Omaha, IL frost dates
Last spring frostApr 15median date
First fall frostOct 19median date
Growing season187 daysfrost-free
Hardiness zone7aZone 7a
How Omaha compares
- In 8 years out of 10, the last spring frost in Omaha falls between April 2 and May 2, a 30-day window. The first fall frost falls between October 4 and October 29.
- The median last frost is 2 days earlier than the Illinois median of Apr 17.
- Its 187-day growing season is longer than 48% of the 1,287 Illinois places with a regular frost season (state median 187 days).
- The last frost is typical for zone 7a, where the median is Apr 16.
- The weather station records an average of 103 nights a year at or below 32°F.
- Compared with Evansville, IN, 64 km away, the last frost here is 17 days later than there and the growing season is 39 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 2 |
| 50% (median) | April 15 |
| 10% (safe for tender plants) | May 2 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 4 |
| 50% (median) | October 19 |
| 90% (late) | October 29 |
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 Omaha, IL
Omaha, IL frost dates — last frost Apr 15, first frost Oct 19, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Jan 21 to Feb 4Transplant outside: Mar 18 to Apr 1
Start indoors: Feb 4 to Feb 18Transplant outside: Apr 29 to May 13
Start indoors: Feb 4 to Feb 18Transplant outside: Apr 29 to May 13
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 22 to May 6
Start indoors: Feb 18 to Mar 4Transplant outside: Mar 25 to Apr 8Sow outdoors: Mar 18 to Apr 22Plant for fall: Aug 24 to Sep 21
Start indoors: Feb 18 to Mar 4Transplant outside: Mar 18 to Apr 1Sow outdoors: Mar 18 to Apr 1Plant for fall: Aug 10 to Aug 31
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 1 to Apr 15Plant for fall: Jul 13 to Aug 3
Start indoors: Feb 18 to Mar 4Transplant outside: Mar 25 to Apr 8Plant for fall: Jul 13 to Aug 3
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 1 to Apr 15Plant for fall: Jul 13 to Aug 3
Start indoors: Mar 4 to Mar 18Transplant outside: May 6 to May 20Sow outdoors: May 6 to May 20
Start indoors: Mar 4 to Mar 18Transplant outside: Apr 22 to May 6
Sow outdoors: Mar 4 to Mar 25Plant for fall: Jul 27 to Aug 17
Sow outdoors: Mar 4 to Mar 25Plant for fall: Aug 24 to Sep 14
Sow outdoors: Mar 11 to Apr 22Plant for fall: Sep 7 to Sep 28
Start indoors: Mar 18 to Mar 25Transplant outside: Apr 29 to May 6Sow outdoors: Apr 22 to May 6Plant for fall: Aug 3 to Aug 17
Start indoors: Mar 18 to Mar 25Sow outdoors: Apr 22 to May 6Plant for fall: Aug 10 to Aug 24
Start indoors: Mar 18 to Mar 25Sow outdoors: Apr 22 to May 6
Start indoors: Mar 18 to Mar 25Transplant outside: Apr 29 to May 13
Sow outdoors: Mar 25 to Apr 22Plant for fall: Jul 27 to Aug 10
Sow outdoors: Mar 25 to Apr 22Plant for fall: Aug 10 to Aug 24
Sow outdoors: Mar 25 to Apr 15
Sow outdoors: Apr 1 to Apr 29Plant for fall: Aug 10 to Aug 24
Sow outdoors: Apr 1 to Apr 22Plant for fall: Aug 24 to Sep 14
Sow outdoors: Apr 22 to May 13Plant for fall: Aug 3 to Aug 17
Sow outdoors: Apr 22 to May 6
Transplant outside: Apr 29 to May 20
Plant for fall: Oct 5 to Nov 9
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Omaha, IL
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 21 – Feb 4 | Mar 18 – Apr 1 | — | — |
| Peppers | Feb 4 – Feb 18 | Apr 29 – May 13 | — | — |
| Eggplant | Feb 4 – Feb 18 | Apr 29 – May 13 | — | — |
| Tomatoes | Feb 18 – Mar 4 | Apr 22 – May 6 | — | — |
| Lettuce | Feb 18 – Mar 4 | Mar 25 – Apr 8 | Mar 18 – Apr 22 | Aug 24 – Sep 21 |
| Kale | Feb 18 – Mar 4 | Mar 18 – Apr 1 | Mar 18 – Apr 1 | Aug 10 – Aug 31 |
| Broccoli | Feb 18 – Mar 4 | Apr 1 – Apr 15 | — | Jul 13 – Aug 3 |
| Cabbage | Feb 18 – Mar 4 | Mar 25 – Apr 8 | — | Jul 13 – Aug 3 |
| Cauliflower | Feb 18 – Mar 4 | Apr 1 – Apr 15 | — | Jul 13 – Aug 3 |
| Okra | Mar 4 – Mar 18 | May 6 – May 20 | May 6 – May 20 | — |
| Basil | Mar 4 – Mar 18 | Apr 22 – May 6 | — | — |
| Peas | — | — | Mar 4 – Mar 25 | Jul 27 – Aug 17 |
| Spinach | — | — | Mar 4 – Mar 25 | Aug 24 – Sep 14 |
| Radishes | — | — | Mar 11 – Apr 22 | Sep 7 – Sep 28 |
| Cucumbers | Mar 18 – Mar 25 | Apr 29 – May 6 | Apr 22 – May 6 | Aug 3 – Aug 17 |
| Zucchini & Summer Squash | Mar 18 – Mar 25 | — | Apr 22 – May 6 | Aug 10 – Aug 24 |
| Winter Squash & Pumpkins | Mar 18 – Mar 25 | — | Apr 22 – May 6 | — |
| Melons & Watermelon | Mar 18 – Mar 25 | Apr 29 – May 13 | — | — |
| Carrots | — | — | Mar 25 – Apr 22 | Jul 27 – Aug 10 |
| Beets | — | — | Mar 25 – Apr 22 | Aug 10 – Aug 24 |
| Potatoes | — | — | Mar 25 – Apr 15 | — |
| Swiss Chard | — | — | Apr 1 – Apr 29 | Aug 10 – Aug 24 |
| Cilantro | — | — | Apr 1 – Apr 22 | Aug 24 – Sep 14 |
| Green Beans | — | — | Apr 22 – May 13 | Aug 3 – Aug 17 |
| Sweet Corn | — | — | Apr 22 – May 6 | — |
| Sweet Potatoes | — | Apr 29 – May 20 | — | — |
| Garlic | — | — | — | Oct 5 – Nov 9 |
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 Carmi, IL weather station, 22 km away (elevation 335 ft (102 m)).
Frost dates near Omaha
- Ridgway Apr 5 · Oct 31
- Norris City Apr 15 · Oct 19
- New Haven Apr 5 · Oct 31
- Eldorado Apr 7 · Oct 26
- Broughton Apr 11 · Oct 21
- Emma Apr 15 · Oct 19
- Equality Apr 7 · Oct 26
- Dale Apr 11 · Oct 21
- Shawneetown Apr 5 · Oct 31
- Junction Apr 7 · Oct 26
Frequently asked questions
When is the last frost in Omaha, IL?
The median last spring frost in Omaha, IL is April 15. There is still about a 10% chance of frost after May 2, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Omaha, IL?
The median first fall frost is October 19, with about a 10% chance of frost before October 4.
How long is the growing season in Omaha, IL?
About 187 days between the median last spring frost and first fall frost.
What planting zone is Omaha, IL?
Omaha, IL is in USDA hardiness zone 7a.