Fall in zone 6aPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 45805 (Lima, OH)
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, Lima Wwtp, OH (2 miles away).
- Average last spring frostApr 2450% chance of a 32°F freeze after this date
- Average first fall frostOct 2450% chance of a 32°F freeze by this date
- Growing season (frost-free)182 daysmedian, 32°F threshold
- USDA hardiness zone6a-10 to -5°F avg. coldest night
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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
No soil station with a fresh reading within 62 miles.
4-inch depth
No soil station with a fresh reading within 62 miles.
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 45805 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
No soil reading near this ZIP. Typical extension timing for your region: spring mid-April to early May.
Fertilizer window
Lawn region: North (cool-season). 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.
Your average first frost is Oct 24: 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) | Apr 12 |
| 50% (the "average" last frost) | Apr 24 |
| 10% (cautious: only 1 year in 10 freezes later) | May 11 |
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) | Oct 10 |
| 50% (the "average" first frost) | Oct 24 |
| 90% (late: most years have frozen by now) | Nov 5 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 3 | Oct 13 |
| 32°F (freeze) | Apr 24 | Oct 24 |
| 28°F (hard freeze) | Apr 14 | Nov 3 |
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 45805
Dates count from your average last spring frost (Apr 24) and first fall frost (Oct 24). 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 | Feb 27–Mar 13 | May 1–15 (transplant) | – |
| Pepper (sweet and hot) | Feb 13–27 | May 8–22 (transplant) | – |
| Eggplant | Feb 13–27 | May 8–22 (transplant) | – |
| Tomatillo | Feb 27–Mar 13 | May 1–15 (transplant) | – |
| Lettuce | Feb 27–Mar 13 | Apr 3–24 (transplant) Mar 27–May 8 (sow outdoors) | Aug 29–Sep 19 (transplant) Aug 15–Sep 12 (sowing) |
| Spinach | – | Mar 13–Apr 3 (sow outdoors) | Aug 29–Sep 19 (sowing) |
| Kale | Feb 27–Mar 13 | Mar 27–Apr 10 (transplant) Mar 27–Apr 10 (sow outdoors) | Aug 1–29 (transplant) Jul 18–Aug 15 (sowing) |
| Collards | Feb 27–Mar 13 | Mar 27–Apr 24 (transplant) Mar 27–Apr 24 (sow outdoors) | Aug 1–29 (transplant) Jul 18–Aug 15 (sowing) |
| Broccoli | Feb 13–27 | Mar 27–Apr 10 (transplant) | Jul 18–Aug 15 (transplant) |
| Cabbage | Feb 13–27 | Mar 27–Apr 10 (transplant) | Jul 18–Aug 15 (transplant) |
| Cauliflower | Feb 13–27 | Apr 10–24 (transplant) | Jul 18–Aug 15 (transplant) |
| Brussels sprouts | Jan 30–Feb 13 | Mar 27–Apr 10 (transplant) | Jul 4–25 (transplant) |
| Kohlrabi | Feb 27–Mar 13 | Mar 27–Apr 10 (transplant) Mar 27–Apr 10 (sow outdoors) | Aug 15–29 (sowing) |
| Bok choy / Asian greens | – | Mar 27–Apr 10 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Arugula | – | Mar 27–Apr 24 (sow outdoors) | Aug 29–Sep 26 (sowing) |
| Mustard greens | – | Mar 27–Apr 17 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Swiss chard | Mar 13–27 | Apr 10–May 1 (transplant) Apr 10–May 8 (sow outdoors) | Aug 15–29 (sowing) |
| Beet | – | Mar 27–Apr 24 (sow outdoors) | Aug 15–29 (sowing) |
| Carrot | – | Apr 3–May 1 (sow outdoors) | Aug 1–15 (sowing) |
| Radish | – | Mar 20–May 1 (sow outdoors) | Sep 12–26 (sowing) |
| Turnip | – | Mar 27–Apr 17 (sow outdoors) | Aug 15–29 (sowing) |
