June is peak summer in Idaho's valleys and the start of the high-country thaw. The state flower, syringa, scents the canyons; the first cherries ripen in the southwestern orchards; and the long days fill with breeding birds as the Sawtooth and Lost River meadows finally begin to clear of snow.
Week by week in June
June 4–10
- Syringa scents the canyons at its peak while glacier lilies and spring beauty push up at the receding Sawtooth snowline.
- American White Pelicans and grebes tend nests on the wetlands as Mountain Bluebirds feed fledglings across the high meadows.
- The first sweet cherries arrive from the Emmett and Sunny Slope orchards, Idaho's marquee early-summer fruit.
- True darkness shrinks toward the solstice; the Summer Triangle climbs the east over the central-Idaho dark-sky reserve.
June 11–17
- Mountain meadows open with shooting star, elephant's head, and marsh marigold as the high snow recedes in the Sawtooths and White Clouds.
- The first high-elevation parnassians and mountain fritillaries emerge on the clearing forest slopes, tracking the receding snowline.
- Harvest the first peas, strawberries, and garlic scapes and start fall brassicas from seed as the dry season sets in.
- Williamson's Sapsucker and Clark's Nutcracker nest in the high conifers as the breeding season reaches the mountains.
June 18–24
- The summer solstice near June 21 brings Idaho's shortest nights; the Milky Way begins to arch through Cygnus on the latest dark hours.
- Wild rose and ninebark flower along the forest edges as the mid-mountain meadows fill with lupine and the first paintbrush.
- Sweet cherries peak alongside the first raspberries, new potatoes, salad turnips, and fava beans at the full-swing markets.
- American Dippers feed broods along the cold mountain streams as the high country reaches its nesting height.
June 25 – July 1
- The Sawtooth and White Cloud meadows begin their alpine peak with glacier lily, paintbrush, and alpine lupine following the snowline up.
- Milbert's Tortoiseshells work the streamside nettle and mountain fritillaries spread across the clearing high meadows.
- Water deeply and mulch the corn, potatoes, and beans as Idaho's hot, dry summer settles over the valleys.
- The first wild huckleberries appear at mountain-town stands alongside cherries, peas, and summer squash.
Birds This Month
June is peak nesting in Idaho, and the long days mean song from before 5 a.m. to nearly 10 p.m. River bottoms and foothills are loud with Bullock's Orioles, Black-headed Grosbeaks, Lazuli Buntings, Yellow Warblers, Western Tanagers, Western and Eastern Kingbirds, and Cedar Waxwings, while Common Nighthawks boom at dusk and Calliope and Rufous Hummingbirds tend broods. The sagebrush sings with Sage Thrasher, Brewer's and Vesper Sparrows, and Western Meadowlark.
The wetlands brim with nesting American White Pelicans, Western and Clark's Grebes, White-faced Ibis, Black-necked Stilts, American Avocets, and Wilson's Phalaropes. In the mountains, as the high meadows open, Mountain Bluebirds — the state bird — feed fledglings along the fences, and the conifer forests hold Cassin's Finch, Western Tanager, Townsend's and Yellow-rumped Warblers, Williamson's Sapsucker, and Clark's Nutcracker at the higher elevations.
What's Blooming
June is the bridge from the valley peak to mountain summer in Idaho. The state flower, syringa (Lewis's mock-orange), bursts into sweet-scented white bloom along the canyon slopes and riverbanks of the Clearwater, Salmon, and Snake — its signature month. The foothills hold the last of the balsamroot and peak lupine, blue flax, blanketflower, scarlet gilia, penstemons, and mariposa lilies, while the camas finishes on the Camas Prairie.
As the high snow recedes, the mid and upper mountain meadows open: the first glacier lilies and spring beauty push up at the receding snowline of the Sawtooths and White Clouds, with shooting stars, elephant's head, and marsh marigold in the wet basins. Wild rose and ninebark flower along the forest edges. The leading wave of the great alpine display is just beginning in the high country, building toward its July–August peak.
Garden This Month
June is full-growth month in the Idaho garden and the start of the long dry season. In the valleys, keep direct-sowing beans, summer squash, cucumbers, and successive lettuce, carrots, and beets, set out any remaining tomato, pepper, and melon starts early in the month, and watch the famous sweet corn and potatoes surge under the long, hot days. Harvest the first peas, strawberries, lettuce, and garlic scapes, and start seed now for the fall brassica crop.
Watering becomes essential as the rain shuts off; mulch deeply over the potatoes, onions, and beans to hold moisture and cut irrigation. Stake tomatoes, thin apple and cherry fruit in the southwestern orchards, and keep after the squash bugs and cutworms. In the high mountain valleys, the frost-free window has only now opened, so plant the full warm-season garden, lean on quick-maturing varieties, and use row cover to bank heat against Idaho's cool montane nights.
