3 | Feb 21–Mar 7 (transplant) | – |
| Lettuce | Dec 20–Jan 3 | Jan 24–Feb 14 (transplant) Jan 17–Feb 28 (sow outdoors) | Oct 5–26 (transplant) Sep 21–Oct 19 (sowing) |
| Spinach | – | Jan 3–24 (sow outdoors) | Oct 5–26 (sowing) |
| Kale | Dec 20–Jan 3 | Jan 17–31 (transplant) Jan 17–31 (sow outdoors) | Sep 7–Oct 5 (transplant) Aug 24–Sep 21 (sowing) |
| Collards | Dec 20–Jan 3 | Jan 17–Feb 14 (transplant) Jan 17–Feb 14 (sow outdoors) | Sep 7–Oct 5 (transplant) Aug 24–Sep 21 (sowing) |
| Broccoli | Dec 6–20 | Jan 17–31 (transplant) | Aug 24–Sep 21 (transplant) |
| Cabbage | Dec 6–20 | Jan 17–31 (transplant) | Aug 24–Sep 21 (transplant) |
| Cauliflower | Dec 6–20 | Jan 31–Feb 14 (transplant) | Aug 24–Sep 21 (transplant) |
| Brussels sprouts | Nov 22–Dec 6 | Jan 17–31 (transplant) | Aug 10–31 (transplant) |
| Kohlrabi | Dec 20–Jan 3 | Jan 17–31 (transplant) Jan 17–31 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Bok choy / Asian greens | – | Jan 17–31 (sow outdoors) | Oct 5–19 (sowing) |
| Arugula | – | Jan 17–Feb 14 (sow outdoors) | Oct 5–Nov 2 (sowing) |
| Mustard greens | – | Jan 17–Feb 7 (sow outdoors) | Oct 5–19 (sowing) |
| Swiss chard | Jan 3–17 | Jan 31–Feb 21 (transplant) Jan 31–Feb 28 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Beet | – | Jan 17–Feb 14 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Carrot | – | Jan 24–Feb 21 (sow outdoors) | Sep 7–21 (sowing) |
| Radish | – | Jan 10–Feb 21 (sow outdoors) | Oct 19–Nov 2 (sowing) |
| Turnip | – | Jan 17–Feb 7 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Parsnip | – | Jan 24–Feb 14 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Dec 20–Jan 17 (sow outdoors) | Sep 7–21 (sowing) |
| Onion (bulbing) | Nov 22–Dec 6 | Jan 3–17 (transplant) | – |
| Green onion / scallion | – | Jan 3–31 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Leek | Nov 22–Dec 6 | Jan 17–31 (transplant) | – |
| Garlic | – | – | Oct 19–Nov 16 (sowing) |
| Shallot | – | Jan 3–17 (transplant) | Oct 19–Nov 16 (sowing) |
| Potato | – | Jan 17–31 (transplant) | Aug 10–24 (transplant) |
| Sweet potato | – | Mar 7–21 (transplant) | – |
| Sweet corn | – | Feb 21–Mar 7 (sow outdoors) | – |
| Bean, bush (snap) | – | Feb 21–Mar 7 (sow outdoors) | Sep 7–21 (sowing) |
| Bean, pole | – | Feb 21–Mar 7 (sow outdoors) | – |
| Lima bean | – | Feb 28–Mar 14 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 7–28 (sow outdoors) | – |
| Cucumber | Jan 17–24 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | Sep 7–21 (sowing) |
| Summer squash / zucchini | Jan 17–24 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | Sep 7–21 (sowing) |
| Winter squash | Jan 17–24 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | – |
| Pumpkin | – | Feb 21–Mar 7 (sow outdoors) | – |
| Watermelon | Jan 17–24 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | – |
| Cantaloupe / muskmelon | Jan 17–24 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | – |
| Okra | Jan 3–17 | Feb 28–Mar 14 (transplant) Feb 28–Mar 14 (sow outdoors) | – |
| Celery | Nov 22–Dec 6 | Feb 21–28 (transplant) | – |
| Basil | Jan 3–17 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | – |
| Cilantro | – | Jan 31–Feb 28 (sow outdoors) | Oct 5–19 (sowing) |
| Parsley | Dec 6–20 | Jan 31–Feb 14 (transplant) Jan 24–Feb 14 (sow outdoors) | – |
| Dill | – | Feb 14–28 (sow outdoors) | Oct 5–19 (sowing) |
| Sunflower | – | Feb 14–28 (sow outdoors) | – |
| Asparagus (crowns) | – | Jan 17–31 (transplant) | – |
| Rhubarb (crowns) | – | Jan 17–31 (transplant) | – |
| Strawberry (plants) | – | Jan 17–31 (transplant) | Sep 21–Oct 19 (transplant) |
Typical ranges from university extension planting calendars, adjusted to your frost dates. Probabilities, not guarantees. Fall windows that would overlap spring planting are left out, as are fall crops of frost-tender plants where the frost-free season is under 210 days.
Where these numbers come from
Station: Coalinga, CA (NOAA GHCN-Daily ID USC00041864), elevation 670 ft, 18.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Paso Robles Muni AP, CA | 19 mi | Apr 4 | Nov 5 |
| Priest Valley, CA | 19 mi | May 8 | Oct 22 |
| Paso Robles, CA | 22 mi | Mar 15 | Nov 10 |
The average last-frost dates of these stations span 87 days, a rough guide to local variation. See data sources & methods.
Frost questions for 93451
When is the last frost in 93451?
The average (50% chance) last spring freeze of 32°F for ZIP 93451 is February 14. For a more cautious planting date, use March 8, when only 1 year in 10 still sees a later freeze.
When is the first frost in 93451?
The average first fall freeze is November 30. In 1 year in 10 it comes by November 15.
What hardiness zone is 93451?
ZIP 93451 is in USDA zone 8b (15 to 20°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 93451 right now?
This page shows the latest 2-inch and 4-inch soil temperature from the nearest public soil station (USDA SCAN, NOAA USCRN or TexMesonet), or a labeled estimate when no station is close, against the 50–55°F spring pre-emergent band.
Nearby ZIP codes
93210 Coalinga 93450 San Ardo 93446 El Paso de Robles (Paso Robles) 93426 Oak Shores 93954 San Lucas 93461 Shandon 93204 Avenal 93932 Lockwood
Other ZIP codes in Monterey County
93426 93450 93901 93905 93906 93907 93908 93920 93921 93923 93924 93925 93926 93927 93928 93930 93932 93933 93940 93943 93944 93950 93953 93954 All Monterey County frost dates · California frost dates
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