Frost dates for Warrenton 3 Se, Virginia
Half of years have their last spring frost by April 9 — but 1 year in 10 still frosts after April 28.
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 28
- 1 year in 5
- April 20
- 3 years in 10
- April 15
- 2 years in 5
- April 12
- Half of years (the median)
- April 9
First fall freeze
- Freeze this early in 1 year in 10
- October 18
- 1 year in 5
- October 23
- 3 years in 10
- October 27
- 2 years in 5
- October 29
- Half of years (the median)
- November 1
- Growing season
- about 205 days
- Hardiness zone nearby
- 7a
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, station Warrenton 3 Se (USC00448888), at 38.68, -77.77. 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
20106, 20115, 20119, 20136, 20137, 20139, 20144, 20155, 20169, 20181, 20186, 20187, 20198, 22172, 22433, 22556, 22643, 22712, 22714, 22718, 22720, 22724, 22726, 22728, 22734, 22736, 22741, 22742.
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.
- Vienna, VA — last frost by April 14
- Purcellville Hcn, VA — last frost by April 16
- Corbin, VA — last frost by April 14
- Somerset, VA — last frost by April 17
- Damascus 3 Ssw, MD — last frost by April 14
- Upper Marlboro 3 Nnw, MD — last frost by April 9
Other stations in Virginia.
- Ashland Hanover Co Muni Ap, VA — last frost by April 10
- W Pt 2 Nw, VA — last frost by April 6
- Painter 2 W, VA — last frost by April 4
- Langley Afb, VA — last frost by March 24
- Roanoke Rgnl Ap, VA — last frost by April 3
- Fentress Naas, VA — last frost by March 23
- Richlands, VA — last frost by April 27
- Breaks Interstate Park, VA — last frost by April 22