Fall in zone 6bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 84604 (Provo, UT)
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, Sundance, UT (5 miles away).
- Average last spring frostMay 1750% chance of a 32°F freeze after this date
- Average first fall frostOct 550% chance of a 32°F freeze by this date
- Growing season (frost-free)138 daysmedian, 32°F threshold
- USDA hardiness zone6b-5 to 0°F avg. coldest night
Get The Dial for 84604 (Provo)
Frost and freeze alerts from the NWS forecast for 84604, the spring soil-temperature heads-up for pre-emergent, and a short weekly yard-timing email.
- Freeze alerts
- Soil-temp heads-up
- Weekly yard to-dos
Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.
This week in your yard
As of Oct 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
51°F 50–55°F
24-hour average · latest 48°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Grantsville (47 mi), Morgan (47 mi), Nephi (49 mi).
4-inch depth
51°F 50–55°F
24-hour average · latest 51°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Grantsville (47 mi), Morgan (47 mi), Mountain Home (62 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 84604 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 51°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent window is mostly past. Next: spring, when soil reaches 50°F (typically mid-April to mid-May).
Fertilizer window
Lawn region: Mountain West and High Plains. Timing only; always follow the product label.
- Kentucky bluegrass (cool-season): Early fall: Around Labor Day (late August–September); Late fall: Late October–November, before the ground freezes; Late spring: Optional around Memorial Day. Avoid: Early-spring and midsummer feeding (pushes top growth, favors crabgrass).
Plant now
No vegetable planting windows are open this week.
Prune now
No frost-timed pruning windows are open this week.
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) | May 1 |
| 50% (the "average" last frost) | May 17 |
| 10% (cautious: only 1 year in 10 freezes later) | Jun 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) | Sep 22 |
| 50% (the "average" first frost) | Oct 5 |
| 90% (late: most years have frozen by now) | Oct 19 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Jun 1 | Sep 25 |
| 32°F (freeze) | May 17 | Oct 5 |
| 28°F (hard freeze) | May 2 | Oct 17 |
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 84604
Dates count from your average last spring frost (May 17) and first fall frost (Oct 5). 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 | Mar 22–Apr 5 | May 24–Jun 7 (transplant) | – |
| Pepper (sweet and hot) | Mar 8–22 | May 31–Jun 14 (transplant) | – |
| Eggplant | Mar 8–22 | May 31–Jun 14 (transplant) | – |
| Tomatillo | Mar 22–Apr 5 | May 24–Jun 7 (transplant) | – |
| Lettuce | Mar 22–Apr 5 | Apr 26–May 17 (transplant) Apr 19–May 31 (sow outdoors) | Aug 10–31 (transplant) Jul 27–Aug 24 (sowing) |
| Spinach | – | Apr 5–26 (sow outdoors) | Aug 10–31 (sowing) |
| Kale | Mar 22–Apr 5 | Apr 19–May 3 (transplant) Apr 19–May 3 (sow outdoors) | Jul 13–Aug 10 (transplant) Jun 29–Jul 27 (sowing) |
| Collards | Mar 22–Apr 5 | Apr 19–May 17 (transplant) Apr 19–May 17 (sow outdoors) | Jul 13–Aug 10 (transplant) Jun 29–Jul 27 (sowing) |
| Broccoli | Mar 8–22 | Apr 19–May 3 (transplant) | Jun 29–Jul 27 (transplant) |
| Cabbage | Mar 8–22 | Apr 19–May 3 (transplant) | Jun 29–Jul 27 (transplant) |
| Cauliflower | Mar 8–22 | May 3–17 (transplant) | Jun 29–Jul 27 (transplant) |
| Brussels sprouts | Feb 22–Mar 8 | Apr 19–May 3 (transplant) | Jun 15–Jul 6 (transplant) |
| Kohlrabi | Mar 22–Apr 5 | Apr 19–May 3 (transplant) Apr 19–May 3 (sow outdoors) | Jul 27–Aug 10 (sowing) |
| Bok choy / Asian greens | – | Apr 19–May 3 (sow outdoors) | Aug 10–24 (sowing) |
| Arugula | – | Apr 19–May 17 (sow outdoors) | Aug 10–Sep 7 (sowing) |
| Mustard greens | – | Apr 19–May 10 (sow outdoors) | Aug 10–24 (sowing) |
