Fowler Frost Dates and Growing Season
Frost and the growing season
NOAA's 1991-2020 freeze probabilities for Meade. 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 20 and the first fall freeze around October 22, a growing season of about 183 days.
- Median at 36°F
- last April 30, first October 12
- Median at 32°F
- last April 20, first October 22
- Median at 28°F
- last April 9, first October 29
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 11 | May 7 | May 4 | May 1 | Apr 30 | Apr 27 | Apr 23 | Apr 19 | Apr 15 |
| 32°F | May 3 | Apr 30 | Apr 26 | Apr 23 | Apr 20 | Apr 17 | Apr 13 | Apr 9 | Apr 4 |
| 28°F | Apr 26 | Apr 20 | Apr 17 | Apr 13 | Apr 9 | Apr 5 | Apr 2 | Mar 31 | Mar 24 |
| 24°F | Apr 15 | Apr 8 | Apr 4 | Apr 1 | Mar 29 | Mar 25 | Mar 22 | Mar 16 | Mar 9 |
| 20°F | Apr 4 | Mar 31 | Mar 26 | Mar 21 | Mar 17 | Mar 12 | Mar 8 | Mar 5 | Feb 28 |
| 16°F | Mar 24 | Mar 18 | Mar 13 | Mar 8 | Mar 5 | Mar 2 | Feb 28 | Feb 23 | Feb 15 |
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 | Sep 25 | Oct 1 | Oct 5 | Oct 8 | Oct 12 | Oct 15 | Oct 18 | Oct 20 | Oct 23 |
| 32°F | Oct 5 | Oct 12 | Oct 16 | Oct 19 | Oct 22 | Oct 24 | Oct 26 | Oct 29 | Nov 1 |
| 28°F | Oct 17 | Oct 21 | Oct 24 | Oct 27 | Oct 29 | Nov 1 | Nov 3 | Nov 7 | Nov 12 |
| 24°F | Oct 24 | Oct 29 | Nov 1 | Nov 3 | Nov 6 | Nov 9 | Nov 13 | Nov 16 | Nov 21 |
| 20°F | Oct 31 | Nov 4 | Nov 8 | Nov 12 | Nov 15 | Nov 19 | Nov 23 | Nov 27 | Dec 4 |
| 16°F | Nov 6 | Nov 12 | Nov 17 | Nov 21 | Nov 26 | Nov 29 | Dec 3 | Dec 8 | Dec 17 |
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 | 183 | 176 | 171 | 168 | 164 | 160 | 156 | 150 | 144 |
| 32°F | 203 | 197 | 192 | 187 | 183 | 179 | 175 | 170 | 164 |
| 28°F | 224 | 217 | 212 | 208 | 202 | 198 | 193 | 188 | 181 |
| 24°F | 247 | 239 | 232 | 226 | 222 | 218 | 213 | 207 | 200 |
| 20°F | 268 | 259 | 254 | 249 | 244 | 239 | 233 | 227 | 217 |
| 16°F | 290 | 281 | 274 | 268 | 263 | 259 | 253 | 246 | 237 |
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
- 4,924
- Cooling degree days, base 65°F
- 1,474
- Growing degree days, base 40°F
- 6,519
- Growing degree days, base 45°F
- 5,226
- Growing degree days, base 50°F
- 4,077
- Growing degree days, base 55°F
- 3,074
- Growing degree days, base 60°F
- 2,211
Growing degree days by month, base 50°F
Heating and cooling by month
| Month | Heating DD | Cooling DD | Growing DD 50 |
|---|---|---|---|
| January | 1,014 | 0 | 1 |
| February | 829 | 0 | 8 |
| March | 634 | 1 | 55 |
| April | 368 | 8 | 157 |
| May | 116 | 96 | 451 |
| June | 7 | 289 | 732 |
| July | 1 | 461 | 925 |
| August | 1 | 407 | 871 |
| September | 46 | 189 | 595 |
| October | 292 | 23 | 238 |
| November | 653 | 1 | 41 |
| December | 964 | 0 | 2 |
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 17.3 km from Fowler. 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 USC00145171 (Meade). Public domain.