Photo: Kate McGahan · CC BY-SA 3.0June Lake’s winters are colder than most of the U.S.; July afternoons average 77°
A typical July afternoon reaches 77°, a January night drops to 16°.
A year in June Lake at a glance
Each month’s typical high and low, and what it brings.
What stands out about June Lake’s climate
Compared with towns across the U.S., with June Lake’s place in California beside it.
What a year in June Lake feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 98 frost-free days a year
In half of years the last 32° night comes by June 10 and the first by September 17. Frost and day counts come from NOAA’s station at Mammoth Lakes Rs, CA, 11 miles from the town’s center, at about the same height.
The 2023 USDA map puts June Lake’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −10°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
About 15 inches of rain a year
January is the wettest month and June the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in June Lake
99% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from September through June.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Mammoth Lakes Rs, CA.
Living with June Lake’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
98 frost-free days in zone 5b. The last frost comes by Jun 10 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 17.
Months with highs of 62–84° and lows of 40° or more: July and August. 35 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in June Lake from natural hazards, river flooding is the largest share (37%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →June Lake and similar climates
TownRatings has no climate map of the towns around June Lake yet.
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in June Lake averaged 1.3° warmer than the 1900s. The biggest change is in January (+2.8°).
A smaller shift than in 53% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How June Lake compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with June Lake’s place among California’s.
June Lake weather by month
Highs, lows and precipitation from NOAA’s grid at June Lake’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 42° | 16° | 2.6" | 24° – 36° |
| February | 43° | 17° | 2.5" | 22° – 39° |
| March | 47° | 20° | 2.0" | 26° – 40° |
| April | 52° | 24° | 1.1" | 32° – 44° |
| May | 60° | 32° | 0.8" | 38° – 51° |
| June | 70° | 39° | 0.4" | 48° – 59° |
| July | 77° | 46° | 0.5" | 58° – 65° |
| August | 77° | 45° | 0.4" | 56° – 64° |
| September | 70° | 38° | 0.4" | 50° – 58° |
| October | 60° | 29° | 0.9" | 40° – 50° |
| November | 49° | 22° | 1.3" | 26° – 42° |
| December | 42° | 16° | 2.3" | 23° – 34° |
| Year | 57° | 29° | 14.9" |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 22° to 39°. July is the most reliable, staying within 7°.
Where June Lake’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at June Lake’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mammoth Lakes Rs, CA, 11 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about June Lake’s climate
What is the weather like in June Lake?
A typical July afternoon reaches 77°, a January night drops to 16°. Colder January nights than 79% of U.S. towns; cooler July afternoons than 97% of U.S. towns.
How cold does it get in June Lake in winter?
December nights average 16°. About 210 nights a year reach 32° or below and 6 reach 0° or below. In the coldest December of the last 30 years the month averaged 23°.
How hot does it get in June Lake?
July, with a typical high of 77°. 90° days are rare: none in a normal year at Mammoth Lakes Rs, CA.
When is the first and last frost in June Lake?
In half of years the last spring frost (32°) comes by June 10 and the first fall frost by September 17, about 98 frost-free days, at Mammoth Lakes Rs, CA.
What growing zone is June Lake in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −10°.
What is the best time of year to visit June Lake?
By one simple rule (highs of 62–84° and lows of 40° or more), July and August. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is June Lake getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 53% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in June Lake.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.