When to plant Watermelon in Kansas, United States

Watermelon can be planted after May 23, when air temperature is consistently in a range between 55°F and 100°F and soil temperature is above 45°F.

Watermelon details page

Growing Watermelon in Kansas

Days suitable for growing Watermelon in Kansas

Kansas has on average 136 days, suitable for growing Watermelon . Watermelon needs on average between 65 and 100 days to mature and produce harvest. With 136 days suitable for growing, you can expect good harvest without too much effort if all planting activities are done in timely manner.

Watermelon seeds can be planted between May 23 and August 01. Planting before May 23 without any additional protection is not advised because cold streaks can damage or kill off young plant. When planting after August 01, Watermelon will not have enough time to mature and produce harvest.

Growing season extention

In order to maximize chances for a good harvest of Watermelon in Kansas, some extra steps can be taken to extend growing season.

Start seeds indoors

When starting seeds indoors, it is possible to guarantee best possible conditions for young seedlings. Consistent temperature range, adequate watering and ample light (natural, supplemented with artifitial grow lights) will ensure you have strong and healthy seedlings just in time for transplanting into soil.

It takes 49 days on average for Watermelon to sprout, and grow big enough to be ready for transplanting.

May 23 is on average first day in Kansas that has required temperatures for young Watermelon seedlings to grow, without worrying about cold damage.

Seeds can be started indoors beween April 04 and June 27, this way they will be ready just in time for transplanting on May 23.

Seedlings started after June 27 might not have enough time to mature and produce harvest.

Use a cold frame

When using a cold frame in a beggining of growing season You can protect young plants from possible temperature drops, this way growing season can start up to 2 weeks earlier.

Use an additional shading

On days, when air temperatures are expected to raise above 100°F, which is in top of tolerable range for Watermelon , consider using additional shading to prevent heat shock.

Total frost free days	181
Last frost expected date	April 21
First frost expected date	October 19
Dates with ideal conditions
Dates with suitable conditions	May 08 May 14 to May 19 (6 days) May 23 to October 05 (136 days) October 09 to October 10 (2 days) October 23
Total days ideal for growing Watermelon in Kansas	0
Total days suitable for growing Watermelon in Kansas	146
Days needed for Watermelon to mature and produce harvest	65 - 100
Seed can be planted directly into soil	yes

Notable temperature facts for growing Watermelon in Kansas

Table with days suitable to grow vegetables in Kansas

Tolerable temperature range for Watermelon : 55°F to 100°F

	Week	Average temperature	Possible min and max temperature	Suitable for Watermelon
1	January 01 - January 03	24°F to 42°F	3°F to 54°F
2	January 04 - January 10	29°F to 47°F	9°F to 59°F
3	January 11 - January 17	29°F to 46°F	17°F to 59°F
4	January 18 - January 24	25°F to 42°F	9°F to 57°F
5	January 25 - January 31	23°F to 41°F	3°F to 61°F
6	February 01 - February 07	26°F to 46°F	8°F to 67°F
7	February 08 - February 14	23°F to 41°F	0°F to 59°F
8	February 15 - February 21	22°F to 44°F	-14°F to 68°F
9	February 22 - February 28	26°F to 47°F	7°F to 67°F
10	March 01 - March 07	32°F to 56°F	-3°F to 76°F
11	March 08 - March 14	37°F to 56°F	13°F to 73°F
12	March 15 - March 21	37°F to 58°F	20°F to 75°F
13	March 22 - March 28	40°F to 59°F	25°F to 74°F
14	March 29 - April 04	42°F to 65°F	26°F to 83°F
15	April 05 - April 11	46°F to 70°F	28°F to 81°F
16	April 12 - April 18	43°F to 66°F	28°F to 86°F
17	April 19 - April 25	47°F to 69°F	31°F to 82°F
18	April 26 - May 02	51°F to 72°F	39°F to 85°F
19	May 03 - May 09	54°F to 74°F	41°F to 90°F
20	May 10 - May 16	55°F to 74°F	39°F to 90°F
21	May 17 - May 23	57°F to 75°F	45°F to 89°F	TRUE
22	May 24 - May 30	61°F to 78°F	49°F to 89°F	TRUE
23	May 31 - June 06	63°F to 82°F	52°F to 94°F	TRUE
24	June 07 - June 13	65°F to 85°F	52°F to 96°F	TRUE
25	June 14 - June 20	70°F to 90°F	60°F to 99°F	TRUE
26	June 21 - June 27	69°F to 88°F	59°F to 98°F	TRUE
27	June 28 - July 04	71°F to 90°F	61°F to 99°F	TRUE
28	July 05 - July 11	71°F to 89°F	62°F to 97°F	TRUE
29	July 12 - July 18	72°F to 92°F	62°F to 101°F	TRUE
30	July 19 - July 25	73°F to 92°F	62°F to 102°F	TRUE
31	July 26 - August 01	73°F to 91°F	63°F to 101°F	TRUE
32	August 02 - August 08	71°F to 89°F	60°F to 99°F	TRUE
33	August 09 - August 15	72°F to 91°F	60°F to 98°F	TRUE
34	August 16 - August 22	70°F to 90°F	63°F to 104°F	TRUE
35	August 23 - August 29	72°F to 91°F	61°F to 101°F	TRUE
36	August 30 - September 05	69°F to 89°F	61°F to 97°F	TRUE
37	September 06 - September 12	66°F to 86°F	48°F to 95°F	TRUE
38	September 13 - September 19	66°F to 85°F	55°F to 97°F	TRUE
39	September 20 - September 26	63°F to 83°F	53°F to 97°F	TRUE
40	September 27 - October 03	62°F to 81°F	45°F to 92°F	TRUE
41	October 04 - October 10	55°F to 76°F	42°F to 90°F
42	October 11 - October 17	50°F to 71°F	35°F to 87°F
43	October 18 - October 24	50°F to 71°F	32°F to 85°F
44	October 25 - October 31	40°F to 56°F	24°F to 77°F
45	November 01 - November 07	43°F to 63°F	26°F to 76°F
46	November 08 - November 14	40°F to 58°F	15°F to 74°F
47	November 15 - November 21	39°F to 58°F	22°F to 72°F
48	November 22 - November 28	34°F to 52°F	20°F to 65°F
49	November 29 - December 05	34°F to 52°F	24°F to 70°F
50	December 06 - December 12	34°F to 52°F	24°F to 66°F
51	December 13 - December 19	30°F to 46°F	16°F to 71°F
52	December 20 - December 26	30°F to 49°F	-4°F to 70°F
53	December 27 - December 31	31°F to 48°F	18°F to 66°F

Days with suitable temperature for growing Watermelon in Kansas

Watermelon details page

For more precise weather statisctics and planting information, please select a County in Kansas.

All data is provided “as is” without warranty or any representation of accuracy, timeliness or completeness.

Average daily temperatures were calculated using

Weather data provided by OpenWeather