| Parsnip | – | Apr 3–24 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 27–Mar 27 (sow outdoors) | Aug 1–15 (sowing) |
| Onion (bulbing) | Jan 30–Feb 13 | Mar 13–27 (transplant) | – |
| Green onion / scallion | – | Mar 13–Apr 10 (sow outdoors) | Aug 15–29 (sowing) |
| Leek | Jan 30–Feb 13 | Mar 27–Apr 10 (transplant) | – |
| Garlic | – | – | Sep 12–Oct 10 (sowing) |
| Shallot | – | Mar 13–27 (transplant) | Sep 12–Oct 10 (sowing) |
| Potato | – | Mar 27–Apr 10 (transplant) | Jul 4–18 (transplant) |
| Sweet potato | – | May 15–29 (transplant) | – |
| Sweet corn | – | May 1–15 (sow outdoors) | – |
| Bean, bush (snap) | – | May 1–15 (sow outdoors) | – |
| Bean, pole | – | May 1–15 (sow outdoors) | – |
| Lima bean | – | May 8–22 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 15–Jun 5 (sow outdoors) | – |
| Cucumber | Mar 27–Apr 3 | May 1–15 (transplant) May 1–15 (sow outdoors) | – |
| Summer squash / zucchini | Mar 27–Apr 3 | May 1–15 (transplant) May 1–15 (sow outdoors) | – |
| Winter squash | Mar 27–Apr 3 | May 1–15 (transplant) May 1–15 (sow outdoors) | – |
| Pumpkin | – | May 1–15 (sow outdoors) | – |
| Watermelon | Mar 27–Apr 3 | May 8–22 (transplant) May 8–22 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 27–Apr 3 | May 8–22 (transplant) May 8–22 (sow outdoors) | – |
| Okra | Mar 13–27 | May 8–22 (transplant) May 8–22 (sow outdoors) | – |
| Celery | Jan 30–Feb 13 | May 1–8 (transplant) | – |
| Basil | Mar 13–27 | May 1–15 (transplant) May 1–15 (sow outdoors) | – |
| Cilantro | – | Apr 10–May 8 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Parsley | Feb 13–27 | Apr 10–24 (transplant) Apr 3–24 (sow outdoors) | – |
| Dill | – | Apr 24–May 8 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Sunflower | – | Apr 24–May 8 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 27–Apr 10 (transplant) | – |
| Rhubarb (crowns) | – | Mar 27–Apr 10 (transplant) | – |
| Strawberry (plants) | – | Mar 27–Apr 10 (transplant) | Aug 15–Sep 12 (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: Lima Wwtp, OH (NOAA GHCN-Daily ID USC00334551), elevation 850 ft, 1.7 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Lima Allen Co AP, OH | 7 mi | Apr 22 | Oct 22 |
| Pandora, OH | 18 mi | Apr 23 | Oct 22 |
| Celina 3 NE, OH | 22 mi | Apr 27 | Oct 19 |
The average last-frost dates of these stations span 5 days, a rough guide to local variation. See data sources & methods.
Frost questions for 45805
When is the last frost in 45805?
The average (50% chance) last spring freeze of 32°F for ZIP 45805 is April 24. For a more cautious planting date, use May 11, when only 1 year in 10 still sees a later freeze.
When is the first frost in 45805?
The average first fall freeze is October 24. In 1 year in 10 it comes by October 10.
What hardiness zone is 45805?
ZIP 45805 is in USDA zone 6a (-10 to -5°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 45805 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
45806 Fort Shawnee 45807 Gomer 45804 Lima 45801 Lima 45809 Gomer 45820 Cairo 45819 Buckland 45888 Uniopolis
Other ZIP codes in Allen County
45801 45804 45806 45807 45808 45809 45817 45820 45833 45850 45854 45887 All Allen County frost dates · Ohio frost dates
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- Freeze alerts
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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.