Frost dates for 84045Saratoga Springs, UT
The average last spring frost in Saratoga Springs is April 18 and the average first fall frost is October 22, giving a typical growing season of about 185 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 18
- Average first fall frost
- Oct 22
- Growing season
- 185 days
Safer after May 6 (1-in-10 risk)
Possible by Oct 7 (1-in-10 risk)
Last frost typically in 174 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 17 · May 2 · May 22 | Sep 27 · Oct 10 · Oct 23 | 158 days | 100% |
| Frost / freeze (32°F) | Mar 31 · Apr 18 · May 6 | Oct 7 · Oct 22 · Nov 5 | 185 days | 100% |
| Hard freeze (28°F) | Mar 7 · Mar 31 · Apr 17 | Oct 18 · Nov 2 · Nov 18 | 216 days | 100% |
Planting calendar for Saratoga Springs
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 18 – May 24 |
| Tomatoes | Transplant outdoors | May 4 – Jul 2 |
| Peppers | Start seeds indoors | Mar 18 – Apr 18 |
| Peppers | Transplant outdoors | May 18 – Jun 18 |
| Eggplant | Start seeds indoors | Apr 4 – May 3 |
| Eggplant | Transplant outdoors | May 18 – Jun 18 |
| Cucumbers | Sow outdoors | May 18 – Jul 12 |
| Summer squash | Sow outdoors | May 4 – Jun 18 |
| Winter squash & pumpkins | Sow outdoors | May 18 – Jun 18 |
| Snap beans | Sow outdoors | May 4 – Aug 4 |
| Sweet corn | Sow outdoors | May 4 – Jul 2 |
| Watermelon & cantaloupe | Sow outdoors | May 18 – Jun 18 |
| Okra | Sow outdoors | May 11 – Jun 3 |
| Peas | Sow outdoors (spring) | Mar 18 – May 3 |
| Potatoes | Plant outdoors (spring) | Mar 18 – May 18 |
| Onions | Start seeds indoors (spring) | Feb 4 – Mar 3 |
| Onions | Transplant outdoors (spring) | Apr 4 – May 3 |
| Broccoli | Start seeds indoors (spring) | Feb 28 – Apr 3 |
| Broccoli | Transplant outdoors (spring) | Apr 4 – May 3 |
| Broccoli | Start seeds indoors (fall) | Jun 22 – Jul 2 |
| Broccoli | Transplant outdoors (fall) | Jul 22 – Aug 2 |
| Cabbage | Start seeds indoors (spring) | Feb 18 – Mar 18 |
| Cabbage | Transplant outdoors (spring) | Mar 18 – Apr 18 |
| Cabbage | Start seeds indoors (fall) | Jun 12 – Jul 12 |
| Cabbage | Transplant outdoors (fall) | Jul 12 – Aug 12 |
| Leaf lettuce | Sow outdoors (spring) | Mar 18 – Jun 3 |
| Leaf lettuce | Sow outdoors (fall) | Jul 12 – Aug 28 |
| Spinach | Sow outdoors (spring) | Mar 11 – Apr 24 |
| Spinach | Sow outdoors (fall) | Jul 29 – Sep 2 |
| Radishes | Sow outdoors (spring) | Mar 18 – May 8 |
| Radishes | Sow outdoors (fall) | Jul 12 – Sep 12 |
| Kale | Sow outdoors (spring) | Apr 4 – Apr 24 |
| Kale | Sow outdoors (fall) | Jul 5 – Aug 12 |
| Carrots | Sow outdoors (spring) | Apr 18 – Jun 3 |
| Carrots | Sow outdoors (fall) | Jun 12 – Jul 28 |
| Garlic | Plant outdoors (fall) | Oct 12 – Nov 12 |
Where these dates come from
ZIP code 84045 is matched to the NOAA station Draper-Point Of Mtn, UT, 15.4 km away, at 4,506 ft elevation (5 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Draper-Point Of Mtn, UT (used) | 4,506 ft | Apr 18 | Oct 22 |
| Utah Lake Lehi, UT | 4,505 ft | Apr 30 | Oct 9 |
| Pleasant Grove, UT | 4,692 ft | Apr 17 | Oct 25 |
| Orem Trtmt Plt, UT | 4,510 ft | Apr 19 | Oct 19 |
Frost dates near Saratoga Springs
- Lehi, UT 84043 · last Apr 18, first Oct 22
- Eagle Mountain, UT 84005 · last Jun 2, first Sep 16
- American Fork, UT 84003 · last Apr 17, first Oct 25
- Provo, UT 84602 · last Apr 17, first Oct 25
- Pleasant Grove, UT 84062 · last Apr 17, first Oct 25
- Lindon, UT 84042 · last Apr 17, first Oct 25
- Riverton, UT 84065 · last Apr 18, first Oct 22
- Alpine, UT 84004 · last May 3, first Oct 12
Frequently asked questions
- When is the last frost in Saratoga Springs, UT?
- For ZIP code 84045, the average last spring frost (32°F) is April 18, based on NOAA 1991-2020 climate normals for the Draper-Point Of Mtn, UT weather station. There is a 1-in-10 chance of a frost after May 6.
- When is the first frost in Saratoga Springs, UT?
- The average first fall frost (32°F) is October 22. There is a 1-in-10 chance of frost by October 7, so tender plants are at risk from that point on.
- How long is the growing season in 84045?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 185 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.