July is the warm, green peak of Wisconsin summer — prairies in full flower, Door County cherries ripening, and monarchs building over the milkweed. The marshes hum with insects, sweet corn fills the markets, and warm nights bring fireflies and the rich summer Milky Way.
Week by week in July
July 2–8
- The prairie blazes with purple coneflower, wild bergamot, and the first prairie blazing star as big bluestem rises around them.
- Tart Door County cherries reach their brief July window — choose them firm and glossy and refrigerate or freeze pitted right away.
- July is the richest butterfly month, with fritillaries, swallowtails, and skippers crowding the prairie nectar at its peak.
July 9–15
- Birdsong quiets as fledgling robins, cardinals, and orioles beg and follow their parents through the gardens and woods.
- The first sweet corn arrives — buy it the day you'll use it and keep the ears husked-on and chilled, as sugars turn to starch fast.
- The summer Milky Way is at its richest from the dark northwoods and Door County's Newport State Park dark-sky park.
July 16–22
- Mid-July is the key window to sow fall crops — broccoli, cabbage, kale, and fall carrots — so they mature before the autumn frost.
- Cardinal flower glows red along the streams while gray-headed coneflower and compass plant paint the prairie gold.
- Monarchs build the large midsummer generation, and the rare regal fritillary flies in a few protected tallgrass prairies.
July 23–29
- The first southbound shorebirds — yellowlegs and small sandpipers — appear on mudflats, the earliest hint of fall migration.
- Markets overflow with green beans, cucumbers, new potatoes, and the first tomatoes from the southern counties and greenhouses.
- The minor Delta Aquariid shower runs late in the month, building toward August's reliable Perseids.
Birds This Month
July birdsong quiets as the breeding season matures, but the activity continues with fledglings everywhere. Young robins, cardinals, orioles, and chickadees beg and follow their parents through the gardens and woods, and indigo buntings, field sparrows, and yellowthroats still sing from the edges. Grassland birds — bobolinks, meadowlarks, dickcissels, and sedge wrens — remain active in the Driftless and central prairies, and ruby-throated hummingbirds are busy at bee balm and cardinal flower.
The marshes stay productive: sandhill cranes and trumpeter swans shepherd growing young, broods of wood ducks and mallards work the channels at Horicon and Crex Meadows, and great egrets, great blue herons, and green herons hunt the shallows. Late in the month, the first southbound shorebirds — yellowlegs and small sandpipers — appear on mudflats, the earliest hint of fall migration.
This month's tip: keep hummingbird feeders and water features clean and full in the heat, and scan exposed mudflats and shrinking pond edges for the first returning shorebirds toward month's end.
What's Blooming
July is the showpiece of the Wisconsin prairie. The tallgrass and Driftless prairies blaze with summer color: purple coneflower, black-eyed Susan, gray-headed coneflower, butterfly weed, wild bergamot (bee balm), compass plant, rattlesnake master, culver's root, and the first spikes of prairie blazing star and cup plant. The grasses — big bluestem and Indian grass — rise tall around them.
In wet prairies, fens, and ditches, swamp milkweed, Joe-Pye weed, boneset, and the brilliant red cardinal flower open along the water. Roadsides glow with common milkweed, chicory, Queen Anne's lace, and day lilies, and gardens overflow with coneflowers, daylilies, phlox, and the long midsummer perennial parade. It is the richest nectar month of the Wisconsin year.
Garden This Month
July is peak harvest and peak maintenance in the Wisconsin garden. The early-summer crops come in fast — beans, summer squash, cucumbers, beets, carrots, the last peas, and the first tomatoes and peppers in the south. Pick frequently to keep plants producing, and water deeply and consistently; midsummer dry spells and high heat stress shallow-rooted crops, and uneven watering causes blossom-end rot and split tomatoes.
Mid-July is the key window to sow fall crops — broccoli, cabbage, kale, fall carrots, beets, turnips, and a final planting of bush beans — so they mature before the autumn frost, which arrives earlier in the north. Stay ahead of weeds, side-dress heavy feeders, and watch for the season's pests: Japanese beetles, squash bugs, cucumber beetles, and tomato hornworms are all active. Deadhead annuals and perennials to keep the bloom coming through the summer heat.
Zone 4b (central Wisconsin): the short-season garden is in full production — harvest daily and sow fall crops (broccoli, kale, fall carrots, beets) by mid-month so they mature before the early frost. Keep the soil consistently moist in the summer heat.
