Dolliver, IA frost dates
Last spring frostMay 2median date
First fall frostSep 30median date
Growing season151 daysfrost-free
Hardiness zone5aZone 5a
How Dolliver compares
- In 8 years out of 10, the last spring frost in Dolliver falls between April 19 and May 14, a 25-day window. The first fall frost falls between September 17 and October 13.
- The median last frost is 4 days later than the Iowa median of Apr 28.
- Its 151-day growing season is longer than 3% of the 934 Iowa places with a regular frost season (state median 165 days).
- The last frost is typical for zone 5a, where the median is May 3.
- The weather station records an average of 161 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 19 |
| 50% (median) | May 2 |
| 10% (safe for tender plants) | May 14 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 17 |
| 50% (median) | September 30 |
| 90% (late) | October 13 |
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 Dolliver, IA
Dolliver, IA frost dates — last frost May 2, first frost Sep 30, zone 5a. whenisthelastfrost.com
Crop
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Start indoors: Feb 7 to Feb 21Transplant outside: Apr 4 to Apr 18
Start indoors: Feb 21 to Mar 7Transplant outside: May 16 to May 30
Start indoors: Feb 21 to Mar 7Transplant outside: May 16 to May 30
Start indoors: Mar 7 to Mar 21Transplant outside: May 9 to May 23
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 11 to Apr 25Sow outdoors: Apr 4 to May 9Plant for fall: Aug 5 to Sep 2
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 4 to Apr 18Sow outdoors: Apr 4 to Apr 18Plant for fall: Jul 22 to Aug 12
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 18 to May 2Plant for fall: Jun 24 to Jul 15
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 11 to Apr 25Plant for fall: Jun 24 to Jul 15
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 18 to May 2Plant for fall: Jun 24 to Jul 15
Start indoors: Mar 21 to Apr 4Transplant outside: May 23 to Jun 6Sow outdoors: May 23 to Jun 6
Start indoors: Mar 21 to Apr 4Transplant outside: May 9 to May 23
Sow outdoors: Mar 21 to Apr 11Plant for fall: Jul 8 to Jul 29
Sow outdoors: Mar 21 to Apr 11Plant for fall: Aug 5 to Aug 26
Sow outdoors: Mar 28 to May 9Plant for fall: Aug 19 to Sep 9
Start indoors: Apr 4 to Apr 11Transplant outside: May 16 to May 23Sow outdoors: May 9 to May 23Plant for fall: Jul 15 to Jul 29
Start indoors: Apr 4 to Apr 11Sow outdoors: May 9 to May 23Plant for fall: Jul 22 to Aug 5
Start indoors: Apr 4 to Apr 11Sow outdoors: May 9 to May 23
Start indoors: Apr 4 to Apr 11Transplant outside: May 16 to May 30
Sow outdoors: Apr 11 to May 9Plant for fall: Jul 8 to Jul 22
Sow outdoors: Apr 11 to May 9Plant for fall: Jul 22 to Aug 5
Sow outdoors: Apr 11 to May 2
Sow outdoors: Apr 18 to May 16Plant for fall: Jul 22 to Aug 5
Sow outdoors: Apr 18 to May 9Plant for fall: Aug 5 to Aug 26
Sow outdoors: May 9 to May 30Plant for fall: Jul 15 to Jul 29
Sow outdoors: May 9 to May 23
Transplant outside: May 16 to Jun 6
Plant for fall: Sep 16 to Oct 21
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Dolliver, IA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 7 – Feb 21 | Apr 4 – Apr 18 | — | — |
| Peppers | Feb 21 – Mar 7 | May 16 – May 30 | — | — |
| Eggplant | Feb 21 – Mar 7 | May 16 – May 30 | — | — |
| Tomatoes | Mar 7 – Mar 21 | May 9 – May 23 | — | — |
| Lettuce | Mar 7 – Mar 21 | Apr 11 – Apr 25 | Apr 4 – May 9 | Aug 5 – Sep 2 |
| Kale | Mar 7 – Mar 21 | Apr 4 – Apr 18 | Apr 4 – Apr 18 | Jul 22 – Aug 12 |
| Broccoli | Mar 7 – Mar 21 | Apr 18 – May 2 | — | Jun 24 – Jul 15 |
| Cabbage | Mar 7 – Mar 21 | Apr 11 – Apr 25 | — | Jun 24 – Jul 15 |
| Cauliflower | Mar 7 – Mar 21 | Apr 18 – May 2 | — | Jun 24 – Jul 15 |
| Okra | Mar 21 – Apr 4 | May 23 – Jun 6 | May 23 – Jun 6 | — |
| Basil | Mar 21 – Apr 4 | May 9 – May 23 | — | — |
| Peas | — | — | Mar 21 – Apr 11 | Jul 8 – Jul 29 |
| Spinach | — | — | Mar 21 – Apr 11 | Aug 5 – Aug 26 |
| Radishes | — | — | Mar 28 – May 9 | Aug 19 – Sep 9 |
| Cucumbers | Apr 4 – Apr 11 | May 16 – May 23 | May 9 – May 23 | Jul 15 – Jul 29 |
| Zucchini & Summer Squash | Apr 4 – Apr 11 | — | May 9 – May 23 | Jul 22 – Aug 5 |
| Winter Squash & Pumpkins | Apr 4 – Apr 11 | — | May 9 – May 23 | — |
| Melons & Watermelon | Apr 4 – Apr 11 | May 16 – May 30 | — | — |
| Carrots | — | — | Apr 11 – May 9 | Jul 8 – Jul 22 |
| Beets | — | — | Apr 11 – May 9 | Jul 22 – Aug 5 |
| Potatoes | — | — | Apr 11 – May 2 | — |
| Swiss Chard | — | — | Apr 18 – May 16 | Jul 22 – Aug 5 |
| Cilantro | — | — | Apr 18 – May 9 | Aug 5 – Aug 26 |
| Green Beans | — | — | May 9 – May 30 | Jul 15 – Jul 29 |
| Sweet Corn | — | — | May 9 – May 23 | — |
| Sweet Potatoes | — | May 16 – Jun 6 | — | — |
| Garlic | — | — | — | Sep 16 – Oct 21 |
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 Estherville Muni Ap, IA weather station, 12 km away (elevation 1,316 ft (401 m)).
Frost dates near Dolliver
- Armstrong May 4 · Oct 1
- Estherville May 2 · Oct 3
- Ringsted May 2 · Oct 3
- Wallingford May 2 · Oct 3
- Swea City May 4 · Oct 1
- Superior Apr 28 · Oct 11
- Graettinger Apr 27 · Oct 7
- Fenton Apr 30 · Oct 6
- Terril Apr 28 · Oct 11
- Cylinder Apr 27 · Oct 7
Frequently asked questions
When is the last frost in Dolliver, IA?
The median last spring frost in Dolliver, IA is May 2. There is still about a 10% chance of frost after May 14, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Dolliver, IA?
The median first fall frost is September 30, with about a 10% chance of frost before September 17.
How long is the growing season in Dolliver, IA?
About 151 days between the median last spring frost and first fall frost.
What planting zone is Dolliver, IA?
Dolliver, IA is in USDA hardiness zone 5a.