Frost dates for 68376Humboldt, NE
The average last spring frost in Humboldt is April 23 and the average first fall frost is October 13, giving a typical growing season of about 172 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 23
- Average first fall frost
- Oct 13
- Growing season
- 172 days
Safer after May 7 (1-in-10 risk)
Possible by Sep 28 (1-in-10 risk)
Last frost typically in 172 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 19 · May 3 · May 18 | Sep 20 · Oct 3 · Oct 17 | 153 days | 100% |
| Frost / freeze (32°F) | Apr 7 · Apr 23 · May 7 | Sep 28 · Oct 13 · Oct 26 | 172 days | 100% |
| Hard freeze (28°F) | Mar 31 · Apr 12 · Apr 30 | Oct 9 · Oct 23 · Nov 5 | 192 days | 100% |
Planting calendar for Humboldt
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 23 – May 29 |
| Tomatoes | Transplant outdoors | May 9 – Jun 23 |
| Peppers | Start seeds indoors | Mar 23 – Apr 23 |
| Peppers | Transplant outdoors | May 23 – Jun 23 |
| Eggplant | Start seeds indoors | Apr 9 – May 8 |
| Eggplant | Transplant outdoors | May 23 – Jun 23 |
| Cucumbers | Sow outdoors | May 23 – Jul 3 |
| Summer squash | Sow outdoors | May 9 – Jun 23 |
| Winter squash & pumpkins | Sow outdoors | May 23 – Jun 23 |
| Snap beans | Sow outdoors | May 9 – Jul 26 |
| Sweet corn | Sow outdoors | May 9 – Jun 23 |
| Watermelon & cantaloupe | Sow outdoors | May 23 – Jun 23 |
| Okra | Sow outdoors | May 16 – Jun 8 |
| Peas | Sow outdoors (spring) | Mar 23 – May 8 |
| Potatoes | Plant outdoors (spring) | Mar 23 – May 23 |
| Onions | Start seeds indoors (spring) | Feb 9 – Mar 8 |
| Onions | Transplant outdoors (spring) | Apr 9 – May 8 |
| Broccoli | Start seeds indoors (spring) | Mar 5 – Apr 8 |
| Broccoli | Transplant outdoors (spring) | Apr 9 – May 8 |
| Broccoli | Start seeds indoors (fall) | Jun 13 – Jun 23 |
| Broccoli | Transplant outdoors (fall) | Jul 13 – Jul 24 |
| Cabbage | Start seeds indoors (spring) | Feb 23 – Mar 23 |
| Cabbage | Transplant outdoors (spring) | Mar 23 – Apr 23 |
| Cabbage | Start seeds indoors (fall) | Jun 3 – Jul 3 |
| Cabbage | Transplant outdoors (fall) | Jul 3 – Aug 3 |
| Leaf lettuce | Sow outdoors (spring) | Mar 23 – Jun 8 |
| Leaf lettuce | Sow outdoors (fall) | Jul 3 – Aug 19 |
| Spinach | Sow outdoors (spring) | Mar 16 – Apr 29 |
| Spinach | Sow outdoors (fall) | Jul 20 – Aug 24 |
| Radishes | Sow outdoors (spring) | Mar 23 – May 13 |
| Radishes | Sow outdoors (fall) | Jul 3 – Sep 3 |
| Kale | Sow outdoors (spring) | Apr 9 – Apr 29 |
| Kale | Sow outdoors (fall) | Jun 26 – Aug 3 |
| Carrots | Sow outdoors (spring) | Apr 23 – Jun 8 |
| Carrots | Sow outdoors (fall) | Jun 3 – Jul 19 |
| Garlic | Plant outdoors (fall) | Oct 3 – Nov 3 |
Where these dates come from
ZIP code 68376 is matched to the NOAA station Table Rock 4N, NE, 15.9 km away, at 1,130 ft elevation (152 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Table Rock 4N, NE (used) | 1,130 ft | Apr 23 | Oct 13 |
| Pawnee City, NE | 1,189 ft | Apr 22 | Oct 15 |
| Auburn 5 Ese, NE | 930 ft | Apr 24 | Oct 10 |
| Falls City Brenner Fld, NE | 980 ft | Apr 18 | Oct 17 |
Frost dates near Humboldt
- Dawson, NE 68337 · last Apr 18, first Oct 17
- Table Rock, NE 68447 · last Apr 23, first Oct 13
- Stella, NE 68442 · last Apr 24, first Oct 10
- Du Bois, NE 68345 · last Apr 22, first Oct 15
- Verdon, NE 68457 · last Apr 18, first Oct 17
- Pawnee City, NE 68420 · last Apr 22, first Oct 15
- Salem, NE 68433 · last Apr 18, first Oct 17
- Shubert, NE 68437 · last Apr 24, first Oct 10
Frequently asked questions
- When is the last frost in Humboldt, NE?
- For ZIP code 68376, the average last spring frost (32°F) is April 23, based on NOAA 1991-2020 climate normals for the Table Rock 4N, NE weather station. There is a 1-in-10 chance of a frost after May 7.
- When is the first frost in Humboldt, NE?
- The average first fall frost (32°F) is October 13. There is a 1-in-10 chance of frost by September 28, so tender plants are at risk from that point on.
- How long is the growing season in 68376?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 172 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.