Stanton Frost Dates and Growing Season
Frost and the growing season
NOAA's 1991-2020 freeze probabilities for Stanton 2W. A median date has an even chance of a later freeze in spring, or an earlier one in fall.
The last spring freeze typically comes around April 19 and the first fall freeze around October 20, a growing season of about 184 days.
- Median at 36°F
- last April 29, first October 13
- Median at 32°F
- last April 19, first October 20
- Median at 28°F
- last April 6, first October 30
Last freeze in spring
The chance of a later freeze than the date shown. At 10 percent, one spring in ten still freezes after the date; planting after the 10 percent date for 32°F is the cautious choice.
| Threshold | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 15 | May 10 | May 6 | May 2 | Apr 29 | Apr 26 | Apr 22 | Apr 20 | Apr 16 |
| 32°F | May 5 | Apr 30 | Apr 25 | Apr 22 | Apr 19 | Apr 16 | Apr 13 | Apr 9 | Apr 4 |
| 28°F | Apr 23 | Apr 17 | Apr 13 | Apr 9 | Apr 6 | Apr 3 | Apr 1 | Mar 30 | Mar 22 |
| 24°F | Apr 10 | Apr 4 | Apr 1 | Mar 30 | Mar 27 | Mar 24 | Mar 20 | Mar 16 | Mar 10 |
| 20°F | Mar 30 | Mar 26 | Mar 22 | Mar 17 | Mar 14 | Mar 11 | Mar 7 | Mar 2 | Feb 23 |
| 16°F | Mar 22 | Mar 16 | Mar 13 | Mar 8 | Mar 5 | Mar 1 | Feb 24 | Feb 16 | Feb 7 |
First freeze in fall
The chance of an earlier freeze than the date shown. At 10 percent, one fall in ten freezes before the date.
| Threshold | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 2 | Oct 6 | Oct 8 | Oct 10 | Oct 13 | Oct 15 | Oct 17 | Oct 20 | Oct 23 |
| 32°F | Oct 10 | Oct 13 | Oct 16 | Oct 18 | Oct 20 | Oct 22 | Oct 24 | Oct 27 | Oct 31 |
| 28°F | Oct 17 | Oct 21 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 7 | Nov 13 |
| 24°F | Oct 29 | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 13 | Nov 17 | Nov 22 | Nov 29 |
| 20°F | Nov 7 | Nov 12 | Nov 15 | Nov 19 | Nov 23 | Nov 27 | Dec 1 | Dec 5 | Dec 11 |
| 16°F | Nov 15 | Nov 23 | Nov 28 | Dec 1 | Dec 5 | Dec 11 | Dec 16 | Dec 22 | Dec 30 |
Growing season length
Days between the last spring and first fall freeze at each threshold, with the chance of a season at least that long.
| Threshold | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | 181 | 176 | 173 | 169 | 166 | 162 | 158 | 153 | 146 |
| 32°F | 203 | 197 | 192 | 188 | 184 | 180 | 176 | 171 | 163 |
| 28°F | 226 | 219 | 214 | 209 | 206 | 201 | 197 | 191 | 183 |
| 24°F | 256 | 245 | 239 | 234 | 229 | 224 | 220 | 215 | 207 |
| 20°F | 282 | 273 | 266 | 260 | 255 | 250 | 245 | 238 | 231 |
| 16°F | 308 | 299 | 293 | 286 | 280 | 274 | 268 | 260 | 252 |
How often it gets that cold
The share of years with at least one night at or below each temperature.
- 36°F or colder
- 100% of years
- 32°F or colder
- 100% of years
- 28°F or colder
- 100% of years
- 24°F or colder
- 100% of years
- 20°F or colder
- 100% of years
- 16°F or colder
- 100% of years
Degree days
A degree day is one degree of the daily mean temperature beyond a base, for one day. Heating degree days count cold (the fuel a house burns), cooling degree days heat, growing degree days the warmth a crop needs; each crop has its own base.
- Heating degree days, base 65°F
- 4,735
- Cooling degree days, base 65°F
- 981
- Growing degree days, base 40°F
- 6,165
- Growing degree days, base 45°F
- 4,823
- Growing degree days, base 50°F
- 3,637
- Growing degree days, base 55°F
- 2,604
- Growing degree days, base 60°F
- 1,718
Growing degree days by month, base 50°F
Heating and cooling by month
| Month | Heating DD | Cooling DD | Growing DD 50 |
|---|---|---|---|
| January | 995 | 0 | 12 |
| February | 803 | 1 | 21 |
| March | 641 | 3 | 67 |
| April | 330 | 15 | 201 |
| May | 128 | 77 | 421 |
| June | 11 | 195 | 635 |
| July | 2 | 293 | 756 |
| August | 3 | 247 | 708 |
| September | 54 | 130 | 527 |
| October | 307 | 20 | 219 |
| November | 596 | 1 | 54 |
| December | 865 | 0 | 17 |
What this means
NOAA computes these from the daily lows at the station over 1991-2020, fitting the dates of each year's last and first freeze to a distribution, so a date can be stated at any level of risk. 36°F is a frost risk for tender plants on a clear, calm night, since the ground cools below the air above it; 32°F is a freeze; 28°F is a hard freeze that kills most annuals.
The station is 3.8 km from Stanton. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.
More
Sources
NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USC00157652 (Stanton 2W). Public domain.