| Swiss chard | Apr 5–19 | May 3–24 (transplant) May 3–31 (sow outdoors) | Jul 27–Aug 10 (sowing) |
| Beet | – | Apr 19–May 17 (sow outdoors) | Jul 27–Aug 10 (sowing) |
| Carrot | – | Apr 26–May 24 (sow outdoors) | Jul 13–27 (sowing) |
| Radish | – | Apr 12–May 24 (sow outdoors) | Aug 24–Sep 7 (sowing) |
| Turnip | – | Apr 19–May 10 (sow outdoors) | Jul 27–Aug 10 (sowing) |
| Parsnip | – | Apr 26–May 17 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Mar 22–Apr 19 (sow outdoors) | Jul 13–27 (sowing) |
| Onion (bulbing) | Feb 22–Mar 8 | Apr 5–19 (transplant) | – |
| Green onion / scallion | – | Apr 5–May 3 (sow outdoors) | Jul 27–Aug 10 (sowing) |
| Leek | Feb 22–Mar 8 | Apr 19–May 3 (transplant) | – |
| Garlic | – | – | Aug 24–Sep 21 (sowing) |
| Shallot | – | Apr 5–19 (transplant) | Aug 24–Sep 21 (sowing) |
| Potato | – | Apr 19–May 3 (transplant) | Jun 15–29 (transplant) |
| Sweet potato | – | Jun 7–21 (transplant) | – |
| Sweet corn | – | May 24–Jun 7 (sow outdoors) | – |
| Bean, bush (snap) | – | May 24–Jun 7 (sow outdoors) | – |
| Bean, pole | – | May 24–Jun 7 (sow outdoors) | – |
| Lima bean | – | May 31–Jun 14 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jun 7–28 (sow outdoors) | – |
| Cucumber | Apr 19–26 | May 24–Jun 7 (transplant) May 24–Jun 7 (sow outdoors) | – |
| Summer squash / zucchini | Apr 19–26 | May 24–Jun 7 (transplant) May 24–Jun 7 (sow outdoors) | – |
| Winter squash | Apr 19–26 | May 24–Jun 7 (transplant) May 24–Jun 7 (sow outdoors) | – |
| Pumpkin | – | May 24–Jun 7 (sow outdoors) | – |
| Watermelon | Apr 19–26 | May 31–Jun 14 (transplant) May 31–Jun 14 (sow outdoors) | – |
| Cantaloupe / muskmelon | Apr 19–26 | May 31–Jun 14 (transplant) May 31–Jun 14 (sow outdoors) | – |
| Okra | Apr 5–19 | May 31–Jun 14 (transplant) May 31–Jun 14 (sow outdoors) | – |
| Celery | Feb 22–Mar 8 | May 24–31 (transplant) | – |
| Basil | Apr 5–19 | May 24–Jun 7 (transplant) May 24–Jun 7 (sow outdoors) | – |
| Cilantro | – | May 3–31 (sow outdoors) | Aug 10–24 (sowing) |
| Parsley | Mar 8–22 | May 3–17 (transplant) Apr 26–May 17 (sow outdoors) | – |
| Dill | – | May 17–31 (sow outdoors) | Aug 10–24 (sowing) |
| Sunflower | – | May 17–31 (sow outdoors) | – |
| Asparagus (crowns) | – | Apr 19–May 3 (transplant) | – |
| Rhubarb (crowns) | – | Apr 19–May 3 (transplant) | – |
| Strawberry (plants) | – | Apr 19–May 3 (transplant) | Jul 27–Aug 24 (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: Sundance, UT (NOAA GHCN-Daily ID USC00428465), elevation 6,620 ft, 5.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Provo Byu, UT | 6 mi | Apr 18 | Oct 21 |
| Deer Creek Dam, UT | 6 mi | May 28 | Sep 23 |
| Pleasant Grove, UT | 9 mi | Apr 17 | Oct 25 |
The average last-frost dates of these stations span 42 days, a rough guide to local variation. See data sources & methods.
Frost questions for 84604
When is the last frost in 84604?
The average (50% chance) last spring freeze of 32°F for ZIP 84604 is May 17. For a more cautious planting date, use June 8, when only 1 year in 10 still sees a later freeze.
When is the first frost in 84604?
The average first fall freeze is October 5. In 1 year in 10 it comes by September 22.
What hardiness zone is 84604?
ZIP 84604 is in USDA zone 6b (-5 to 0°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 84604 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
84097 Orem 84602 Provo 84057 Orem 84062 Pleasant Grove 84606 Provo 84058 Orem 84042 Lindon 84601 Provo
Other ZIP codes in Utah County
84003 84004 84005 84013 84042 84043 84045 84057 84058 84059 84062 84097 84601 84602 84606 84626 84633 84651 84653 84655 84660 84663 84664 All Utah County frost dates · Utah frost dates
Never miss a frost: get The Dial
Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
- Soil-temp heads-up
- Weekly yard to-dos
Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.