Frost dates for 43420Fremont, OH
The average last spring frost in Fremont is April 26 and the average first fall frost is October 23, giving a typical growing season of about 179 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 26
- Average first fall frost
- Oct 23
- Growing season
- 179 days
Safer after May 13 (1-in-10 risk)
Possible by Oct 8 (1-in-10 risk)
Last frost typically in 175 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 22 · May 6 · May 21 | Sep 27 · Oct 9 · Oct 23 | 157 days | 100% |
| Frost / freeze (32°F) | Apr 11 · Apr 26 · May 13 | Oct 8 · Oct 23 · Nov 4 | 179 days | 100% |
| Hard freeze (28°F) | Mar 31 · Apr 14 · Apr 30 | Oct 21 · Nov 2 · Nov 19 | 203 days | 100% |
Planting calendar for Fremont
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 26 – Jun 1 |
| Tomatoes | Transplant outdoors | May 12 – Jul 3 |
| Peppers | Start seeds indoors | Mar 26 – Apr 26 |
| Peppers | Transplant outdoors | May 26 – Jun 26 |
| Eggplant | Start seeds indoors | Apr 12 – May 11 |
| Eggplant | Transplant outdoors | May 26 – Jun 26 |
| Cucumbers | Sow outdoors | May 26 – Jul 13 |
| Summer squash | Sow outdoors | May 12 – Jun 26 |
| Winter squash & pumpkins | Sow outdoors | May 26 – Jun 26 |
| Snap beans | Sow outdoors | May 12 – Aug 5 |
| Sweet corn | Sow outdoors | May 12 – Jul 3 |
| Watermelon & cantaloupe | Sow outdoors | May 26 – Jun 26 |
| Okra | Sow outdoors | May 19 – Jun 11 |
| Peas | Sow outdoors (spring) | Mar 26 – May 11 |
| Potatoes | Plant outdoors (spring) | Mar 26 – May 26 |
| Onions | Start seeds indoors (spring) | Feb 12 – Mar 11 |
| Onions | Transplant outdoors (spring) | Apr 12 – May 11 |
| Broccoli | Start seeds indoors (spring) | Mar 8 – Apr 11 |
| Broccoli | Transplant outdoors (spring) | Apr 12 – May 11 |
| Broccoli | Start seeds indoors (fall) | Jun 23 – Jul 3 |
| Broccoli | Transplant outdoors (fall) | Jul 23 – Aug 3 |
| Cabbage | Start seeds indoors (spring) | Feb 26 – Mar 26 |
| Cabbage | Transplant outdoors (spring) | Mar 26 – Apr 26 |
| Cabbage | Start seeds indoors (fall) | Jun 13 – Jul 13 |
| Cabbage | Transplant outdoors (fall) | Jul 13 – Aug 13 |
| Leaf lettuce | Sow outdoors (spring) | Mar 26 – Jun 11 |
| Leaf lettuce | Sow outdoors (fall) | Jul 13 – Aug 29 |
| Spinach | Sow outdoors (spring) | Mar 19 – May 2 |
| Spinach | Sow outdoors (fall) | Jul 30 – Sep 3 |
| Radishes | Sow outdoors (spring) | Mar 26 – May 16 |
| Radishes | Sow outdoors (fall) | Jul 13 – Sep 13 |
| Kale | Sow outdoors (spring) | Apr 12 – May 2 |
| Kale | Sow outdoors (fall) | Jul 6 – Aug 13 |
| Carrots | Sow outdoors (spring) | Apr 26 – Jun 11 |
| Carrots | Sow outdoors (fall) | Jun 13 – Jul 29 |
| Garlic | Plant outdoors (fall) | Oct 13 – Nov 13 |
Where these dates come from
ZIP code 43420 is matched to the NOAA station Fremont, OH, 1.8 km away, at 600 ft elevation (27 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Fremont, OH (used) | 600 ft | Apr 26 | Oct 23 |
| Fremont Ag Stn, OH | 664 ft | Apr 21 | Oct 24 |
| Tiffin, OH | 740 ft | Apr 23 | Oct 23 |
| Sandusky, OH | 584 ft | Apr 10 | Nov 5 |
Frost dates near Fremont
- Lindsey, OH 43442 · last Apr 26, first Oct 23
- Clyde, OH 43410 · last Apr 26, first Oct 23
- Old Fort, OH 44861 · last Apr 21, first Oct 24
- Green Springs, OH 44836 · last Apr 21, first Oct 24
- Burgoon, OH 43407 · last Apr 21, first Oct 24
- Bettsville, OH 44815 · last Apr 21, first Oct 24
- Helena, OH 43435 · last Apr 21, first Oct 24
- Gibsonburg, OH 43431 · last Apr 21, first Oct 24
Frequently asked questions
- When is the last frost in Fremont, OH?
- For ZIP code 43420, the average last spring frost (32°F) is April 26, based on NOAA 1991-2020 climate normals for the Fremont, OH weather station. There is a 1-in-10 chance of a frost after May 13.
- When is the first frost in Fremont, OH?
- The average first fall frost (32°F) is October 23. There is a 1-in-10 chance of frost by October 8, so tender plants are at risk from that point on.
- How long is the growing season in 43420?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 179 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.