Growing degree days · base 50°F
Growing degree days in Fort Collins, CO
Season to date · since January 1
3,282GDD
Peak accumulated heat
The season has banked substantial heat. Warm-season grass is at its strongest; cool-season grass may be under heat stress and should not be pushed with nitrogen.
This week in Fort Collins
Fort Collins, CO added 122 growing degree days this past week, 17.4 a day, reaching 3,282 for the season. Its warmest day added 19.
| Day | Added | Season total |
|---|---|---|
| Tue | 19 | 3,180 |
| Wed | 17 | 3,197 |
| Thu | 17 | 3,214 |
| Fri | 18 | 3,232 |
| Sat | 16 | 3,249 |
| Sun | 18 | 3,267 |
| Mon | 16 | 3,282 |
PGR reapplication tracking
Plant growth regulator timing uses a Celsius-scale accumulation, not the seasonal Fahrenheit one. This page tracks a 10°C base, which is the Bermuda (warm-season) figure. Trinexapac-ethyl is typically re-sprayed near 200 GDD on cool-season turf and roughly 216 to 230 on warm-season turf, measured from your last application rather than from January. Always follow the product label.
Track GDD from your own spray date →Soil temperature right now in Fort Collins, CO
GDD is a trend indicator. Soil temperature is the signal that actually decides pre-emergent and seeding timing, and it is 67.2°F here at 2 inches.
Full soil report for 80521 →Nearby
Growing degree days near Fort Collins
- Cheyenne, WY42 miles from Fort Collins · ZIP 82001
- Denver, CO58 miles from Fort Collins · ZIP 80202
- Aurora, CO60 miles from Fort Collins · ZIP 80010
- Colorado Springs, CO122 miles from Fort Collins · ZIP 80901
- Santa Fe, NM341 miles from Fort Collins · ZIP 87501
- Provo, UT347 miles from Fort Collins · ZIP 84601
Get this number every morning
This page recalculates when you load it. The app accumulates GDD for Fort Collins, CO daily and tells you when your PGR window opens. Free on iPhone and Android.