Frost dates for 47403 — Bloomington, IN
Last spring frostApr 17median date
First fall frostOct 22median date
Growing season188 daysfrost-free
Hardiness zone6bZone 6b
How Bloomington compares
- In 8 years out of 10, the last spring frost in Bloomington falls between April 3 and May 5, a 32-day window. The first fall frost falls between October 8 and November 2.
- The median last frost is 5 days earlier than the Indiana median of Apr 22.
- Its 188-day growing season is longer than 70% of the 733 Indiana places with a regular frost season (state median 182 days).
- The last frost is 5 days earlier than the zone 6b median of Apr 22. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6b chart.
- The weather station records an average of 108 nights a year at or below 32°F.
- Compared with Indianapolis, IN, 84 km away, the last frost here is 3 days earlier than there and the growing season is 4 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 3 |
| 50% (median) | April 17 |
| 10% (safe for tender plants) | May 5 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 8 |
| 50% (median) | October 22 |
| 90% (late) | November 2 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Bloomington, IN
Frost dates for 47403 — Bloomington, IN — last frost Apr 17, first frost Oct 22, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Jan 23 to Feb 6Transplant outside: Mar 20 to Apr 3
Start indoors: Feb 6 to Feb 20Transplant outside: May 1 to May 15
Start indoors: Feb 6 to Feb 20Transplant outside: May 1 to May 15
Start indoors: Feb 20 to Mar 6Transplant outside: Apr 24 to May 8
Start indoors: Feb 20 to Mar 6Transplant outside: Mar 27 to Apr 10Sow outdoors: Mar 20 to Apr 24Plant for fall: Aug 27 to Sep 24
Start indoors: Feb 20 to Mar 6Transplant outside: Mar 20 to Apr 3Sow outdoors: Mar 20 to Apr 3Plant for fall: Aug 13 to Sep 3
Start indoors: Feb 20 to Mar 6Transplant outside: Apr 3 to Apr 17Plant for fall: Jul 16 to Aug 6
Start indoors: Feb 20 to Mar 6Transplant outside: Mar 27 to Apr 10Plant for fall: Jul 16 to Aug 6
Start indoors: Feb 20 to Mar 6Transplant outside: Apr 3 to Apr 17Plant for fall: Jul 16 to Aug 6
Start indoors: Mar 6 to Mar 20Transplant outside: May 8 to May 22Sow outdoors: May 8 to May 22
Start indoors: Mar 6 to Mar 20Transplant outside: Apr 24 to May 8
Sow outdoors: Mar 6 to Mar 27Plant for fall: Jul 30 to Aug 20
Sow outdoors: Mar 6 to Mar 27Plant for fall: Aug 27 to Sep 17
Sow outdoors: Mar 13 to Apr 24Plant for fall: Sep 10 to Oct 1
Start indoors: Mar 20 to Mar 27Transplant outside: May 1 to May 8Sow outdoors: Apr 24 to May 8Plant for fall: Aug 6 to Aug 20
Start indoors: Mar 20 to Mar 27Sow outdoors: Apr 24 to May 8Plant for fall: Aug 13 to Aug 27
Start indoors: Mar 20 to Mar 27Sow outdoors: Apr 24 to May 8
Start indoors: Mar 20 to Mar 27Transplant outside: May 1 to May 15
Sow outdoors: Mar 27 to Apr 24Plant for fall: Jul 30 to Aug 13
Sow outdoors: Mar 27 to Apr 24Plant for fall: Aug 13 to Aug 27
Sow outdoors: Mar 27 to Apr 17