Zone 5a (south-central & Madison): peak harvest of beans, cucumbers, summer squash, and the first tomatoes. Sow fall brassicas and a second round of beans now, water deeply, and watch for Japanese beetles and disease in humid spells.
What's at the Farmers Market
July markets overflow with Wisconsin summer. The season's signature crops arrive: the first sweet corn mid-to-late month, the tart Door County cherries in their brief July window, and a flood of green and wax beans, summer squash, cucumbers, new potatoes, beets, carrots, cabbage, and blueberries. The first tomatoes appear from the southern counties and greenhouses, and raspberries ripen.
Cut flowers, fresh herbs, and abundant greens fill the stalls alongside the constants of Wisconsin cheese, eggs, honey, and meats. Buy sweet corn the day you'll use it and keep the ears in their husks, refrigerated — the sugars convert to starch fast. Choose Door County cherries firm and glossy and refrigerate or pit and freeze them right away, since their season is short. Pick tomatoes heavy and fragrant and store them at room temperature, never the fridge.
Night Sky This Month
July's warm nights bring back real darkness as the days slowly shorten, and the summer sky is at its richest. The Summer Triangle of Vega, Deneb, and Altair rides high overhead, and Scorpius with red Antares and the teapot of Sagittarius hang in the south. From a dark site, the Milky Way arches grandly across the sky, densest and brightest toward Sagittarius and the galactic center — one of the best naked-eye sights of the year.
This is prime deep-sky season: the star clouds, nebulae, and clusters of the summer Milky Way crowd binocular and telescope fields, including the Lagoon and Trifid Nebulae and the globular cluster M22. The minor Delta Aquariid shower runs late in the month, building toward August's Perseids. The dark northwoods skies and Door County's Newport State Park dark-sky park are superb for summer Milky Way viewing.
For exact planet positions and the best dark windows this month, see the printable Wisconsin night-sky guide for your part of the state.
Butterflies & Pollinators
July is arguably Wisconsin's richest butterfly month, with the prairies at their nectar peak. Great spangled fritillaries swarm the milkweed and coneflower, joined by monarchs building the large midsummer generation that will eventually fuel the fall migration. The swallowtails — eastern tiger, black, and giant — patrol gardens and river corridors, and red admirals, painted ladies, American ladies, and question marks are common. Prairie remnants hold a wealth of skippers and the regal fritillary, a rare and declining tallgrass-prairie specialist, in a few protected Driftless and southern grasslands. The endangered Karner blue flies its second brood in the central sand-county barrens, again tied to wild lupine. Wetland edges hold viceroys and baltimore checkerspots, and the silver-spotted skipper and hackberry emperor work woodland margins. A single July visit to a Driftless prairie like those near the Lower Wisconsin Riverway can turn up well over a dozen species.
What to plant for them is in the Wisconsin native plants guide
Trees This Month
July's trees are in mature, dark summer leaf, their fast spring growth complete. The flowering is mostly past, but the fragrant cream flowers of basswood still hum with bees early in the month, and the white clusters of elderberry ripen toward fruit. The work of the season is fruit and seed: black cherries and serviceberries ripen for the birds, oaks swell their acorns, and the maples have shed most of their spinning samaras.
Door County's orchard cherry trees hang heavy with the famous tart Montmorency fruit, harvested this month. The conifers have finished their new growth and stand in deep green, and the bog tamaracks wear their full soft needles. With the canopy at its densest, the forest floor lies in deep shade, and the woods are quiet and green in the midsummer heat.
The Wisconsin native plants guide covers what grows with them
Weather & Daylight
Across Wisconsin, a typical July day averages a high near 80°F and a low near 58°F, with about 4.0 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Peak summer heat and humidity, highs near 80F and lows only easing to 58F make evenings feel thick and sticky.
| Average high | 80°F |
|---|---|
| Average low | 58°F |
| Precipitation | 4.0 in |
| Sunrise (mid-month) | 5:28 CT |
| Sunset (mid-month) | 20:40 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).
Next month's version of this page, by email
One short note when Wisconsin's next month turns — what's arriving, blooming, and worth a night outside.
Go deeper with the Wisconsin guides
The complete Wisconsin birding, native-plant, and night-sky references — or the whole year, week by week, in one book.
Same month elsewhere: July in Wyoming · July in Alabama · July in Arizona