Frost dates for 89418Imlay, NV
The average last spring frost in Imlay is May 17 and the average first fall frost is September 27, giving a typical growing season of about 131 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 17
- Average first fall frost
- Sep 27
- Growing season
- 131 days
Safer after Jun 8 (1-in-10 risk)
Possible by Sep 13 (1-in-10 risk)
Last frost typically in 203 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) | May 12 · Jun 1 · Jun 17 | Sep 2 · Sep 16 · Sep 30 | 105 days | 100% |
| Frost / freeze (32°F) | Apr 30 · May 17 · Jun 8 | Sep 13 · Sep 27 · Oct 9 | 131 days | 100% |
| Hard freeze (28°F) | Apr 17 · May 3 · May 27 | Sep 24 · Oct 6 · Oct 21 | 156 days | 100% |
Planting calendar for Imlay
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 | Apr 16 – Jun 22 |
| Tomatoes | Transplant outdoors | Jun 2 – Jun 7 |
| Peppers | Start seeds indoors | Apr 16 – May 17 |
| Peppers | Transplant outdoors | Jun 16 – Jul 17 |
| Eggplant | Start seeds indoors | May 3 – Jun 1 |
| Eggplant | Transplant outdoors | Jun 16 – Jul 17 |
| Cucumbers | Sow outdoors | Jun 16 – Jun 17 |
| Summer squash | Sow outdoors | Jun 2 – Jul 17 |
| Winter squash & pumpkins | Sow outdoors | Jun 16 – Jul 17 |
| Snap beans | Sow outdoors | Jun 2 – Jul 10 |
| Sweet corn | Sow outdoors | Jun 2 – Jun 7 |
| Watermelon & cantaloupe | Sow outdoors | Jun 16 – Jul 17 |
| Okra | Sow outdoors | Jun 9 – Jul 2 |
| Peas | Sow outdoors (spring) | Apr 16 – Jun 1 |
| Potatoes | Plant outdoors (spring) | Apr 16 – Jun 16 |
| Onions | Start seeds indoors (spring) | Mar 5 – Apr 1 |
| Onions | Transplant outdoors (spring) | May 3 – Jun 1 |
| Broccoli | Start seeds indoors (spring) | Mar 29 – May 2 |
| Broccoli | Transplant outdoors (spring) | May 3 – Jun 1 |
| Broccoli | Start seeds indoors (fall) | May 28 – Jun 7 |
| Broccoli | Transplant outdoors (fall) | Jun 27 – Jul 8 |
| Cabbage | Start seeds indoors (spring) | Mar 19 – Apr 16 |
| Cabbage | Transplant outdoors (spring) | Apr 16 – May 17 |
| Cabbage | Start seeds indoors (fall) | May 18 – Jun 17 |
| Cabbage | Transplant outdoors (fall) | Jun 17 – Jul 18 |
| Leaf lettuce | Sow outdoors (spring) | Apr 16 – Jul 2 |
| Leaf lettuce | Sow outdoors (fall) | Jun 17 – Aug 3 |
| Spinach | Sow outdoors (spring) | Apr 9 – May 23 |
| Spinach | Sow outdoors (fall) | Jul 4 – Aug 8 |
| Radishes | Sow outdoors (spring) | Apr 16 – Jun 6 |
| Radishes | Sow outdoors (fall) | Jun 17 – Aug 18 |
| Kale | Sow outdoors (spring) | May 3 – May 23 |
| Kale | Sow outdoors (fall) | Jun 10 – Jul 18 |
| Carrots | Sow outdoors (spring) | May 17 – Jul 2 |
| Carrots | Sow outdoors (fall) | May 18 – Jul 3 |
| Garlic | Plant outdoors (fall) | Sep 17 – Oct 18 |
Where these dates come from
ZIP code 89418 is matched to the NOAA station Imlay, NV, 16.2 km away, at 4,260 ft elevation (156 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Imlay, NV (used) | 4,260 ft | May 17 | Sep 27 |
| Rye Patch Dam, NV | 4,135 ft | May 19 | Sep 24 |
| Winnemucca Muni Ap, NV | 4,296 ft | May 31 | Sep 17 |
| Winnemucca 3Ssw, NV | 4,355 ft | May 23 | Sep 29 |
Frost dates near Imlay
- Winnemucca, NV 89445 · last May 23, first Sep 29
- Lovelock, NV 89419 · last May 11, first Oct 2
- Golconda, NV 89414 · last May 16, first Oct 1
- Valmy, NV 89438 · last May 9, first Sep 29
- Battle Mountain, NV 89820 · last May 9, first Sep 29
- Paradise Valley, NV 89426 · last Jun 5, first Sep 13
- Wadsworth, NV 89442 · last May 9, first Oct 1
- Fernley, NV 89408 · last May 9, first Oct 1
Frequently asked questions
- When is the last frost in Imlay, NV?
- For ZIP code 89418, the average last spring frost (32°F) is May 17, based on NOAA 1991-2020 climate normals for the Imlay, NV weather station. There is a 1-in-10 chance of a frost after June 8.
- When is the first frost in Imlay, NV?
- The average first fall frost (32°F) is September 27. There is a 1-in-10 chance of frost by September 13, so tender plants are at risk from that point on.
- How long is the growing season in 89418?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 131 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.