June settles Oklahoma into summer — fledgling scissor-tails on the wires, prairies gold with coreopsis and coneflower, and the first searing heat building. The breeding-bird chorus is at full volume across the plains.
Week by week in June
June 4–10
- Freshly fledged Scissor-tailed Flycatchers line the wires beside their parents, a quintessential June sight.
- Purple coneflower, black-eyed Susan, and the orange of butterfly milkweed peak on roadsides and prairie.
- The regal fritillary is in full flight over the best tallgrass remnants, gliding low over the grass.
- Harvest squash, cucumbers, and the first tomatoes; water deeply and consistently against the building heat.
June 11–17
- Mississippi kites nest in town shade trees, sometimes diving to defend their nests, as the prairie sings all day.
- Prairie blazing star spires begin to open and bee balm scents the tallgrass as compass plant rises.
- Sweet corn begins, blackberries ripen, and the first Porter-area peaches arrive late in the month.
- Buttonbush opens pincushion white flower-balls along pond and lake margins, drawing pollinators to the water.
June 18–24
- The summer solstice brings the year's shortest nights, with the Milky Way core rising through Scorpius and Sagittarius.
- Upland sandpipers display over the tallgrass and Snowy Plover and least tern chicks run the Salt Plains flats.
- Hackberry and tawny emperors patrol bottomland hackberry trees as buckeyes and fritillaries fill the prairie.
- Renew mulch, water in the cool of morning, and make a last early-month sowing of beans and corn.
June 25 – July 1
- Prickly pear blooms yellow on the glades and yucca raises white spikes as the prairie reaches summer fullness.
- Ruby-throated hummingbird activity surges at feeders as young birds fledge and disperse across the state.
- Tomatoes, sweet corn, green beans, and the first peaches build toward peak summer abundance.
- Crape myrtles begin their long summer bloom in towns as pecans set tiny green nutlets in the bottoms.
Birds This Month
June is the heart of the Oklahoma breeding season. Scissor-tailed Flycatchers are raising young, and by late month freshly fledged scissor-tails line the wires beside their parents — a quintessential June sight. Mississippi kites are nesting in town shade trees and river bottoms, sometimes defending their nests with steep dives. The prairie sings all day with dickcissels, grasshopper sparrows, Eastern and Western meadowlarks, and the buzzy upland sandpiper over the tallgrass.
Brushy edges and gardens hold singing painted and indigo buntings, blue grosbeaks, orchard orioles, and Bell's vireos; the eastern woods ring with summer tanagers, red-eyed vireos, and great crested flycatchers. At Salt Plains, the Snowy Plovers, least terns, and American avocets have chicks on the salt flats, and the Wichita Mountains hold nesting rock wrens and canyon wrens among the granite.
Around homes, ruby-throated hummingbirds, purple martins, barn swallows, and chimney swifts are feeding broods, and fledgling cardinals, mockingbirds, and bluebirds beg in the yards.
This month's tip: bird at dawn before the heat builds; the prairie chorus is loudest in the first hours, and the early light is best for watching the freshly fledged scissor-tails and kites that make June Oklahoma's family-bird month.
What's Blooming
June carries the prairie bloom into high summer. Indian blanket (firewheel) — the state wildflower — is still ablaze on roadsides and pastures, now joined by tall purple coneflower, golden black-eyed Susan, the orange flames of butterfly milkweed, lavender bee balm (wild bergamot), and the spires of prairie blazing star beginning to open. Plains coreopsis still gilds the low ground and ditches across the state.
The tallgrass prairie reaches toward its summer fullness with compass plant, rattlesnake master, leadplant, and prairie clover among the rising big bluestem, while glades and rocky openings show prickly pear in full yellow flower and the white of yucca spikes. In the Wichita Mountains and Cross Timbers, winecup and Mexican hat bloom among the boulders and post oaks.
Where to see it: the Tallgrass Prairie Preserve and the prairies of the Flint Hills border country show June's tallgrass flowers in their full sweep, and roadsides statewide still carry Indian blanket and coreopsis. Visit early before the day's heat and wind, when the prairie is at its most colorful and alive with pollinators.
Garden This Month
June is harvest-and-defend month in the Oklahoma garden, as the first real summer heat sets in. The early warm-season crops come on strong — summer squash, cucumbers, green beans, and the first ripe tomatoes and peppers — so pick frequently to keep plants producing. The Oklahoma heat-lovers, okra, southern peas, sweet potatoes, and melons, are growing fast and relish the rising temperatures. There is still time early in the month for a second sowing of beans, corn, and cucumbers.
The central task now is moisture management. As the reliable spring rain gives way to hot, dry, windy spells, water deeply and consistently — uneven watering causes blossom-end rot on tomatoes and peppers and bitter cucumbers — and renew mulch to hold soil moisture and keep roots cool. Stay on top of summer pests: squash bugs, squash vine borers, hornworms, spider mites, and grasshoppers all build now. Pull spent cool-season crops, and side-dress heavy feeders. Where the heat is already brutal, give lettuce and tender greens afternoon shade or let them go until fall.
Zone 7a (central and northeastern Oklahoma): the summer garden hits its stride. Harvest squash, cucumbers, and the first tomatoes, keep okra and southern peas growing in the heat, mulch and water deeply, and make a second planting of beans and corn early in the month.
