Umpire, AR frost dates
Last spring frostMar 26median date
First fall frostNov 12median date
Growing season231 daysfrost-free
Hardiness zone8aZone 8a
How Umpire compares
- In 8 years out of 10, the last spring frost in Umpire falls between March 4 and April 11, a 38-day window. The first fall frost falls between October 29 and December 2.
- The median last frost is 2 days earlier than the Arkansas median of Mar 28.
- Its 231-day growing season is longer than 70% of the 603 Arkansas places with a regular frost season (state median 222 days).
- The last frost is typical for zone 8a, where the median is Mar 29.
- The weather station records an average of 56 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 4 |
| 50% (median) | March 26 |
| 10% (safe for tender plants) | April 11 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 29 |
| 50% (median) | November 12 |
| 90% (late) | December 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 Umpire, AR
Umpire, AR frost dates — last frost Mar 26, first frost Nov 12, zone 8a. whenisthelastfrost.com
Crop
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Start indoors: Jan 1 to Jan 15Transplant outside: Feb 26 to Mar 12
Start indoors: Jan 15 to Jan 29Transplant outside: Apr 9 to Apr 23
Start indoors: Jan 15 to Jan 29Transplant outside: Apr 9 to Apr 23
Start indoors: Jan 29 to Feb 12Transplant outside: Apr 2 to Apr 16
Start indoors: Jan 29 to Feb 12Transplant outside: Mar 5 to Mar 19Sow outdoors: Feb 26 to Apr 2Plant for fall: Sep 17 to Oct 15
Start indoors: Jan 29 to Feb 12Transplant outside: Feb 26 to Mar 12Sow outdoors: Feb 26 to Mar 12Plant for fall: Sep 3 to Sep 24
Start indoors: Jan 29 to Feb 12Transplant outside: Mar 12 to Mar 26Plant for fall: Aug 6 to Aug 27
Start indoors: Jan 29 to Feb 12Transplant outside: Mar 5 to Mar 19Plant for fall: Aug 6 to Aug 27
Start indoors: Jan 29 to Feb 12Transplant outside: Mar 12 to Mar 26Plant for fall: Aug 6 to Aug 27
Start indoors: Feb 12 to Feb 26Transplant outside: Apr 16 to Apr 30Sow outdoors: Apr 16 to Apr 30
Start indoors: Feb 12 to Feb 26Transplant outside: Apr 2 to Apr 16
Sow outdoors: Feb 12 to Mar 5Plant for fall: Aug 20 to Sep 10
Sow outdoors: Feb 12 to Mar 5Plant for fall: Sep 17 to Oct 8
Sow outdoors: Feb 19 to Apr 2Plant for fall: Oct 1 to Oct 22
Start indoors: Feb 26 to Mar 5Transplant outside: Apr 9 to Apr 16Sow outdoors: Apr 2 to Apr 16Plant for fall: Aug 27 to Sep 10
Start indoors: Feb 26 to Mar 5Sow outdoors: Apr 2 to Apr 16Plant for fall: Sep 3 to Sep 17
Start indoors: Feb 26 to Mar 5Sow outdoors: Apr 2 to Apr 16
Start indoors: Feb 26 to Mar 5Transplant outside: Apr 9 to Apr 23
Sow outdoors: Mar 5 to Apr 2Plant for fall: Aug 20 to Sep 3
Sow outdoors: Mar 5 to Apr 2Plant for fall: Sep 3 to Sep 17
Sow outdoors: Mar 5 to Mar 26
Sow outdoors: Mar 12 to Apr 9Plant for fall: Sep 3 to Sep 17
