When to Plant Watermelon in Bellingham, WA

One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant watermelon in Bellingham should be estimated by referring to 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.

You can not plant watermelon until after the last frost because they require warm 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 Bellingham 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 couple of weeks earlier by starting your watermelon indoors.

Last Frost Date

In Bellingham the average date of last frost happens on March 15. You should expect an average low temperature of 10°F in the coldest months of winter.

Remember that USDA zone info for Bellingham 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 Bellingham you get surprised by a frost after March 15 so make sure that you are ready to protect your watermelon if you have a late frost.

USDA Zone Info for Bellingham

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)March 15
Average Date of First Frost (fall)November 15
Lowest Expected Low10°F
Highest Expected Low15°F

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

Plants to Grow in Bellingham

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