Weather forecast for the John Muir Trail in June

In June, the Sierra Nevada region on the John Muir Trail experiences a mix of weather conditions. Temperatures typically range from lows of 0°C to highs around the mid-20s°C. Early in the month, rain or even snow showers are possible, particularly at higher elevations and in more exposed locations. As the month progresses, sunny days become more frequent, with brief episodes of rain interspersed, creating varied conditions for those trekking through this beautiful and rugged landscape.

Forecast settings

Start date
Jun 1
Start town
Happy Isles
End date
Jun 20
End town
Whitney Portal
Units
metric (°C, mm, km)
Customize this forecastSwitch to imperial units (°F, in, mi)
Total days
20
Total distance
352 km
Daily distance
17.6 km
Average high
19°C
Average low
7°C
Average precipitation
0.7 mm/day

The Sierra Nevada region in June starts with a mix of patches of rain and snow, particularly in the early days. Daily high temperatures often fluctuate from a chilly 4°C on days with patchy snow to up to 25°C on sunny spells, with lows dropping to around -5°C in areas like Donahue Pass.

As the days progress, sunny weather becomes more dominant, although intervals of rain continue to appear intermittently. Locations such as Tuolumne Meadow and Garnet Lake experience moderate rainfall at times, with temperatures averaging between 11°C and 23°C during the day and dropping to lows of 0°C at night. In contrast, days with abundant sunshine push highs up to 28°C further enhancing the variability of the weather.

Towards the latter half of June, the region experiences predominantly sunny days, especially around McClure Meadow and Whitney Portal. The temperatures rise notably, with highs reaching as much as 37°C at Whitney Portal and lows stabilizing around 20°C. However, passing clouds and occasional showers still occur, particularly closer to areas like Middle Rae Lake and Taboose Pass Junction, which keep the temperatures moderate and provide a refreshing break from the heat.

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