Frost dates for Mckinney Municipal Airport, Texas
Half of years have their last spring frost by March 17 — but 1 year in 10 still frosts after April 5.
Every other site gives you one date. A frost date is not a date: it is a percentile from 30 years of records at a nearby weather station, and planting to the median means losing the crop in half of years. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
- Frost this late in 1 year in 10
- April 5
- 1 year in 5
- March 31
- 3 years in 10
- March 26
- 2 years in 5
- March 21
- Half of years (the median)
- March 17
First fall freeze
- Freeze this early in 1 year in 10
- October 27
- 1 year in 5
- November 2
- 3 years in 10
- November 7
- 2 years in 5
- November 11
- Half of years (the median)
- November 15
- Growing season
- about 241 days
- Hardiness zones nearby
- 8a, 8b
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, station Mckinney Municipal Airport (USC00415766), at 33.19, -96.59. These are that station's own records, unshifted. The further your garden is from it, the less exactly they describe your ground — the planner resolves the nearest station to your own ZIP and lowers its confidence with distance, rather than presenting one number as if it were measured in your yard.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a hundred metres away does not. No table can know that about your garden. Your own logged frosts eventually can.
ZIP codes nearest this station
75002, 75007, 75009, 75010, 75013, 75023, 75024, 75025, 75034, 75035, 75040, 75044, 75048, 75069, 75070, 75071, 75074, 75075, 75078, 75080, 75081, 75082, 75088, 75089, 75093, 75094, 75098, 75166, 75173, 75248, 75252, 75287, 75407, 75409, 75424, 75442, 75454, 75495.
What can I plant here, and when? →
Nearby stations
The nearest stations, and how their last-frost dates compare — the frost gradient across your area, which no single station shows.
- Denton Muni Ap, TX — last frost by March 24
- Dallas Redbird Ap, TX — last frost by March 6
- Ft Worth Wsfo, TX — last frost by March 10
- Norman 3Sse, OK — last frost by April 3
- Shreveport Sthrn Hills, LA — last frost by March 12
- Guthrie 5S Hcn, OK — last frost by April 10
Other stations in Texas.
- Conroe Montgomery Co Ap, TX — last frost by March 11
- Austin 6S, TX — last frost by March 10
- Houston-Port, TX — last frost by February 2
- New Braunfels Hcn, TX — last frost by March 8
- Thompsons 3 Wsw, TX — last frost by February 15
- Lytle 3W, TX — last frost by February 24