When to Plant Melons in Jefferson, WI

The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By reviewing the USDA zone info for Jefferson it's possible to figure out when it's a good idea to plant melons.


Planting Calendar for Melons

Frost tolerance for melons: Not tolerant of frost.
When to plant: After the last frost when the weather gets warmer.

It's a bad idea to plant melons until after the last frost because they are not cold tolerant.

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

The earliest that you can plant melons in Jefferson 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 melons and expect a good harvest is probably August. You probably don't want to wait any later than that or else your melons may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your melons indoors.

Last Frost Date

The average date of last frost is April 15 in Jefferson. You can expect an average low temperature of -20°F in the coldest months of winter.

It's important to remember that USDA zone info for Jefferson may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Jefferson it frosts late in the year after April 15 so always be ready to cover your melons if you have a late frost.

USDA Zone Info for Jefferson

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-20°F
Highest Expected Low-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Jefferson

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