Frost dates for 59339Lindsay, MT
The average last spring frost in Lindsay is May 26 and the average first fall frost is September 17, giving a typical growing season of about 113 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 26
- Average first fall frost
- Sep 17
- Growing season
- 113 days
Safer after Jun 13 (1-in-10 risk)
Possible by Sep 1 (1-in-10 risk)
Last frost typically in 211 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 23 · Jun 7 · Jun 30 | Aug 19 · Sep 5 · Sep 20 | 89 days | 100% |
| Frost / freeze (32°F) | May 13 · May 26 · Jun 13 | Sep 1 · Sep 17 · Sep 29 | 113 days | 100% |
| Hard freeze (28°F) | May 2 · May 15 · May 30 | Sep 13 · Sep 27 · Oct 7 | 133 days | 100% |
Planting calendar for Lindsay
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 25 – Jul 1 |
| Tomatoes | Transplant outdoors | Jun 11 – May 28 |
| Peppers | Start seeds indoors | Apr 25 – May 26 |
| Peppers | Transplant outdoors | Jun 25 – Jul 26 |
| Eggplant | Start seeds indoors | May 12 – Jun 10 |
| Eggplant | Transplant outdoors | Jun 25 – Jul 26 |
| Cucumbers | Sow outdoors | Jun 25 – Jun 7 |
| Summer squash | Sow outdoors | Jun 11 – Jul 26 |
| Winter squash & pumpkins | Sow outdoors | Jun 25 – Jul 26 |
| Snap beans | Sow outdoors | Jun 11 – Jun 30 |
| Sweet corn | Sow outdoors | Jun 11 – May 28 |
| Watermelon & cantaloupe | Sow outdoors | Jun 25 – Jul 26 |
| Okra | Sow outdoors | Jun 18 – Jul 11 |
| Peas | Sow outdoors (spring) | Apr 25 – Jun 10 |
| Potatoes | Plant outdoors (spring) | Apr 25 – Jun 25 |
| Onions | Start seeds indoors (spring) | Mar 14 – Apr 10 |
| Onions | Transplant outdoors (spring) | May 12 – Jun 10 |
| Broccoli | Start seeds indoors (spring) | Apr 7 – May 11 |
| Broccoli | Transplant outdoors (spring) | May 12 – Jun 10 |
| Broccoli | Start seeds indoors (fall) | May 18 – May 28 |
| Broccoli | Transplant outdoors (fall) | Jun 17 – Jun 28 |
| Cabbage | Start seeds indoors (spring) | Mar 28 – Apr 25 |
| Cabbage | Transplant outdoors (spring) | Apr 25 – May 26 |
| Cabbage | Start seeds indoors (fall) | May 8 – Jun 7 |
| Cabbage | Transplant outdoors (fall) | Jun 7 – Jul 8 |
| Leaf lettuce | Sow outdoors (spring) | Apr 25 – Jul 11 |
| Leaf lettuce | Sow outdoors (fall) | Jun 7 – Jul 24 |
| Spinach | Sow outdoors (spring) | Apr 18 – Jun 1 |
| Spinach | Sow outdoors (fall) | Jun 24 – Jul 29 |
| Radishes | Sow outdoors (spring) | Apr 25 – Jun 15 |
| Radishes | Sow outdoors (fall) | Jun 7 – Aug 8 |
| Kale | Sow outdoors (spring) | May 12 – Jun 1 |
| Kale | Sow outdoors (fall) | May 31 – Jul 8 |
| Carrots | Sow outdoors (spring) | May 26 – Jul 11 |
| Carrots | Sow outdoors (fall) | May 8 – Jun 23 |
| Garlic | Plant outdoors (fall) | Sep 7 – Oct 8 |
Where these dates come from
ZIP code 59339 is matched to the NOAA station Terry 21 Nnw, MT, 26.2 km away, at 3,142 ft elevation (301 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Terry 21 Nnw, MT (used) | 3,142 ft | May 26 | Sep 17 |
| Circle, MT | 2,480 ft | May 17 | Sep 22 |
| Glendive, MT | 2,075 ft | May 3 | Oct 4 |
| Terry, MT | 2,250 ft | May 12 | Sep 28 |
Frost dates near Lindsay
- Bloomfield, MT 59315 · last May 17, first Sep 22
- Glendive, MT 59330 · last May 3, first Oct 4
- Circle, MT 59215 · last May 17, first Sep 22
- Brockway, MT 59214 · last May 20, first Sep 19
- Terry, MT 59349 · last May 12, first Sep 28
- Fallon, MT 59326 · last May 20, first Sep 22
- Richey, MT 59259 · last May 16, first Sep 22
- Mildred, MT 59341 · last May 20, first Sep 22
Frequently asked questions
- When is the last frost in Lindsay, MT?
- For ZIP code 59339, the average last spring frost (32°F) is May 26, based on NOAA 1991-2020 climate normals for the Terry 21 Nnw, MT weather station. There is a 1-in-10 chance of a frost after June 13.
- When is the first frost in Lindsay, MT?
- The average first fall frost (32°F) is September 17. There is a 1-in-10 chance of frost by September 1, so tender plants are at risk from that point on.
- How long is the growing season in 59339?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 113 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.