Sow outdoors: Mar 12 to Apr 2Plant for fall: Sep 17 to Oct 8
Sow outdoors: Apr 2 to Apr 23Plant for fall: Aug 27 to Sep 10
Sow outdoors: Apr 2 to Apr 16
Transplant outside: Apr 9 to Apr 30
Plant for fall: Oct 29 to Dec 3
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Umpire, AR
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 1 – Jan 15 | Feb 26 – Mar 12 | — | — |
| Peppers | Jan 15 – Jan 29 | Apr 9 – Apr 23 | — | — |
| Eggplant | Jan 15 – Jan 29 | Apr 9 – Apr 23 | — | — |
| Tomatoes | Jan 29 – Feb 12 | Apr 2 – Apr 16 | — | — |
| Lettuce | Jan 29 – Feb 12 | Mar 5 – Mar 19 | Feb 26 – Apr 2 | Sep 17 – Oct 15 |
| Kale | Jan 29 – Feb 12 | Feb 26 – Mar 12 | Feb 26 – Mar 12 | Sep 3 – Sep 24 |
| Broccoli | Jan 29 – Feb 12 | Mar 12 – Mar 26 | — | Aug 6 – Aug 27 |
| Cabbage | Jan 29 – Feb 12 | Mar 5 – Mar 19 | — | Aug 6 – Aug 27 |
| Cauliflower | Jan 29 – Feb 12 | Mar 12 – Mar 26 | — | Aug 6 – Aug 27 |
| Okra | Feb 12 – Feb 26 | Apr 16 – Apr 30 | Apr 16 – Apr 30 | — |
| Basil | Feb 12 – Feb 26 | Apr 2 – Apr 16 | — | — |
| Peas | — | — | Feb 12 – Mar 5 | Aug 20 – Sep 10 |
| Spinach | — | — | Feb 12 – Mar 5 | Sep 17 – Oct 8 |
| Radishes | — | — | Feb 19 – Apr 2 | Oct 1 – Oct 22 |
| Cucumbers | Feb 26 – Mar 5 | Apr 9 – Apr 16 | Apr 2 – Apr 16 | Aug 27 – Sep 10 |
| Zucchini & Summer Squash | Feb 26 – Mar 5 | — | Apr 2 – Apr 16 | Sep 3 – Sep 17 |
| Winter Squash & Pumpkins | Feb 26 – Mar 5 | — | Apr 2 – Apr 16 | — |
| Melons & Watermelon | Feb 26 – Mar 5 | Apr 9 – Apr 23 | — | — |
| Carrots | — | — | Mar 5 – Apr 2 | Aug 20 – Sep 3 |
| Beets | — | — | Mar 5 – Apr 2 | Sep 3 – Sep 17 |
| Potatoes | — | — | Mar 5 – Mar 26 | — |
| Swiss Chard | — | — | Mar 12 – Apr 9 | Sep 3 – Sep 17 |
| Cilantro | — | — | Mar 12 – Apr 2 | Sep 17 – Oct 8 |
| Green Beans | — | — | Apr 2 – Apr 23 | Aug 27 – Sep 10 |
| Sweet Corn | — | — | Apr 2 – Apr 16 | — |
| Sweet Potatoes | — | Apr 9 – Apr 30 | — | — |
| Garlic | — | — | — | Oct 29 – Dec 3 |
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 Big Fk 1 Sse, AR weather station, 19 km away (elevation 1,201 ft (366 m)).
Frost dates near Umpire
- Newhope Apr 5 · Nov 1
- Langley Mar 26 · Nov 12
- Dierks Mar 26 · Nov 9
- Vandervoort Apr 5 · Nov 1
- Caddo Gap Mar 26 · Nov 12
- Kirby Apr 5 · Nov 1
- Grannis Mar 29 · Nov 5
- Board Camp Mar 26 · Nov 12
- Wickes Mar 29 · Nov 5
- Gillham Mar 29 · Nov 5
Frequently asked questions
When is the last frost in Umpire, AR?
The median last spring frost in Umpire, AR is March 26. There is still about a 10% chance of frost after April 11, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Umpire, AR?
The median first fall frost is November 12, with about a 10% chance of frost before October 29.
How long is the growing season in Umpire, AR?
About 231 days between the median last spring frost and first fall frost.
What planting zone is Umpire, AR?
Umpire, AR is in USDA hardiness zone 8a.