Frost dates for Conroe Montgomery Co Ap, Texas
Half of years have their last spring frost by March 11 — but 1 year in 10 still frosts after April 3.
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 3
- 1 year in 5
- March 27
- 3 years in 10
- March 21
- 2 years in 5
- March 15
- Half of years (the median)
- March 11
First fall freeze
- Freeze this early in 1 year in 10
- November 1
- 1 year in 5
- November 5
- 3 years in 10
- November 10
- 2 years in 5
- November 14
- Half of years (the median)
- November 19
- Growing season
- about 253 days
- Hardiness zones nearby
- 9a, 9b
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, station Conroe Montgomery Co Ap (USW00053902), at 30.36, -95.41. 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
77301, 77302, 77303, 77304, 77306, 77316, 77318, 77328, 77354, 77355, 77356, 77357, 77358, 77362, 77365, 77372, 77373, 77375, 77377, 77378, 77379, 77380, 77381, 77382, 77384, 77385, 77386, 77388, 77389, 77429.
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.
- Houston-Port, TX — last frost by February 2
- Thompsons 3 Wsw, TX — last frost by February 15
- Austin 6S, TX — last frost by March 10
- New Braunfels Hcn, TX — last frost by March 8
- Shreveport Sthrn Hills, LA — last frost by March 12
- Dallas Redbird Ap, TX — last frost by March 6
Other stations in Texas.
- Ft Worth Wsfo, TX — last frost by March 10
- Mckinney Municipal Airport, TX — last frost by March 17
- Lytle 3W, TX — last frost by February 24
- Denton Muni Ap, TX — last frost by March 24