Sow outdoors: Apr 3 to May 1Plant for fall: Aug 13 to Aug 27
Sow outdoors: Apr 3 to Apr 24Plant for fall: Aug 27 to Sep 17
Sow outdoors: Apr 24 to May 15Plant for fall: Aug 6 to Aug 20
Sow outdoors: Apr 24 to May 8
Transplant outside: May 1 to May 22
Plant for fall: Oct 8 to Nov 12
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Bloomington, IN
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 23 – Feb 6 | Mar 20 – Apr 3 | — | — |
| Peppers | Feb 6 – Feb 20 | May 1 – May 15 | — | — |
| Eggplant | Feb 6 – Feb 20 | May 1 – May 15 | — | — |
| Tomatoes | Feb 20 – Mar 6 | Apr 24 – May 8 | — | — |
| Lettuce | Feb 20 – Mar 6 | Mar 27 – Apr 10 | Mar 20 – Apr 24 | Aug 27 – Sep 24 |
| Kale | Feb 20 – Mar 6 | Mar 20 – Apr 3 | Mar 20 – Apr 3 | Aug 13 – Sep 3 |
| Broccoli | Feb 20 – Mar 6 | Apr 3 – Apr 17 | — | Jul 16 – Aug 6 |
| Cabbage | Feb 20 – Mar 6 | Mar 27 – Apr 10 | — | Jul 16 – Aug 6 |
| Cauliflower | Feb 20 – Mar 6 | Apr 3 – Apr 17 | — | Jul 16 – Aug 6 |
| Okra | Mar 6 – Mar 20 | May 8 – May 22 | May 8 – May 22 | — |
| Basil | Mar 6 – Mar 20 | Apr 24 – May 8 | — | — |
| Peas | — | — | Mar 6 – Mar 27 | Jul 30 – Aug 20 |
| Spinach | — | — | Mar 6 – Mar 27 | Aug 27 – Sep 17 |
| Radishes | — | — | Mar 13 – Apr 24 | Sep 10 – Oct 1 |
| Cucumbers | Mar 20 – Mar 27 | May 1 – May 8 | Apr 24 – May 8 | Aug 6 – Aug 20 |
| Zucchini & Summer Squash | Mar 20 – Mar 27 | — | Apr 24 – May 8 | Aug 13 – Aug 27 |
| Winter Squash & Pumpkins | Mar 20 – Mar 27 | — | Apr 24 – May 8 | — |
| Melons & Watermelon | Mar 20 – Mar 27 | May 1 – May 15 | — | — |
| Carrots | — | — | Mar 27 – Apr 24 | Jul 30 – Aug 13 |
| Beets | — | — | Mar 27 – Apr 24 | Aug 13 – Aug 27 |
| Potatoes | — | — | Mar 27 – Apr 17 | — |
| Swiss Chard | — | — | Apr 3 – May 1 | Aug 13 – Aug 27 |
| Cilantro | — | — | Apr 3 – Apr 24 | Aug 27 – Sep 17 |
| Green Beans | — | — | Apr 24 – May 15 | Aug 6 – Aug 20 |
| Sweet Corn | — | — | Apr 24 – May 8 | — |
| Sweet Potatoes | — | May 1 – May 22 | — | — |
| Garlic | — | — | — | Oct 8 – Nov 12 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Bloomington Monroe Co Ap, IN weather station, 4 km away (elevation 843 ft (257 m)).
ZIP codes in Bloomington: 47401 47402 47403 47404 47405 47406 47407 47408
Frost dates near Bloomington
- Clear Creek Apr 15 · Oct 26
- Smithville Apr 15 · Oct 26
- Stanford Apr 17 · Oct 22
- Harrodsburg Apr 20 · Oct 20
- Solsberry Apr 17 · Oct 22
- Ellettsville Apr 15 · Oct 26
- Unionville Apr 15 · Oct 26
- Springville Apr 10 · Oct 30
Frequently asked questions
When is the last frost in Bloomington, IN?
The median last spring frost in Bloomington, IN is April 17. There is still about a 10% chance of frost after May 5, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Bloomington, IN?
The median first fall frost is October 22, with about a 10% chance of frost before October 8.
How long is the growing season in Bloomington, IN?
About 188 days between the median last spring frost and first fall frost.
What planting zone is Bloomington, IN?
Bloomington, IN is in USDA hardiness zone 6b.