Zone 7b (south-central and southeastern Oklahoma): the heat arrives early here. Prioritize heat-tough crops — okra, southern peas, sweet potatoes, melons, and peppers — water consistently to prevent blossom-end rot on tomatoes, and provide afternoon shade for any lingering tender greens.
What's at the Farmers Market
June markets swing fully into summer abundance across Oklahoma. The season's first wave of warm crops floods the tables: summer squash and zucchini, cucumbers, green beans, new potatoes, spring onions, and the long-awaited first tomatoes. Sweet corn begins by late month, and blackberries ripen in the warm early summer. Oklahoma's strawberries finish their short season as the peaches begin.
This is the start of stone-fruit season — the first Porter-area peaches arrive late in the month — and tables fill with beets, carrots, fresh garlic, basil, and other summer herbs. Cut flowers — sunflowers, zinnias, and lisianthus — brighten the markets, and farm eggs and local honey remain steady through the season.
For selection and storage: choose tomatoes that are fragrant and give slightly, and keep them at room temperature stem-side down, never refrigerated. Pick firm, glossy squash and cucumbers and use them quickly; refrigerate berries unwashed in a single layer and eat within a day or two; and store sweet corn cold in the husk and use promptly while the sugar is high. Keep new potatoes and onions cool, dark, and dry rather than chilled.
Night Sky This Month
June's short nights mean late-arriving darkness, but the warm air and the rising summer Milky Way reward the wait at Oklahoma's dark sites. The remote Black Mesa country and Black Mesa State Park in the panhandle remain the state's darkest skies, and the open Wichita Mountains offer a fine, accessible escape from city glow; clubs around Tulsa and Oklahoma City hold solstice-season star parties when humidity allows.
The summer sky takes over the evening. The bright Summer Triangle of Vega, Deneb, and Altair climbs in the east, and by late evening the heart of the Milky Way rises in the south through Scorpius — marked by the red supergiant Antares — and the 'teapot' of Sagittarius, the richest region of star clouds, clusters, and nebulae in the whole sky. The Big Dipper rides high in the northwest, and orange Arcturus stands nearly overhead at dusk.
June's summer solstice brings the year's longest days and shortest nights. There is no major meteor shower this month, but the Scorpius-Sagittarius Milky Way is the season's deep-sky highlight for binoculars and telescopes at a dark site. For this year's planet positions and the exact solstice timing from your Oklahoma latitude, see the printable Oklahoma night-sky guide.
Butterflies & Pollinators
June butterflies are abundant and varied across Oklahoma as summer broods peak. Swallowtails — eastern tiger, black, giant, and pipevine — work the blooming roadsides and gardens, and the prairies and pastures swarm with variegated fritillaries, common buckeyes, pearl crescents, sulphurs, and dozens of fast-flying skippers. The orange-and-yellow Indian blanket and the coneflowers draw nectaring clouds in the morning sun.
The big prairie specialist of the Oklahoma tallgrass, the declining regal fritillary, is in full flight this month in the best remnants like the Tallgrass Prairie Preserve and the Wichita Mountains, gliding low over the grass — a species to seek and savor. The northern monarch generation is largely gone, but locally bred monarchs continue on Oklahoma milkweed. Watch too for hackberry and tawny emperors around bottomland hackberry trees and the bright little gray and juniper hairstreaks.
To make the most of the season: June mornings, before the heat and wind build, are prime for prairie butterflies — visit a tallgrass remnant to look for the regal fritillary, and keep your garden's coneflower, milkweed, bee balm, and Indian blanket blooming to host the season's broods.
What to plant for them is in the Oklahoma native plants guide
Trees This Month
June clothes the Oklahoma woods in full, dense summer foliage and a last round of tree bloom. The southern magnolia opens its huge fragrant white flowers in southeastern yards and woods, the native chinquapin and chestnut oaks finish their catkins, and the bottomland buttonbush opens its pincushion white flower-balls along pond and lake margins, drawing pollinators to the water's edge. In towns, the crape myrtles begin their long summer bloom.
The work of the trees is now the quiet labor of fruit and nut development. The pecans in the bottomland groves set their tiny green nutlets after May's pollination, the post oaks and bur oaks begin forming acorns, and the persimmons and black cherries set fruit that will ripen later in the year. The cottonwoods finish shedding their cottony seed along the rivers, and the eastern red cedars carry their developing blue-green cones. The canopy is at its summer peak, casting deep shade over the now-quiet woodland floor across the eastern half of the state.
The Oklahoma native plants guide covers what grows with them
Weather & Daylight
Across Oklahoma, a typical June day averages a high near 89°F and a low near 66°F, with about 4.3 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Summer arrives hard, near-90F days and warm 66F nights that barely cool the air, humid rain showers still frequent.
| Average high | 89°F |
|---|---|
| Average low | 66°F |
| Precipitation | 4.3 in |
| Sunrise (mid-month) | 6:12 CT |
| Sunset (mid-month) | 20:45 CT |
Figures are statewide averages over the 1991–2020 U.S. climate normals; local conditions vary with elevation and distance from the coast. Sunrise and sunset are computed for a midstate point on the 15th (CT).
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One short note when Oklahoma's next month turns — what's arriving, blooming, and worth a night outside.
Go deeper with the Oklahoma guides
The complete Oklahoma birding, native-plant, and night-sky references — or the whole year, week by week, in one book.
Same month elsewhere: June in Oregon · June in Pennsylvania · June in Rhode Island