Last frost date in Fort Morgan, Colorado

May 6

Average last frost in spring. In an early year (1 in 10) it's over by April 23; in a late year (1 in 10) it comes after May 19.

October 6

Average first frost in fall. 1 year in 10 it comes by September 24.

Source: NOAA U.S. Climate Normals 1991–2020, station Ft Morgan (USC00053038), 4.3 miles from Fort Morgan, elevation 4,376 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.

What to plant now

Frost dates for Fort Morgan, Colorado
Early yearAverageLate year
Last frost in springApr 23May 6May 19
First frost in fallSept 24Oct 6Oct 18

An early or late year is one in 10: 1 year in 10 the frost comes before the early date, and 1 year in 10 after the late date.

Frost-free days in an average year: 153

Planting calendar for Fort Morgan

Fall planting

USDA dates for places whose average first freeze is about October 10 (Fort Morgan: October 6).

USDA lists chervil and chives, garlic, horseradish, leeks, onion plants, onion seed, onion sets, garden peas, shallots as generally spring-planted here.

Spring planting

USDA dates for places whose average last freeze is about May 10 (Fort Morgan: May 6).

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5 (earliest safe spring and latest safe fall dates), applied to this place's NOAA frost dates. “Plants” means setting out transplants, not sowing seed. How we match the table.

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