Zone 5a (cooler high valleys & eastern plain margins): the warm-season garden finally goes in. Plant tomatoes, squash, and beans now that frost has passed, choose quick-maturing varieties, and use row cover to bank heat through the short, cool mountain summer.
Zone 5b (Boise foothills & Magic Valley): set out any remaining tomatoes, peppers, and squash early in the month, direct-sow beans and cucumbers, and keep the cool-season harvest going while watering the new transplants through the warming days.
Zone 6a (warmest Treasure Valley & lower Snake River): the garden is in full growth. Keep planting beans, squash, and succession lettuce and carrots, water the warm-season crops as the dry heat sets in, and start fall brassicas from seed. Harvest the first peas, strawberries, and garlic scapes.
What's at the Farmers Market
June markets across Idaho move into early summer abundance. The headline is the first sweet cherries from the warm southwestern valleys around Emmett and the Sunny Slope country — Idaho's marquee June–July fruit. Berry season builds with the first field strawberries and, late in the month, early raspberries. The vegetable tables fill with peas, fava beans, salad turnips, radishes, lettuce, spinach, green garlic, garlic scapes, new potatoes, and the last of the asparagus and rhubarb.
Greenhouse tomatoes and cucumbers arrive, bedding plants and herb starts still crowd the stands, and Idaho honey from the spring bloom appears. Stored onions hold over until the new crop. Choose cherries that are firm and glossy with green stems still attached and refrigerate them unwashed; pick dry, fully colored berries and refrigerate in a single layer; and snap peas and asparagus that are crisp and bright, keeping them cold to hold their sweetness.
Night Sky This Month
June has Idaho's shortest, brightest nights — true darkness lasts only a few hours around the solstice at the state's northern latitude. For the best of it, the high country is the place: the Central Idaho Dark Sky Reserve around the Sawtooths, Stanley, and Sun Valley runs its summer programs and star parties, Bruneau Dunes State Park observatory hosts busy weekend viewing south of the Snake, and the wide, warm high desert offers comfortable, transparent skies.
The summer sky is rising: the Summer Triangle of Vega, Deneb, and Altair climbs the east, Hercules rides high with its bright globular cluster M13, and Scorpius with red Antares and Sagittarius with the heart of the galaxy scrape the southern horizon. The Milky Way begins to arch through Cygnus on the latest, darkest nights. No major meteor shower falls in June. For this year's exact planet positions and the aurora outlook for northern Idaho, see the printable Idaho night-sky guide.
Butterflies & Pollinators
June is a strong, diverse butterfly month across Idaho. The valleys, foothills, and canyon grasslands host Western Tiger, Pale, and Anise Swallowtails, a wealth of blues and coppers, checkerspots, hairstreaks, Milbert's Tortoiseshells along the nettle-lined streams, and the year's fritillaries on the lupine and balsamroot. The blooming syringa and wild rose draw nectaring crowds along the river corridors.
The frontier now is the mountains: as the Sawtooth, White Cloud, and Lost River meadows clear of snow, the high-elevation butterflies emerge — early parnassians, mountain fritillaries, alpines, blues, and checkerspots tracking the receding snowline and the first alpine bloom. This is the leading edge of the spectacular high-meadow flight that peaks in July and August in Idaho's central ranges, a preview of the best alpine butterflying in the state.
Trees This Month
June sees Idaho's forests in full leaf and the conifers finishing new growth. The state flower's shrub relative aside, the canyon and riverside trees fruit and flower: chokecherry, serviceberry, hawthorn, and Rocky Mountain maple set their developing fruit, black cottonwood drifts the last of its summer cotton down the river corridors, and quaking aspen groves stand in full shimmering green across the foothills and high valleys.
The conifers carry bright pale tips of fresh needles — ponderosa pine on the warm canyon slopes, Douglas-fir and grand fir on the mountains, the state tree western white pine, western redcedar, and western hemlock in the moist north-Idaho panhandle, and the soft-needled western larch in full summer green among them. Higher up, the Sawtooth and Lost River forests are now greening fully as the snowline retreats toward the peaks, and the subalpine fir and Engelmann spruce flush late.
Weather & Daylight
Across Idaho, a typical June day averages a high near 71°F and a low near 44°F, with about 1.8 inches of precipitation — statewide averages from the 1991–2020 U.S. climate normals.
Early summer settles in, comfortable low-70s days and cool 40s nights, with just enough rain to keep lawns green.
| Average high | 71°F |
|---|---|
| Average low | 44°F |
| Precipitation | 1.8 in |
| Sunrise (mid-month) | 5:53 MT |
| Sunset (mid-month) | 21:25 MT |
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 (MT).
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Same month elsewhere: June in Illinois · June in Indiana · June in Iowa