When to Plant Watermelon in Belvidere, IL

One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can determine when it's possible to plant watermelon in Belvidere by using the USDA zone info.


Planting Calendar for Watermelon

Frost tolerance for watermelon: Not tolerant of frost.
When to plant: After all chance of frost has passed.

It's not a good idea to plant watermelon until after all chance of frost has passed because they do not do well in cold weather.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant watermelon
Possibly ok, but a risky time to plant watermelon
Probably not a good time to plant watermelon

The earliest that you can plant watermelon in Belvidere is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant watermelon and expect a good harvest is probably August. Any later than that and your watermelon may not have a chance to really do well. You can get started a little bit earlier by starting your watermelon indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Belvidere. In the coldest months of winter you can expect an average low temperature of -15°F.

Just be sure to remember that USDA zone info for Belvidere may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Belvidere there is a last frost after April 15 so always be ready to protect your watermelon if you have one of those late frosts.

USDA Zone Info for Belvidere

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-15°F
Highest Expected Low-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Belvidere

You may be interested in your other planting guides for Belvidere.