Frost dates for Indianapolis Eagle Creek Airport, Indiana
Half of years have their last spring frost by April 12, but 1 year in 10 still frosts after April 29.
A frost date is really a percentile from 30 years of records at a nearby weather station: in about half of years a frost still comes after the median date. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
How often a frost still comes on or after each date.
- 1 year in 10
- April 29
- 1 year in 5
- April 22
- 3 years in 10
- April 19
- 2 years in 5
- April 16
- Half of years (the median)
- April 12
First fall freeze
How often the first freeze comes on or before each date.
- 1 year in 10
- October 16
- 1 year in 5
- October 21
- 3 years in 10
- October 24
- 2 years in 5
- October 26
- Half of years (the median)
- October 29
- Growing season
- about 198 days
- Hardiness zones nearby
- 6a, 6b
- Summer days
- a usual high of about 29 °C84 °F
- Lettuce and spinach run to seed
- June to September, in hot, long days (how we know)
Summer and rain
A growing garden needs about 25 mm1 in of water a week, rain and watering together. Here is what a normal month brings.
Month by month
- January
- high ~2 °C36 °F · low ~-6 °C21 °F · rain ~66 mm2.6 in
- February
- high ~5 °C41 °F · low ~-4 °C24 °F · rain ~53 mm2.1 in
- March
- high ~11 °C52 °F · low ~1 °C33 °F · rain ~83 mm3.3 in
- April
- high ~18 °C64 °F · low ~6 °C43 °F · rain ~104 mm4.1 in
- May
- high ~23 °C74 °F · low ~12 °C54 °F · rain ~110 mm4.3 in
- June
- high ~28 °C82 °F · low ~17 °C63 °F · rain ~128 mm5.1 in
- July
- high ~30 °C85 °F · low ~19 °C67 °F · rain ~109 mm4.3 in
- August
- high ~29 °C84 °F · low ~18 °C65 °F · rain ~82 mm3.2 in
- September
- high ~26 °C78 °F · low ~14 °C57 °F · rain ~65 mm2.6 in
- October
- high ~19 °C66 °F · low ~7 °C45 °F · rain ~82 mm3.2 in
- November
- high ~11 °C52 °F · low ~2 °C35 °F · rain ~82 mm3.2 in
- December
- high ~5 °C41 °F · low ~-3 °C26 °F · rain ~68 mm2.7 in
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, the Indianapolis Eagle Creek Airport station (listed by NOAA as Indianapolis Eagle Creek Ap, USW00053842), at 39.83, -86.30. These are that station’s own records, unshifted. The further your garden is from it, the less exactly they describe your ground. The planner finds the nearest station to your garden and lowers its confidence with distance, so no number is presented as if it were measured in your garden.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a few hundred feet away does not. No table can know that about your garden. A few seasons of your own logged frosts can.
ZIP codes nearest this station
46032, 46033, 46038, 46052, 46075, 46077, 46107, 46112, 46113, 46118, 46122, 46123, 46142, 46143, 46147, 46149, 46165, 46167, 46168, 46183, 46184, 46201, 46202, 46203, 46204, 46205, 46208, 46214, 46217, 46218, 46219, 46220, 46221, 46222, 46224, 46225, 46226, 46227, 46228, 46231, 46234, 46237, 46240, 46241, 46250, 46254, 46260, 46268, 46278, 46280, 46290.
What can I plant here, and when? ›
Nearby stations
The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.
- Greenfield, IN, last frost by April 19
- Elwood, IN, last frost by April 24
- Cambridge City 3 N, IN, last frost by April 27
- Danville, IL, last frost by April 21
- Eaton, OH, last frost by April 25
- Cheviot 3 W, OH, last frost by April 16
Other stations in Indiana.
- Warsaw, IN, last frost by April 28
- Lowell, IN, last frost by April 29
- S Bend, IN, last frost by April 23