Frost dates for Oakland Metro Intl Ap, California
Half of years have their last spring frost by January 7 — but 1 year in 10 still frosts after February 8.
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
- February 8
- 1 year in 5
- January 30
- 3 years in 10
- January 22
- 2 years in 5
- January 14
- Half of years (the median)
- January 7
First fall freeze
- Freeze this early in 1 year in 10
- November 30
- 1 year in 5
- December 6
- 3 years in 10
- December 10
- 2 years in 5
- December 16
- Half of years (the median)
- December 23
- Growing season
- about 356 days
- Hardiness zones nearby
- 10a, 10b, 9b
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, station Oakland Metro Intl Ap (USW00023230), at 37.72, -122.22. 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
94065, 94401, 94402, 94403, 94404, 94501, 94502, 94507, 94516, 94518, 94519, 94520, 94523, 94530, 94541, 94542, 94544, 94545, 94546, 94549, 94552, 94553, 94555, 94556, 94563, 94564, 94575, 94577, 94578, 94579, 94580, 94595, 94596, 94597, 94598, 94601, 94602, 94603, 94605, 94606, 94607, 94608, 94609, 94610, 94611, 94612, 94613, 94618, 94619, 94621, 94702, 94703, 94704, 94705, 94706, 94707, 94708, 94709, 94710, 94720, 94803, 94804, 94805, 94806, 94850.
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.
- San Francisco Oceanside, CA — last frost by December 30
- Livermore Hcn, CA — last frost by February 15
- Skyline Ridge Preserve, CA — last frost by March 21
- Mt Hamilton, CA — last frost by May 3
- Lodi Hcn, CA — last frost by February 9
- Woodland 1 Wnw, CA — last frost by February 7
Other stations in California.
- Auburn, CA — last frost by February 25
- Fresno 5 Ne, CA — last frost by January 30
- Woodland Hills Pierce College, CA — last frost by January 24
- Burbank Glendale Pasadena Ap, CA — last frost by December 31
- Wrightwood, CA — last frost by May 16
- Torrance Ap, CA — last frost by January 9
- Lake Arrowhead, CA — last frost by May 5
- Tustin Irvine Rch Hcn, CA — last frost by January 5