When to plant melon (cantaloupe/watermelon) in Cheyenne

Melon (cantaloupe/watermelon) is frost-tender, so every date keys off Cheyenne's last spring frost of May 13.
Step 1 · Sow
Start seeds indoors
May 3 – May 24
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jul 16 – Aug 6
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Sep 29 – Oct 24
Picking runs until conditions turn against the crop.
Window
Days to maturity
75 – 100 d
Cheyenne's 136-day season leaves this much room.
Melon (cantaloupe/watermelon) on Cheyenne's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
MAY 13
OCT 2

Common questions

When can I sow melon (cantaloupe/watermelon) outdoors in Cheyenne?

Direct-sow around mid July (Jul 16–Aug 6) in Cheyenne, based on its local frost dates. Confidence 86%.

When will melon (cantaloupe/watermelon) be ready to harvest in Cheyenne?

Expect to harvest from around late September (Sep 29–Oct 24) in Cheyenne, based on its local frost dates. Confidence 80%.

When should I start melon (cantaloupe/watermelon) seeds indoors in Cheyenne?

Start seeds indoors around early May (May 3–May 24) in Cheyenne, based on its local frost dates. Confidence 85%.

When can I transplant melon (cantaloupe/watermelon) outdoors in Cheyenne?

Transplant outdoors around mid July (Jul 16–Aug 6) in Cheyenne, based on its local frost dates. Confidence 86%.

How long is the growing season in Cheyenne?

Cheyenne has roughly 136 frost-free days, which is enough time to grow melon (cantaloupe/watermelon) to maturity outdoors.

The rule of thumb

Sow melon (cantaloupe/watermelon) 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. Every date on this page is derived from that rule and Cheyenne's frost dates.

Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.